Online sample liquid recovery device

Abstract

The utility model discloses an on-line sample liquid recovery device which comprises a purging unit, a mixed liquid outlet unit and a sample recovery unit, and the purging unit comprises a purging pipe of which a gas inlet is connected with a nitrogen source; the mixed liquid outlet unit comprises a mixed liquid outlet pipe of which an outlet is connected to the liquid main pipeline; the sample recovery unit is rotatably arranged between the purging pipe and the mixed liquid outlet pipe through a quick joint, and comprises a rotary joint and a positioning mechanism which is arranged on the rotary joint and is used for fixing a sample bottle; the rotary joint is provided with a gas inlet channel and a liquid outlet channel; a sampling needle A is arranged at an outlet of the gas inlet channel; a sampling needle B is arranged at an inlet of the liquid outlet channel; nitrogen enters the gas inlet channel through the purging pipe and enters the sample bottle through the sampling needle A, so that a sample in the sample bottle enters the mixed liquid outlet pipe through the liquid outlet channel through the sampling needle B and enters the liquid main pipeline through the sample outlet. According to the utility model, residual samples can be collected on line so as to avoid waste, and sample bottles can be purged and dried.

Description

TECHNICAL FIELD

[0001] The utility model relates to chemical sampling technical field, concretely relates to a sample liquid on -line recovery device. BACKGROUND

[0002] Chemical industry needs to detect liquid on line many times, and the on line detection is the detection to the material on the production line directly, and the existing detection usually takes out the sample from the on line system, and needs to collect continuously in time period on line to determine that it meets the requirement of standard to guarantee the sample representativeness. The excess sample liquid in the sample bottle needs to be recovered by professional means after completing the detection to prevent from causing the pollution to the environment, thereby causing the waste of sample liquid, and the residual liquid remaining in the sample bottle can also affect the sampling quality of next time, thereby affecting the detection precision. SUMMARY

[0003] In order to overcome the above-mentioned defects, the utility model provides a sample liquid on -line recovery device can recover the excess sample liquid to the liquid pipeline, prevent the pollution to the environment, and can dry the sample bottle, guarantee the precision of sample liquid extraction.

[0004] The utility model discloses a sample liquid on -line recovery device sets up in liquid main pipeline, is used for recovering the sample in sample bottle to liquid main pipeline, and the recovery device includes:

[0005] The purging unit includes a purging pipe, and the gas inlet of the purging pipe is connected to a nitrogen source.

[0006] The mixed liquid outlet unit includes a mixed liquid outlet pipe, and the sample outlet of the mixed liquid outlet pipe is connected to the liquid main pipeline.

[0007] The sample recovery unit is rotatably arranged between the purging pipe and the mixed liquid outlet pipe through a quick connector, and the sample recovery unit includes a rotary joint and a positioning mechanism arranged on the rotary joint for fixing the sample bottle.

[0008] The rotary joint has a gas inlet channel and a liquid outlet channel arranged separately, the gas inlet channel is connected to the gas outlet of the purging pipe through the quick connector, and the outlet of the gas inlet channel is provided with a sampling needle A; the outlet of the liquid outlet channel is connected to the liquid inlet of the mixed liquid outlet pipe through the quick connector, and the inlet of the liquid outlet channel is provided with a sampling needle B.

[0009] The nitrogen enters the gas inlet channel through the purging pipe and enters the sample bottle through the sampling needle A, so that the sample in the sample bottle enters the mixed liquid outlet pipe through the sampling needle B and the liquid outlet channel, and then enters the liquid main pipeline through the sample outlet.

[0010] As a further improvement of the utility model, the positioning mechanism comprises a protective cover arranged on the rotary joint coaxially with the sample bottle, and a support assembly rotatably connected with the protective cover, and the support assembly and the protective cover form a placement space for fixing the sample bottle.

[0011] The bottom of the rotary joint is connected with a sealing block, a connecting port adapted to the sealing block is formed in the protective cover, and the sampling needle A and the sampling needle B extend into the protective cover through the sealing block.

[0012] In addition, when the sample bottle is fixed in the placement space, the sampling needle A and the sampling needle B can be inserted into the sample bottle through the rubber film of the sample bottle mouth, and the needle mouth of the sampling needle B is close to the inner surface of the rubber film.

[0013] As a further improvement of the utility model, the support assembly comprises:

[0014] A U-shaped support has two vertical rods symmetrically arranged at the radial ends of the protective cover, and a horizontal plate connected at the bottom of the two vertical rods, and the ends of the two vertical rods away from the horizontal plate are rotatably connected with the protective cover through shafts.

[0015] The adjusting knob comprises a screw rod coaxially arranged with the protective cover and threadedly connected with the horizontal plate, a support piece arranged on one end of the screw rod towards the sample bottle, and a knob handle arranged on the other end of the screw rod.

[0016] As a further improvement of the utility model, the recycling device further comprises a sampling box, and the sampling box comprises a box body and a box door hingedly arranged on the box body and openable and closable.

[0017] The quick connector is fixed on the inner wall of the side of the box body opposite to the box door through an L-shaped support plate, two elastic positioning buckles are arranged on the inner wall above the sample recycling unit, and the two elastic positioning buckles are correspondingly arranged with the two vertical rods.

[0018] As a further improvement of the utility model, the purging unit further comprises an on-off valve and an electromagnetic valve arranged on the purging pipe.

[0019] The on-off valve and the electromagnetic valve are sequentially arranged from the gas outlet end of the purging pipe to the gas inlet end, and the gas inlet of the purging pipe extends to the outside of the box body and is connected with the nitrogen source.

[0020] As a further improvement of the utility model, the mixed liquid outlet unit further comprises a three-way valve arranged in the box body through a U-shaped support,

[0021] The sample outlet of the mixed outflow pipe is in sealed connection with the upper interface of the three-way valve, two side interfaces of the three-way valve are connected with an outgas pipe and an outflow pipe respectively, and outlets of the outgas pipe and the outflow pipe extend to outside of the box.

[0022] The utility model discloses the beneficial effect is: through sample recovery unit fixed sample bottle, realize sample bottle overturning and cooperate and blow -off unit and mixed outflow unit, to make the residual sample in bottle recovery to liquid main pipe, realize residual sample's no -waste recovery, can blow -off drying to sample bottle when completing sample recovery simultaneously, to avoid the influence of residual sample to sampling quality again, guarantee the detection accuracy of sample. BRIEF DESCRIPTION OF DRAWINGS

[0023] Fig. 1 It is the structure schematic drawing of the utility model;

[0024] Fig. 2 It is the working state schematic drawing when the utility model carries out sample recovery;

[0025] Fig. 3 It is the cross section structure schematic drawing of sample recovery unit of the utility model;

[0026] Fig. 4 It is the working principle schematic drawing of the utility model.

[0027] The following description is made in connection with the drawings:

[0028] 1, sample bottle; 101, rubber film; 2, blow -off unit; 201, blow -off pipe;

[0029] 2011, inlet; 202, on -off valve; 203, electromagnetic valve; 3, mixed outflow unit; 301, mixed outflow pipe; 3011, sample outlet; 302, three -way valve; 303, U -shaped support; 304, outgas pipe; 305, outflow pipe; 4, sample recovery unit; 401, quick -joint; 402, rotary joint; 4021, inlet channel; 4022, outflow channel; 4023, sampling needle A; 4024, sampling needle B; 4025, sealing block; 403, positioning mechanism; 4031, protective cover; 40311, connecting port; 4032, support assembly; 40321, vertical rod; 40322, cross plate; 40323, shaft; 40324, screw; 40325, support piece; 40236, knob handle; 4033, installation space; 5, sampling box; 501, box; 502, box door; 6, L-shaped support plate; 7, elastic positioning buckle. DETAILED DESCRIPTION

[0030] The following in connection with the drawings, to a preferred embodiment of the utility model makes detailed description.

[0031] Refer toFigs. 1 to 4 The utility model discloses a kind of sample liquid online recovery device's embodiment, the recovery device is arranged on liquid main pipeline, for residual sample in sample bottle 1 is recycled to liquid main pipeline, realize the wasteless recovery of residual sample, sample bottle 1 can be purged and dried when completing sample recovery simultaneously, to avoid the influence of residual sample liquid to the quality of sampling again, guarantee the detection precision of sample.

[0032] The recovery device is arranged in sampling box 5, forms an integrated structure, facilitates the arrangement of recovery device, sampling box 5 includes box body 501, and the box door 502 that can be opened and closed is hinged to box body 501, facilitate the taking and placing of sample bottle 1, the bottle cap of sample bottle 1 used in the embodiment is provided with the rubber film that can be pierced, and the piercing hole on the rubber film has certain rebound reset ability, to realize the closure of bottle mouth.

[0033] Specifically, the recovery device includes a purge unit 2, a mixed liquid outlet unit 3, and a sample recovery unit 4. The purge unit 2 includes a purge pipe 201, which is provided with an on-off valve 202 and a solenoid valve 203. The on-off valve 202 and the solenoid valve 203 are arranged in sequence from the gas outlet end of the purge pipe 201 to the gas inlet end 2011. The gas inlet end 2011 of the purge pipe 201 extends to the outside of the side wall of the box body 501 and is connected to a nitrogen source.

[0034] Further, the mixed liquid outlet unit 3 includes a mixed liquid outlet pipe 301, a three-way valve 302, an air outlet pipe 304, and a liquid outlet pipe 305. The mixed liquid outlet pipe 301 is connected to the upper interface of the three-way valve 302 as the main liquid outlet path. The two side interfaces of the three-way valve 302 are connected to the air outlet pipe 304 and the liquid outlet pipe 305, respectively, as branch paths for sample bottle 1 exhaust pressure relief and recycling residual sample in the sample bottle to the liquid main pipeline. The three-way valve 302 is installed in the box body 501 through a U-shaped bracket 303.

[0035] Further, the sample recovery unit 4 is rotatably arranged between the purge pipe 201 and the mixed liquid outlet pipe 301 through the quick connector 401, and the sample recovery unit 4 comprises a rotary joint 402 and a positioning mechanism 403 arranged on the rotary joint 402 and used for fixing the sample bottle 1; the rotary joint 402 has a separated gas inlet channel 4021 and a liquid outlet channel 4022, the gas inlet channel 4021 is connected with the gas outlet of the purge pipe 201 through the quick connector 401, and the gas outlet channel 4021 is provided with a sampling needle A 4023; the liquid outlet channel 4022 is connected with the liquid inlet of the mixed liquid outlet pipe 301 through the quick connector 401, and the liquid inlet channel 4022 is provided with a sampling needle B 4024. Wherein, the gas inlet channel 4021 and the liquid outlet channel 4022 are both channels with “‘” shape structure, and are oppositely arranged on the rotary joint 402, and the gas inlet channel 4021 and the liquid outlet channel 4022 are separated from each other and not communicated with each other, forming two separate channels.

[0036] It should be noted that the rotary joint can ensure smooth transmission of medium (gas or liquid) during rotation through the sealing element, and prevent leakage, which belongs to the conventional technical means, and thus will not be described herein.

[0037] Further, the positioning mechanism 403 comprises a protective cover 4031 arranged on the rotary joint 402 and coaxially arranged with the sample bottle 1, and a support assembly 4032 rotatably connected with the protective cover 4031, and the support assembly 4032 and the protective cover 4031 form a placement space 4033 for fixing the sample bottle 1.

[0038] The bottom of the rotary joint 402 is connected with a sealing block 4025, the protective cover 4031 is provided with a connecting port 40311 matched with the sealing block 4025, and the sampling needle A 4023 and the sampling needle B 4024 extend into the protective cover 4031 through the sealing block 4025;

[0039] When the sample bottle 1 is fixed in the placement space 4033, the sampling needle A 4023 and the sampling needle B 4024 can be inserted into the sample bottle 1 through the rubber film of the bottle mouth of the sample bottle 1, and the needle mouth of the sampling needle B 4024 is close to the inner surface of the rubber film, so that the liquid in the sample bottle 1 can be discharged through the sampling needle B when the sample bottle 1 is inverted.

[0040] Further, the support assembly 4032 comprises a U-shaped support and an adjusting knob arranged on the U-shaped support, the U-shaped support has two vertical rods 40321 symmetrically arranged at the two ends of the protective cover 4031 in the radial direction, and a horizontal plate 40322 connected at the bottom of the two vertical rods 40321, the ends of the two vertical rods 40321 away from the horizontal plate 40322 are rotatably connected with the protective cover 4031 through a shaft 40323, that is, the U-shaped support can rotate around the axis of the shaft 40323; the adjusting knob comprises a screw rod 40324 coaxially arranged with the protective cover 4031 and threadedly connected with the horizontal plate 40322, a support piece 40325 arranged on one end of the screw rod 40324 towards the sample bottle 1, and a knob handle 40236 arranged on the other end of the screw rod 40324, the knob handle 40236 is rotated to drive the screw rod 40324 to rotate, thereby driving the support piece 40325 to move up and down, so as to stably fix the sample bottle 1 in the placement space.

[0041] In addition, in order to realize the stability of the sample bottle in the inverted state, the quick connector 401 is fixed to the inner wall of the side of the box body 501 opposite to the box door 502 through the L-shaped support plate 6, and two elastic positioning buckles 7 are arranged on the inner wall above the sample recovery unit 4, and the two elastic positioning buckles 7 are arranged corresponding to the two vertical rods 40321.

[0042] Further, referring to Fig. 4 The operation process of the schematic diagram provided by the embodiment is as follows:

[0043] S1, preparation: the sample bottle 1 is loaded into the protective cover 4031, and the sample bottle 1 is stably fixed through the adjusting knob, at this time the sampling needles A and B are inserted into the sample bottle, and the three-way valve 302 is opened to make the mixed outlet pipe 301 communicate with the outlet pipeline 305;

[0044] S2, sample recovery: the support assembly 4032 is turned upward, so that the sample bottle 1 is inverted, that is, the mouth is downward, the vertical rods 40321 of the support assembly 4032 are clamped on the elastic positioning buckles 7, the on-off valve 202 is opened, nitrogen gas enters the inlet channel 4021 through the blowing pipe 201 and enters the sample bottle 1 through the sampling needle A 4023, and as the pressure in the sample bottle 1 increases, the sample in the bottle is driven to flow into the mixed outlet pipe 301 through the outlet channel 4022 through the sampling needle B 4024, and then is recovered to the liquid main pipeline through the outlet pipeline 305;

[0045] S3, pressure relief: when the sample in the sample bottle 1 is emptied, the on-off valve 202 is closed, the three-way valve 302 is switched to make the mixed outlet pipe 301 communicate with the outlet pipeline 304, and the sample bottle is exhausted and depressurized;

[0046] S4, reset, close the three-way valve 302, turn the support assembly back to the original position, loosen the adjusting knob, turn the U-shaped support, and then take out the sample bottle, and the sample recovery is completed.

[0047] In summary, the sample liquid on-line recovery device provided by the utility model is arranged on the liquid main pipeline, is used for recovering the residual sample in the sample bottle to the liquid main pipeline, realizes the wasteless recovery of the residual sample, can blow and dry the sample bottle when the sample recovery is completed, and prevents the influence of the residual sample on the quality of resampling, thereby guaranteeing the detection precision of the sample.

[0048] In the above description, many specific details are set forth in order to provide a thorough understanding of the present application. However, the above description is only a preferred embodiment of the present application, and the present application can be implemented in many other ways different from the description. Therefore, the present application is not limited by the above disclosed specific implementation. Meanwhile, any person skilled in the art can make many possible changes and modifications to the technical solution of the present application, or modify it into equivalent embodiments, without departing from the scope of the technical solution of the present application. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application, without departing from the scope of the technical solution of the present application, still belongs to the protection scope of the technical solution of the present application.

Claims

1. An online sample recovery device, installed in a main liquid pipeline, for recovering samples from sample vials (1) back to the main liquid pipeline, characterized in that, The recovery device comprises: a purging unit (2) comprising a purging pipe (201), an air inlet (2011) of the purging pipe (201) being connected to a nitrogen source; a mixed liquid outlet unit (3) comprising a mixed liquid outlet pipe (301), a sample outlet (3011) of the mixed liquid outlet pipe (301) being connected to a liquid main pipe; a sample recovery unit (4) rotatably arranged between the purging pipe (201) and the mixed liquid outlet pipe (301) through a quick connector (401), the sample recovery unit (4) comprising a rotary joint (402) and a positioning mechanism (403) arranged on the rotary joint (402) for fixing a sample bottle (1); the rotary joint (402) has a separate air inlet channel (4021) and a liquid outlet channel (4022), an air inlet of the air inlet channel (4021) being connected to an air outlet of the purging pipe (201) through the quick connector (401), and a sample needle A (4023) being arranged at an air outlet of the air inlet channel (4021); a liquid inlet of the liquid outlet channel (4022) being connected to a liquid inlet of the mixed liquid outlet pipe (301) through the quick connector (401), and a sample needle B (4024) being arranged at a liquid inlet of the liquid outlet channel (4022); wherein nitrogen enters the air inlet channel (4021) through the purging pipe (201) and enters the sample bottle (1) through the sample needle A (4023), so that the sample in the sample bottle (1) enters the mixed liquid outlet pipe (301) through the sample needle B (4024) and the liquid outlet channel (4022), and then enters the liquid main pipe through the sample outlet (3011).

2. The on-line sample liquid recovery device according to claim 1, characterized by: The positioning mechanism (403) comprises a protective cover (4031) arranged on the rotary joint (402) and coaxially arranged with the sample bottle (1), and a support assembly (4032) rotatably connected with the protective cover (4031), the support assembly (4032) and the protective cover (4031) forming a placement space (4033) for fixing the sample bottle (1); a sealing block (4025) is connected to the bottom of the rotary joint (402), a connecting port (40311) matched with the sealing block (4025) is arranged on the protective cover (4031), and the sample needle A (4023) and the sample needle B (4024) extend into the protective cover (4031) through the sealing block (4025); in addition, when the sample bottle (1) is fixed in the placement space (4033), the sample needle A (4023) and the sample needle B (4024) can be inserted into the sample bottle (1) through a rubber film of a bottle opening of the sample bottle (1), and a needle opening of the sample needle B (4024) is close to an inner surface of the rubber film.

3. The on-line sample liquid recovery device according to claim 2, wherein the support assembly (4032) comprises: The U-shaped support has two vertical rods (40321) symmetrically arranged at the two ends of the protective cover (4031) in the radial direction, and a horizontal plate (40322) connected to the bottom of the two vertical rods (40321), and the ends of the two vertical rods (40321) away from the horizontal plate (40322) are rotatably connected to the protective cover (4031) through a shaft (40323); The adjusting knob comprises a screw rod (40324) coaxially arranged with the protective cover (4031) and threadedly connected with the horizontal plate (40322), a supporting sheet (40325) arranged on one end of the screw rod (40324) towards the sample bottle (1), and a knob handle (40236) arranged on the other end of the screw rod (40324).

4. The on-line sample liquid recovery device according to claim 3, characterized by: The recovery device further comprises a sampling box (5), which comprises a box body (501) and a box door (502) hingedly connected to the box body (501) and openable and closable; The quick connector (401) is fixed to the inner wall of the side of the box body (501) opposite to the box door (502) through an L-shaped support plate (6), and the inner wall is provided with two elastic positioning buckles (7) above the sample recovery unit (4), and the two elastic positioning buckles (7) are correspondingly arranged with the two vertical rods (40321).

5. The on-line sample fluid recovery device according to claim 4, characterized in that: The purge unit (2) further comprises an opening and closing valve (202) and an electromagnetic valve (203) arranged on the purge pipe (201); The opening and closing valve (202) and the electromagnetic valve (203) are arranged in sequence from the gas outlet end of the purge pipe (201) to the gas inlet (2011) end, and the gas inlet (2011) of the purge pipe (201) extends to the outside of the box body (501) and is connected with a nitrogen source.

6. The on-line sample fluid recovery device according to claim 5, characterized in that: The mixing liquid outlet unit (3) further comprises a three-way valve (302) arranged in the box body (501) through a U-shaped support (303), The sample outlet (3011) of the mixing liquid outlet pipe (301) is sealingly connected with the upper interface of the three-way valve (302), two side interfaces of the three-way valve (302) are respectively connected with a gas outlet pipeline (304) and a liquid outlet pipeline (305), and the outlets of the gas outlet pipeline (304) and the liquid outlet pipeline (305) extend to the outside of the box body (501).

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