CN206876461U - One kind detection pretreating device - Google Patents

Abstract

The utility model discloses one kind to detect pretreating device, including housing, and operation module and display panel positioned at housing outer surface, housing include inner chamber and open and close door, inner chamber is provided with multiple specimen cups, switching mechanism, extractant fixed seat and receiver, and specimen cup includes base；Switching mechanism includes motor, gear and rollover stand, and specimen cup is fixed on rollover stand, and rollover stand is fixed with gear and synchronous axial system；Extractant fixed seat is located at the upper surface of case top；Splicing panel surface is provided with beaker fixed seat, and receiver pull is arranged at inner chamber；Beaker fixed seat is corresponding with specimen cup position, and when specimen cup is overturn down with switching mechanism, liquid outlet is directed at beaker fixed seat down.It is more compact by the whole pre-treatment all-in-one machine structure of above-mentioned setting, more space is not take up, its most pre-treatment operating procedure is substituted by machine, it is necessary to which the operation that experimenter participates in is respectively positioned in inner chamber.

Description

One kind detection pretreating device

Technical field

A kind of extraction element for detecting sample is the utility model is related to, is specially a kind of detection pretreating device.

Background technology

Food security is the major issue concerning people's health and national economy.At present, it is each to have turned into the world for food-safety problem The problem of state's facing and concern.Food-safety problem mainly includes the following aspects：Chemical hazard, biotoxin, The safety issue of microbes harm, food adulteration and Genetic engineering food.It is illegal to add hormone and medicine, agriculture in China An important factor for pollution at the water sources such as medicine residual, Jiang Hai lakes and coastal waters and microorganism pollution etc. are food-safety problems.

For the generation of effectively containment food security malignant event, ensure resident food consumption safety, food medicine, quality inspection, health, The supervision departments such as agricultural actively develop food safety Regulation work, the newly-built a collection of laboratory with professional detection level, increase Inspecting force, sampling observation number is improved, is escort for state food quality safety.Liquid chromatogram has been purchased in succession in these laboratories Large-scale instruments such as instrument, efficient liquid phase tandem mass spectrum gas chromatograph, gas-chromatography tandem mass spectrum, atom optical detector and supporting Pre-processing device, establish some examination criterias.

But a series of problems is still had in terms of Pretreatment Equipment, constrains further carrying for food safety Regulation means Rise, be mainly manifested in：Pretreatment Equipment quality, automation, the standardization of pre-treating method can not be realized, with automating journey The higher large-scale detection device of degree does not match, and causes high-grade, precision and advanced detection device can not do stable accurate result, and detection device obtains Utilized less than effective, do not reach food safety Regulation effect；Pretreatment Equipment can not in most of food safety detection standard Automation, standardization, the problems such as pretreatment process is cumbersome, and the time is grown, and the specialized capability requirement to operating personnel is high be present, Different operating personnel can obtain different experimental results, can not realize the standardization truly detected, cannot also eat Product security control it is ageing；Required cost is very high, and completing the pretreatment process of a Detection task needs before purchasing largely Processing equipment, for example, homogenizer, eddy mixer, ultrasonic wave extraction instrument, shaking bath, centrifuge, filter, nitrogen evaporator, Solid-phase extracting instrument etc.；Operating personnel directly contact chemical reagent, cause security poor, such as：Ethyl acetate, acetonitrile, dichloromethane Deng the aggressive solvent such as volatile organic solvent and acid, alkali；Different crowdes of the same batch of different operating personnel, same operating personnel There is operating error between secondary.

In summary, due to Pretreatment Equipment technical problem, can not ensure sample handling processes are simple, at quick, batch Reason, personnel health, environmental protection and result accurately and reliably, also just make various food safety Regulation means have a greatly reduced quality, or even nothing Method is implemented, and current pre-processing device is bulky, and involved instrument is more, can take larger space.

Utility model content

The purpose of this utility model is to provide for a kind of detection pretreating device, compact structure, is not take up more sky Between, its most pre-treatment operating procedure is substituted by machine, it is necessary to which the operation that experimenter participates in is respectively positioned in inner chamber.

In order to realize above-mentioned purpose of utility model, the utility model employs following technical scheme：One kind detection pre-treatment Device, including housing, operation module and display panel, operation module and display panel are respectively positioned on surface of shell；The housing bag Inner chamber and open and close door are included, the inner chamber is provided with：

Multiple specimen cups, blend, filter for sample and extract, be provided with liquid outlet at the top of specimen cup, specimen cup includes bottom Seat；

Switching mechanism, the automatic turning for specimen cup；Switching mechanism includes motor, gear and rollover stand, the sample Cup is fixed on rollover stand, and rollover stand is fixed with gear and synchronous axial system, motor are connected with gear；

Extractant fixed seat, putting and fixing for bottled extractant, located at the upper surface of case top；

Receiver, for putting extract solution container containing, splicing panel surface is provided with beaker fixed seat, and receiver pull is set In inner chamber；The beaker fixed seat is corresponding with specimen cup position, and when specimen cup is overturn down with switching mechanism, liquid outlet is down It is directed at beaker fixed seat.

Preferably, the inner chamber is additionally provided with for extracting extractant out of extractant fixed seat extractant bottle to specimen cup The liquid pump of interior conveying, liquid pump are fixed on the case inside of inner cavity top.The inner chamber is additionally provided with for conveying gas into specimen cup Body is the air pump of specimen cup injection pressure, and air pump is fixed on the case inside of inner cavity top.Liquid pump, air pump are arranged in housing, right Component is covered and protected, and reasonably make use of the inner space of cover top portion.

Preferably, the base is detachably connected with rollover stand, and base bottom is provided with fastener, and rollover stand, which is provided with, is used for fastener The shackle member of fastening and the knob of control shackle member activity.

Preferably, the shackle member is rotatably connected on rollover stand by rotating shaft, is provided with rotating shaft and is used for shackle member and resets Torsion spring, shackle member includes joint and the retaining tips for same knobs fit, and the knob is in the form of a column, and knob side wall includes using The breach inside knob is pressed into the side plate bending for propping up retaining tips and by retaining tips, is equipped with inside side plate bending and breach Locating slot for retaining tips insertion positioning.

Preferably, the housing is in cuboid, and operation module, display panel and open and close door are respectively positioned on the positive front side of housing Surface, operation module and display panel set by side, and operation module be located at display panel lower section.

Compared with prior art, the detection pretreating device of above-mentioned technical proposal is employed, is had the advantages that：

First, using detection pretreating device of the present utility model, compact structure, more space is not take up, its major part Pre-treatment operating procedure by machine substitute, it is necessary to experimenter participate in operation be respectively positioned in inner chamber, its space utilization feature It is as follows：

1. specimen cup is loaded on switching mechanism, its shattering process is just put, and it is then 180 ° of upset to extract and filter, directly By sample liquid to be detected towards flowing out on receiver, specimen cup need not fetch, and upset is all in the lumen；

2. extractant fixed seat, being arranged on the top outer of housing, being easy to experimenter to operate, extractant is fetched and changed More convenient, next is easy to observe, and can observe directly the dosage of extractant.

2nd, multiple specimen cups can be put on switching mechanism, therefore pre-treatment operation can handle multiple samples simultaneously, without Repeat identical step.

3rd, operation module and display panel are placed on surface of shell, easy to operation and observation, with time-division utilization space.Open The setting for closing door is that the part in inner chamber is protected, at the same in inner chamber part operation when, open and close door should be close, Protection personnel.

Brief description of the drawings

Fig. 1 is the structural representation that the utility model detects pretreating device embodiment；

Fig. 2 is the structural representation that pretreating device is detected in the present embodiment；

Fig. 3 is the structural representation of switching mechanism and receiver in the present embodiment；

Fig. 4 is the fractionation structural representation of specimen cup in the present embodiment；

Fig. 5 is the sectional view of specimen cup in the present embodiment；

Fig. 6 is the fractionation structural representation of storage cup in the present embodiment；

Fig. 7 is the half section structure diagram of storage cup in the present embodiment；

Fig. 8 is the structural representation of top cover in the present embodiment；

Fig. 9 is the half section structure diagram of gland in the present embodiment；

Figure 10 is the attachment structure schematic diagram of specimen cup and rollover stand in the present embodiment；

Figure 11 is the connection diagram (tightening state) of knob, shackle member and fastener in the present embodiment；

Figure 12 is the connection diagram (released state) of knob, shackle member and fastener in the present embodiment；

Figure 13 is the structural representation of knob in the present embodiment；

Figure 14 is the partial enlarged drawing at A in Fig. 4.

Reference：1st, extractant fixed seat；2nd, air pump；3rd, liquid pump；4th, specimen cup；40th, Storage Cup；400th, drain pipe； 4001st, liquid outlet；401st, SPE part；402nd, gland；4020th, catching groove；4021st, limited post；4022nd, locating slot；403rd, press Plate；4030th, stopper slot；404th, top cover；4040th, projection；405th, pulverization cylinder；406th, filter screen；407th, gas-liquid pipe；41st, base；410、 Broken blade；411st, fastener；5th, bottom is covered；50th, shackle member；501st, joint；502nd, rotating shaft；503rd, retaining tips；51st, knob；510、 Locating slot；511st, side plate bending；512nd, breach；6th, receiver；7th, gear；8th, motor；90th, display panel；91st, operation module；92、 Open and close door.

Embodiment

The utility model is described further below in conjunction with the accompanying drawings.

Pretreating device, including housing, operation module 91 and display panel 90, operation module are detected as shown in Fig. 1 to 14 91 and display panel 90 be respectively positioned on surface of shell；Housing includes inner chamber and open and close door 92, and inner chamber is provided with：Four specimen cups 4, one Switching mechanism, four air pumps 2 of liquid pump 3, four of extractant fixed seat 1, four and a receiver 6.

Switching mechanism, as shown in Figure 3；Switching mechanism includes motor 8, gear 7 and rollover stand, and specimen cup 4 is fixed on upset On frame, rollover stand is fixed with gear 7 and synchronous axial system, motor 8 are connected with gear 7, the downward automatic turning for specimen cup 4.

Extractant fixed seat 1, as shown in figure 1, located at the upper surface of case top, for bottled extractant put and it is solid It is fixed.

Liquid pump 3, as shown in Fig. 2 the case inside of inner cavity top is fixed on, for the extractant from extractant fixed seat 1 Extract extractant in bottle to convey into gas-liquid pipe 407, liquid pump 3 uses peristaltic pump or miniature anti-corrosion self-priming water pump in the present embodiment.

The amount that can accurately control liquid to flow out, to take miniature anti-corrosion self-priming water pump to be cooperateed with normal-closed electromagnetic valve and control System, into specimen cup 4 plus extractant will first open liquid pump, open liquid valve after certain pressure to be achieved, interval time is shorter.Hydraulic pressure The pressure of pump is stable, and magnetic valve is switched off when the extraction dosage of extraction reaches setting value, carries out the accurate control of flow.

Air pump 2, as shown in Fig. 2 being fixed on the case inside of inner cavity top, it is for conveying gas into gas-liquid pipe 407 Crushing chamber injection pressure.

Pressure sensor is additionally provided with specimen cup 4, the pressure data inside specimen cup is gathered and transmitted by pressure sensor , can be to the accurate control of the pressure in passage, by the accurate control pressure of baroceptor in whole passage to display panel 90 In flow and size, be fed directly to intelligent control center electric control part to monitor the pressure of whole passage in real time, work as setting Time reaches, and air pump 2 is stopped, and magnetic valve is closed immediately ensures that the pressure in pipeline is constant, when reaching maximum pressure certainly Dynamic alarm is stopped, and ensures being perfectly safe for working environment on the premise of function is reached；The reading of pressure sensor is aobvious There is feedback in display screen, the ideal effect that we smoothly separate sample liquid with the waste product residue of processing can be effectively accomplished.

Receiver 6, as shown in Figures 2 and 3, the surface of receiver 6 are provided with beaker fixed seat 60, and the pull of receiver 6 is arranged at Inner chamber；Beaker fixed seat 60 is corresponding with the position of specimen cup 4, when specimen cup 4 is overturn down with switching mechanism, the court of liquid outlet 4001 Lower alignment beaker fixed seat 60, sample liquid is flowed directly out to beaker, after the sample liquid emptying in specimen cup 4, by receiver 6 Extract out, take beaker away, you can obtain sample liquid.

Specimen cup 4, as shown in figure 4, specimen cup 4 divide for Storage Cup 40 and base 41, base 41 and Storage Cup 40 it is detachable Set and junction is provided with seal.

Base 41, positioned at the lower section of Storage Cup 40, base 41 is provided with broken blade 410 and driver 42, driver 42 and broken knife Piece 410 connects, and driver 42 is small-sized motor, for driving the broken quick rotation chopping food sample of blade 410.

Storage Cup 40, as shown in Figures 5 to 7, from the bottom to top successively include pulverization cylinder 405, top cover 404, press mechanism and Drain pipe 400.

The inside of pulverization cylinder 405 is crushing chamber, and broken blade 410 is located in the crushing chamber, and pulverization cylinder 405 is provided with gas-liquid pipe 407, Gas-liquid pipe 407 connects with crushing chamber, and the top of pulverization cylinder 405 is filter screen 406.

Top cover 404, the top of pulverization cylinder 405 is connected to by screw thread rotation, the detachable purpose of top cover is people easy to operation Member is cleared up filter screen, and the middle part of top cover 404 is provided with through hole, and the through hole connects with drain pipe 400.

Drain pipe 400 is fixed on the through hole at the middle part of top cover 404, and the top of drain pipe 400 is liquid outlet 4001, drain pipe SPE part 401 is additionally provided with 400, SPE part 401 is located at the inwall of drain pipe 400, and closes liquid outlet 4001.

Crushing chamber：For the cavity inside pulverization cylinder 405, food to be detected is put into pulverization cylinder 405, passes through broken blade 410 crush, while crushing chamber is connected with air-liquid pump, can add extractant and gas.

First filter chamber：Filter screen 406 to the passage between SPE part 401 is first filter chamber, and filter screen 406 is by larger particle mistake Filter, leaves the less solid granulates of particle and liquid phase.After SPE part 401, liquid phase extract solution is only left from liquid outlet 4001 outflows.

Press mechanism, as shown in Figures 5 to 7, press mechanism include gland 402, pressing plate 403 and spring, and gland 402 is to cut Face is in the annular element of " Jiong " shape, and the top of gland 402 is provided with detachable end, and end cap is connected with gland 402 by fastener, bullet Spring one end extrudes the top end cover of gland 402, and the other end is pressed down against pressing plate 403, and drain pipe 400 is provided with the extension of circumferentially extending Extension board is pressed on the seal of capping downwards by plate, pressing plate 403, is increased the sealing of drain pipe 400, is prevented leakage or leakage Gas.

As shown in figure 9, the inner surface of gland 402 is provided with limited post 4021, the middle part of limited post 4021, which is provided with, is used for fastener The screwed hole being screwed into, the side portion of pressing plate 403 are provided with the stopper slot 4030 for preventing that it from rotating, and limited post 4021 is embedded in stopper slot 4030, axial direction of the pressing plate 403 along limited post 4021 slides.For preventing the rotation of pressing plate 403 and spring, make the pressure of spring Contracting is more stable, avoids rotating during spring-compressed, camber of spring is small, more stable.

As shown in Figure 8 and Figure 9, gland 402 and the Detachable connection structure that top cover 404 is rotary fastening, top cover 404 or pressure One of them is provided with projection 4040 to lid 402, and another, which is provided with, is used for the catching groove 4020 that projection 4040 is screwed in and fastened；Projection 4040 Grafting is somewhat similarly to the structure of catching groove 4020 to be tightened the bulb of formula.The lower section of catching groove 4020 is provided with a locating slot 4022, the locating slot 4022 is by coordinating with press mechanism so that whole gland 402 is in the trend of upper bullet, projection 4040 When entering catching groove 4020, still there is downward elastic force in projection 4040, make projection 4040 firmly by the locating slot 4022 It is fixed in catching groove 4020, ensures that gland 402 is not easy to deviate from.

So the effect of press mechanism is by two：1. increasing the seal of drain pipe 400,2. improve press mechanism in top cover Fixation on 404.

As described in Figure 10 to Figure 14, base 41 is detachably connected with rollover stand, and the bottom of base 41 is provided with fastener 411, upset Setting up has the knob 51 of the shackle member 50 fastened for fastener 411 and the activity of control shackle member 50.

Shackle member 50 is rotatably connected on rollover stand by rotating shaft 502, and the torsion for being used for the reset of shackle member 50 is provided with rotating shaft Spring, shackle member 50 include joint 501 and the retaining tips 503 coordinated for same knob 51, and knob 51 is in the form of a column, the side wall of knob 51 The breach 512 being pressed into including the side plate bending 511 for retaining tips 503 to be propped up and by retaining tips 503 inside knob 51.

In the present embodiment, by the rotation of knob 51, distance is propped for control the retaining tips 503 of shackle member 50, such as Shown in Figure 12, when retaining tips 503 are located at side plate bending 511, retaining tips 503 are propped in larger distance, and joint 501 is lifted Larger, joint 501 deviates from fastener 411 so that fastener 411 can be rotated and removed from rollover stand, and whole specimen cup 4 can be taken Under.

And it is as shown in figure 11, when retaining tips 503 are located at breach 512, retaining tips 503 are propped in small distance, are connect First 501 be lifted distance it is also smaller, now joint 501 be embedded in fastener 411 in, fastener 411 is firmly fastened on rollover stand, Fastener 411 can not be rotated and is deviate from.

And the torsion spring at rotating shaft 502 is the reset for shackle member 50, retaining tips 503 are enable to keep fitting in knob 51 side surface, i.e. joint 501 are in the state of insertion fastener 411.

The locating slot 510 for the insertion positioning of retaining tips 503, locating slot are equipped with inside side plate bending 511 and breach 512 Effect be to make retaining tips 503 be clamped in locating slot 510, only firmly turning knob 51 just can change fastener 411 State, switch between the state for separating and fastening.

Pre-treatment all-in-one in the utility model is as follows using process：

0) under unused state, specimen cup 4 is the state in separation, and specimen cup 4 is located at outside all-in-one；

1) 1 is assembled：SPE part 401 is loaded in sample cell 400, is placed at liquid outlet 4001；

2) 2 are assembled：Sample cell 400 is placed on top cover 404, and press mechanism is fastened in top cover by gland 402 On 404, sample cell 400 is firmly pressed on top cover 404 by the pressing plate 403 in press mechanism；

3) 3 are assembled：Top cover 404 is screwed at the top of pulverization cylinder 405, completes the assembling of storage cup 40；

4) it is loaded：Food samples to be detected are placed on base 41, the storage cup 40 that assembling finishes is screwed into button afterwards Tightly on base 41, the assembling of specimen cup 4 is completed；

5) install：Specimen cup 4 is arranged on rollover stand, turn knobs 51 are fastened fastener 411 by shackle member 50, complete Into the fixation of specimen cup 4；

6) take over：The conduit of liquid pump 3 and air pump 2 is connected on gas-liquid pipe 407, while the bottle of extractant is placed in admittedly In reservation 1, conduit connection liquid pump 3 and extractant bottle；

7) parameter setting：Set liquid volume added, mixing time, stirring interval, stirring number, extraction time, air pump pressurization gas Press gear；

8) stir：Start liquid pump 3, extractant, liquid volume added 5-30ml are injected into specimen cup 4；Start the band of driver 42 Move broken blade 410 to rotate, sample is shredded, mixing time 1-15s, stirring interval is 0-150s, and stirring number is 1-10 times；

9) extract：After stirring, specimen cup 4 is overturn 180 ° down by switching mechanism, and the compound in crushing chamber is through filter Net 406 filters out bulky grain and enters just filter chamber；The extract solution of initial filter intracavitary passes through the filtering of SPE part 401, will be tiny Particulate matter is stayed in SPE part 401, and liquid phase flows out from liquid outlet 4001；

10) sample collection：The liquid phase extract solution of outflow, the beaker on receiver 6, obtains liquid phase sample；Remove down Press mechanism, take out the solid phase sample that the SPE part 401 in sample cell 400 is obtained by extraction；Pre-treatment is completed.

It is described above to make preferred embodiment of the present utility model, do not depart from for the person of ordinary skill of the art On the premise of the utility model principle, some variations and modifications can also be made, these also should be regarded as protection of the present utility model Scope.

Claims (6)

1. one kind detection pretreating device, it is characterised in that：Including housing, operation module (91) and display panel (90), operation Module (91) and display panel (90) are respectively positioned on surface of shell；The housing includes inner chamber and open and close door (92), the inner chamber are set Have：

Multiple specimen cups (4), are blended for sample, filter and extract, and liquid outlet (4001), sample are provided with the top of specimen cup (4) Cup (4) includes base (41)；

Switching mechanism, the automatic turning for specimen cup (4)；Switching mechanism includes motor (8), gear (7) and rollover stand, described Specimen cup (4) is fixed on rollover stand, and rollover stand is fixed with gear (7) and synchronous axial system, motor (8) are connected with gear (7)；

Extractant fixed seat (1), putting and fixing for bottled extractant, located at the upper surface of case top；

Receiver (6), for putting extract solution container containing, receiver (6) surface is provided with beaker fixed seat (60), receiver (6) pull is arranged at inner chamber；The beaker fixed seat (60) is corresponding with specimen cup (4) position, and specimen cup (4) is with switching mechanism When overturning down, liquid outlet (4001) is directed at beaker fixed seat (60) down.

2. detection pretreating device according to claim 1, it is characterised in that：The inner chamber, which is additionally provided with, to be used for from extractant The liquid pump (3) of extractant conveying into specimen cup (4) is extracted in the extractant bottle of fixed seat (1), liquid pump (3) is fixed on inner chamber top The case inside in portion.

3. detection pretreating device according to claim 1, it is characterised in that：The inner chamber, which is additionally provided with, to be used for specimen cup (4) conveying gas is the air pump (2) of specimen cup (4) injection pressure in, and air pump (2) is fixed on the case inside of inner cavity top.

4. detection pretreating device according to claim 1, it is characterised in that：The base (41) and rollover stand are detachable Connection, base (41) bottom are provided with fastener (411), and rollover stand is provided with shackle member (50) and the control for being used for that fastener (411) to fasten The knob (51) of shackle member (50) activity.

5. detection pretreating device according to claim 4, it is characterised in that：The shackle member (50) passes through rotating shaft (502) it is rotatably connected on rollover stand, rotating shaft (502) place is provided with the torsion spring for being used for shackle member (50) reset, shackle member (50) bag Joint (501) and the retaining tips (503) coordinated for same knob (51) are included, the knob (51) is in the form of a column, knob (51) side Wall includes the side plate bending (511) for retaining tips (503) to be propped up and retaining tips (503) is pressed into knob (51) inside The locating slot for the embedded positioning of retaining tips (503) is equipped with inside breach (512), side plate bending (511) and breach (512) (510)。

6. detection pretreating device according to claim 4, it is characterised in that：The housing is in cuboid, operates mould Block (91), display panel (90) and open and close door (92) are respectively positioned on the surface of the positive front side of housing, operation module (91) and display surface Plate (90) is set by side, and operation module (91) is located at below display panel (90).