CN103759970B - Mouth of pipe reducing plug-in type sampling instrument - Google Patents
Mouth of pipe reducing plug-in type sampling instrument Download PDFInfo
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- CN103759970B CN103759970B CN201410040595.3A CN201410040595A CN103759970B CN 103759970 B CN103759970 B CN 103759970B CN 201410040595 A CN201410040595 A CN 201410040595A CN 103759970 B CN103759970 B CN 103759970B
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Abstract
The present invention relates to a kind of mouth of pipe reducing plug-in type sampling instrument, its structure comprises Taper Pipe, straight tube pipe, current stabilization separator tube, core pipe, shunting pressure regulator valve, tensimeter, sampling flexible pipe and concentric flow regulator etc.Sampling instrument of the present invention changes the composition of original Organic Pollution water sample acquisition device, structure and principle of work, have volume little, lightweight, applied widely, be easy to carry, easy for installation, simple to operate, use safety, the feature such as pollution section of avoiding sample in gatherer process, improve the fidelity of collected specimens, reduce the acquisition cost of sample, ensure that the safety of personnel, equipment, improve the universality of sampling instrument.
Description
Technical field
The present invention relates to a kind of harvester of the water sample containing volatilization, half volatile material, specifically a kind of mouth of pipe reducing plug-in type sampling instrument.
Background technology
Suffer the water sample of Organic Pollution, due to the singularity that it contains volatilization, half volatile material, the collection of its sample is different to the acquisition method of other water sample.
At present, the acquisition method of conventional Organic Pollution water sample is at the solid fire hose of the pump line mouth place larynx banding extracting pollution water sample, then by mode collected specimens that four-way is shunted.Sample unit used mainly comprises sample collection four-way, four-way shunt, has the fire hose of lining, larynx hoop, large fittings, straight pipe, connect snap ring, tensimeter, spigot-and-socket adapter tower seat, pressure regulator valve, venting valve, transparent pressure-resistant plastic flexible pipe, flattening formula flow regulator and stainless-steel tube etc. soon, first to carry out assembling and the in-site installation of sample collecting apparatus during sampling, assemble and install kit used and consumptive material comprises screwdriver, pipe wrench, spanner, raw material band, PVC glue, angle grinding machine etc.
The assembling mode of sample collecting apparatus is: the port one of sample collection four-way adopts inserted type quick coupling to connect with four-way shunt; The port two-way of sample collection four-way crosses screwed connection tensimeter; Screwed connection spigot-and-socket adapter tower seat is crossed in the port threeway of sample collection four-way, and the other end of spigot-and-socket adapter tower seat connects one end of transparent plastic hose, outside solid with larynx banding; Transparent plastic hose is sleeved in flattening formula flow regulator, and other end larynx hoop is fastened on one end of stainless-steel tube; The port four-way of sample collection four-way crosses screwed connection spigot-and-socket adapter tower seat, and the other end of spigot-and-socket adapter tower seat connects one end of transparent plastic hose, outside solid with larynx banding; The other end larynx hoop of transparent plastic hose is fastened on one end of spigot-and-socket adapter tower seat, and the other end of spigot-and-socket adapter tower seat is by screwed connection pressure regulator valve.
The mode of operation of water sampling is: the current extracted in the pump line of pollution water sample are entered in sampling bottle by fire hose, four-way shunt, sample collection four-way, transparent pressure-resistant plastic flexible pipe and stainless-steel tube successively.When carrying out sample collection, regulate the discharge of venting valve and pressure regulator valve successively, make manometric reading be 0.25MPa; Regulating the opening degree of transparent pressure-resistant plastic flexible pipe by flattening formula flow regulator, making the aquifer yield of stainless-steel tube be respectively 4ml/s(for the pollution water sample containing half volatile material) and 2ml/s(for the pollution water sample containing volatile matter).After pollution water sample fills sampling bottle, be tamping bottleneck, be inverted micro-striking, in bottle, bubble-free produces, and namely completes the sample collection of pollution water sample.
Traditional acquisition mode Problems existing of above-mentioned Organic Pollution water sample is:
(1) fire hose used in sample collecting apparatus, transparent pressure-resistant plastic flexible pipe, raw material band etc. are contaminated samples easily, makes sample distortion; Particularly in initial use procedure several times, the objectionable constituent of material therefor release can produce a very large impact the quality of sample, contaminated samples.
(2) parts of sample collecting apparatus are many, and form complicated, general assembly (TW) is greater than 80kg, bulky, carries inconvenience.
(3) Assembling program is complicated, and complex operation is consuming time longer.Section components adopts American Standard, is unfavorable for connection each other, operation inconvenience.
(4) sample collection four-way and sample flow through pipeline turning round and reducing position easily produce cavitation, when the vacuum tightness in air pocket is greater than the saturated vapor pressure of some volatile matter in water or half volatile material, the spilling of these volatility or half volatile material can be caused to scatter and disappear, make sample distortion.
(5) water flow adopts " flattening formula " flow regulator to control, during adjust flux, the streamline bundle of water gradually becomes " flat " shape by " cylinder " shape, change the shape of streamline bundle, add the probability of intermolecular mutual collision, make the probability increase of the volatilization in Organic Pollution water sample, the precipitation of half volatile material.
(6) when pump head or power larger time, due to the reacting force of mouth of pipe water outlet, swinging of the venting valve being arranged on fire hose head can be caused, as controlled loosely, can produce to clash into operating personnel and surrounding objects and threaten.
(7) maximum specification of the suction pump mouth of pipe that sample collecting apparatus can dock is DN100, scene is greater than to the pump line of this specification, then can not carries out sampling operation because docking.
(8) aquifer yield of the terminal stainless-steel tube of raw sample harvester is too little, sample collection overlong time, make the duration of contact of water sample and air longer, the volatility in water sample or half volatile material had so both easily been made to scatter and disappear, easily make again the reducing substances in water sample oxidized, cause sample distortion.
For water pollution survey and appraisal, the collection of sample has the effect of " taking over from the past and setting a new course for the future ".The height of sample fidelity directly has influence on the judgment accuracy of field investigation work in early stage and the authenticity of later stage indoor sample analysis result, significant to the degree and scope correctly evaluating water pollutions.
Sample error is too large, causes evaluation result and the diametrically opposite conclusion of actual conditions sometimes.If it is lost more that sample collection process makes the polluter in sample overflow, cause indoor detected value on the low side compared with actual value, just likely suffering contaminated waters be evaluated as uncontaminated or pollute light waters, pollution can not get paying attention to, and continues on for producing and life, finally makes pollution level continue to expand, directly affect the quality of life of the people, drink for the production of, life for a long time, cause people's body damage, directly affect the sound development of national economy.
In sample collection process, water sample be subject to sampling instrument material improper use and in the sample caused polluter content increase, make indoor detected value higher than actual value, just likely divided into polluted or the region of heavy contamination polluting or suffering to pollute lighter region, waste treatment cost on the one hand, on the other hand the mood of the masses ignorant of the fact is affected, is unfavorable for the stable of society.
Summary of the invention
Object of the present invention is just to provide a kind of mouth of pipe reducing plug-in type sampling instrument being convenient for carrying, assembling and operating, and to overcome the deficiency that existing sample collecting apparatus exists, reduces the distortion of water sample to greatest extent, improves universality and the security of sampling instrument.
The present invention is achieved in that a kind of mouth of pipe reducing plug-in type sampling instrument, comprising:
Some joints can connect and the identical Taper Pipe of tapering successively, exporting in pump line, steadily carrying pollution water sample for inserting pollution water sample; Adjacent described Taper Pipe is coordinated by the mutual grafting of the bell and spigot of end, described bell and spigot has the through hole of the some cross-under securing members be uniformly distributed along the circumference, the described Taper Pipe of described bell and spigot inboard is welded with nut, and the center pit of described nut communicates with described through hole;
Some can connect and the identical straight tube pipe of caliber successively, are connected to the osculum end of the minimum described Taper Pipe of a joint of aperture, to export insertion depth in pump line for extending described Taper Pipe at pollution water sample;
Current stabilization separator tube, its one end is openend, and be connected in the end port of described straight tube pipe, the other end is blind end, and the sidewall near blind end offers the valve interface connecting shunting pressure regulator valve;
Core pipe, cross-under is in described current stabilization separator tube, and its end facing water near the openend of described current stabilization separator tube, and is fixedly connected in described current stabilization separator tube by stator, its water side passes from the blind end of described current stabilization separator tube, and the water side of described core pipe is connected to collar joint;
Shunting pressure regulator valve, is arranged on the described valve interface of described current stabilization separator tube, for regulating the water flow pressure of pollution water sample in straight tube pipe;
Tensimeter, is arranged on the tube wall of described current stabilization separator tube, for detecting the water flow pressure of pollution water sample in current stabilization separator tube;
Sampling flexible pipe, be connected to be arranged at described core pipe water side described collar joint on, for guiding out pollution water sample under laminar condition to carry out water sampling from described core pipe; And
Concentric flow regulator, is socketed on described sampling flexible pipe, for regulating the uninterrupted gathering water sample.
Described concentric flow regulator is the axial core bore having flexible pipe of sampling described in cross-under in the body of rod of holding rod and the horizontal rope through communicated with described core bore, the rotating shaft euphroe being wound around fastening rope is provided with in one end of described holding rod, described rope through is relative with described rotating shaft euphroe, the fastening rope pulled out from described rotating shaft euphroe is through described rope through after passing into described core bore, its end winding support is on the body of rod of described holding rod; Described fastening rope encloses around described sampling flexible pipe one in described core bore.
The Taper Pipe used in the present invention has some joints, a combination tapered cylinder can be connected to form, inserting pollution water sample exports in pump line, the size of pump line caliber so just can be exported according to pollution water sample, combine the Taper Pipe (and even omitting Taper Pipe) of corresponding aperture, the pollution water sample making sampling instrument of the present invention can insert various caliber exports in pump line and carries out water sampling, thus forms the plug-in type water sample acquisition device of mouth of pipe reducing.
The end facing water of described core pipe is inclined-plane opening, and open section and horizontal direction angle are 55 ° ~ 56 °, and the runing counter to towards the opening direction with the described valve interface on described current stabilization separator tube of inclined-plane opening.After current enter current stabilization separator tube, owing to being subject to the impact of shunting pressure regulator valve shunting, the water yield that in current stabilization separator tube, shunting side is flow through is relatively many, for keeping entering the steady of core pipe current streamline, so adopt core pipe end facing water inclined-plane opening to run counter to such design towards with the opening direction of valve interface on current stabilization separator tube.
Described rotating shaft euphroe is provided with in the upper end of described holding rod axially to deflect away from outside core bore and cylinder seat opposing upper and lower and vertical shaft seat, and the top of described cylinder seat is opening end, and the base plate of described cylinder seat has jack hole; In described vertical shaft seat, be connected with the rotatable vertical shaft as governor motion, the upper end of described vertical shaft is stretched in described cylinder seat through described jack hole, is provided with the outer tooth bar that a circle is parallel to vertical shaft axial line in the upper end of described vertical shaft; Be provided with to lock in axial sliding in described cylinder seat and put ring, the inner ring surface putting ring is provided with the inner rack that a circle can be meshed with the described outer tooth bar on described vertical shaft at described lock; In described cylinder seat, be provided with top spring, make described lock put ring under normal conditions by overhead to the position mutually concordant with described cylinder seat upper port, with by tooth bar engagement locking described in vertical shaft; The body of rod between described cylinder seat and described vertical shaft seat of described holding rod has horizontal eyelet, and the described fastening rope passed from described eyelet is fixed on described vertical shaft; Prismatic key hole is had in the upper surface of described vertical shaft.
The degree of depth of described key hole is after key is inserted into the end, makes described lock put ring and is pressed down by key and depart from and the engaging of the described outer tooth bar on described vertical shaft.
The lower end of the described outer tooth bar that described lock is put on the upper end of the described inner rack in ring and described vertical shaft is respectively the pointed shape be convenient to mutual grafting and coordinated.
The profile of tooth that described lock puts the described inner rack in ring and the described outer tooth bar on described vertical shaft is respectively triangle.
Described rotating shaft euphroe is provided with in the upper end of described holding rod axially to deflect away from outside core bore and housing opposing upper and lower and axle bed, in described housing, upright rotating shaft is housed, the lower end of described rotating shaft passes described housing and is movably connected on described axle bed, the upper end of described rotating shaft is connected to the wheel disc brought and take turns edge, the axial internal tooth of a circle is provided with along inner side at the wheel of described wheel disc, described rotating shaft is provided with the profile of tooth section of the axial external tooth of a length of tape, the toggle mechanism making described axis of rotation by stirring described profile of tooth section is housed in described housing, the press handle of described toggle mechanism stretches out from stirring in window of outputing of described housing sidewall, the internal tooth be provided with on wheel disc described in clamping in described case top makes the lockable mechanism of rotating shaft stop, described fastening rope is connected on the revealed section of described rotating shaft.
Described toggle mechanism is, in the cylinder circle of the described rotating shaft of socket, press handle is housed, the side opening of described cylinder circle is stretched out in one end of described press handle, built-in section of described press handle is socketed with retracing spring, the inner face of described press handle is cancave cambered surface, is shaped with the end tooth that can be meshed with the profile of tooth section in described rotating shaft at the inner face of described press handle.
Described lockable mechanism comprises two shift forks and the fan-shaped shifting block between two described shift forks, one end of two described shift forks be hinged on respectively from described cover top plate, reach described wheel disc wheel along on the inwall of an opening inner core circle of inner side, the free joint end of two described shift forks stretches out the open section of described opening inner core circle respectively, and under the stirring of described shifting block, be connected on the described internal tooth on described wheel disc medial surface; The top spring promoting described shift fork return is respectively equipped with between the middle part of the lateral surface of two described shift forks and the inwall of described opening inner core circle; Described shifting block is connected to turning handle by coupling shaft, and described turning handle is arranged on the lateral surface of described cover top plate.
Sampling instrument of the present invention effectively improves sample fidelity, is embodied in the following aspects:
(1) material category used is single, not pollution water sample.Each parts that sampling instrument of the present invention contacts with water material used only has 304 stainless steels and two kinds, silica gel, its physics, stable chemical performance, do not disengage material, avoid improper due to the materials'use of sampling instrument itself in sample collection process and artificial pollution that is that cause.
(2) using Taper Pipe as water inlet, the grain direction after making current enter sampling instrument changes slowly; Establish core pipe in current stabilization separator tube, maintain current at the constant inner diameter going out the section of stream pipeline, the streamline of water is steady; Two kinds of measures all effectively prevent the generation of air pocket, thus reduce the spilling probability of volatilization, half volatile material.
(3) hose discharge of sampling adopts concentric flow regulator to carry out controlling and regulating, and makes the streamline bundle of water remain " cylinder " shape, reduces the probability of volatilization, the precipitation of half volatile material.
(4) Stress control of sampling instrument of the present invention is at 0.18 ~ 0.2MPa, reduces 0.5 ~ 0.7MPa, reduce the pressure gradient of sample collection process compared with the controlled pressure of raw sample harvester; In addition, the internal diameter of the sampling flexible pipe of sampling instrument of the present invention increases to 6mm, it is 2.25 times of sectional area in raw sample harvester rising pipe, improve sample collection efficiency, decrease the duration of contact of water sample and air, avoid volatilizing in sample as far as possible, the scattering and disappearing of half volatile material, reduce reducing substances in water sample and contact the oxidation reaction produced with air, improve the fidelity of sample.
The parts composition of sampling instrument of the present invention is simple, be particularly suitable for the pump line that water delivering orifice has the foreign matters such as ring flange, in-site installation is convenient, and easy and simple to handle, volume is little, lightweight, easy to carry, thus, both decreased personnel needed for sample collection and equipment delivery vehicle, turn improve the day collecting quantity of sample, thus achieve the significantly reduction of sample collection cost.
Sampling instrument of the present invention is not flexible coupling parts, even if run into large lift or powerful water pump, there will not be parts to get rid of the phenomenon of pendulum to surrounding yet, to staff and surrounding objects without any threat, eliminates the potential safety hazard in sampling work.
In addition, all parts of sampling instrument of the present invention all adopt GB, there is wider universality, the pump line mouth specification that can dock is respectively DN150, DN125, DN100, DN80, DN65, DN50, DN40, DN32, DN25 totally nine, the maximum pump line mouth specification gathering water sample expands DN150 to, meets the sampling needs of conventional water pump pump line mouth among the people.
Sampling instrument of the present invention changes the composition of original Organic Pollution water sample acquisition device, structure and principle of work, have volume little, lightweight, applied widely, be easy to carry, easy for installation, simple to operate, use safety, the feature such as pollution section of avoiding sample in gatherer process, improve the fidelity of collected specimens, reduce the acquisition cost of sample, ensure that the safety of personnel, equipment, improve the universality of sampling instrument.
Accompanying drawing explanation
Fig. 1 is the structural representation of sampling instrument of the present invention.
Fig. 2 is the syndeton schematic diagram of Taper Pipe.
Fig. 3 is the unitized construction schematic diagram of current stabilization separator tube and core pipe.
Fig. 4 is the structural representation of concentric flow regulator embodiment 1.
Fig. 5 is the structural representation of concentric flow regulator embodiment 1 key used.
Fig. 6 is the structural representation of concentric flow regulator embodiment 2.
Fig. 7 is that the A-A of concentric flow regulator shown in Fig. 6 is to cut-open view.
Fig. 8 is that the B-B of concentric flow regulator shown in Fig. 6 is to cut-open view.
Embodiment
As shown in Figure 1, sampling instrument of the present invention comprises more piece Taper Pipe 6, many straight tube pipes 5, current stabilization separator tube 4, core pipe 10, shunting pressure regulator valve 9, tensimeter 7, ingredient such as sampling flexible pipe 1 and concentric flow regulator etc.Wherein, Taper Pipe 6, straight tube pipe 5, current stabilization separator tube 4 and core pipe 10 etc. are all make with 304 stainless steels, and sampling flexible pipe 1 is the withstand voltage transparent hose made with silica gel.
Configurable 4-6 joints of Taper Pipe 6, tapering preferably controls at 6.5 ° ~ 7 °, and the tapering of each pitch cone pipe is identical, and five pitch cone pipes can connect to form a combination tapered cylinder successively.In Fig. 2, adjacent two pitch cone pipes 6 are coordinated by the mutual grafting of the bell and spigot of end, bell and spigot have the through hole be uniformly distributed along the circumference, in through-holes cross-under securing member, to achieve a fixed connection.The madial wall being positioned at an inboard pitch cone pipe in bell and spigot is welded with nut 14, and the center pit of nut 14 communicates with through hole, and so just only can be screwed into screw rod 13 from outside can fix.Screw rod 13 can select thumb screw, can install fixing by hand.This Taper Pipe connects fit system, is applicable to thin-walled Taper Pipe, the overall weight of device is alleviated further.
The pump line that the caliber used for scene is less, can as the case may be, from the front end of combination tapered cylinder in turn except the Taper Pipe of lower large gauge, so that combination tapered cylinder is to the insertion in pump line.Internal and external screw thread form in threaded port between adjacent Taper Pipe can be replaced mutually; O shape cushion rubber should be arranged seal in Taper Pipe junction.In addition, the threaded port on Taper Pipe 6 both can with the tube walls parallel of Taper Pipe, also can be shaped with certain gradient, the latter be more convenient for installation and removal.When pump line aquifer yield is less, can in the outer felt of the big opening end of combination tapered cylinder around some flexible things, formed and effect is crammed to pump line inwall gap, to make current as far as possible all by combination tapered cylinder, thus increase the discharge pressure of follow-up core pipe.
Straight tube pipe 5 is isometrical straight tube, and 40-50cm mono-saves, configurable 4-6 joints, its one end is external screw joint, the other end is internal thread interface, so that realize connection each other, and can be threaded with the osculum end of the Taper Pipe of minimum gauge and current stabilization separator tube 4 respectively.The hickey at straight tube pipe 5 two ends preferably also has certain gradient, so that installation and removal.Also be provided with O shape cushion rubber at the hickey place of straight tube pipe 5 to seal.
In Fig. 3, the left end of current stabilization separator tube 4 is openend, is connected in the end port of straight tube pipe 5, and right-hand member is blind end, and the sidewall near blind end offers valve interface 11, in order to connect shunting pressure regulator valve 9.The aperture of adjustment shunting pressure regulator valve 9, just can regulate the water flow pressure of the pollution water sample flowing through current stabilization separator tube 4.Shunting pressure regulator valve 9 can use ball valve, butterfly valve, stop valve, gate valve etc., is preferred with ball valve.Current stabilization separator tube 4 also has pressure gauge connection, Bonding pressure table 7.Tensimeter 7 is in order to detect the water flow pressure of the pollution water sample flowed through in current stabilization separator tube 4, and the adjustment of pressure regulator valve 9 is shunted in instruction.
In current stabilization separator tube 4, cross-under has core pipe 10, and the end facing water of core pipe 10 near the openend of current stabilization separator tube 4, and is fixedly connected in current stabilization separator tube 4 by three stainless steel stators 12.The end facing water of core pipe 10 is inclined-plane opening, and open section and horizontal direction angle are 55 ° ~ 56 °, and the runing counter to towards the opening direction with the valve interface 11 on current stabilization separator tube 4 of inclined-plane opening.Three stators 12 are uniform along the tube wall cylindrical of core pipe 10, and longitudinally to arrange along tubular axis line with the angle of core pipe radial section 60 °, to reduce the impact on current as far as possible.The water side of core pipe 10 passes from the blind end of current stabilization separator tube 4, and is fixedly connected with the blind end of current stabilization separator tube 4.The water side of core pipe 10 is connected to collar joint 8, connects sampling flexible pipe 1 with reliable and stable.
Sampling flexible pipe 1 is the flexible pipe made with silica gel, its one end is connected on collar joint 8 that the water side of core pipe 10 connects, the other end, through concentric flow regulator (Fig. 1), is regulated the uninterrupted gathering water sample by concentric flow regulator.The extension elongation of the free end of sampling flexible pipe 1 should be no less than 30cm.
Concentric flow regulator has axial core bore in a staight shank holding rod 3, sampling flexible pipe 1 is through the axial core bore of staight shank holding rod 1, the upper end of holding rod 1 is provided with rotating shaft euphroe 2, the extension elongation of the free end after sampling flexible pipe 1 passes holding rod 1 should be no less than 30cm, carries out water sampling operation so that insert in sampling bottle.
Fig. 4 is the first specific implementation of concentric flow regulator.
As shown in Figure 4, this concentric flow regulator has axial core bore in a staight shank holding rod 3, sampling flexible pipe 1 is through the core bore of holding rod 3, the rotating shaft euphroe 2 horizontally rotated is provided with in one end of holding rod 3, the governor motion of rotating shaft euphroe 2 is fixed with fastening rope 20, and fastening rope 20 is embedded in the locating groove 301 outputed in holding rod 3 end (referring to Fig. 7) after enclosing around sampling flexible pipe 1 one.
In Fig. 4, rotating shaft euphroe 2 is that one end of holding rod 3 is provided with cylinder seat 205 and vertical shaft seat 209, and cylinder seat 205 is relative with vertical shaft seat about 209, and the upper end of cylinder seat 205 is opening end, and the lower surface of cylinder seat 205 has core bore; In vertical shaft seat 209, be connected with vertical shaft 202, the upper end of vertical shaft 202 is stretched in cylinder seat by the core bore on cylinder seat lower surface.The axis parallel of vertical shaft 202 is in the axial line of holding rod 3, and vertical shaft 202 can rotate by opposed axle bed 209.The set-up mode of vertical shaft can be connected with metal ring 208 at the bottom positioning end of vertical shaft 202, after ring set end is inserted the position, hole on vertical shaft seat 209, then shelters from ring set 208 with cover plate 207, vertical shaft 202 is positioned in vertical shaft seat 209.Cover plate 207 is fixed on vertical shaft seat 209, with covers aperture position by securing member.The upper free ends of vertical shaft 202 is arranged in cylinder seat 205, is provided with at the free end of vertical shaft 202 the outer tooth bar that a circle is parallel to vertical shaft center line.Fastening rope 20 is through after the eyelet holding rod 3 inside core bore, and fixing also solderless wrapped connection is on the revealed section of vertical shaft 202.On the eyelet of the cross-under fastening rope holding rod 3 between cylinder seat and vertical shaft seat.The end face of the free end of vertical shaft 202 has the quadrangular of grafting unlock key or the jack 210 of hexagon.Be provided with to lock in axial sliding in cylinder seat 205 and put ring 201, the sidewall putting ring 201 at lock has notch 203, utilize the screw 204 of cross-under cylinder seat 205 sidewall and lock coordinating of the notch 203 put on ring, lock can be made to put ring 201 can only slide axially and can not rotate in cylinder seat 205.The inner ring surface that ring 201 put by lock is provided with the inner rack that a circle can be meshed with the outer tooth bar on vertical shaft 202.In cylinder seat 205, be provided with spring 206, make lock put ring 201 under normal conditions by overhead to the position mutually concordant with cylinder seat 205 port, with by locking engaging each other of the inner rack put on ring and the outer tooth bar on vertical shaft 202, and by vertical shaft 202 locking firmly.
Put ring 201 moving up and down in process occur that the situation that the increment of inside and outside tooth bar pins mutually occurs for avoiding locking, lower end lock can being put the outer tooth bar on the upper end of inner rack in ring 201 and vertical shaft 202 is made for the pointed shape of triangle etc., respectively so that the mutual grafting of inside and outside tooth bar coordinates.
Lock is put to the unlocking operation of ring 201, by custom-designed unlock key 211(Fig. 5) carry out; To the flow regulation of sampling flexible pipe 1, also operated by unlock key 211.In Fig. 3, unlock key 211 is provided with the inserted link 212 that pushing lock puts the external toroidal ring 213 of ring and the quadrangular of grafting vertical shaft or hexagon.To be plugged in the prismatic jack 210 on vertical shaft 202 after (being inserted into the end) when inserted link 212, external toroidal ring 213 on unlock key 211 pushes in cylinder seat 205 with putting ring 201 by lock, the outer tooth bar locked on the inner rack put on ring and vertical shaft 202 is separated, now, by rotating the handle of unlock key, vertical shaft 202 can be stirred clockwise or rotate counterclockwise, the fastening rope 20 be connected on vertical shaft 202 is made to be tightened up or to loosen, thus to fastening rope around sampling flexible pipe 1 carry out concentric folding and unfolding, the streamline bundle of collection water sample is made to remain " cylinder " shape, thus reduce volatilization, the probability that half volatile material is separated out.
In Fig. 4, the core bore inwall of holding rod 3 can be made the ring groove (relative with the eyelet of cross-under fastening rope) that a degree of depth is about 2mm, to make fastening rope 20 can in embedded groove, freely hoop slides.
Fig. 6-Fig. 8 is the second specific implementation of concentric flow regulator.
As shown in Figure 6, Figure 7, concentric flow regulator has axial core bore in the holding rod 3 of a staight shank shape, cross-under sampling flexible pipe 1 in core bore, the body of rod of holding rod 3 has the horizontal rope through communicated with core bore, the rotating shaft euphroe being wound around fastening rope is provided with in one end of holding rod 3, the fastening rope 20 pulled out from rotating shaft euphroe is at the rope through passed on holding rod 3 and after passing into core bore, its end winding support is on the body of rod of holding rod 3.
The termination fixed form of fastening rope 20 can have multiple, one is can output a bar tangent with core bore edge to stitch 301 in the upper surface of holding rod 3, the degree of depth of bar seam reaches the height of rope through, and the termination of fastening rope 20 is rabbeted and is fixed in this seam 301 on holding rod 3 (Fig. 7); Two be can in holding rod 3 through rope through, the termination of fastening rope 20 passes rope through, is fixed on the body of rod of holding rod 3.After sampling flexible pipe 1 penetrates the core bore of holding rod, fastening rope 20 encloses around sampling flexible pipe one in core bore, forms ring type and tightly restraints governor motion.
The core bore aperture of holding rod 3 is preferably identical with the external diameter of the sampling flexible pipe 1 of institute cross-under.Because sampling flexible pipe 1 self has good elasticity, therefore, it is possible to successfully cross-under holding rod core bore.After adopting the set-up mode of same diameter, with the core bore inwall of the mutually level holding rod of rope through on just should make a ring groove around core bore inwall, fastening rope can be free to slide in grooved ring shape, to facilitate the stretching of fastening rope 20 to regulate, and reduce the deformation effect of the non-annulus even avoided sampling flexible pipe 1.
As shown in Figure 6, described rotating shaft euphroe is provided with in the upper end of holding rod 3 axially to deflect away from outside core bore and housing opposing upper and lower 214 and axle bed 223, and upright rotating shaft 222 is housed in housing 214.After the lower end of rotating shaft 222 passes Housing Base 221, be movably connected on axle bed 223.The upper end of rotating shaft 222 is connected to the circular wheel disc 211 brought and take turns edge, the axial internal tooth of a circle is provided with along inner side at the wheel of wheel disc 211, rotating shaft 222 is provided with the profile of tooth section of the axial external tooth of a length of tape, in housing 214, toggle mechanism is housed, by stirring of the profile of tooth section on countershaft 222, rotating shaft 222 is rotated thereupon.In toggle mechanism, be provided with the press handle 219 implementing to stir operation, the outboard end of press handle 219 stretches out from stirring in window of outputing of the sidewall at housing 214.The inside top of housing 214 is provided with lockable mechanism, and lockable mechanism, by the clamping to the internal tooth on wheel disc 211, makes rotating shaft 222 stop.Fastening rope 20 is connected on the revealed section of rotating shaft 222, and the revealed section of rotating shaft 222 is between housing 214 and axle bed 223.
As shown in Fig. 6, Fig. 8, described toggle mechanism comprises cylinder circle 218, press handle 219 and retracing spring 220; Cylinder circle 218 is socketed in the middle part of rotating shaft 222, and press handle 219 is arranged in cylinder circle 218; The side opening of cylinder circle 218 is stretched out in one end of press handle 219, and retracing spring 220 is socketed in cylinder circle built-in section of press handle 219.In Fig. 3, the inner face of press handle 219 is can the cancave cambered surface of coated rotating shaft 222, and be shaped with end tooth at the inner face of press handle 219, end tooth is axially arranged, and is covered with the inner face of press handle, and can engages each other with the profile of tooth section in rotating shaft 222.When press...with one's finger lower press handle 219 time, namely namely the end tooth on press handle 219 inner face engages each other with the profile of tooth section in rotating shaft 222, and now available finger makes rotating shaft 222 rotate by stirring press handle 219 thereupon.After unclamping finger, retracing spring 220 promotes press handle 219 return, and namely the end tooth on press handle 219 departs from voluntarily with the profile of tooth section in rotating shaft 222.
The effect being arranged on the lockable mechanism in rotating shaft euphroe 2 is by the clutch operation to wheel disc 211, makes rotating shaft 222 lock or unclamp.As shown in Figure 1 and Figure 2, lockable mechanism comprises two shift forks 216 and the fan-shaped shifting block 215 between two shift forks, one end of two shift forks 216 is hinged on the inwall of opening inner core circle 212 respectively, the upper edge of opening inner core circle 212 is fixed on inside the top board of housing 214, opening inner core circle 212 extends downwardly into the wheel of wheel disc 211 along inner side, and opening inner core circle 212 is provided with the open section that a central angle is about 120 °.The free joint end of two shift forks 216 stretches out the open section of described opening inner core circle 212 respectively, and under the stirring of shifting block 215, can be connected on the internal tooth on wheel disc 211 medial surface.In Fig. 2, be respectively equipped with between the middle part of the lateral surface of two shift forks 216 and the inwall of opening inner core circle 212 and push up spring 217, to promote shift fork self-return.Shifting block 215 is connected to by coupling shaft the turning handle 213 controlling clutch operation, and turning handle 213 is arranged on the lateral surface of housing 214 top board.
During use, first pull turning handle 213, make the free joint end of shift fork 216 depart from the interior edge of wheel disc 211, wheel disc 223 is released, the press handle 219 press...withed one's finger again in lower toggle mechanism, end tooth on press handle 219 is engaged with the profile of tooth section in rotating shaft 222, by stirring press handle 219, rotating shaft 222 forward or reverse can be driven, adjustment is wrapped in the degree of drawing of the fastening rope 20 on sampling flexible pipe 1, with to fastening rope around sampling flexible pipe 1 carry out concentric folding and unfolding, the size of the interior circular section at place restrained by adjustment sampling flexible pipe 1, make to remain " cylinder " shape by the streamline bundle of the collection water sample in sampling flexible pipe 1, realize the object of flow adjustment sampling flexible pipe 1 being carried out to concentric-ring pattern thus, reduce the volatilization in sampling process in pollution water sample, the precipitation probability of half volatile material.After unclamping finger, the retracing spring 220 in toggle mechanism promotes press handle 219 return, and the profile of tooth section in the end tooth on press handle 219 and rotating shaft 222 is separated, then once adjust end.
The principle of work of sampling instrument of the present invention is: first as required and field condition, determine the pattern length connecting quantity and required straight pipe 5 of Taper Pipe 6 used; Then the combination tapered cylinder connected current stabilization separator tube 4 front end and straight pipe all insert pollution water sample and export in pump line, are tied up by current stabilization separator tube rope etc. and are fixed on pump line.After rear pump work, the water outlet of pump line mouth enters in current stabilization separator tube 4 by combination tapered cylinder and straight pipe, regulates shunting pressure regulator valve 9, makes the reading of tensimeter 7 be 0.18 ~ 0.2MPa; Grasp concentric flow regulator, stretching sampling flexible pipe 1, makes its water delivering orifice upward, exceeds the end face 800mm of current stabilization separator tube 21 also in erectility; Slow adjustment concentric flow regulator, makes the water polo face height of sampling flexible pipe 1 water outlet be less than 5mm, and guarantees to lose bubble in the current of sampling flexible pipe 1 inside and water outlet; The water delivering orifice of sampling flexible pipe 1 is slowly inserted in the sampling bottle (sample collection for containing half volatile material) of 2000ml, until distance is about 5 ~ 8mm at the bottom of the sampling water side of flexible pipe 1 and bottle, place motionless, when the water surface is from bottleneck distance about 50mm in bottle, slowly propose sampling flexible pipe 1.Carrying in pipe process, ensureing that the water surface distance in the sampling water delivering orifice of flexible pipe 1 and bottle is not more than 5mm, until sampling bottle fills water sample.Finally tighten bottle cap, be inverted micro-striking, in bottle, bubble-free produces, and namely completes the collecting work of large bottle sample.
When gathering the pollution water sample containing volatile matter, sampling flexible pipe 1 is slowly inserted in sampling bottle (2 40ml), along with the continuous rising of the water surface in bottle, slowly promote sampling flexible pipe 1, carry in pipe process, ensure that water delivering orifice and the water surface distance of sampling flexible pipe 1 are not more than 5mm, until fill water sample, tighten bottle cap, be inverted micro-striking, in bottle, bubble-free produces, and completes sample collection.
Sampling instrument of the present invention also can gather other water sample.
Claims (9)
1. a mouth of pipe reducing plug-in type sampling instrument, is characterized in that, comprising:
Some joints can connect and the identical Taper Pipe of tapering successively, exporting in pump line, steadily carrying pollution water sample for inserting pollution water sample; Adjacent described Taper Pipe is coordinated by the mutual grafting of the bell and spigot of end, described bell and spigot has the through hole of the some cross-under securing members be uniformly distributed along the circumference, the described Taper Pipe of described bell and spigot inboard is welded with nut, and the center pit of described nut communicates with described through hole;
Some can connect and the identical straight tube pipe of caliber successively, are connected to the osculum end of the minimum described Taper Pipe of a joint of aperture, to export insertion depth in pump line for extending described Taper Pipe at pollution water sample;
Current stabilization separator tube, its one end is openend, and be connected in the end port of described straight tube pipe, the other end is blind end, and the sidewall near blind end offers the valve interface connecting shunting pressure regulator valve;
Core pipe, cross-under is in described current stabilization separator tube, and its end facing water near the openend of described current stabilization separator tube, and is fixedly connected in described current stabilization separator tube by stator, its water side passes from the blind end of described current stabilization separator tube, and the water side of described core pipe is connected to collar joint;
Shunting pressure regulator valve, is arranged on the described valve interface of described current stabilization separator tube, for regulating the water flow pressure of pollution water sample in straight tube pipe;
Tensimeter, is arranged on the tube wall of described current stabilization separator tube, for detecting the water flow pressure of pollution water sample in current stabilization separator tube;
Sampling flexible pipe, be connected to be arranged at described core pipe water side described collar joint on, for guiding out pollution water sample under laminar condition to carry out water sampling from described core pipe; And
Concentric flow regulator, is socketed on described sampling flexible pipe, for regulating the uninterrupted gathering water sample;
Described concentric flow regulator is the axial core bore having flexible pipe of sampling described in cross-under in the body of rod of holding rod and the horizontal rope through communicated with described core bore, the rotating shaft euphroe being wound around fastening rope is provided with in one end of described holding rod, described rope through is relative with described rotating shaft euphroe, the fastening rope pulled out from described rotating shaft euphroe is through described rope through after passing into described core bore, its end winding support is on the body of rod of described holding rod; Described fastening rope encloses around described sampling flexible pipe one in described core bore.
2. mouth of pipe reducing plug-in type sampling instrument according to claim 1, it is characterized in that, the end facing water of described core pipe is inclined-plane opening, and open section and horizontal direction angle are 55 ° ~ 56 °, and the runing counter to towards the opening direction with the described valve interface on described current stabilization separator tube of inclined-plane opening.
3. mouth of pipe reducing plug-in type sampling instrument according to claim 1, it is characterized in that, described rotating shaft euphroe is provided with in the upper end of described holding rod axially to deflect away from outside core bore and cylinder seat opposing upper and lower and vertical shaft seat, the top of described cylinder seat is opening end, and the base plate of described cylinder seat has jack hole; In described vertical shaft seat, be connected with the rotatable vertical shaft as governor motion, the upper end of described vertical shaft is stretched in described cylinder seat through described jack hole, is provided with the outer tooth bar that a circle is parallel to vertical shaft axial line in the upper end of described vertical shaft; Be provided with to lock in axial sliding in described cylinder seat and put ring, the inner ring surface putting ring is provided with the inner rack that a circle can be meshed with the described outer tooth bar on described vertical shaft at described lock; In described cylinder seat, be provided with top spring, make described lock put ring under normal conditions by overhead to the position mutually concordant with described cylinder seat upper port, with by tooth bar engagement locking described in vertical shaft; The body of rod between described cylinder seat and described vertical shaft seat of described holding rod has horizontal eyelet, and the described fastening rope passed from described eyelet is fixed on described vertical shaft; Prismatic key hole is had in the upper surface of described vertical shaft.
4. mouth of pipe reducing plug-in type sampling instrument according to claim 3, it is characterized in that, the degree of depth of described key hole is after key is inserted into the end, makes described lock put ring and is pressed down by key and depart from and the engaging of the described outer tooth bar on described vertical shaft.
5. mouth of pipe reducing plug-in type sampling instrument according to claim 3, is characterized in that, the lower end of the described outer tooth bar that described lock is put on the upper end of the described inner rack in ring and described vertical shaft is respectively the pointed shape be convenient to mutual grafting and coordinated.
6. mouth of pipe reducing plug-in type sampling instrument according to claim 3, is characterized in that, the profile of tooth that described lock puts the described inner rack in ring and the described outer tooth bar on described vertical shaft is respectively triangle.
7. mouth of pipe reducing plug-in type sampling instrument according to claim 1, it is characterized in that, described rotating shaft euphroe is provided with in the upper end of described holding rod axially to deflect away from outside core bore and housing opposing upper and lower and axle bed, in described housing, upright rotating shaft is housed, the lower end of described rotating shaft passes described housing and is movably connected on described axle bed, the upper end of described rotating shaft is connected to the wheel disc brought and take turns edge, the axial internal tooth of a circle is provided with along inner side at the wheel of described wheel disc, described rotating shaft is provided with the profile of tooth section of the axial external tooth of a length of tape, the toggle mechanism making described axis of rotation by stirring described profile of tooth section is housed in described housing, the press handle of described toggle mechanism stretches out from stirring in window of outputing of described housing sidewall, the internal tooth be provided with on wheel disc described in clamping in described case top makes the lockable mechanism of rotating shaft stop, described fastening rope is connected on the revealed section of described rotating shaft.
8. mouth of pipe reducing plug-in type sampling instrument according to claim 7, it is characterized in that, described toggle mechanism is, in the cylinder circle of the described rotating shaft of socket, press handle is housed, the side opening of described cylinder circle is stretched out in one end of described press handle, built-in section of described press handle is socketed with retracing spring, the inner face of described press handle is cancave cambered surface, is shaped with the end tooth that can be meshed with the profile of tooth section in described rotating shaft at the inner face of described press handle.
9. mouth of pipe reducing plug-in type sampling instrument according to claim 7, it is characterized in that, described lockable mechanism comprises two shift forks and the fan-shaped shifting block between two described shift forks, one end of two described shift forks be hinged on respectively from described cover top plate, reach described wheel disc wheel along on the inwall of an opening inner core circle of inner side, the free joint end of two described shift forks stretches out the open section of described opening inner core circle respectively, and under the stirring of described shifting block, be connected on the described internal tooth on described wheel disc medial surface; The top spring promoting described shift fork return is respectively equipped with between the middle part of the lateral surface of two described shift forks and the inwall of described opening inner core circle; Described shifting block is connected to turning handle by coupling shaft, and described turning handle is arranged on the lateral surface of described cover top plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410040595.3A CN103759970B (en) | 2014-01-28 | 2014-01-28 | Mouth of pipe reducing plug-in type sampling instrument |
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| CN201410040595.3A CN103759970B (en) | 2014-01-28 | 2014-01-28 | Mouth of pipe reducing plug-in type sampling instrument |
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| CN103759970B true CN103759970B (en) | 2015-10-28 |
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| CN103759970A (en) | 2014-04-30 |
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