CN2800261Y

CN2800261Y - Dust sampling head

Info

Publication number: CN2800261Y
Application number: CN 200520073058
Authority: CN
Inventors: 范人杰
Original assignee: CHANGSHU MINE ELECTROMECHANICAL EQUIPMENT Co Ltd
Current assignee: CHANGSHU MINE ELECTROMECHANICAL EQUIPMENT Co Ltd
Priority date: 2005-06-22
Filing date: 2005-06-22
Publication date: 2006-07-26
Anticipated expiration: 2015-06-22

Abstract

The utility model relates to a dust sampling head, which belongs to a respiratory air collecting device for coal mines. The utility model comprises a rough particle depositing and collecting pipe; a rough particle separating seat, wherein the rough particle separating seat is provided with a clamping foot, an air inlet, an air inlet groove and an air flow circle cavity, the air inlet is communicated with the air inlet groove, the air inlet groove is communicated with the air flow circle cavity, and the air flow circle cavity is communicated with the rough particle depositing and collecting pipe; a casing, wherein the casing is provided with a casing cavity and is connected with the upper part of the rough particle separating seat, an air ventilating pipe is arranged in the casing cavity, the circumference of the air ventilating pipe is recessed to form a seal ring groove, and a seal ring is arranged in the seal ring groove; a dust collecting box, wherein the dust collecting box is provided with a dust collecting cavity and is arranged in the casing cavity, the dust collecting box is provided with a flange with an air ventilating hole in the center of the dust collecting cavity, and the air ventilating hole is communicated with the air ventilating pipe; a filter membrane and a filter screen, the step of the dust collecting cavity is covered with the filter membrane and the filter screen which are overlapped; a dust collecting box cover is arranged on the dust collecting box; a top cover, wherein the top cover is in fitting connected with the casing and is sealed with the dust collecting box cover, the outer top part of the top cover is narrowed to form an air suction opening and the air suction opening is communicated with the air ventilating pipe. The utility model has the advantages of reasonable structure, convenient assemblage, small size, light weight, good sealing effect and large dust containing capacity.

Description

The dust sampling head

Technical field

The utility model relates to a kind of dust sampling head, connects on the portable individual dust sampler of using in the colliery, belongs to the harvester of colliery respiratory air.

Background technology

Need on individual dust sampler to that is to say that the pipeline that an end of pipeline (being generally flexible hose) is plugged into individual dust sampler is pegged graft and chewed, and the other end of pipeline is plugged on the dust sampling head by the pipeline dust sampling head that continues.The connected mode of individual dust sampler recited above and dust sampling head can also be 86205659.4 from the Chinese patent patent No., name is called the disclosed technology instruction of mining individual dust sampler and understands.Want as dust sampling that cube is little as first, compact conformation, to be convenient to take pendant, dust containing capacity big etc., because the air that the dust sampling head is gathered is the respiratory air, it by wearing from the pocket place on miner or reconnaissance person's mouth, near the nose position such as clothes top, left front place, ore deposit cap place or the like, so bigization of volume can't be brought the degree of obstruction to miner or sampling person, the weight of sampling head is also right.And be similar to by the waistband place of the general wearing of individual dust sampler of double pump sampling thief form the miner, China Patent No. 90205529.1 disclosed essential safe type collieries, make the dust sampling head suck air by the work of individual dust sampler, institute's inhaled air is identical with the air quality that the miner breathes, can reach the situation of measuring and grasp miner's respiratory exposure on every side dust in the work team like this, it is dust concentration, contrast relevant specification such as national standard again, examine the quality of the respiratory air in every cubic metres of air, so that take corresponding measure, thereby the guarantee miner's is healthy.

As shown in the above description, more exquisite as the texture ratio of dust sampling head, however exactly there is following drawback in the structure in the prior art, and the one, structure is not compact, volume is big, deal is heavy; The 2nd, the cooperation shortcoming sealing effectiveness between each parts is poor, both can have influence on the task performance of individual powder device, also can influence the collection effect of whole sampling head to air, and the dust that can cause in the gatherer process is escaped; The 3rd, dust containing capacity is little.

Summary of the invention

Task of the present utility model is to provide a kind of rational in infrastructure and cooperations that overall volume is little, each parts can embody dust sampling head excellent sealing, that dust containing capacity is big.

Task of the present utility model is finished like this, and a kind of dust sampling head comprises that a coarse grain sinks collector 8; The coarse granule separation seat 7 of one difference tool card base 74, air intake opening 73, air inlet duct 72, airflow cyclotron cavity 71, air intake opening 73 communicates with air inlet duct 72, air inlet duct 72 communicates with airflow cyclotron cavity 71 tops, and the outlet 711 of airflow cyclotron cavity 71 bottoms communicates with the heavy collector 8 of the coarse grain that is bolted in coarse granule separation seat 7 belows; One is connected in the housing 6 in the tool shell chamber 61 on coarse granule separation seat 7 tops, the centre extends one and is used for being stretched over the snorkel 63 that airflow cyclotron cavity 71 goes among the shell chamber 61, around the snorkel 63 that is positioned at shell chamber 61, be concaved with seal groove, be provided with O-ring seal 64 in the groove; The dust-collecting box 5 of one tool dust-collecting cavity 51 is contained in the shell chamber 61, and this dust-collecting box 5 is formed with the inward flange 52 of a tool air hole 521 in the central authorities of its dust-collecting cavity 51, and air hole 521 and snorkel 63 are corresponding and communicate; One filter membrane 4 and a filter screen 3, imbrication is on the step 54 of dust-collecting box 5 each other; One is used to cover and puts the control of dust lid 2 that goes on the dust-collecting box 5, the narrow snorkel 22 that shortened in top, and the bottom is concaved with seal groove 21, is embedded packing washer 211 in the groove, and packing washer 211 matches with the upper edge 53 of dust-collecting box 5; One top cover 1, matched with housing 6, this top cover 1 is provided with the O-ring seal 14 that is used for constituting with described control of dust lid 2 sealing on the top in Qi Gai chamber 11, the narrow air entry 13 that shortened into of the outer center of top of top cover 1, air entry 13 communicates with snorkel 22.

Be furnished with thread 81 on the upper end inwall of the heavy collector 8 of coarse grain described in the utility model, also be furnished with thread 75 in the lower end of described coarse granule separation seat 7 accordingly with it, thread 81 and thread 75 spiral shell are mutually joined.

Be furnished with card base screw 741 on the coarse granule separation seat 7 described in the utility model, described card base 74 is taken it by card base screw 741 and is fixed on the coarse granule separation seat 7.

The external wall of upper portion of housing 6 described in the utility model is provided with external thread 62, correspondingly described top cover 1 and be positioned at Qi Gai chamber 11 below be provided with internal screw thread 12 on the inwall, external thread 62 and internal screw thread 12 spiral shell are mutually joined.

Filter membrane 4 described in the utility model is nonmetal filter membrane.

Nonmetal filter membrane described in the utility model is any one in sponge or felt or the gauze.

Filter screen 3 described in the utility model is a metal screen.

Integrated lid 2 described in the utility model be shaped as the bamboo hat shape.

Integrated lid 2 described in the utility model be shaped as the bell jar shape.

It is plastics that coarse grain described in the utility model sinks the material of collector 8, coarse granule separation seat 7, housing 6, dust-collecting box 5, control of dust lid 2, top cover 1.

The utility model is rational in infrastructure, easy to assembly, volume is little, deal is light, sealing effectiveness is excellent, dust containing capacity is big.

Description of drawings

Fig. 1 is an assembling assumption diagram of the present utility model.

Fig. 2 is a cut-open view of the present utility model.

Fig. 3 is coupled to Application Example synoptic diagram on the individual dust sampler for the utility model.

Embodiment

See Fig. 1, Fig. 2, a material is that having of nonmetal as plastic base seal one is used to hold or claims to deposit the coarse grain dirt collector 8 of containing coarse grain dust, and this coarse grain sinks the tube chamber upper inside wall of collector 8 and is shaped on thread 81 in advance.One coarse granule separation seat 7 is also made for nonmetallic materials, for example is molded from plastic into type, and the bottom has thread 75, by thread 75 the heavy collector 8 of coarse grain is connected with coarse granule separation seat 7 both realizations.

Airflow cyclotron cavity 71 is a columniform chamber condition, and top is open, and the bottom is condensed to outlet 711 until narrow, exports in the tube chamber that 711 parts are stretched over the heavy collector 8 of coarse grain.Coarse granule separation seat 7 has extended air flue by a side, this air flue comprises air intake opening 73 and air inlet duct 72, both communicate, the air that enters from air intake opening 73 promptly is the respiratory air at mine scene, air enters after air inlet duct 72 enters into airflow cyclotron cavity 71 from air intake opening 73, in this process, the filter membrane 4 on the bigger particle reason top that is mingled with in the air, the obstruction of filter screen 3 and fall into airflow cyclotron cavity 71 enter from exporting 71 and enter the heavy collector 8 of coarse grain.By the version of coarse granule separation seat 8, the geography of can being not difficult solves the function with cyclone separating.By card base screw 741 card base 74 is fixed on the coarse granule separation seat 7, the function of card base 74 is to get so that the utility model wears to be affixed to approaches its mouth and nose as much as possible and breathe on the other or clothes left front of the coat pocket at position for the miner, and whole coarse granule separation seat 7 by bonding and so on mode and housing 6 mutually admittedly.

One housing 6 also is a plastic material, and central authorities are its shell chamber 61, and the centre is a snorkel 63 among the shell chamber 61, and the air hole 631 of snorkel 63 communicates with airflow cyclotron cavity 71, air hole 521 respectively.See again, around snorkel 63, be formed with a circle seal groove what be positioned at shell chamber 61, be equipped with O-ring seal 64 in the sealing ring recess, the applicant who ensures and be received in the shell chamber 61 by sealing circle 64 incites somebody to action in the back and then the sealing effectiveness between the dust-collecting box 5 that mentions, and more can understand it to this by Fig. 2.The side is prefabricated on the upper side is useful on the external screw teeth 62 that connects with top cover 1 at the outer wall of housing 6, as soon as after housing 6 connects with top cover 1, then dust-collecting box 5, filter membrane 4, filter screen 3, control of dust lid 2 are just therebetween, use locating them.

One is similarly the dust-collecting box of for example using plastic production 5 of nonmetal system, has a dust-collecting cavity 51 that is enough to hold thousands of milligrams of Dust Capacities, and the central authorities of dust-collecting cavity 51 are an inward flange 52, and the air hole 521 of inward flange 52 and snorkel 63 are corresponding and communicate.According to shown in Fig. 2 as can be seen, that part of of snorkel 63 that protrude in the shell chamber 61 are matched with inward flange 52 by the square.In addition, constitute a step 54 at the inner wall in the top of dust-collecting box 5, the thickness of this step 54 after both are superimposed for filter membrane 4, filter screen 8 just basically to the distance between the upper edge 53 that is to say that filter membrane 4, filter screen 3 are located on this step 54 rightly.

The bell jar shape or claim to be that bamboo hat shape or title are the pot cover shape and material also fits on the dust-collecting box 5 for control of dust lid 2 lids of plastics, owing to be preset with seal groove 21 on the control of dust lid 2, and be embedded with packing washer 211 in the seal groove 21, like this, when control of dust lid 2 lids are fitted on the dust-collecting box 5, packing washer 211 just with 53 close joining of upper edge of dust-collecting box 5, can prevent effectively air from they escape between the two from.The narrow air hole 221 that is formed in the snorkel 22 on the control of dust lid 2 that contracts communicates with the lid chamber 11 of top cover 1, and is more particularly corresponding with the air entry 13 of top cover 1 and communicate.

Also be spirally connected by the external screw teeth 62 on internal screw thread on it 12 and the housing 6 by foregoing with plastic top cover 1.The O-ring seal 14 on 11 tops, lid chamber of top cover 1 can and control of dust lid 2 between reach gratifying sealing effectiveness, can prevent that like this air from running phenomenon from the ease between control of dust lid 2 and the top cover 1, and the narrow air entry 13 that extends on the top cover 1 is to be used for being connected with it for an end of flexible pipe 9 with contracting, the end in addition of flexible pipe 9 is connected with individual dust sampler 10, to this, understood by Fig. 3.

The applicant narrates principle of work of the present utility model by Fig. 2 and in conjunction with Fig. 3 further, individual dust sampler shown in Figure 3 10 carried on the arm piggyback or be solid on miner's waistband, and with the utility model by card base 74 holdings from the carrier of miner's mouth and nose annex such as upper garment pocket place, the left front place.Press working power and be the power switch on the individual dust sampler 10 of charging form, membrane pump work in the individual dust sampler 10, at this moment, air forms flowing of going round and beginning again through air inlet duct 72, airflow cyclotron cavity 71, air hole 631,521, filter membrane 4, filter screen 3, air hole 221, air entry 13, flexible pipe 9, individual dust sampler 10 in regular turn from air intake opening 73.In flow process, be entrained in airborne comparatively big particle or claim grit to return coarse grain and sink in the collector 8 because of the obstruct that is subjected to filter membrane 4, filter screen 3, fine trifle in the world then productive set in the dust-collecting cavity 51 of dust-collecting box 5.If a sampling period is a work team (8 hours), so after reaching a work team promptly after gathering the gas sample of a work team, open as long as top cover 1 revolved, top cover 1 and housing 6 are separated, then with control of dust lid 2, filter screen 4, filter membrane 3, dust-collecting box 5 is placed on weighing utensil such as the Libra and weighs, the weight of gained of weighing deducts the original weight of above-mentioned four parts when cleaning and obtains dust weight, again according to corresponding standard such as national standard, to examine the air regime of knowing in miner's working environment, if surpass national standard, then should take corresponding measure to make air quality up to standard.

The utility model dust sampling head in the course of the work, air can be from adjacent component runaway, can guarantee that sampling is correct; Dust-collecting box 5 can be contained and deposit the dust that weight reaches 1500mg, and it is bigger to deposit capacity; Assembly is reasonable, in light weight between all parts, volume is little.

Claims

1, a kind of dust sampling head is characterized in that comprising that a coarse grain sinks collector (8); The coarse granule separation seat (7) of one difference tool card base (74), air intake opening (73), air inlet duct (72), airflow cyclotron cavity (71), air intake opening (73) communicates with air inlet duct (72), air inlet duct (72) communicates with airflow cyclotron cavity (71) top, and the outlet (711) of airflow cyclotron cavity (71) bottom communicates with the heavy collector (8) of the coarse grain that is bolted in coarse granule separation seat (7) below; One is connected in the housing (6) in the tool shell chamber (61) on coarse granule separation seat (7) top, the centre extends one and is used for being stretched over the snorkel (63) that airflow cyclotron cavity (71) goes among the shell chamber (61), around the snorkel that is positioned at shell chamber (61) (63), be concaved with seal groove, be provided with O-ring seal (64) in the groove; The dust-collecting box (5) of one tool dust-collecting cavity (51) is contained in the shell chamber (61), and this dust-collecting box (5) is formed with the inward flange (52) of a tool air hole (521) in the central authorities of its dust-collecting cavity (51), and air hole (521) is corresponding with snorkel (63) and communicate; One filter membrane (4) and a filter screen (3), imbrication is on the step (54) of dust-collecting box (5) each other; One is used for lid puts the control of dust lid (2) that dust-collecting box (5) gets on, the narrow snorkel (22) that shortened in top, and the bottom is concaved with seal groove (21), is embedded packing washer (211) in the groove, and packing washer (211) matches with the upper edge (53) of dust-collecting box (5); One top cover (1), matched with housing (6), this top cover (1) is provided with the O-ring seal (14) that is used for constituting with described control of dust lid 2 sealing on the top of Qi Gai chamber (11), the narrow air entry (13) that shortened into of the outer center of top of top cover (1), and air entry (13) communicates with snorkel 22.

2, dust sampling head according to claim 1, it is characterized in that described coarse grain sinks and is furnished with thread (81) on the upper end inwall of collector (8), also be furnished with thread (75) in the lower end of described coarse granule separation seat (7) accordingly with it, thread (81) and thread (75) spiral shell are mutually joined.

3, dust sampling head according to claim 1 is characterized in that being furnished with card base screw (741) on the described coarse granule separation seat (7), and described card base (74) is taken it by card base screw (741) and is fixed on the coarse granule separation seat (7).

4, dust sampling head according to claim 1, the external wall of upper portion that it is characterized in that described housing (6) is provided with external thread (62), correspondingly at described top cover (1) and be positioned on the below inwall in Qi Gai chamber (11) and be provided with internal screw thread (12), external thread (62) and internal screw thread (12) spiral shell are mutually joined.

5, dust sampling head according to claim 1 is characterized in that described filter membrane (4) is nonmetal filter membrane.

6, dust sampling head according to claim 5 is characterized in that described nonmetal filter membrane is any one in sponge or felt or the gauze.

7, dust sampling head according to claim 1 is characterized in that described filter screen (3) is a metal screen.

8, dust sampling head according to claim 1, what it is characterized in that described integrated lid (2) is shaped as the bamboo hat shape.

9, dust sampling head according to claim 1, what it is characterized in that described integrated lid (2) is shaped as the bell jar shape.

10, dust sampling head according to claim 1 is characterized in that it is plastics that described coarse grain sinks the material of collector (8), coarse granule separation seat (7), housing (6), dust-collecting box (5), control of dust lid (2), top cover (1).