In prior art, the ingredient of ejector mainly includes nozzle, suction chamber, diffuser pipe.Nozzle is placed in suction chamber
In, and it being positioned at the surface of the suction inlet of suction chamber, the gas of jet pipe sprays from nozzle with higher speed so that nozzle week
The space enclosed forms negative pressure, and under the effect of inside and outside differential pressure, dust laden air constantly enters from the suction port of suction chamber, after through expanding
Pressure pipe is discharged.Such as, disclosed in Chinese patent literature CN2296401Y, a kind of caving roof coal hydraulic support coal discharge outlet negative pressure catches dirt dress
Put, including nozzle, dust shield interface, adopter, reducing pipe, trunnion and dust shield.Horizontal by injection stream water particle
Turbulent diffusion, takes away the air in adopter and forms negative pressuren zone so that dust laden air flows into adopter from dust shield,
Carry out energy exchange with the current of nozzle more finally to discharge, it is simply that utilize this principle.
Owing to being fixed with nozzle in above-mentioned negative pressure dust trapping device for coal discharge outlet of discharge top coal hydraulic support adopter, and nozzle is put
In the surface of dust shield interface, when negative pressure dust trapping device for coal discharge outlet of discharge top coal hydraulic support works, the spray in adopter
Surrounding's formation negative pressuren zone of mouth, dust laden air enters from the dust shield interface of adopter side, is thus easily hindered by nozzle
Every and make major part dust laden air be gathered in the space of nozzle lower end, thus easily form blocking, cause dust collection efficiency the highest.Contain
Dirt air is by dust shield when the dust suction interface, and dust absorption passage narrows suddenly, and dust laden air is easily blocked in suction because of the most smooth
Dirt interface.It addition, trunnion is connected with round platform reducing pipe and round platform increaser, the space of device is that suddenly big or suddenly small change is empty
Between, when carrying out dust suction work, bulky grain is just likely to occur the phenomenon of blocking channel, affects the effect of dust suction.
Summary of the invention
It is an object of the invention to, for the problems referred to above, provide a kind of to society and make the negative pressuren zone of ejector at ejector tube chamber
It is internally formed, so that the pneumatic material carrier that pan feeding space uniform is smooth.
The technical scheme is that a kind of pneumatic material carrier of offer, including shell be arranged in described shell
Ejector, described ejector is tubulose, is provided with first annular groove, described first ring on the outer surface of described ejector
Form a confined space between the inwall of connected in star and described shell, be provided with several directions one around described first annular groove
The jet orifice through tube wall caused;Being provided with air inlet on the housing, described air inlet communicates with described confined space.
As the further improvement for technique scheme, described ejector includes Part I and Part II, institute
Stating Part I to be mutually inserted with described Part II, the outer surface of one end of described Part I is provided with the first bulge loop, institute
The outer surface of the one end stating Part II is provided with the second bulge loop, is described first ring between described first bulge loop and the second bulge loop
Connected in star, described jet orifice be arranged on described Part I or/and Part II the other end outer surface on.
As the further improvement for technique scheme, also including switch, the air inlet of described shell connects air inlet
Pipe, described switch series is connected in described inlet channel.
As the further improvement for technique scheme, also including handle, described handle is fixing with described shell even
Connecing, described handle is provided with the air inlet pipe communicated with air inlet.
As the further improvement for technique scheme, also including switch, described switch includes shaft core and axle sleeve, institute
Stating axle sleeve to be movably arranged on handle, described shaft core is socketed in described axle sleeve, and the inner of shaft core extends internally out described axle sleeve
The inner, the outer end of described shaft core extends outward outside described handle;The inner of described shaft core is provided with diameter more than sleeve diameter
Prominent, be provided with the first sealing ring for sealing axle sleeve end-face hole in described prominent inner side, be close to prominent one section axle
The external diameter of core is provided with the second sealing ring less than the internal diameter of described axle sleeve, the diameter in axle sleeve equal in the shaft core of sleeve diameter;
Communicate with inner hole of shaft sleeve being provided with less than the position of a nodal axisn core of sleeve diameter relative to described shaft core diameter of described axle sleeve
Through hole;During conducting runner, the outer end of pressing shaft core, make the first sealing ring leave with sleeve end face, fluid is from end face of shaft bush
Hole enters, and then, through described air inlet, arrives in described confined space, forms jet by jet orifice;Otherwise, then close
Runner.
As the further improvement for technique scheme, described shell is provided with switch keeper, and described switch is fixed
Position part is provided with the first groove, and the outer end of the described shaft core being in outside axle sleeve is provided with press head, presses described press head by institute
When stating shaft core inward displacement, dialing up described press head can be by switch location.
As the further improvement for technique scheme, in described shaft core, the rear end of described press head is provided with multiple
Position spring.
As the further improvement for technique scheme, described pneumatic material carrier, it is characterised in that described
The escape pipe of shell is provided with material bag.
As the further improvement for technique scheme, described pneumatic material carrier, it is characterised in that described
Shell is provided with lifting hole(eyelet).
Due to the fact that have employed ejector is tubulose, the outer surface of ejector is provided with first annular groove, in cincture
The structure of the consistent jet orifice in some directions it is provided with, when gas enters by first annular recessed from air inlet in first annular groove
During what groove and outer casing inner wall were formed confined space, gas just flows into each jet orifice through the guide effect of the first projection, due to
Jet orifice is through the through hole of tube wall by groove, and therefore gas just flows out from ejector tube chamber is internal, the most just with jet side
Forming negative pressuren zone in the tube chamber of contrary ejector, under inside and outside differential pressure effect, material is just penetrated from contrary with jet direction
Enter in the tube chamber of stream device.Therefore so that the present invention has the negative pressuren zone making ejector be formed in ejector tube chamber, enters simultaneously
The advantage that material space is uniformly smooth.
Detailed description of the invention
In describing the invention, it is to be understood that " " center ", " on ", D score in term, "front", "rear", " left ",
Orientation or the position relationship of the instruction such as " right " are based on orientation shown in the drawings or position relationship, are for only for ease of and describe this
Bright and simplification describes rather than indicates or imply that the device of indication or element must have specific orientation, with specific orientation
Structure and operation, be therefore not considered as limiting the invention.Additionally, term " first ", " second " are only used for describing purpose,
And it is not intended that indicate or hint relative importance.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " is installed ", " even
Connect ", " being connected " should be interpreted broadly, connect for example, it may be fixing, it is also possible to be that dismounting connects, or be integrally connected;Permissible
It is to be mechanically connected, it is also possible to be electrical connection;Can be to be joined directly together, it is also possible to be to be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, can understand that above-mentioned term is at this with concrete condition
The concrete meaning of invention.Additionally, in describing the invention, except as otherwise noted, " multiple ", " some " be meant that two or
Two or more.
Refer to the first embodiment for a kind of pneumatic material carrier disclosed in Fig. 1 to Fig. 3, Fig. 1 to Fig. 3,
Described pneumatic material carrier includes shell 1 and the ejector 2 being arranged in described shell 1, and described ejector 2 is tubulose (ginseng
See Fig. 1, Fig. 2, Fig. 3), the outer surface of described ejector 2 is provided with first annular groove 21, described first annular groove 21
And form a confined space 3 between the inwall 11 of described shell 1, be provided with several directions one around described first annular groove 21
The jet orifice 211 through tube wall caused, is provided with the gas in guiding confined space 3 between adjacent two described jet orifices 211
First projection 212 of the current-sharing of the flow direction of body;Respectively stretch out at the two ends of described ejector 2 and be provided with external diameter and described first ring
The first ring 222 and the second ring 232 that connected in star external diameter is equal, in order to the sealing making confined space 3 is better, described first
The 3rd sealing ring 15 and the 4th sealing ring 16 respectively it is socketed with on ring 222 and the second ring 232.It is additionally provided with air inlet on the housing
12, described air inlet 12 communicates with described confined space 3, and gas, after air inlet 12 enters, just enters confined space 3, through penetrating
The jet orifice 211 horn-like outlet 17 on shell 1 again on stream device 2 is flowed out, simultaneously at the ejector contrary with jet direction
Tube chamber in formed negative pressure.
In order to control operation and the stopping of pneumatic material carrier more easily, described pneumatic material carrier also includes
Switch 4, the air inlet 12 of described shell 1 connects air inlet pipe 5, and described switch 4 is serially connected in described inlet channel, and gas is from air inlet
Through switch 4 when passage enters, switch 4 connection, then inlet channel communicates with air inlet 12, and gas is through switch 4 inflow air inlet
12 enter back into ejector 2, and otherwise, inlet channel can not communicate with air inlet 12, and gas is blocked in inlet channel.
Taking dynamic pneumatic material carrier when using for the convenience of the users, described pneumatic material carrier also includes handle 6,
Described handle 6 and 1 one-tenth of described shell are fixing to be connected, and described handle 6 is provided with the air inlet pipe 5 communicated with air inlet 12, described in enter
The mouth of pipe internal layer that trachea 5 connects with extraneous adapter 51 is provided with the first female thread 53, with the first external screw thread 52 in external world's adapter 51
Matching, by screwing up screw thread, the fixing air inlet pipe 5 that connects can play the effect preventing gas leakage with extraneous adapter 51.It addition, institute
Two surfaces up and down stating handle 6 are additionally provided with decorative pattern 61(as shown in Figure 1 and Figure 2), during user uses, on handle 6
Decorative pattern 61 can play anti-skidding effect.
Described pneumatic material carrier, also includes switching 4, being configured to (as shown in Figure 1, Figure 3) of switch, described switch 4
Including shaft core 41 and axle sleeve 42, described axle sleeve 42 is movably arranged on described handle 6, can dismounting and change, described shaft core at any time
41 are socketed in described axle sleeve 42, and moving relative to described axle sleeve 42 in described axle center 41, the inner 411 of shaft core 41 extends internally out
The inner 421 of described axle sleeve 42, the outer end 412 of described shaft core extends outward outside described handle 6;The inner of described shaft core 41
411 are provided with diameter is more than prominent the 4111 of axle sleeve 42 internal diameter, is provided with for sealing axle sleeve end face in the described inner side of prominent 4111
First sealing ring 4112 in hole 422, the external diameter of the one section of shaft core 413 being close to prominent 4111 is less than the internal diameter of described axle sleeve 42,
Diameter in axle sleeve 42 is provided with the second sealing ring 4141 equal in the shaft core 414 of axle sleeve 42 internal diameter;
In order to make the first sealing ring 4112 position, the around described prominent 4111 also can be set on described prominent 4111
Second ring groove 4113, described first sealing ring 4112 is just fixing to be stuck in described second annular groove 4113.
Setting less than the position of a nodal axisn core 413 of axle sleeve 42 internal diameter relative to described shaft core 41 diameter at described axle sleeve 42
There is the through hole communicated with axle sleeve 42 endoporus;During conducting runner, the outer end 412 of pressing shaft core, the relative axle sleeve 42 in axle center 41 moves, directly
To making the first sealing ring 4112 leave with sleeve end face 422, fluid enters from sleeve end face 422, then, enters described in process
Pore 12 arrives in described confined space 3, forms jet by jet orifice 211;Otherwise, then runner is closed.
The most in use switch 4 is positioned, described shell 1 is provided with switch keeper 7, described switch location
Being additionally provided with the first groove 71 on part, the outer end 412 of the described shaft core being in outside axle sleeve is provided with press head 4121, described pressing
It is additionally provided with plectrum 4123 on pressure head 4121, when pressing described press head 4121 by described shaft core 41 inward displacement, dials up
Described plectrum 4123 can be fixed on described first groove 71 by described plectrum 4123, can be by switch 4 location.
In described shaft core 41, the rear end of described press head 4121 is provided with back-moving spring 4122.When by described plectrum 4123
Dialling when described first groove 71, unclamp hands, described pressing pressure head 4121 is just rebounded initial position by described back-moving spring 4122,
The most described axle center 41 moves to initial position the most therewith, first sealing ring 4112 and sleeve end face under the drive in axle center 41
422 is mutually close, and runner is closed.
The escape pipe 13 of described shell 1 is provided with material bag, and material bag is for collecting the material that ejector 2 absorbs;Institute
The outer ring stating one end that escape pipe 13 is connected with shell 1 is provided with the second external screw thread 132, and one end port at described shell 1 sets
The second matched female thread 18, described escape pipe 13 is had to form one with described shell 1 by screwing up of screw thread.Immediately
The second projection 131 being provided around escape pipe 13 on described second external screw thread 132, at the outer weekly form of described second projection 131
Face is provided with some second grooves 133 identical with gas flow direction in escape pipe 13 by the most stubborn with shell 1 for escape pipe 13
During conjunction, the second groove 133 has added the frictional force between hands and escape pipe 13 so that screws up and is more prone to carry out.
The suspension of the pneumatic material carrier after using for convenience, described shell 1 is provided with lifting hole(eyelet) 14, described lifting hole(eyelet) 14
The geometric figure of a part has been hollowed out for inside.
The second embodiment (see Fig. 1, Fig. 3) can also be set to as the present invention, the second embodiment and the first
Embodiment is substantially the same, and its difference is to manufacture for convenience processing, and described ejector 2 can be made into by two
The assembly of part composition, respectively Part I 22 and Part II 23, described Part I 22 and described Part II 23
Being mutually inserted formation one, the outer surface in one end of described Part I 22 is provided with the first bulge loop 221, at described second
The outer surface dividing one end of 23 is provided with the second bulge loop 231, is described ring between described first bulge loop 221 and the second bulge loop 231
Connected in star 21, described jet orifice 211 is arranged on the outer surface of described Part I 22 other end.(similarly, described jet
Hole 211 may also be arranged on the outer surface of the described Part II other end and described jet orifice 211 can also be simultaneously the
The outer surface interval of a part 22 and Part II 23 is arranged.) it is additionally provided with air inlet 12, described air inlet on the housing
12 communicate with described confined space 3, and gas, after air inlet 12 enters, just enters confined space 3, the jet on ejector 2
Hole 211 again on shell 1 escape pipe 13 flow out, simultaneously formation negative pressure horn-like outlet 17 in.Now material web is then
Horn-like outlet 17 should be connected on.
The third embodiment (picture), the third embodiment and Fig. 1 to Fig. 3 institute can also be set to as the present invention
The embodiment shown is substantially the same, and its difference is installation direction and the second embodiment phase of described ejector 2
Instead (seeing Fig. 1, Fig. 3), the Part II 23 of the most described ejector 2 is placed in one end close with described escape pipe 13, and described
Part I 22 is disposed away from one end of escape pipe 13.It is additionally provided with air inlet 12, described air inlet 12 and institute on the housing
Stating confined space 3 to communicate, gas, after air inlet 12 enters, just enters confined space 3, and the jet orifice 211 on ejector 2 is again
Horn-like outlet 17 on shell 1 is flowed out, and forms negative pressure in the tube chamber of the ejector contrary with jet direction simultaneously.