CN206321539U - Negative pressure sieve analysis instrument for cement fineness - Google Patents

Abstract

The utility model discloses a kind of negative pressure sieve analysis instrument for cement fineness, including screen analyzer body, include the sieve seat with inner chamber on the screen analyzer body, the sieve seat bottom is provided with the suction pipe connected with inner chamber, it is provided with the sieve seat installed in inner chamber upper end and the testing sieve with sieve screen apertures, the jet component below testing sieve is provided with the inner chamber, it is characterised in that：The interior cavity wall is provided with the dredging plate lifted in inner chamber, the dredging plate upper surface is provided with the prong portion relative with sieve screen apertures, the actuator that driving prong portion is penetrated in sieve screen apertures is provided with the sieve seat, prong portion passes through sieve screen apertures, so as to play a part of dredging to sieve screen apertures, testing sieve after dredging normally can pass through for the small finished ground cement of particle, ensure that testing sieve has preferable screening effect, testing sieve after dredging, the powder particle for being available for more particles small in unit interval passes through, so as to improve the screening efficiency of screen analyzer.

Description

Negative pressure sieve analysis instrument for cement fineness

Technical field

The utility model is related to cement granules technical field of measurement and test, more particularly to a kind of negative pressure sieve analysis instrument for cement fineness.

Background technology

Negative pressure sieve analysis instrument for cement fineness, is widely used in cement fineness and examines and manufacture of cement control, other industry powder Fineness test can also be used, and its principle is the dynamic medium by the use of air-flow as screening, during work, and whole system keeps negative pressure shape Smart powder material to be measured in state, screen cloth is under the airflow function that the air nozzle of rotation sprays in stream mode and with air-flow The fine grained that motion, wherein particle are less than mesh size is pumped by air-flow drive by screen cloth, and particle diameter is more than mesh size Coarse granule then stay in so as to reach the purpose of screening in screen cloth, general negative pressure sieve analysis instrument for cement fineness is main by screen analyzer and work Industry dust catcher two large divisions group is integral, and pressure vacuum gauge can survey negative pressure, and the cylinder that gathers dust is used for collecting dust；Existing cement is thin Negative pressure screen analyzer is spent, tends to suct filter bag and burn out motor during work, filter bag need to be manually removed during ash disposal, is cleaned Ash disposal, not only workload is big, and pollution environment.

In order to solve the above problems, in the Chinese patent document that number of patent application is " 201520891337.6 ", Describe a kind of modified negative pressure sieve analysis instrument for cement fineness, including testing sieve, sieve seat, air nozzle, suction pipe, support, micro machine, rotation Air duct and filter, filter include casing and the motor, filter bag and the ash bucket that are arranged in casing, in motor and filtering Terminal pad is provided between bag, terminal pad is provided with one or more connecting holes, and filter bag is arranged at the lower section of connecting hole, in ash Vibrating grid is provided between bucket and filter bag, vibrating grid is driven by oscillation drive, and is connected with filter bag, vibrating grid can Effectively to play restriction effect to filter bag, prevent from sucting filter bag when motor from working, and burn out the generation of motor phenomenon, protect The work safety of motor is demonstrate,proved.

But, above-mentioned this negative pressure sieve analysis instrument for cement fineness is disadvantageous in that, due to the diameter of cement granules Difference, suction pipe is taken away the small cement granules of particle by sieve screen apertures, during taking away, and the big cement granules of particle also can be by Suction pipe, which is inhaled, is fitted in screen surface, after screen cloth uses a period of time, and the big cement granules of particle can sieve the part on screen cloth Mesh is blocked, and causes the screening effect of screen cloth to weaken significantly, influences the screening efficiency of negative pressure sieve analysis instrument for cement fineness.

Utility model content

In view of the shortcomings of the prior art, the purpose of this utility model is to provide a kind of cement fineness negative pressure screen analysis Instrument, by the way of dredging testing sieve.There is preferable patency when having ensured testing sieve screening, so as to improve screen analyzer Screening efficiency.

Above-mentioned technical purpose of the present utility model technical scheme is that：A kind of cement fineness negative pressure Include the sieve seat with inner chamber on screen analyzer, including screen analyzer body, the screen analyzer body, the sieve seat bottom be provided with It is provided with the suction pipe connected in inner chamber, the sieve seat installed in inner chamber upper end and the testing sieve with sieve screen apertures, the inner chamber The jet component below testing sieve is inside provided with, the interior cavity wall is provided with the dredging plate lifted in inner chamber, described Dredging plate upper surface, which is provided with to be provided with the prong portion relative with sieve screen apertures, the sieve seat, drives prong portion to penetrate in sieve screen apertures Actuator.

Pass through above-mentioned technical proposal, jet component jet into testing sieve, so that the powder particle stream in motoring ring test sieve Dynamic, suction pipe siphons away the less finished ground cement of testing sieve endoparticle by sieve screen apertures, and the larger finished ground cement of particle stays in experiment In sieve, after a period of time, the screen cloth hole plug on testing sieve, actuator driving dredging plate is moved up and down, so as to drive point Pin portion is penetrated in sieve screen apertures, and dredging plate is moved up and down, and prong portion is passed in and out sieve screen apertures, the work of dredging is played in prong portion to sieve screen apertures With, the testing sieve after dredging normally can pass through for the small finished ground cement of particle, ensure that testing sieve has preferable screening effect, Testing sieve after dredging, the powder particle for being available for more particles small in the unit interval passes through, so as to improve the screening of screen analyzer Efficiency.

It is preferred that, the inner chamber inner wall depression is formed with the slippage slot extended along in sieve seat short transverse, the dredging plate Lateral surface slide the guide pad that is connected integrally formed with slippage slot.

By above-mentioned technical proposal, plate lifting moving is dredged, corresponding, guide pad slides up and down in slippage slot, is oriented to Block plays guide effect to the sliding for dredging plate, the elevating movement of dredging plate is more stablized, precisely.

It is preferred that, it is provided through dredging on the dredging plate being communicated with the through hole of plate upper and lower surface, the suction pipe Flexible pipe portion, the upper end of the flexible pipe portion is fixedly connected through through hole and with dredging plate from bottom to top.

By above-mentioned technical proposal, the flexible pipe portion of suction pipe connection, flexible pipe portion extend into the upper of dredging plate by through hole Particle powder in surface, the direct alignment test sieve of convenient pipette is aspirated, and is more facilitated, directly, meanwhile, above and below dredging plate Mobile, can drive stretched above and below flexible pipe portion, keep the height of suction pipe not change, and the installation of suction pipe is placed stable, telescoping tube The upper end in portion is close to the lower surface of testing sieve, and the suction effect that can reach suction pipe is more preferable.

It is preferred that, the jet component includes the air nozzle towards testing sieve bottom and the jet of driving air nozzle jet Machine, the jet plane is fixedly connected with sieve seat.

By above-mentioned technical proposal, jet plane work drives air nozzle jet into testing sieve, so that in testing sieve Powder particle can flow in the case where the air-flow that air nozzle sprays drives in testing sieve, the little particle in convenient pipette suction flowing Powder, makes screening effect more preferably.

It is preferred that, the mouthpiece of the air nozzle is shaped as the prolate shape along the radially extending formation of testing sieve.

By above-mentioned technical proposal, mouthpiece is shaped as prolate shape, because mouthpiece is more flat, reaches the air-flow at mouthpiece and is pressed Contracting, so that the air pressure of air-flow is higher, faster, motoring ring test sieve endoparticle flows more suitable the flow velocity of air-flow after ejection Freely, and mouthpiece is radially extending along testing sieve, the air-flow of ejection is in strip, radially blows powder particle in testing sieve, makes The mobility of powder particle is more preferably.

It is preferred that, it is being provided through dredging plate upper and lower surface on the dredging plate and pass through from bottom to top for jet component Air vent.

By above-mentioned technical proposal, jet component can be from bottom to top through dredging plate, and jet component can directly spray to dredging The bottom surface of plate, makes jet keep direct, efficient effect, is not influenceed by dredging plate lifting.

It is preferred that, the sealing ring for being surrounded on inner chamber upper end-face edge, the sealing ring are fixedly connected with the interior cavity wall Inner peripheral surface and the outer circumference surface of testing sieve be brought into close contact.

By above-mentioned technical proposal, the gap between sealing ring sealing inner chamber and testing sieve makes to form sealing in inner chamber Space, the air-flow for being easy to jet component to spray can preferably flow in inner chamber, will not spread everywhere, meanwhile, make suction pipe upward The effect of suction is more powerful, efficient.

It is preferred that, the inner peripheral surface of the sealing ring is provided with the positioning convex for protruding from inner peripheral surface, the testing sieve Outer circumference surface depression be formed with and positioning convex male-female engagement detent.

By above-mentioned technical proposal, positioning convex and detent male-female engagement, so that by including testing sieve location and installation On chamber, testing sieve is set to install more precisely, stably.

It is preferred that, the screen cover being sealed on testing sieve is provided with the testing sieve, the screen cover engages solid with testing sieve It is fixed.

By above-mentioned technical proposal, screen cover is fixed in testing sieve, and screen cover plays preferably capping to testing sieve and made With, it is to avoid it is scattered out of testing sieve when powder particle flows to come out, facilitate screen cover to open or cover examination by the way of engaging Test sieve.

It is preferred that, the rubber spacer being layered on screen cover lower surface is fixedly connected with the screen cover.

By above-mentioned technical proposal, rubber spacer is located at the lower surface of screen cover, when powder particle flows in testing sieve, Grain can get to the lower surface of screen cover under air-flow drive, so as to produce larger noise, therefore, set rubber spacer, make particle Beat on rubber spacer, the flexible power of rubber spacer, the active force that available buffer particle is beaten on rubber spacer, so as to reduce The noise that grain is produced because hitting screen cover, rubber spacer plays a part of reducing noise.

In summary, the utility model has the advantages that：

1st, dredging is played a part of in prong portion to sieve screen apertures, and the testing sieve after dredging can be normally for the small finished ground cement of particle Pass through, ensured that testing sieve has preferable screening effect, the testing sieve after dredging is available for more particles small in the unit interval Powder particle passes through, so as to improve the screening efficiency of screen analyzer；

2nd, dredging plate is moved up and down, and can drive stretched above and below flexible pipe portion, is kept the height of suction pipe not change, is made suction pipe Install and place stable, the upper end of pipe portion of stretching is close to the lower surface of testing sieve, and the suction effect that can reach suction pipe is more preferable；

3rd, the active force that rubber spacer available buffer particle is beaten on rubber spacer, is produced so as to reduce particle because hitting screen cover Raw noise, rubber spacer plays a part of reducing noise.

Brief description of the drawings

Fig. 1 is the diagrammatic cross-section of embodiment 1, for embodying screen analyzer body interior structure；

Fig. 2 is A portions enlarged diagram in Fig. 1, the structure for embodying prong portion and air nozzle；

Fig. 3 is the diagrammatic cross-section of embodiment 2, for embodying jet component.

Reference：1st, screen analyzer body；2nd, seat is sieved；3rd, inner chamber；4th, testing sieve；5th, sieve screen apertures；6th, clamping is raised；7th, block Connect groove；8th, screen cover；9th, air vent；10th, prong portion；11st, plate is dredged；12nd, flexible pipe portion；13rd, suction pipe；14th, jet component； 1401st, air nozzle；1402nd, jet plane；15th, actuator；16th, slippage slot；17th, sealing ring；18th, rubber spacer；19th, convex Rise；20th, detent；21st, through hole；22nd, air jet pipe；23rd, jet motor；24th, guide pad.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

This specific embodiment is only to explain of the present utility model, and it is not to limitation of the present utility model, ability Field technique personnel can make the modification without creative contribution to the present embodiment as needed after this specification is read, but As long as all being protected in right of the present utility model by Patent Law.

Embodiment 1：A kind of negative pressure sieve analysis instrument for cement fineness, as depicted in figs. 1 and 2, including screen analyzer body 1, screen analyzer Body 1 includes the sieve seat 2 with inner chamber 3, and inner chamber 3 is recessed and formed straight down by the upper surface of sieve seat 2, is provided with sieve seat 2 Installed in the upper end of inner chamber 3 and the testing sieve 4 with sieve screen apertures 5, sieve screen apertures 5 are opened on the inner bottom surface of testing sieve 4, and sieve screen apertures 5 are only Pass through for the less finished ground cement of particle, the screen cover 8 being sealed on testing sieve 4, the shape of testing sieve 4 are provided with testing sieve 4 For circle, the shape of screen cover 8 is also circle, and the lower surface edge of screen cover 8 is provided with clamping projection 6, the outer circumferential sides of testing sieve 4 Face depression is formed with the clamping groove 7 being engaged by clamping with clamping projection 6, and screen cover 8 is fixed using the mode that connects and fixes On testing sieve 4；The rubber spacer 18 being layered on the lower surface of screen cover 8 is fixedly connected with screen cover 8, rubber spacer 18 is by rubber sheet gasket The lower surface of screen cover 8 is layered on, and rubber spacer 18 is fixed in screen cover 8 by the way of gluing fixation, rubber spacer 18 With preferable elastic force；

The sealing ring 17 for being surrounded on the upper end-face edge of inner chamber 3 is fixedly connected with the inwall of inner chamber 3, sealing ring 17 is by elastomeric material Be made, the lateral surface of sealing ring 17 and the inwall glue of inner chamber 3 admittedly together with, inner peripheral surface and the testing sieve 4 of sealing ring 17 Outer circumference surface be brought into close contact, by testing sieve 4 be arranged on inner chamber 3 upper end, the leakage test of sealing ring 17 sieve 4 and inner chamber 3 between Gap；The inner peripheral surface of sealing ring 17 is provided with the positioning convex 19 that level protrudes from the inner peripheral surface of sealing ring 17, convex Play 19 to be made up of elastic rubber material, the outer circumference surface depression of testing sieve 4 is formed with the positioning with the male-female engagement of positioning convex 19 Groove 20, after testing sieve 4 is installed on inner chamber 3, positioning convex 19 is entered in detent 20 and both male-female engagements.

As depicted in figs. 1 and 2, the inwall of inner chamber 3 is provided with the dredging plate 11 of the oscilaltion in inner chamber 3, dredges plate 11 Horizontal, dredging plate 11 upper surface is provided with the prong portion 10 relative with sieve screen apertures 5, and prong portion 10 is by arranged distribution in dredging Prong on the upper surface of plate 11 is constituted, and the madial wall depression of inner chamber 3 is formed with the slippage slot extended along in the sieve short transverse of seat 2 16, the lateral surface of plate 11 is dredged integrally formed with the guide pad 24 for protruding from the dredging lateral surface of plate 11, guide pad 24 and slippage slot 16 sliding connections, in the present embodiment, the quantity of guide pad 24 is two, respectively positioned at the left and right sides of dredging plate 11, relatively The quantity for the slippage slot 16 answered also is to be provided with actuator 15 inside two, the lower end of slippage slot 16, and actuator 15 selects driving gas Cylinder, drive cylinder is fixed in slippage slot 16, and the piston rod of drive cylinder can stretch up and down vertically, piston rod and guide pad 24 Lower surface is fixedly connected, and drive cylinder work, driving guide pad 24 slides up and down in slippage slot 16, so as to drive dredging plate 11 Slide up and down in the inner chamber 3, in upward slipping, prong is penetrated into sieve screen apertures 5, prong is by the cement in sieve screen apertures 5 Grain ejection is arrived outside sieve screen apertures 5, and prong plays a part of dredging to the sieve screen apertures 5 of blocking.

As shown in figure 1, being provided through dredging the through hole 21 of the upper and lower surface of plate 11, the shape of through hole 21 on dredging plate 11 Shape is circle, and sieve seat 2 bottom is provided with the suction pipe 13 connected with the inside of inner chamber 3, and suction pipe 13 selects the flexible pipe being made up of flexible plastic, The upper end fixed cover of suction pipe 13 is provided with flexible pipe portion 12, and flexible pipe portion 12 is connected with suction pipe 13, in the present embodiment, telescoping tube Portion 12 is the two telescopic telescoping tubes of section, and the upper end of pipe portion 12 of stretching passes through through hole 21 and fixed with dredging plate 11 from bottom to top to be connected Connect, the upper end of flexible pipe portion 12 protrudes from the upper surface of dredging plate 11, and flexible pipe portion 12 is fixed on dredging by the way of being glued On the through hole 21 of plate 11, with the oscilaltion of dredging plate 11, can drive stretched above and below the upper section telescoping tube of flexible pipe portion 12 Contracting movement；

The jet component 14 immediately below testing sieve 4 is provided with inner chamber 3, in the present embodiment, jet component 14 is wrapped Include towards the bottom of testing sieve 4 air nozzle 1401 and drive the jet of air nozzle 1401 jet plane 1402, jet plane 1402 with Sieve seat 2 outer surface is fixedly connected, and the mouthpiece of air nozzle 1401 is upward and mouthpiece is shaped as along the radially extending formation of testing sieve 4 Prolate shape, the mouthpiece width of air nozzle 1401 becomes narrow gradually from top to bottom, and it is vertical through dredging plate 11 to be provided with dredging plate 11 The air vent 9 of upper and lower surface, air vent 9 is shaped as rectangle, and the mouthpiece of air nozzle 1401 can pass through air vent from bottom to top 9, the width of air vent 9 is more than the width of the mouthpiece of air nozzle 1401, and jet plane 1402 works, and air nozzle 1401 is into testing sieve 4 Jet, makes the finished ground cement particle flow in testing sieve 4.

The operation principle of the present embodiment is as follows：Testing sieve 4 is arranged on inner chamber 3, finished ground cement particle is poured into experiment In sieve 4, by the snap-on caps of screen cover 8 on testing sieve 4, jet plane 1402 drives air nozzle 1401 towards jet, cement in testing sieve 4 Powder particle is moved with air-flow in testing sieve 4, and wherein particle is driven logical less than the little particle in the aperture of sieve screen apertures 5 by air-flow Suction pipe 13 is crossed to be pumped, and the coarse granule that particle diameter is more than the footpath of sieve screen apertures 5 is then stayed in testing sieve 4, so as to reach the purpose of screening； In the case that sieve screen apertures 5 on testing sieve 4 are blocked, drive cylinder work, driving guide pad 24 rises in slippage slot 16, band Prong portion 10 on dynamic dredging plate 11 is penetrated into sieve screen apertures 5, and the sieve screen apertures 5 to blocking are dredged, so that little particle powder Last particle can be siphoned away by sieve screen apertures 5 by suction pipe 13.

Embodiment 2：A kind of negative pressure sieve analysis instrument for cement fineness, difference from Example 1 is, as shown in figure 3, jet group Part 14 includes four air jet pipes 22 and driving jet motor 23 of the air jet pipe 22 to the jet of testing sieve 4, and jet motor 23 belongs to Prior art, therefore, does not elaborate herein, and four air jet pipes 22 are located at before and after inner chamber 3 on left back four direction respectively, and The mouth of pipe of air jet pipe 22 is straight up towards the bottom of testing sieve 4, and the setting of four air jet pipes 22 makes each angle in testing sieve 4 The powder particle fallen can be blown by air-flow and flow in the testing sieve 4, mobility of the powder particle in testing sieve 4 more preferably, So that screening efficiency of the present utility model is more preferable.

Claims (10)

1. include on a kind of negative pressure sieve analysis instrument for cement fineness, including screen analyzer body (1), the screen analyzer body (1) with interior The sieve seat (2) of chamber (3), described sieve seat (2) bottom is provided with the suction pipe (13) with being connected in inner chamber (3), the sieve seat (2) and set It is equipped with installed in inner chamber (3) upper end and the testing sieve (4) with sieve screen apertures (5), is provided with the inner chamber (3) positioned at testing sieve (4) the jet component (14) below, it is characterised in that：Inner chamber (3) inwall is provided with the dredging plate of the lifting in inner chamber (3) (11), described dredging plate (11) upper surface is provided with the prong portion (10) relative with sieve screen apertures (5), the sieve seat (2) and set There is the actuator (15) that driving prong portion (10) is penetrated in sieve screen apertures (5).

2. negative pressure sieve analysis instrument for cement fineness according to claim 1, it is characterised in that：Inner chamber (3) the inner wall depression shape Into there is the slippage slot (16) that extends along in sieve seat (2) short transverse, the lateral surface of the dredging plate (11) integrally formed with cunning Move the guide pad (24) of groove (16) sliding connection.

3. negative pressure sieve analysis instrument for cement fineness according to claim 1, it is characterised in that：It is provided with the dredging plate (11) Through the through hole (21) of dredging plate (11) upper and lower surface, flexible pipe portion (12) is communicated with the suction pipe (13), it is described flexible The upper end of pipe portion (12) is fixedly connected through through hole (21) and with dredging plate (11) from bottom to top.

4. negative pressure sieve analysis instrument for cement fineness according to claim 1, it is characterised in that：The jet component (14) includes court To the air nozzle (1401) and the jet plane (1402) of driving air nozzle (1401) jet of testing sieve (4) bottom, the jet Machine (1402) is fixedly connected with sieve seat (2).

5. negative pressure sieve analysis instrument for cement fineness according to claim 4, it is characterised in that：The mouthpiece of the air nozzle (1401) It is shaped as the prolate shape along testing sieve (4) radially extending formation.

6. negative pressure sieve analysis instrument for cement fineness according to claim 5, it is characterised in that：It is provided with the dredging plate (11) Through air vent (9) that is dredging plate (11) upper and lower surface and supplying jet component (14) to pass through from bottom to top.

7. negative pressure sieve analysis instrument for cement fineness according to claim 1, it is characterised in that：It is fixed on inner chamber (3) inwall It is connected with the sealing ring (17) for being surrounded on inner chamber (3) upper end-face edge, inner peripheral surface and the testing sieve (4) of the sealing ring (17) Outer circumference surface is brought into close contact.

8. negative pressure sieve analysis instrument for cement fineness according to claim 7, it is characterised in that：The inner periphery of the sealing ring (17) Face is provided with the positioning convex (19) for protruding from inner peripheral surface, and the outer circumference surface depression of the testing sieve (4) is formed with and positioned Raised (19) male-female engagement detent (20).

9. negative pressure sieve analysis instrument for cement fineness according to claim 1, it is characterised in that：It is provided with the testing sieve (4) The screen cover (8) on testing sieve (4) is sealed on, the screen cover (8) is fixed with testing sieve (4).

10. negative pressure sieve analysis instrument for cement fineness according to claim 9, it is characterised in that：It is fixedly connected on the screen cover (8) There is the rubber spacer (18) being layered on screen cover (8) lower surface.