CN206450557U

CN206450557U - Negative pressure sieve analysis instrument for cement fineness

Info

Publication number: CN206450557U
Application number: CN201720108609.XU
Authority: CN
Inventors: 傅国兴; 何立峰; 韩丽萍
Original assignee: Hangzhou Silver Jianta Concrete Co
Current assignee: Hangzhou Silver Jianta Concrete Co
Priority date: 2017-02-05
Filing date: 2017-02-05
Publication date: 2017-08-29
Anticipated expiration: 2027-02-05

Abstract

The utility model discloses a kind of negative pressure sieve analysis instrument for cement fineness, including casing, it is arranged at the sieve seat on casing, it is arranged at the testing sieve on sieve seat, the cyclone cylinder being connected with sieve seat, it is arranged at the collecting the gray bottle of cyclone cylinder bottom and is connected with cyclone cylinder and is arranged at the dust catcher in casing, air nozzle is provided with sieve seat, air nozzle is connected by the air jet system being arranged on sieve seat, and air nozzle is rotated with sieve seat by the synchronous motor being arranged on sieve seat and is connected, in air nozzle towards being provided with projection on the end face of testing sieve, the raised screen cloth with testing sieve is contradicted and is connected, the port of testing sieve is provided with end cap；Air nozzle is made to jet in testing sieve by air jet system, the projection on air nozzle is contradicted with the screen cloth on testing sieve simultaneously, air nozzle is driven to rotate by synchronous motor, projection is set to play a part of scraping the screen cloth on testing sieve, the effect stirred to the cement in testing sieve, improves the screening effect of testing sieve.

Description

Negative pressure sieve analysis instrument for cement fineness

Technical field

The utility model is related to soil fineness test apparatus field, more specifically, it relates to a kind of cement fineness negative pressure Screen analyzer.

Background technology

Negative pressure sieve analysis instrument for cement fineness is by standard GB/T 1345-91《Cement fineness method of inspection 0.08mm sieves screen analysis Instrument》Carry out screen analysis inspection instrumentation, with it is simple in construction, easy to operate, reduction energy consumption the features such as, be cement plant, building Company and the indispensable instrument in scientific research institutes and universities and colleges for possessing cement specialty；The power of screening is used as by the use of air-flow Medium, during work, whole system keeps the gas that the smart powder material to be measured in negative pressure state, screen cloth sprays in the air nozzle of rotation Lower stream effect is in stream mode, and is moved with air-flow, and wherein particle diameter is driven by air-flow less than the fine grained of mesh size and passed through Screen cloth is pumped, and if particle diameter then stays in screen cloth to reach the purpose screenings system of screening more than the coarse granule of mesh size Be combined a small cyclones in system to gather dust cylinder, then the fine grained by screen cloth can be collected from air-flow, collection rate up to 90% with On, so as to reduce dust catcher deashing number of times.

Publication No. CN205580940U Chinese patent discloses a kind of negative pressure sieve analysis instrument for cement fineness, including casing, Dust catcher, sieve seat, collecting the gray bottle and cyclone cylinder, cyclone cylinder is outside casing, and the bottom of collecting the gray bottle and cyclone cylinder is fixed, the rotation Air duct slides with casing to be connected and can be moved towards the direction close to and away from casing, is additionally provided with casing for accommodating cyclone cylinder And the storage tank of collecting the gray bottle.

By that cyclone cylinder can be pushed into storage tank, it is necessary to can be with when using screen analyzer when screen analyzer need not be used Cyclone cylinder is pulled out out of storage tank, although while meeting convenient observation collecting the gray bottle, dismounting cyclone cylinder and protection whirlwind The need for cylinder；But sieve seat in cement be gradually screened when, the soil of some beneath bulky grains is fallen on screen cloth, is caused The tiny cement in upper strata can not be screened well, so that the performance screened in sieve seat to cement is reduced, influence cement screening As a result.

Utility model content

In view of the deficienciess of the prior art, the purpose of this utility model is that provide a kind of improve sieves to cement in sieve seat Select the negative pressure sieve analysis instrument for cement fineness of performance.

To achieve the above object, the utility model provides following technical scheme：

A kind of negative pressure sieve analysis instrument for cement fineness, including casing, be arranged on casing sieve seat, be arranged at sieve seat on experiment Sieve, with sieving cyclone cylinder that seat is connected, being arranged at the collecting the gray bottle of cyclone cylinder bottom and be connected with cyclone cylinder and be arranged at case Internal dust catcher, is provided with air nozzle in the sieve seat, and the air nozzle is connected by the air jet system being arranged on sieve seat Connect, and the air nozzle is connected by the synchronous motor being arranged on sieve seat with sieve seat rotation, in the air nozzle towards testing sieve End face on be provided with projection, the raised screen cloth with the testing sieve is contradicted and is connected, and is set in the port of the testing sieve It is equipped with the end cap for closing the testing sieve.

It is arranged such, by the way that testing sieve is pressed in sieve seat, makes the screen cloth of testing sieve and air nozzle inconsistent, Zhi Houtong Cross end cap and sealed effect realized to the port of testing sieve, the other end makes air nozzle to jet in testing sieve by air jet system, The projection on air nozzle is contradicted with the screen cloth on testing sieve simultaneously, then drives air nozzle to rotate by synchronous motor, makes raised rise The effect that screen cloth on to testing sieve is scraped, while the gas that the smart powder material to be measured in screen cloth sprays in the air nozzle of rotation Lower stream effect is in fluidised form shape, and is moved with air-flow, and wherein particle diameter is driven by air-flow less than the fine grained of mesh size and passed through Screen cloth is pumped, and the coarse granule that particle diameter is more than sieve screen apertures then stays in screen cloth to reach the purpose of screening, improves testing sieve Screening effect, then the cement after screening is adsorbed by dust catcher, cement is fallen into the collecting the gray bottle in cyclone cylinder, reach To the effect of screening, and then the performance screened in sieve seat to cement is improved, improve the effect of the precision of screening.

Further set：The air nozzle bias is connected in the rotating shaft of the synchronous motor.

It is arranged such, when synchronous motor drives air nozzle to be rotated in sieve seat, makes the raised rotation at air nozzle two ends Radius it is different, testing sieve is partially in the effect of air nozzle contact, after the other end is hanging, the process rotated in air nozzle In, make the shake of the screen cloth of testing sieve one on the other, improve the effect stirred to the cement in testing sieve, improve testing sieve The interior screening to cement is acted on.

Further set：Multiple projections are uniformly arranged on the air nozzle.

It is arranged such, makes the raised uniform screen cloth to testing sieve carry out uniformly contradicting the effect scraped.

Further set：The raised height is gradually incrementally set by synchronous motor junction towards end.

It is arranged such, larger for the stress in the middle part of testing sieve, the distance sunk is bigger, by will be convex on air nozzle The height risen is gradually incrementally set, and can be improved the raised screen cloth to testing sieve and be carried out uniformly contradicting the effect scraped

Further set：Sealing ring is provided with the inwall of the sieve seat, the sealing ring is outer with the testing sieve Wall contradicts connection.

It is arranged such, by the way that testing sieve is pressed in sieve seat, the sealing for making the outer wall of testing sieve and being arranged in sieve seat Circle is inconsistent, reaches sealed effect, is easy to testing sieve to be in the effect screened in sieve seat.

Further set：Journal stirrup, the end face of the journal stirrup and the end cap are provided with the openend of the testing sieve Contradict connection.

It is arranged such, journal stirrup is contradicted with sieve seat and be connected, the contact area of testing sieve and sieve seat can be improved, testing sieve is improved With sieving the stability between seat, while by end cap bar sealing can be carried out to the port of testing sieve, it is to avoid testing sieve is in screening Dust blow out.

Further set：Sealing gasket is provided with the end cap, the sealing gasket is contradicted with the journal stirrup and is connected.

It is arranged such, sealing property when being contacted between end cap and journal stirrup can be improved by sealing gasket.

Further set：The sealing gasket includes the base wad being fixedly connected with end cap and the absorption being wholely set with base wad Pad, the absorption layer is C-shaped to be set, and the opening of absorption layer is contradicted with the journal stirrup and is connected.

It is arranged such, by pressing end cap, makes the gas compression in the absorption layer on sealing gasket, sealing gasket is adsorbed in branch On ear, the effect of the sealing property between end cap and journal stirrup is improved.

Further set：The interior bottom of the sieve seat is set in bowl-mouth shape.

It is arranged such, after tiny cement is screened out of testing sieve, by the sieve seat set in bowl-mouth shape, is easy to Cement after screening is concentrated on to the bottom of sieve seat, the effect for being easy to dust catcher to be adsorbed.

Further set：The cyclone cylinder is set in funnel-form, and the collecting the gray bottle threads turn is connected to the whirlwind The bottom of cylinder.

It is arranged such, the cement after screening is adsorbed by dust catcher, is easy to the collection for making cement fall into cyclone cylinder In grey bottle, the effect of screening is reached, by rotating collecting the gray bottle, you can the effect for disassembling collecting the gray bottle from cyclone cylinder, side Convenient to operate.

By using above-mentioned technical proposal, the utility model is compared compared with the prior art：Pass through end of the end cap to testing sieve Cause for gossip is now sealedly acted on, and the other end makes air nozzle to jet in testing sieve by air jet system, while the projection on air nozzle Contradicted with the screen cloth on testing sieve, then drive air nozzle to rotate by synchronous motor, projection is played to the screen cloth on testing sieve The effect scraped, the effect stirred to the cement in testing sieve improves the screening effect of testing sieve, then passes through dust catcher pair Cement after screening is adsorbed, and cement is fallen into the collecting the gray bottle in cyclone cylinder, reaches the effect of screening, and then improve sieve seat The interior performance screened to cement, improves the effect of the precision of screening.

Brief description of the drawings

Fig. 1 is the structural representation of negative pressure sieve analysis instrument for cement fineness；

Fig. 2 is the partial exploded view of sieve seat and testing sieve in negative pressure sieve analysis instrument for cement fineness；

Fig. 3 is the enlarged drawing at A in Fig. 2；

Fig. 4 is the sectional view at lock shaft in negative pressure sieve analysis instrument for cement fineness；

Fig. 5 is the enlarged drawing at B in Fig. 4；

Fig. 6 is the enlarged drawing at C in Fig. 5.

In figure：1st, casing；2nd, seat is sieved；3rd, testing sieve；31st, journal stirrup；32nd, positioning hole；4th, cyclone cylinder；5th, collecting the gray bottle；6th, inhale Dirt device；7th, air nozzle；8th, air jet system；9th, synchronous motor；10th, it is raised；11st, end cap；12nd, sealing ring；13rd, sealing gasket；131、 Base wad；132nd, absorption layer；14th, sliding cavity；15th, lock shaft；16th, block；17th, compression spring；18th, lever.

Embodiment

Negative pressure sieve analysis instrument for cement fineness is described further referring to figs. 1 to Fig. 6.

A kind of negative pressure sieve analysis instrument for cement fineness, as shown in Figures 1 to 5, including casing 1, be arranged on casing 1 sieve seat 2, It is slideably positioned in the testing sieve 3 sieved on seat 2, the cyclone cylinder 4 being connected with sieve seat 2, the collecting the gray bottle for being arranged at the bottom of cyclone cylinder 4 5th, the dust catcher 6 that is connected with cyclone cylinder 4 and is arranged in casing 1, the air nozzle 7 being arranged in sieve seat 2, connect with air nozzle 7 The air jet system 8 that connects, the synchronous motor 9 being connected with air nozzle 7 and it is arranged on the port of testing sieve 3 and is used to close the examination Test the end cap 11 of sieve 3；Air jet system 8 uses small-sized hair-dryer, and hair-dryer is fixedly installed on the outer face of sieve seat 2 and spray Valve 7 is connected, and is reached to blowing role in testing sieve 3.

As shown in Figures 4 to 6, wherein, be fixedly installed the journal stirrup 31 of ring-type in the openend medial surface of testing sieve 3, together When sealing gasket 13 is provided with end cap 11；Sealing gasket 13 include the base wad 131 that is fixedly connected with end cap 11 and with base wad 131 The absorption layer 132 being wholely set, absorption layer 132 is C-shaped to be set, by for press-side lid 11, making the absorption layer of sealing gasket 13 132 are adsorbed on journal stirrup 31, journal stirrup 31 is reached that sealing contradicts the effect being connected on the end face of journal stirrup 31.

As shown in Figures 4 to 6, the interior bottom of sieve seat 2 is set in bowl-mouth shape, and synchronous motor 9 is fixedly installed on outside sieve seat 2 Lower surface on, the rotating shaft of synchronous motor 9 is arranged in sieve seat 2 and bias is connected on the air nozzle 7；In air nozzle 7 towards examination Projection 10 is provided with the end face for testing sieve 3, projection 10 is contradicted with the screen cloth on testing sieve 3 and is connected, and multiple described raised 10 is uniform It is arranged on air nozzle 7, and the height of projection 10 is gradually incrementally set by the junction of synchronous motor 9 towards end；Make synchronous motor 9 Drive air nozzle 7 in sieve seat 2 during rotation, using the rotating shaft of synchronous motor 9 as separation, and on separation both sides air nozzle 7 Projection 10 follow air nozzle 7 rotate during, the rotation position of both sides projection 10 is shifted to install.

As shown in Figure 2 to Figure 3, sealing ring 12 is provided with the inwall of sieve seat 2, when testing sieve 3 is installed in sieve seat 2, Sealing ring 12 is contradicted with the outer wall of testing sieve 3 and is connected；As shown in Figure 5 and Figure 6, while being provided with positioning hole 32 on testing sieve 3, Sliding cavity 14 is provided with casing 1, sliding cavity 14 is on same straight line with positioning hole 32 and set, set in sliding cavity 14 Have for by testing sieve 3 be fixed on sieve seat 2 in lock shaft 15, lock shaft 15 run through sliding cavity 14, and locking when lock shaft 15 one end Hold and be plugged in positioning hole 32.

As shown in Figure 5 and Figure 6, block 16 is provided with lock shaft 15, while being arranged with original state on lock shaft 15 and being The compression spring 17 of compressed format, the two ends of compression spring 17 are contradicted with the inwall of block 16 and sliding cavity 14 respectively to be connected； One end of lock shaft 15 wears one end of sliding cavity 14 and the returning place force by compression spring 17 and the clamping of positioning hole 32, and realizing will examination The effect that sieve 3 is fixed in sieve seat 2 is tested, while the inwall for the returning place force and sliding cavity 14 that block 16 passes through compression spring 17 offsets Touch.

As shown in Figure 5 and Figure 6, the end protruded under the nature of lock shaft 15 in sieve seat 2 is set in triangle bulk, and Opening direction arrangement of the inclined plane of end towards sieve seat 2；Make testing sieve 3 can gradually press on sieve seat 2 in when, last lock shaft 15 lead to The returning place force of overcompression spring 17 is connected in the positioning hole 32 of testing sieve 3；Another end of lock shaft 15 is arranged in sliding cavity 14 The other end, and form operating side casing 1 is outer, be provided with operating side be easy to pull lock shaft 15 to be in it is sliding in sliding cavity 14 Dynamic lever 18.

As shown in figure 4, cyclone cylinder 4 is arranged at the outer end of casing 1, the one end of cyclone cylinder 4 is communicated by pipeline with sieving the bottom of seat 2 Connection, while the other end of cyclone cylinder 4 is set in funnel-form, and the threads turn of collecting the gray bottle 5 is connected to the bottom of cyclone cylinder 4, reaches To the effect for being easy to disassemble collecting the gray bottle 5 from cyclone cylinder 4.

Operation principle：By the way that testing sieve 3 is pressed in sieve seat 2, make the outer wall of testing sieve 3 and be arranged in sieve seat 2 Sealing ring 12 is inconsistent, reaches sealed effect；When testing sieve 3 and lock shaft 15 are inconsistent, lock shaft 15 deviates from the side of testing sieve 3 Slided in sliding cavity 14, compression spring 17 is compressed, when the bottom screen cloth of testing sieve 3 is inconsistent with air nozzle 7, now The return of compression spring 17 on lock shaft 15, the power that lock shaft 15 is acted on block 16 by return spring makes lock shaft 15 towards testing sieve 3 directions are moved, and are made in the positioning hole 32 that lock shaft 15 is plugged on testing sieve 3, reach the work locking onto testing sieve 3 in sieve seat 2 With；When needing to take out testing sieve 3, by pulling lock shaft 15, the end of lock shaft 15 is set to depart from positioning hole 32, then by testing sieve 3 take out；Sealed effect is realized to the port of testing sieve 3 by end cap 11 afterwards, the other end makes spray by air jet system 8 Valve 7 while the projection 10 on air nozzle 7 is contradicted with the screen cloth on testing sieve 3, then passes through synchronous electricity to jet in testing sieve 3 Machine 9 drives air nozzle 7 to rotate, and makes projection 10 play a part of scraping the screen cloth on testing sieve 3, to the cement in testing sieve 3 The effect stirred, improves the screening effect of testing sieve 3, then is adsorbed by the cement after 6 pairs of screenings of dust catcher, makes water Mud is fallen into the collecting the gray bottle 5 in cyclone cylinder 4, reaches the effect of screening, and then improves the performance screened in sieve seat 2 to cement, is carried The effect of the precision of height screening.

Described above is only preferred embodiment of the present utility model, and protection domain of the present utility model is not limited merely to Above-described embodiment, all technical schemes belonged under the utility model thinking belong to protection domain of the present utility model.It should refer to Go out, for those skilled in the art, some improvement under the premise of the utility model principle is not departed from and Retouching, these improvements and modifications also should be regarded as protection domain of the present utility model.

Claims

1. a kind of negative pressure sieve analysis instrument for cement fineness, including casing（1）, be arranged at casing（1）On sieve seat（2）, be arranged at sieve seat （2）On testing sieve（3）And sieve seat（2）The cyclone cylinder being connected（4）, be arranged at cyclone cylinder（4）The collecting the gray bottle of bottom（5） And and cyclone cylinder（4）Connect and be arranged at casing（1）Interior dust catcher（6）, it is characterised in that：In the sieve seat（2）Inside set It is equipped with air nozzle（7）, the air nozzle（7）By being arranged at sieve seat（2）On air jet system（8）Connection, and the air nozzle （7）By being arranged at sieve seat（2）On synchronous motor（9）With sieve seat（2）Connection is rotated, in the air nozzle（7）Towards testing sieve （3）End face on be provided with projection（10）, the projection（10）With the testing sieve（3）On screen cloth contradict connection, described Testing sieve（3）Port be provided with for closing the testing sieve（3）End cap（11）.

2. negative pressure sieve analysis instrument for cement fineness according to claim 1, it is characterised in that：The air nozzle（7）Bias connection In the synchronous motor（9）Rotating shaft on.

3. negative pressure sieve analysis instrument for cement fineness according to claim 2, it is characterised in that：Multiple projections（10）Uniformly set It is placed in the air nozzle（7）On.

4. negative pressure sieve analysis instrument for cement fineness according to claim 3, it is characterised in that：The projection（10）Height by same Walk motor（9）Junction is gradually incrementally set towards end.

5. negative pressure sieve analysis instrument for cement fineness according to claim 1, it is characterised in that：In the sieve seat（2）Inwall on It is provided with sealing ring（12）, the sealing ring（12）With the testing sieve（3）Outer wall contradict connection.

6. negative pressure sieve analysis instrument for cement fineness according to claim 1, it is characterised in that：In the testing sieve（3）Opening End is provided with journal stirrup（31）, the journal stirrup（31）End face and the end cap（11）Contradict connection.

7. negative pressure sieve analysis instrument for cement fineness according to claim 6, it is characterised in that：In the end cap（11）On be provided with Sealing gasket（13）, the sealing gasket（13）With the journal stirrup（31）Contradict connection.

8. negative pressure sieve analysis instrument for cement fineness according to claim 7, it is characterised in that：The sealing gasket（13）Including with end Lid（11）The base wad being fixedly connected（131）And and base wad（131）The absorption layer being wholely set（132）, the absorption layer（132） It is C-shaped to set, and absorption layer（132）Opening and the journal stirrup（31）Contradict connection.

9. negative pressure sieve analysis instrument for cement fineness according to claim 1, it is characterised in that：The sieve seat（2）Interior bottom be in Bowl-mouth shape is set.

10. negative pressure sieve analysis instrument for cement fineness according to claim 1, it is characterised in that：The cyclone cylinder（4）In funnel-form Set, and the collecting the gray bottle（5）Threads turn is connected to the cyclone cylinder（4）Bottom.