CN212622081U

CN212622081U - Cement fineness negative pressure screen analysis appearance

Info

Publication number: CN212622081U
Application number: CN202021290069.XU
Authority: CN
Inventors: 张强
Original assignee: Shaanxi Xinyida Building Materials Industry Development Co ltd
Current assignee: Shaanxi Xinyida Building Materials Industry Development Co ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-02-26
Anticipated expiration: 2030-06-30

Abstract

The application relates to a cement fineness negative pressure sieve analysis appearance relates to concrete test equipment technical field, aims at solving in the correlation technique part sample powder in the test sieve can the adhesion cover at the sieve under air nozzle spun air current drives, influences the defect of experiment precision. It includes the screen analysis case, is provided with the sieve seat on the screen analysis case, is provided with the negative pressure sieve on the sieve seat, is provided with the sifter lid on the negative pressure sieve, is provided with the stand on the screen analysis case, is provided with the fixed disk on the stand, is provided with the piece of strikeing on the fixed disk, strikes the piece including running through the hammer stem that the fixed disk set up with set up in the tup that the hammer stem is close to sifter lid one end, and when tup and sifter lid butt, hammer stem keeps away from tup one end and is. The application has the effect of reducing experimental errors caused by part of the sample powder adhering to the screen cover.

Description

Cement fineness negative pressure screen analysis appearance

Technical Field

The application relates to the technical field of concrete detection equipment, in particular to a negative-pressure cement fineness screen analyzer.

Background

The negative pressure screen analyzer can be used for measuring the fineness of portland cement, common cement, slag cement, live volcanic cement, fly ash cement and other cement, and is a necessary instrument for cement factories, construction companies and colleges.

Chinese utility model patent with publication number CN206321539U discloses: the utility model provides a cement fineness negative pressure screen analysis appearance, includes the screen analysis appearance body, including the sieve tray that has the inner chamber on the screen analysis appearance body, sieve tray bottom is provided with the straw with the inner chamber intercommunication, be provided with the test sieve of installing in the inner chamber upper end and having the screen hole on the sieve tray, the closing cap has the screen cover on the test sieve, the screen cover is fixed with the test sieve block, the intracavity is provided with the jet-propelled subassembly that is located the test sieve below, intracavity wall is provided with the mediation board that goes up and down including, mediation board upper surface is provided with the sharp needle portion relative with the screen hole, be provided with the driving piece that the sharp needle portion of drive penetrated in the screen hole on the sieve tray.

During the use, install the test sieve on the sieve seat, pour cement powder granule into in the test sieve, with the screen cover block lid on the test sieve, jet-propelled in the jet-propelled nozzle orientation test sieve of air jet to the powder granule in the drive test sieve flows, and the straw is less cement powder of granule in with the test sieve is siphoned away through the screen hole, and the great cement powder of granule is stayed in the test sieve. After using a period, the screen hole on the test sieve blocks up, and driving piece drive mediation board reciprocates to drive sharp needle portion and penetrate in the screen hole, the mediation board reciprocates, makes sharp needle portion business turn over screen hole, and sharp needle portion dredges the screen cloth, makes the tiny particle powder can be siphoned away by the straw through the screen hole.

In view of the above-mentioned related art, the inventor believes that there is a defect that part of the sample powder in the test sieve is adhered to the sieve cover under the driving of the air flow ejected by the air nozzle, which affects the precision of the experiment.

SUMMERY OF THE UTILITY MODEL

In order to reduce the experimental error that part sample powder adhesion caused on the sieve lid, this application provides a cement fineness negative pressure sieve analysis appearance.

The application provides a cement fineness negative pressure sieve analysis appearance adopts following technical scheme:

the utility model provides a cement fineness negative pressure screen analysis appearance, includes the screen analysis case, be provided with the sifter seat on the screen analysis case, be provided with the negative pressure sieve on the sifter seat, be provided with the sifter lid on the negative pressure sieve, be provided with the stand on the screen analysis case, be provided with the fixed disk on the stand, be provided with on the fixed disk and strike the piece, strike the piece including running through the hammer stem that the fixed disk set up with set up in the hammer head that the hammer stem is close to sifter lid one end, just during hammer head and sifter lid butt, hammer stem keeps away from hammer head one end and is located the fixed disk top.

By adopting the technical scheme, during detection, force is applied to the hammer rod to lift the hammer rod, the hammer rod drives the hammer head to lift, the hammer head is separated from the screen cover, the screen cover and the negative pressure screen are taken down, weighed powder particles to be detected are poured into the negative pressure screen, the negative pressure screen is installed on the screen seat, the screen cover is covered, the screen analysis box is adjusted to be started, the air nozzle in the screen analysis box sprays air to the negative pressure screen, the powder particles in the negative pressure screen flow under the driving of air flow, part of the powder particles are adhered to the screen cover, the force application to the hammer rod is stopped, the hammer rod and the hammer head fall under the action of gravity and collide with the screen cover, the screen cover vibrates, the powder particles adhered to the screen cover are vibrated from the screen cover, and the process of lifting and releasing a knocking piece is repeated until the screening is completed; the piece that strikes of design through strikeing the sieve lid, shakes the powder granule of adhesion on the sieve lid from the sieve lid, reduces the experimental error that sample powder adhesion leads to on the sieve lid, promotes the experiment precision.

Preferably, one end, far away from the hammer head, of the hammer rod is provided with a limiting boss.

Through adopting above-mentioned technical scheme, the spacing boss of design carries on spacingly to the knocker, prevents that the knocker from falling into the screen analysis case among the negative pressure sieve dismouting process, and the screen analysis appearance of being convenient for uses.

Preferably, it is connected with the bull stick to rotate on the fixed disk, the axis of bull stick pivot with the fixed disk axis is parallel, be provided with the drive in the bull stick pivot the bull stick pivoted driving piece, the bull stick is kept away from bull stick pivot one end and is provided with the lug, the movement track of lug with spacing boss is at the ascending projection coincidence of vertical side, during tup and sieve lid butt, spacing boss is less than with the interval of fixed disk the height of lug, just the lug is the inclined plane of cambered surface or to keeping away from spacing boss orientation slope with the face of spacing boss butt.

By adopting the technical scheme, after the screen analysis box is started, the driving piece is adjusted to work, the driving piece drives the rotating rod to rotate, the lug rotates along with the rotating rod, the lug is in contact with the limiting boss in the rotating process and drives the limiting boss to rise, the limiting boss drives the knocking piece to rise, so that the hammer head is separated from the screen cover, after the lug is separated from the limiting boss, the limiting boss and the knocking piece fall under the action of gravity, the hammer head impacts on the screen cover, so that the screen cover vibrates, and powder particles adhered to the screen cover are vibrated away from the screen cover; the bull stick and the lug of design, with spacing boss cooperation, rotate the in-process at the bull stick, drive and strike a intermittent type lift, strike the sieve lid repeatedly, reduce the possibility of sample powder adhesion on the sieve lid, and then reduce the experimental error that the sample powder adhesion leads to on the sieve lid, promote the experiment precision.

Preferably, the knocking parts are provided with at least two groups and all the knocking parts are arranged along the circumferential direction of the fixed disc at intervals, and the axis of the rotating rod rotating shaft coincides with the axis of the fixed disc.

Through adopting above-mentioned technical scheme for only a set of piece that strikes beats the screen lid at the same time, and all the other pieces that strike exert pressure to the screen lid through gravity, fix the screen lid, reduce the possibility that the piece that strikes in-process screen lid and negative pressure sieve separation, and then reduce and strike the screen lid and cause the possibility of influence to the negative pressure environment in the screen analysis case, ensure that the experiment normally goes on.

Preferably, a spring is arranged between the hammer head and the fixed disc, and when the hammer head is abutted against the screen cover, the spring is in a compression state.

Through adopting above-mentioned technical scheme, the spring of design strengthens the dynamics of knocking when the piece strikes the sieve lid through the restoring force of spring, reduces the possibility of sample powder adhesion on the sieve lid, and then reduces the experimental error that sample powder adhesion leads to on the sieve lid, further promotes the experiment precision.

Preferably, the hammer head is a rubber hammer.

Through adopting above-mentioned technical scheme, the rubber hammer of design strikes the sieve lid in-process at the tup and cushions, avoids tup and sieve lid to take place the rigidity collision, protects the sieve lid.

Preferably, the upright is rotatably connected with the screen box.

By adopting the technical scheme, when the negative pressure sieve is taken down from the sieve base, the upright posts are rotated, the upright posts drive the fixed disc to rotate, and the fixed disc further drives the knocking piece to rotate and deviates from the upper part of the sieve base; the stand of connecting is rotated in the design, drives through the fixed disk and strikes the piece and deflect, avoids striking the piece and produces the interference to negative pressure sieve and sieve lid installation, is convenient for negative pressure sieve and sieve lid installation.

Preferably, the stand is sleeved with a sleeve, the sleeve is fixedly connected with the screen analysis box, a through hole is formed in the side wall of the sleeve, a positioning pin is inserted into the through hole, a jack is formed in the side wall of the stand, and when the stand drives the fixed disc to rotate to a position right above the screen cover, the positioning pin can be inserted into the jack through the through hole.

Through adopting above-mentioned technical scheme, jack, through-hole and the locating pin of design carry on spacingly to the stand through the cooperation, avoid the piece that strikes to strike and strike sieve lid in-process stand and take place to rotate, ensure to strike the effect.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the designed knocking piece is used for vibrating the powder particles adhered to the screen cover away from the screen cover by knocking the screen cover, so that the experiment error caused by the adhesion of the sample powder to the screen cover is reduced, and the experiment precision is improved;

2. the bull stick and the lug of design, with spacing boss cooperation, rotate the in-process at the bull stick, drive and strike a intermittent type lift, strike the sieve lid repeatedly, reduce the possibility of sample powder adhesion on the sieve lid, and then reduce the experimental error that the sample powder adhesion leads to on the sieve lid, promote the experiment precision.

Drawings

Fig. 1 is an overall structure schematic diagram of a cement fineness negative pressure screen analyzer of the embodiment of the application.

Fig. 2 is an enlarged schematic view of a portion a in fig. 1.

Description of reference numerals: 1. a screen analysis box; 11. a sieve base; 12. negative pressure screening; 13. a screen cover; 2. a column; 3. fixing the disc; 4. a plexor member; 41. a hammer lever; 411. a limiting boss; 42. a hammer head; 5. a rotating rod; 51. a drive member; 52. a bump; 6. a spring; 7. a sleeve; 71. a through hole; 72. and a positioning pin.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses cement fineness negative pressure sieve analysis appearance. Referring to fig. 1 and 2, the cement fineness negative pressure sieve 12 analyzer comprises a sieve analysis box 1, a sieve seat 11 is arranged on the sieve analysis box 1, a negative pressure sieve 12 is arranged on the sieve seat 11, and a sieve cover 13 is arranged on the negative pressure sieve 12.

Referring to fig. 2, the vertical column 2 is rotatably connected to the screen box 1 through the rotary joint, the sleeve 7 is sleeved on the vertical column 2, the sleeve 7 is welded on the screen box 1, a through hole 71 is formed in the side wall of the sleeve 7, a positioning pin 72 is inserted into the through hole 71, a jack is formed in the side wall of the vertical column 2, the vertical column 2 drives the fixed disk 3 to rotate to a position right above the screen cover 13, and the positioning pin 72 can be inserted into the jack through the through hole 71, and the jack is not shown in the. The top of the upright 2 is connected with a fixed disk 3 through a horizontal connecting rod, and the upright 2, the horizontal connecting rod and the fixed disk 3 are all connected by welding.

Referring to fig. 2, at least two groups of knocking parts 4 are arranged on the fixed disk 3, and all the knocking parts 4 are arranged at intervals along the circumferential direction of the fixed disk 3, in the embodiment, three groups of knocking parts 4 are arranged. The knocking member 4 includes a hammer rod 41 disposed through the fixed disk 3 and a hammer head 42 adhered to an end of the hammer rod 41 near the screen cover 13, wherein the hammer head 42 is configured as a rubber hammer. One end of the hammer rod 41, which is far away from the hammer head 42, is in threaded connection with a limiting boss 411, and when the hammer head 42 abuts against the screen cover 13, the limiting boss 411 is located above the fixed disc 3. In order to improve the knocking force, a spring 6 is further sleeved on the hammer rod 41 between the hammer head 42 and the fixed disk 3, and when the hammer head 42 is abutted to the screen cover 13, the spring 6 is in a compressed state.

Referring to fig. 2, the fixed disk 3 is rotatably connected with a rotating rod 5, the axis of the rotating rod 5 is coincident with the axis of the fixed disk 3, a driving part 51 for driving the rotating rod 5 to rotate is installed on the rotating rod 5, the driving part 51 is any one of a driving motor, a rotating cylinder or a rocking handle, in this embodiment, the driving part 51 is set as a driving motor, the driving motor is installed on a bearing plate welded on a horizontal connecting rod, and the output shaft of the driving motor is coaxially connected with the rotating rod 5. The integrative lug 52 that is provided with of bull stick 5 one end far away from 5 pivot, the trajectory of motion of lug 52 and spacing boss 411 projection coincidence in the vertical direction, when tup 42 and sieve lid 13 butt, spacing boss 411 is less than the height of lug 52 with the interval of fixed disk 3, and the face of lug 52 and spacing boss 411 butt is the cambered surface or to keeping away from the inclined plane that corresponds spacing boss 411 direction slope, in this embodiment, the face of lug 52 and spacing boss 411 butt is the inclined plane.

The implementation principle of the cement fineness negative pressure screen analyzer in the embodiment of the application is as follows: during detection, the positioning pin 72 is taken down, the upright post 2 is rotated, and the upright post 2 drives the fixed disc 3 to rotate and deviate from the sieve base 11; taking down the screen cover 13 and the negative pressure screen 12, pouring the weighed powder particles to be measured into the negative pressure screen 12, installing the negative pressure screen 12 on the screen seat 11, and covering the screen cover 13; the upright post 2 is rotated, so that the upright post 2 is reset, the fixed disk 3 is driven to return to the position right above the sieve seat 11, the positioning pin 72 is inserted into the jack through the through hole 71, and the upright post 2 and the fixed disk 3 are positioned. Adjust driving piece 51 work, driving piece 51 drives bull stick 5 and rotates, lug 52 rotates along with bull stick 5, lug 52 rotates the in-process and contacts with spacing boss 411, spacing boss 411 risees along the inclined plane of lug 52, spacing boss 411 drives and beats 4 and risees, make tup 42 and sieve lid 13 separation, spring 6 further compresses, after lug 52 and spacing boss 411 separation, spacing boss 411 and piece 4 that beats descend under gravity and the combined action of spring 6 restoring force, tup 42 striking is on sieve lid 13, make sieve lid 13 produce the vibration, the powder granule of adhesion on sieve lid 13 is shaken from sieve lid 13, go on through negative pressure sieve 12 under the negative pressure effect. After the screening is finished, the driving piece 51 and the screen analysis box 1 are adjusted to be closed, the negative pressure screen 12 is taken down, the weight of the residual cement in the negative pressure screen 12 is weighed, and the fineness of the cement is obtained through calculation.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a cement fineness negative pressure sieve analysis appearance, includes sieve analysis case (1), be provided with sieve seat (11) on sieve analysis case (1), be provided with negative pressure sieve (12) on sieve seat (11), be provided with on negative pressure sieve (12) sieve lid (13), its characterized in that: be provided with stand (2) on sieve analysis case (1), be provided with fixed disk (3) on stand (2), be provided with on fixed disk (3) and strike piece (4), strike piece (4) including running through hammer stem (41) that fixed disk (3) set up with set up in hammer stem (41) are close to tup (42) of sieve lid (13) one end, just during tup (42) and sieve lid (13) butt, hammer stem (41) are kept away from tup (42) one end and are located fixed disk (3) top.

2. The cement fineness negative pressure screen analyzer of claim 1, characterized in that: one end, far away from the hammer head (42), of the hammer rod (41) is provided with a limiting boss (411).

3. The cement fineness negative pressure screen analyzer of claim 2, characterized in that: rotate on fixed disk (3) and be connected with bull stick (5), the axis of bull stick (5) pivot with fixed disk (3) axis is parallel, be provided with the drive in bull stick (5) pivot bull stick (5) pivoted driving piece (51), bull stick (5) are kept away from bull stick (5) pivot one end and are provided with lug (52), the motion trail of lug (52) with spacing boss (411) projection coincidence in vertical direction, during tup (42) and sieve lid (13) butt, spacing boss (411) are less than with the interval of fixed disk (3) the height of lug (52), just lug (52) are the cambered surface with the face of spacing boss (411) butt or to keeping away from the inclined plane of spacing boss (411) direction slope.

4. The cement fineness negative pressure screen analyzer of claim 3, characterized in that: strike piece (4) and be provided with at least two sets ofly, and whole strike piece (4) and follow fixed disk (3) circumference direction interval sets up, the axis of bull stick (5) pivot with fixed disk (3) axis coincidence.

5. The cement fineness negative pressure screen analyzer of claim 1, characterized in that: be provided with spring (6) between tup (42) and fixed disk (3), when tup (42) and sieve lid (13) butt, spring (6) are in compression state.

6. The cement fineness negative pressure screen analyzer of claim 1, characterized in that: the hammer head (42) is a rubber hammer.

7. The cement fineness negative pressure screen analyzer of claim 1, characterized in that: the upright column (2) is rotatably connected with the screen box (1).

8. The cement fineness negative pressure screen analyzer of claim 7, characterized in that: the cover is equipped with sleeve (7) on stand (2), sleeve (7) with sieve analysis case (1) fixed connection, through-hole (71) have been seted up on sleeve (7) lateral wall, it is equipped with locating pin (72) to insert in through-hole (71), the jack has been seted up on stand (2) lateral wall, when stand (2) drive fixed disk (3) rotate directly over to sifter cap (13), locating pin (72) can pass through-hole (71) insert in the jack.