CN112474347A

CN112474347A - Cement negative pressure screen analysis appearance convenient to heat dissipation

Info

Publication number: CN112474347A
Application number: CN202011320643.6A
Authority: CN
Inventors: 王五星
Original assignee: Fuqiang Technology Co ltd
Current assignee: Fuqiang Technology Co ltd
Priority date: 2020-11-23
Filing date: 2020-11-23
Publication date: 2021-03-12
Anticipated expiration: 2040-11-23
Also published as: CN112474347B

Abstract

The invention discloses a cement negative pressure screen analyzer convenient for heat dissipation, which relates to the field of cement processing and comprises an instrument main body, wherein a material storage box is arranged at the bottom of the instrument main body, a material guide block is arranged inside the material storage box, discharge holes are formed in two sides of the material storage box, a blanking hole, a cavity and a material guide hole are respectively formed in the lower part inside the instrument main body, and baffles are fixed on two sides inside the cavity. According to the invention, the third motor, the driving shaft, the blanking port, the cavity, the baffle, the second motor, the second reel, the second pull rope, the discharge port, the rotating shaft and the baffle are arranged, when the impact ball moves to the top of the instrument main body, a worker starts the third motor through the operating platform, the third motor works to drive the driving shaft to rotate, the driving shaft rotates to drive the filter screen to rotate, and after the filter screen rotates by 90 degrees, cement with larger granularity on the filter screen falls to the blanking port and falls into the cavity through the blanking port, so that the cement on the filter screen is convenient to clean.

Description

Cement negative pressure screen analysis appearance convenient to heat dissipation

Technical Field

The invention relates to the field of cement processing, in particular to a cement negative pressure screen analyzer convenient for heat dissipation.

Background

The cement fineness negative pressure screen analyzer is used for testing the fineness of portland cement, common portland cement, slag portland cement, fly ash portland cement and composite portland cement, when the cement fineness negative pressure screen analyzer utilizes air flow as a power medium for screening, the whole system keeps a negative pressure state, fine powder materials to be tested in a screen mesh are in a flow state under the action of air flow sprayed by a rotating air nozzle and move along with the air flow, fine particles with the particle size smaller than the aperture of the screen mesh are driven by the air flow to be pumped away through the screen mesh, and coarse particles with the particle size larger than the aperture of the screen mesh are left in the screen mesh, so that the purpose of screening is achieved.

The cement fineness negative pressure screen analyzer is used for testing the fineness of portland cement, ordinary portland cement, slag portland cement, fly ash portland cement and composite portland cement; when the cement fineness negative pressure screen analyzer works by using air flow as a power medium for screening, the whole system keeps a negative pressure state, fine powder materials to be detected in the screen are in a flow state under the action of the air flow sprayed by the rotating air nozzle and move along with the air flow, wherein fine particles with the particle size smaller than the aperture of the screen are driven by the air flow to be pumped away through the screen, and coarse particles with the particle size larger than the aperture of the screen are left in the screen, so that the purpose of screening is achieved.

Chinese patent that is CN209849227U according to the publication discloses an environmental protection cement fineness negative pressure screen analysis appearance of high leakproofness, the power distribution box comprises a box body, the blast box of taking the air-blast device is installed to the box top surface, seamless being connected with the connecting cylinder of blast box top surface, be connected with the blast pipe that passes the blast box and extend to in the connecting cylinder on the air-blast device, install a plurality of blast nozzles along the equidirectional in the connecting cylinder on the blast pipe, the sealing washer is installed with the contact department of blast box to the blast pipe, seamless being connected with in the upper portion of connecting cylinder has the analysis sieve of bottom surface area sieve mesh, analysis sieve upper portion is installed and is sealed the screen lid of analysis sieve.

The connecting cylinder of the device is seamlessly connected with the analysis screen, the blast box and the like, the dust collection pipe is also connected with the dust treatment mechanism, and the dust treatment mechanism treats the fine cement, so that dust entering air can be greatly reduced, and the pollution to the environment and the harm to the health of people can be reduced; the device adopts the analysis sieve to sieve the cement, small-particle cement falls to the lower part of the inner part of the device main body through the analysis sieve, large-particle cement is retained on the analysis sieve, and the analysis sieve is fixedly arranged in the device, so that a worker is difficult to quickly clean the cement with larger granularity on the analysis sieve, the time for cleaning the analysis sieve is prolonged, and the cement sieving efficiency of a subsequent analysis sieve is reduced; simultaneously the analysis sieve can cause the jam when screening cement, and the device adopts the screw rod and prevents that the mode of stifled needle dredges the sieve mesh of analysis sieve, but this mode needs the staff frequently to operate the screw rod and prevent stifled needle, and then has increased staff's work load, and prevents stifled needle and make the analysis sieve can't sieve cement when dredging the sieve mesh, and then the influence is to the sifting out efficiency of cement.

Disclosure of Invention

The invention aims to: the problem that the effect is not good that is difficult to clear up the great cement of granularity and dredges the analysis sieve on the analysis sieve is solved, a radiating cement negative pressure sieve analysis appearance of being convenient for is provided.

In order to achieve the purpose, the invention provides the following technical scheme: a cement negative pressure screen analyzer convenient for heat dissipation comprises an instrument main body, wherein a storage box is installed at the bottom of the instrument main body, a material guide block is installed inside the storage box, discharge ports are formed in two sides of the storage box, a blanking port, a cavity and a material guide port are respectively formed in the lower portion inside the instrument main body, baffles are fixed on two sides inside the cavity, a partition plate is installed on one side inside the material guide port through a rotating shaft, a boss and two second motors are respectively installed at the middle position inside the instrument main body, second reels are sleeved on output ends of the two second motors, second pull ropes are connected to the outer surfaces of the two second reels, the bottom end of each second pull rope is connected with the top of the partition plate, an air pump is installed inside the boss, and an air inlet end of the air pump is connected with an air inlet pipe extending to the outside of the instrument main body, the air outlet end of the air pump is connected with an exhaust pipe extending to the top of the boss, the periphery of the exhaust pipe is connected with air injection pipes, a third motor is installed above one side of the instrument main body, the output end of the third motor is connected with a driving shaft extending to the inside of the instrument main body, one end of the driving shaft is connected with the inner wall of the instrument main body through a bearing, a filter screen is sleeved on the outer surface of the driving shaft, sliding grooves are formed in two sides of the inside of the instrument main body, sliding blocks are connected with the inside of the two sliding grooves, a connecting rod is fixed between the two sliding blocks, a plurality of vibration balls are installed at the bottom of the connecting rod, a plurality of extension springs are installed in the instrument main body, the bottom ends of the extension springs are connected with the top of the connecting rod, motor boxes are fixed on two sides of the top of, first reel has been cup jointed to the output of first motor, the surface of first reel is connected with first stay cord, the bottom of first stay cord extends to the inside of instrument main part and contacts with the connecting rod, the feeder hopper is installed to the top intermediate position department of instrument main part, sealed lid is installed at the top of feeder hopper.

Preferably, half of the width of filter screen is less than the interval between filter screen and the jarring ball, and a plurality of the equal equidistance of jarring ball distributes and the bottom of connecting rod.

Preferably, the partition plate is rotatably connected with the material guide port through a rotating shaft, and the partition plate is matched with the material guide port.

Preferably, the baffle is inclined downwards along the direction of the partition, one side of the baffle is positioned right above the partition, and the top of the baffle is smooth.

Preferably, half of the width of the filter screen is smaller than the distance between the filter screen and the exhaust pipe, and the filter screen is positioned right above the exhaust pipe.

Preferably, the gas ejector pipe is provided with a plurality of gas ejector pipes, a plurality of gas ejector pipes are distributed around the exhaust pipe in an annular array shape, and the length of each gas ejector pipe is smaller than the length of the top of the boss.

Preferably, the blanking port is communicated with the cavity, the cavity is communicated with the material guiding port, and the blanking port is conical.

Preferably, both sides of the material guide block are inclined downwards along the direction of the material outlet, and both sides of the material guide block are smooth.

Preferably, the connecting rod is slidably connected with the sliding groove through a sliding block, and the diameter of the connecting rod is smaller than that of the driving shaft.

Preferably, an operation table is installed on the outer surface of the instrument main body, and the operation table is electrically connected with the first motor, the second motor, the third motor and the air pump respectively.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention is provided with a third motor, a driving shaft, a blanking port, a cavity, a baffle, a second motor, a second reel, a second pull rope, a discharge port, a rotating shaft and a baffle, when a shocking ball moves to the top of an instrument main body, a worker starts the third motor through an operation table, the third motor drives the driving shaft to rotate, the driving shaft rotates to drive a filter screen to rotate, cement with larger granularity on the filter screen falls to the blanking port after the filter screen rotates for 90 degrees and falls into the cavity through the blanking port, the worker starts the second motor on the right side through the operation table at the moment, the second motor drives the second reel to rotate, the second reel rotates to release the second pull rope, the baffle can bear the pressure applied by the cement after the second pull rope is released, the baffle rotates through the rotating shaft at the moment, the cement with larger granularity can fall into the guide port on the right side after the baffle rotates and is opened, and drop to the storage incasement through the guide mouth, and then the accessible discharge gate is discharged, and great cement of granularity on this mode can make things convenient for the staff to clear up the screen cloth fast, and improves the cleaning efficiency to the great cement of granularity to the screening efficiency of follow-up analysis sieve to cement has been improved.

2. When the filter screen sieves cement, a worker starts the first motor through the operating platform, the first motor works to drive the first reel to rotate, the first reel rotates to wind the first pull rope, the first pull rope pulls up the connecting rod after being wound so that the connecting rod drives the sliding block to slide in the sliding groove, meanwhile, the connecting rod drives the shake ball to move upwards, the connecting rod extrudes the extension spring to enable the extension spring to be stressed and compressed, then, the worker enables the first motor to work through the operating platform and drives the first reel to rotate reversely, the first reel rotates reversely to release the first pull rope, after the first pull rope is released, the extension spring recovers elasticity and stretches, the connecting rod is pushed to move downwards, the connecting rod moves downwards to drive the shake ball to move downwards, and the shake ball moves downwards to vibrate the filter screen, thereby can make the filter screen take place the vibration, then the staff repeats above-mentioned operating procedure to make the upper and lower jarring filter screen that the jarring ball has the frequency, thereby can prevent that the filter screen from taking place to block up, and need not to worry that the filter screen is constructed by the dredging machine and is blockked up, and then makes the filter screen can be orderly sieve cement.

Drawings

FIG. 1 is a perspective view of the main body of the instrument of the present invention;

FIG. 2 is a schematic front sectional view of the main body of the apparatus of the present invention;

FIG. 3 is a schematic view of a partial structure of the extension spring according to the present invention;

FIG. 4 is an enlarged structural diagram A of the present invention;

fig. 5 is an enlarged structural diagram B of the present invention.

In the figure: 1. an instrument body; 2. a material storage box; 3. a material guide block; 4. a discharge port; 5. an air inlet pipe; 6. an air extractor; 7. a first motor; 8. a drive shaft; 9. filtering with a screen; 10. a slider; 11. a motor case; 12. a second motor; 13. a feed hopper; 14. an extension spring; 15. a first reel; 16. a first pull cord; 17. a connecting rod; 18. a chute; 19. hitting the ball by shaking; 20. a bearing; 21. a boss; 22. a blanking port; 23. a third motor; 24. a baffle plate; 25. a material guide port; 26. a second pull cord; 27. a second reel; 28. a rotating shaft; 29. a partition plate; 30. an exhaust pipe; 31. a gas ejector tube; 32. an operation table; 33. a cavity.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. The following describes an embodiment of the present invention based on its overall structure.

Referring to fig. 1-5, a cement negative pressure screen analyzer convenient for heat dissipation includes an instrument main body 1, a storage box 2, a material guiding block 3, a material outlet 4, an air inlet pipe 5, an air extractor 6, a first motor 7, a driving shaft 8, a filter screen 9, a slider 10, a motor box 11, a second motor 12, a feeding hopper 13, a tension spring 14, a first reel 15, a first pulling rope 16, a connecting rod 17, a chute 18, a vibration ball 19, a bearing 20, a boss 21, a blanking port 22, a third motor 23, a baffle 24, a material guiding port 25, a second pulling rope 26, a second reel 27, a rotating shaft 28, a partition 29, an exhaust pipe 30, an air injection pipe 31, an operation table 32 and a cavity 33, wherein the storage box 2 is installed at the bottom of the instrument main body 1, the material guiding block 3 is installed inside the storage box 2, the material outlet 4 is installed at both sides of the storage box 2, the blanking port 22, the blanking port, The air extractor comprises a cavity 33 and a material guide port 25, baffles 24 are fixed on two sides of the interior of the cavity 33, a partition plate 29 is mounted on one side of the interior of the material guide port 25 through a rotating shaft 28, a boss 21 and two second motors 12 are respectively mounted at the middle position of the interior of the instrument main body 1, second reels 27 are respectively sleeved on the output ends of the two second motors 12, second pull ropes 26 are respectively connected to the outer surfaces of the two second reels 27, the bottom ends of the second pull ropes 26 are connected with the top of the partition plate 29, an air extractor 6 is mounted inside the boss 21, an air inlet pipe 5 extending to the exterior of the instrument main body 1 is connected to the air inlet end of the air extractor 6, an air outlet pipe 30 extending to the top of the boss 21 is connected to the air outlet end of the air extractor 6, air injection pipes 31 are respectively connected to the periphery of the air outlet pipe 30, a third motor 23 is mounted above one side, one end of a driving shaft 8 is connected with the inner wall of an instrument main body 1 through a bearing 20, a filter screen 9 is sleeved on the outer surface of the driving shaft 8, sliding grooves 18 are formed in two sides of the inside of the instrument main body 1, sliding blocks 10 are connected in the two sliding grooves 18, a connecting rod 17 is fixed between the two sliding blocks 10, a plurality of vibration balls 19 are installed at the bottom of the connecting rod 17, a plurality of extension springs 14 are installed in the instrument main body 1, the bottom ends of the extension springs 14 are connected with the top of the connecting rod 17, motor boxes 11 are fixed on two sides of the top of the instrument main body 1, a first motor 7 is installed in each motor box 11, a first reel 15 is sleeved at the output end of the first motor 7, a first pull rope 16 is connected to the outer surface of the first reel 15, the bottom end of the first pull rope 16 extends to the inside of the instrument main body 1 and is in contact with, the top of the feed hopper 13 is provided with a sealing cover.

Please refer to fig. 1-3, the half width of the filter screen 9 is smaller than the distance between the filter screen 9 and the impact balls 19, the impact balls 19 are distributed at equal distance from the bottom of the connecting rod 17, which facilitates the rotation of the filter screen 9, and the impact balls 19 can impact the filter screen 9 to prevent the filter screen 9 from being blocked; the partition 29 is rotatably connected with the material guide opening 25 through the rotating shaft 28, the partition 29 is matched with the material guide opening 25, the partition 29 is convenient to rotate through the rotating shaft 28, and then the partition 29 can be opened or closed, so that discharging is convenient or blocked.

Please refer to fig. 1, fig. 2, fig. 3 and fig. 5, the baffle 24 is inclined downwards along the direction of the partition 29, one side of the baffle 24 is located right above the partition 29, the top of the baffle 24 is smooth, so that the cement can slide down onto the partition 29 through the baffle 24, and the cement can be discharged conveniently; half the width of filter screen 9 is less than the interval between filter screen 9 and blast pipe 30, and filter screen 9 is located blast pipe 30 directly over, makes things convenient for filter screen 9 to rotate, prevents that blast pipe 30 from hindering filter screen 9 to rotate.

Please refer to fig. 1-3, a plurality of gas nozzles 31 are provided, the plurality of gas nozzles 31 are distributed around the exhaust pipe 30 in an annular array, the length of the gas nozzles 31 is smaller than the length of the top of the boss 21, so that the gas can enter the gas nozzles 31 and be sprayed to the periphery inside the instrument main body 1, thereby blowing up the cement with small granularity, and further assisting the filter screen 9 to screen the cement; the blanking port 22 is communicated with the cavity 33, the cavity 33 is communicated with the material guiding port 25, and the blanking port 22 is conical, so that cement can conveniently fall into the cavity 33 through the blanking port 22, and the cavity 33 can conveniently store the cement.

Please refer to fig. 1-3, both sides of the guiding block 3 are inclined downwards along the direction of the discharging port 4, both sides of the guiding block are smooth, so as to lead out the cement conveniently, and the cement is discharged from the discharging port 4, so as to prevent the cement from being stored in the storage box 2; connecting rod 17 passes through

slider

10 and 18 sliding connection of spout, and the diameter of connecting rod 17 is less than the diameter of drive shaft 8, makes things convenient for connecting rod 17 to move up, and then can drive shake batting 19 and reciprocate for shake batting 19 can have the frequency to carry out the jarring to filter screen 9.

Please refer to fig. 1-4, the operation table 32 is installed on the outer surface of the main body 1, and the operation table 32 is electrically connected to the first motor 7, the second motor 12, the third motor 23 and the air pump 6 respectively, so as to facilitate the worker to turn on or off the first motor 7, the second motor 12, the third motor 23 and the air pump 6.

The working principle is as follows: firstly, the worker installs the instrument and connects the power supply, then the worker takes out the sealing cover, and adds cement into the instrument main body 1 through the feed hopper 13, the sealing cover is covered on the top of the feed hopper 13 again after the addition is completed, then the worker starts the first motor 7 and the air pump 6 through the operation panel 32, the air pump 6 works to make the air injection pipe 31 inject air into the instrument main body 1, so that cement with smaller granularity can be blown, meanwhile, the first motor 7 works to drive the first reel 15 to rotate, the first reel 15 rotates to wind the first pull rope 16, the first pull rope 16 winds and pulls up the connecting rod 17, so that the connecting rod 17 drives the sliding block 10 to slide in the sliding groove 18, meanwhile, the connecting rod 17 drives the vibration ball 19 to move upwards, and the connecting rod 17 extrudes the tension spring 14, so that the tension spring 14 is compressed by force, then the worker enables the first motor 7 to work through the operation panel 32, and drives the first reel 15 to rotate reversely, the first reel 15 rotates reversely to release the first pull rope 16, after the first pull rope 16 is released, the extension spring 14 recovers elasticity and stretches, and further pushes the connecting rod 17 to move downwards, the connecting rod 17 moves downwards to drive the vibration ball 19 to move downwards, the vibration ball 19 moves downwards to vibrate the filter screen 9, so that the filter screen 9 can vibrate, then the operator repeats the above operation steps, so that the vibration ball 19 vibrates the filter screen 9 up and down with frequency, cement with smaller granularity drops to the blanking port 22 through the filter screen 9 and enters the cavity 33, at the moment, the operator starts the second motor 12 on the left through the operation table 32, the second motor 12 operates to drive the second reel 27 to rotate, the second reel 27 rotates to release the second pull rope 26, after the second pull rope 26 is released, the partition 29 can bear the pressure applied by the cement, at the moment, the partition 29 rotates through the rotating shaft 28, after the partition 29 is rotated and opened, cement with smaller granularity enters the material guide block 3 through the material guide opening 25 on the left and slides to the material outlet 4 through the material guide block 3, so that the cement with smaller granularity can be discharged, and heat in the instrument main body 1 is discharged from the material guide opening 25, the cavity 33 and the material outlet 4; if the cement with larger granularity on the filter screen 9 needs to be cleaned, the vibration ball 19 is ensured to move to the uppermost part of the instrument main body 1, then the worker starts the third motor 23 through the operation table 32, the third motor 23 works to drive the driving shaft 8 to rotate, the driving shaft 8 rotates to drive the filter screen 9 to rotate, after the filter screen 9 rotates 90 degrees, the cement with larger granularity on the filter screen 9 falls to the blanking port 22 and falls into the cavity 33 through the blanking port 22, at the moment, the worker starts the second motor 12 on the right through the operation table 32, the second motor 12 works to drive the second reel 27 to rotate, the second reel 27 rotates to release the second pull rope 26, after the second pull rope 26 is released, the partition plate 29 can bear the pressure applied by the cement, at the moment, the partition plate 29 rotates through the rotating shaft 28, the cement with larger granularity can fall into the guide port 25 on the right after the partition plate 29 rotates and is opened, and drop to storage case 2 in through guide port 25, and then the accessible discharge gate 4 discharges, and this mode can make things convenient for the staff to clear up the great cement of granularity on the filter screen 9 fast.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a cement negative pressure sieve analysis appearance convenient to heat dissipation, includes instrument main part (1), its characterized in that: the instrument comprises an instrument body (1), a storage box (2) is installed at the bottom of the instrument body (1), a material guide block (3) is installed inside the storage box (2), discharge ports (4) are formed in two sides of the storage box (2), a blanking port (22), a cavity (33) and a material guide port (25) are formed in the lower portion inside the instrument body (1) respectively, baffles (24) are fixed on two sides inside the cavity (33), a partition plate (29) is installed on one side inside the material guide port (25) through a rotating shaft (28), a boss (21) and two second motors (12) are installed at the middle position inside the instrument body (1) respectively, second winding wheels (27) are sleeved on the output ends of the two second motors (12), second pull ropes (26) are connected to the outer surfaces of the two second winding wheels (27), and the bottom ends of the second pull ropes (26) are connected with the tops of the partition plates (29), the air extractor (6) is installed inside the boss (21), the air inlet end of the air extractor (6) is connected with an air inlet pipe (5) extending to the outside of the instrument main body (1), the air outlet end of the air extractor (6) is connected with an air outlet pipe (30) extending to the top of the boss (21), the periphery of the air outlet pipe (30) is connected with air injection pipes (31), a third motor (23) is installed above one side of the instrument main body (1), the output end of the third motor (23) is connected with a driving shaft (8) extending to the inside of the instrument main body (1), one end of the driving shaft (8) is connected with the inner wall of the instrument main body (1) through a bearing (20), a filter screen (9) is sleeved on the outer surface of the driving shaft (8), sliding grooves (18) are formed in both sides of the inside of the instrument main body (1), and sliding blocks (10) are connected in the, two be fixed with connecting rod (17) between slider (10), a plurality of vibrations are installed to the bottom of connecting rod (17) and are strikeed (19), the internally mounted of instrument main part (1) has a plurality of extension spring (14), just the bottom of extension spring (14) is connected with the top of connecting rod (17), the top both sides of instrument main part (1) all are fixed with motor case (11), the internally mounted of motor case (11) has first motor (7), first reel (15) have been cup jointed to the output of first motor (7), the surface of first reel (15) is connected with first stay cord (16), the bottom of first stay cord (16) extends to the inside of instrument main part (1) and contacts with connecting rod (17), feeder hopper (13) are installed to the top intermediate position department of instrument main part (1), and a sealing cover is arranged at the top of the feed hopper (13).

2. The cement negative pressure screen analyzer convenient for heat dissipation of claim 1, wherein: half the width of filter screen (9) is less than the interval between filter screen (9) and jarring ball (19), and a plurality of the equal distance distribution of jarring ball (19) and the bottom of connecting rod (17).

3. The cement negative pressure screen analyzer convenient for heat dissipation of claim 1, wherein: the partition plate (29) is rotatably connected with the material guide opening (25) through a rotating shaft (28), and the partition plate (29) is matched with the material guide opening (25).

4. The cement negative pressure screen analyzer convenient for heat dissipation of claim 1, wherein: the baffle (24) inclines downwards along the direction of the partition plate (29), one side of the baffle (24) is positioned right above the partition plate (29), and the top of the baffle (24) is smooth.

5. The cement negative pressure screen analyzer convenient for heat dissipation of claim 1, wherein: half width of filter screen (9) is less than filter screen (9) to blast pipe (30) interval within a definite time, filter screen (9) are located blast pipe (30) directly over.

6. The cement negative pressure screen analyzer convenient for heat dissipation of claim 1, wherein: the gas injection pipe (31) is provided with a plurality of, a plurality of gas injection pipes (31) are distributed around the exhaust pipe (30) in an annular array shape, and the length of the gas injection pipes (31) is smaller than the length of the top of the boss (21).

7. The cement negative pressure screen analyzer convenient for heat dissipation of claim 1, wherein: the blanking port (22) is communicated with the cavity (33), the cavity (33) is communicated with the material guiding port (25), and the blanking port (22) is conical.

8. The cement negative pressure screen analyzer convenient for heat dissipation of claim 1, wherein: both sides of the material guide block (3) are inclined downwards along the direction of the material outlet (4), and both sides of the material guide block are smooth.

9. The cement negative pressure screen analyzer convenient for heat dissipation of claim 1, wherein: the connecting rod (17) is in sliding connection with the sliding groove (18) through the sliding block (10), and the diameter of the connecting rod (17) is smaller than that of the driving shaft (8).

10. The cement negative pressure screen analyzer convenient for heat dissipation of claim 1, wherein: the outer surface mounting of instrument main part (1) has operation panel (32), operation panel (32) respectively with first motor (7), second motor (12), third motor (23) and air extractor (6) electric connection.