Cement fineness negative pressure screen analysis instrument

Abstract

The utility model relates to the technical field of building detection equipment, and discloses a cement fineness negative pressure screen analysis instrument which comprises a shell, a screen seat is fixedly connected to the interior of the shell, a negative pressure screen is placed on the top of the screen seat, a screen cover is placed on the top of the negative pressure screen, a cyclone pipe is fixedly connected to the bottom of the screen seat, and the cyclone pipe is fixedly connected to the bottom of the shell. And the other end of the cyclone pipe is in threaded connection with a collecting bottle, the outer side of the screen seat is fixedly connected with an exhaust pipe, and the other end of the exhaust pipe is fixedly connected with a shell. According to the cement screening device, cement particles in the screen seat are sucked in through the air draft motor, meanwhile, the impeller can be driven to rotate when air enters the screen seat, then the connecting rod can drive the fixing block and the scraping plate to clean the particles adsorbed on the outer side of the filter plate, the filter plate can be prevented from being blocked, and the cement detection effect can be improved; meanwhile, the scraping plate can be in contact with the filter plate under the action of the pressure spring I, so that the cleaning effect of the scraping plate can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building detection equipment, in particular to a cement fineness negative pressure screening instrument. Background Art

[0002] Cement is an important component of building materials, and its quality directly affects the service life and safety of buildings. The use of cement negative pressure sieving instrument can accurately measure the particle size, shape, density and other parameter values ​​in cement materials to help manufacturers control production processes and improve product quality. When the cement fineness negative pressure sieving instrument uses airflow as the motive medium for screening, the entire system maintains a negative pressure state. The fine powder material to be tested in the screen is in a fluid state under the action of the airflow ejected from the rotating air nozzle, and moves with the airflow. The fine particles with a particle size smaller than the screen mesh aperture are driven by the airflow through the screen and are sucked away, while the coarse particles with a particle size larger than the screen mesh aperture remain in the screen to achieve the purpose of screening.

[0003] After searching, Chinese patent announcement number: CN208688950U discloses a cement fineness negative pressure screening instrument, including a box body, an analysis sieve is arranged on the top of the box body, a cyclone is arranged in the box body at the outlet end of the analysis sieve, a dust collecting chamber is arranged at the bottom of the cyclone, a connecting pipe is arranged on the side wall of the cyclone, the connecting pipe is bent and passed through the outside of the box body to be connected with a dust cleaning chamber, the dust cleaning chamber includes a shell body, a water receiving pan is arranged at the bottom of the shell body, a water pump is arranged in the water receiving pan, a water pump is connected to the water pump, the water pump is connected to a water pump, the water pump extends upward and is connected to an annular water sprinkler ring at its water outlet, an exhaust motor is arranged above the annular water sprinkler ring, and an air outlet is arranged above the exhaust motor.

[0004] Although the above technology can solve the problem of dust pollution during the negative pressure screening test of cement fineness, there are still some shortcomings. During use, due to the suction force, larger particles will be adsorbed on the outside of the filter. When used for a long time, the filter will be blocked and smaller impurities will not be sucked out, thereby reducing the effect of cement detection. Therefore, a cement fineness negative pressure screening instrument is proposed to solve the above problem. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a cement fineness negative pressure screening instrument, which aims to improve the problem in the prior art that larger particles will cause the filter to become blocked when used for a long time, resulting in the inability to absorb smaller impurities, thereby reducing the effect of cement detection.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a cement fineness negative pressure screening instrument, comprising a shell, a sieve seat is fixedly connected inside the shell, a negative pressure screen is placed on the top of the sieve seat, a sieve cover is placed on the top of the negative pressure screen, a cyclone tube is fixedly connected to the bottom of the sieve seat, a collecting bottle is threadedly connected to the other end of the cyclone tube, an exhaust pipe is fixedly connected to the outside of the sieve seat, the other end of the exhaust pipe is fixedly connected to the shell, an exhaust motor is arranged in the middle of the shell, a water pump is fixedly connected inside the shell, a water pipe is fixedly connected to the output end of the water pump, an annular sprinkler ring is fixedly connected to the other end of the water pipe, a filter plate is fixedly connected to the middle of the exhaust pipe, a collar is fixedly connected to the middle of the collar, an impeller is rotatably connected to the side of the impeller close to the filter plate, the connecting rod is rotatably connected to the middle of the filter plate, a fixed block is fixedly connected to the outer periphery of the connecting rod, a scraper is arranged inside the fixed block, and an elastic component is fixedly connected to the inside of the fixed block;

[0007] Through the above technical scheme, the exhaust pipe can be used to suck in the cement particles inside the sieve seat through the exhaust motor. At the same time, the filter plate can prevent the exhaust pipe from sucking in larger particles, and the air will drive the impeller to rotate during the suction. When the impeller rotates, the connecting rod can drive the fixed block to move. When the fixed block moves, the scraper can clean the particles adsorbed on the outside of the filter plate, thereby preventing the filter plate from being blocked. At the same time, the scraper can be brought into contact with the filter plate under the action of the compression spring, thereby improving the cleaning effect of the scraper.

[0008] Furthermore, the elastic component includes a compression spring 1, the compression spring 1 is fixedly connected to the inside of the fixed block, and the other end of the compression spring 1 is fixedly connected to a side of the scraper close to the fixed block;

[0009] Through the above technical solution, the compression spring 1 can ensure that the scraper can contact the filter plate when the scraper is worn, thereby improving the cleaning effect of the filter plate.

[0010] Further, a filter box is slidably connected inside the shell, a fixing plate is fixedly connected to the outside of the filter box, a second compression spring is fixedly connected inside the fixing plate, a clamping block is fixedly connected to the other end of the second compression spring, a clamping slot is provided in the middle of the shell, the clamping block and the clamping slot are plugged and matched, and a disassembly component is rotatably connected to the middle of the fixing plate;

[0011] Through the above technical solution, when the fixing plate is inserted into the shell, the shell will contact the block. At this time, the shell will squeeze the block and make the block compress the compression spring 2. When the block moves to a position parallel to the slot and there is no external force squeezing the block, the block can be bounced into the slot under the action of the compression spring 2, and then the filter box can be installed and fixed.

[0012] Further, the disassembly assembly includes a rotating rod, the rotating rod is rotatably connected to the middle part of the fixed plate, a pull rope is fixedly connected to the outer side of the rotating rod, and the other end of the pull rope is fixedly connected to a side of the clamping block close to the second compression spring;

[0013] Through the above technical solution, the pull rope can be reeled in by rotating the rotating rod, and the clamping block and the clamping slot can be separated when the pull rope is reeled in, so that the fixing plate can be removed, which makes it easy to take out the filter box and clean the filtered impurities.

[0014] Furthermore, a filter screen is fixedly connected to the outer side of the housing;

[0015] Through the above technical solution, the exhausted air can be discharged from the interior of the housing through the filter.

[0016] Furthermore, a positioning groove is provided in the middle of the housing, and the fixing plate is slidably connected to the middle of the positioning groove;

[0017] Through the above technical solution, the fixing plate can be limited by the positioning groove, which can avoid the problem that the filter box cannot be installed due to the fixing plate tilting, and at the same time can improve the installation speed of the filter box.

[0018] Furthermore, one end of the rotating rod away from the fixing plate is fixedly connected to a handle, and an anti-slip groove is provided on the outer side of the handle;

[0019] Through the above technical solution, the rotating rod can be effectively and comfortably rotated through the grip and the anti-slip groove.

[0020] Furthermore, a partition is slidably connected inside the fixed plate, and the partition is fixedly connected between the second compression spring and the clamping block;

[0021] Through the above technical solution, the block can be limited by the partition, and at the same time, the problem of deformation and damage of the compression spring 2 caused by tilting and squeezing can be avoided, thereby improving the service life of the compression spring 2.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the utility model, the exhaust pipe can suck the cement particles inside the sieve seat through the exhaust motor, and the impeller will be driven to rotate when the air enters. When the impeller rotates, the connecting rod can drive the fixed block and the scraper to clean the particles adsorbed on the outside of the filter plate, thereby preventing the filter plate from being blocked. At the same time, under the action of the compression spring, the scraper can contact the filter plate, thereby improving the cleaning effect of the scraper and improving the effect of cement detection.

[0024] 2. In the utility model, the filter box can be used to filter finer particles in the water, thereby preventing the particles in the water from entering the water pump and causing damage to the water pump. By inserting the fixing plate into the shell, when the card block is moved to a position parallel to the card slot, the card block can be bounced into the card slot under the action of the second compression spring. At this time, the filter box can be quickly installed and fixed, and the card block and the card slot can be separated by rotating the rotating rod and the pull rope, and then the filter box can be quickly removed, which is convenient for cleaning the filtered impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A three-dimensional schematic diagram of a cement fineness negative pressure sieving instrument proposed by the utility model;

[0026] Figure 2 This is a schematic diagram of the structure of a collecting bottle of a cement fineness negative pressure sieving instrument proposed by the utility model;

[0027] Figure 3 This is a structural schematic diagram of an impeller of a cement fineness negative pressure sieving instrument proposed by the utility model;

[0028] Figure 4 This is a structural schematic diagram of a scraper of a cement fineness negative pressure sieving instrument proposed by the utility model;

[0029] Figure 5 This is a structural schematic diagram of a card slot of a cement fineness negative pressure sieving instrument proposed by the utility model;

[0030] Figure 6 The utility model provides a structural schematic diagram of a card block of a cement fineness negative pressure sieving instrument.

[0031] Legend:

[0032] 1. Outer shell; 2. Sieve seat; 3. Negative pressure screen; 4. Sieve cover; 5. Cyclone tube; 6. Collecting bottle; 7. Exhaust pipe; 8. Filter plate; 9. Ring; 10. Impeller; 11. Connecting rod; 12. Fixed block; 13. Scraper; 14. Compression spring 1; 15. Shell; 16. Water pump; 17. Water pipe; 18. Annular sprinkler ring; 19. Exhaust motor; 20. Filter box; 21. Fixed plate; 22. Compression spring 2; 23. Block; 24. Slot; 25. Turn rod; 26. Pull rope; 27. Positioning slot; 28. Filter. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] Reference Figure 1-Figure 3 The utility model provides an embodiment: a cement fineness negative pressure screening instrument, comprising a shell 1, a sieve seat 2 is fixedly connected inside the shell 1, a negative pressure screen 3 is placed on the top of the sieve seat 2, a sieve cover 4 is placed on the top of the negative pressure screen 3, a cyclone tube 5 is fixedly connected to the bottom of the sieve seat 2, and a collecting bottle 6 is threadedly connected to the other end of the cyclone tube 5, through which the incoming particles can be collected, and the collecting bottle 6 can be rotated and removed to clean the collected particles, an exhaust pipe 7 is fixedly connected to the outside of the sieve seat 2, the other end of the exhaust pipe 7 is fixedly connected to a shell 15, an exhaust motor 19 is arranged in the middle of the shell 15, a water pump 16 is fixedly connected to the inside of the shell 15, the output end of the water pump 16 is fixedly connected to a water pipe 17, the other end of the water pipe 17 is fixedly connected to an annular sprinkler ring 18, and a filter plate 8 is fixedly connected to the middle of the exhaust pipe 7.

[0035] Reference Figure 2-Figure 4 A collar 9 is fixedly connected to the middle part of the exhaust pipe 7, and an impeller 10 is rotatably connected to the middle part of the collar 9. A connecting rod 11 is fixedly connected to one side of the impeller 10 close to the filter plate 8. The connecting rod 11 is rotatably connected to the middle part of the filter plate 8. A fixing block 12 is fixedly connected to the outer periphery of the connecting rod 11, and a scraper 13 is arranged inside the fixing block 12. The exhaust motor 19 can make the exhaust pipe 7 suck in the cement particles inside the sieve seat 2. At the same time, under the action of the filter plate 8, the exhaust pipe 7 can be prevented from sucking in larger particles and then storing them in the casing 15. At the same time, the air will drive the impeller 10 to rotate during the suction. When the impeller 10 rotates, the connecting rod 11 can drive the fixing block 12 to move. When the fixing block 12 moves, the scraper 13 can clean the particles adsorbed on the outside of the filter plate 8, thereby preventing the filter plate 8 from being blocked.

[0036] Reference Figure 2-Figure 4By driving the water pump 16, the liquid can enter the water pipe 17 and then be sprayed out through the annular sprinkler ring 18, so that the particles carried in the air can be adsorbed. At this time, the air can be discharged through the exhaust motor 19. The interior of the fixed block 12 is fixedly connected with an elastic component, and the elastic component includes a compression spring 14. The compression spring 14 is fixedly connected to the interior of the fixed block 12. The other end of the compression spring 14 is fixedly connected to the side of the scraper 13 close to the fixed block 12. The scraper 13 can be limited by the compression spring 14, so that the scraper 13 can be moved in the middle of the fixed block 12. When the scraper 13 is worn, it can be ensured that the scraper 13 can contact the filter plate 8, which can increase the service life of the scraper 13 and improve the cleaning effect of the filter plate 8. The outer side of the shell 1 is fixedly connected with a filter screen 28, and the exhausted air can be discharged from the interior of the shell 1 through the filter screen 28.

[0037] Reference Figure 5 and Figure 6 The filter box 20 is slidably connected to the inside of the housing 15, and the outside of the filter box 20 is fixedly connected to the fixing plate 21. A positioning groove 27 is opened in the middle of the housing 15, and the fixing plate 21 is slidably connected to the middle of the positioning groove 27. The fixing plate 21 can be limited by the positioning groove 27, thereby preventing the fixing plate 21 from tilting when moving, and avoiding the problem that the filter box 20 cannot be installed due to the tilt of the fixing plate 21. The inside of the fixing plate 21 is fixedly connected to the second compression spring 22, and the other end of the second compression spring 22 is fixedly connected to the block 23, and the block 23 and The shell 15 is in contact with each other, and a slot 24 is provided in the middle of the shell 15. The block 23 and the slot 24 are plugged together. When the fixing plate 21 enters the positioning slot 27, the shell 15 will contact the block 23, so that the shell 15 can squeeze the block 23 and move the block 23. When the block 23 moves, the compression spring 22 can be compressed. When the block 23 moves to a position parallel to the slot 24 and the block 23 is not squeezed by external force, the block 23 can be bounced into the slot 24 under the action of the compression spring 22, and the filter box 20 can be installed and fixed.

[0038] Reference Figure 5 and Figure 6The interior of the fixed plate 21 is slidably connected with a partition, which is fixedly connected between the compression spring 22 and the block 23. The block 23 can be limited by the partition, thereby preventing the block 23 from tilting when moving, and at the same time preventing the compression spring 22 from being deformed and damaged due to tilting and squeezing, thereby improving the service life of the compression spring 22. The middle part of the fixed plate 21 is rotatably connected with a disassembly component, and the disassembly component includes a rotating rod 25, which is rotatably connected to the middle part of the fixed plate 21, and the outer part of the rotating rod 25 A pull rope 26 is fixedly connected to the side, and the other end of the pull rope 26 is fixedly connected to the side of the block 23 close to the compression spring 22. The pull rope 26 can be retracted by rotating the rotating rod 25. At the same time, the block 23 can be pulled out from the middle of the slot 24 when the pull rope 26 is retracted, and then the fixed plate 21 can be removed, so that the filter box 20 can be taken out and the filtered impurities can be cleaned. The end of the rotating rod 25 away from the fixed plate 21 is fixedly connected to a handle, and an anti-slip groove is provided on the outside of the handle. The rotating rod 25 can be effectively and comfortably rotated through the handle and the anti-slip groove.

[0039] Working principle: When in use, the suction pipe 7 can suck the cement particles inside the sieve seat 2 through the exhaust motor 19, and the suction pipe 7 can be prevented from sucking in larger particles under the action of the filter plate 8, and the air will drive the impeller 10 to rotate during the suction, and the connecting rod 11 can drive the fixed block 12 to move when the impeller 10 rotates, and the scraper 13 can clean the particles adsorbed on the outside of the filter plate 8 when the fixed block 12 moves, thereby preventing the filter plate 8 from being blocked, and the scraper 13 can be brought into contact with the filter plate 8 under the action of the compression spring 14, thereby improving the cleaning effect of the scraper 13, and the filter plate 8 can also be cleaned when the scraper 13 is worn;

[0040] Among them, the filter box 20 can be used to filter finer particles filtered by water, thereby preventing particles in the water from entering the water pump 16 and causing damage to the water pump 16. By inserting the fixing plate 21 into the shell 15 and when the fixing plate 21 enters, the shell 15 will squeeze the block 23 and make the block 23 compress the compression spring 22. At the same time, when the block 23 moves to a position parallel to the slot 24, the block 23 can be bounced into the slot 24 under the action of the compression spring 22. At this time, the filter box 20 can be quickly installed and fixed, and the block 23 and the slot 24 can be separated by rotating the rotating rod 25 and under the action of the pull rope 26, and then the filter box 20 can be quickly removed, which is convenient for cleaning the filtered impurities.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cement fineness negative pressure sieving instrument, comprising a housing (1), characterized in that: A sieve seat (2) is fixedly connected to the inside of the housing (1), a negative pressure sieve (3) is placed on the top of the sieve seat (2), a sieve cover (4) is placed on the top of the negative pressure sieve (3), a cyclone tube (5) is fixedly connected to the bottom of the sieve seat (2), the other end of the cyclone tube (5) is threadedly connected to a collecting bottle (6), an exhaust pipe (7) is fixedly connected to the outside of the sieve seat (2), the other end of the exhaust pipe (7) is fixedly connected to a housing (15), an exhaust motor (19) is provided in the middle of the housing (15), a water pump (16) is fixedly connected to the inside of the housing (15), and the output end of the water pump (16) is fixedly connected to a water pipe (17). ), the other end of the water pipe (17) is fixedly connected to an annular watering ring (18), the middle of the air extraction pipe (7) is fixedly connected to a filter plate (8), the middle of the air extraction pipe (7) is fixedly connected to a collar (9), the middle of the collar (9) is rotatably connected to an impeller (10), the side of the impeller (10) close to the filter plate (8) is fixedly connected to a connecting rod (11), the connecting rod (11) is rotatably connected to the middle of the filter plate (8), the outer periphery of the connecting rod (11) is fixedly connected to a fixed block (12), a scraper (13) is provided inside the fixed block (12), and an elastic component is fixedly connected inside the fixed block (12).

2. A cement fineness negative pressure sieve analyzer according to claim 1, characterized in that: The elastic component comprises a compression spring 1 (14), wherein the compression spring 1 (14) is fixedly connected to the interior of the fixed block (12), and the other end of the compression spring 1 (14) is fixedly connected to a side of the scraper (13) close to the fixed block (12).

3. A cement fineness negative pressure sieve analyzer according to claim 2, characterized in that: The housing (15) is slidably connected to a filter box (20), the outside of the filter box (20) is fixedly connected to a fixing plate (21), the inside of the fixing plate (21) is fixedly connected to a second compression spring (22), the other end of the second compression spring (22) is fixedly connected to a clamping block (23), a clamping slot (24) is provided in the middle of the housing (15), the clamping block (23) and the clamping slot (24) are plug-fitted, and a disassembly component is rotatably connected to the middle of the fixing plate (21).

4. A cement fineness negative pressure sieve analyzer according to claim 3, characterized in that: The disassembly assembly comprises a rotating rod (25), the rotating rod (25) being rotatably connected to the middle part of the fixed plate (21), a pull rope (26) being fixedly connected to the outer side of the rotating rod (25), and the other end of the pull rope (26) being fixedly connected to a side of the clamping block (23) close to the second compression spring (22).

5. A cement fineness negative pressure sieve analyzer according to claim 4, characterized in that: A filter screen (28) is fixedly connected to the outer side of the housing (1).

6. A cement fineness negative pressure sieve analyzer according to claim 5, characterized in that: A positioning groove (27) is provided in the middle of the housing (15), and the fixing plate (21) is slidably connected to the middle of the positioning groove (27).

7. A cement fineness negative pressure sieve analyzer according to claim 6, characterized in that: One end of the rotating rod (25) away from the fixing plate (21) is fixedly connected to a handle, and an anti-slip groove is provided on the outer side of the handle.

8. A cement fineness negative pressure sieve analyzer according to claim 7, characterized in that: A partition is slidably connected inside the fixed plate (21), and the partition is fixedly connected between the second compression spring (22) and the clamping block (23).

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