Negative pressure sieve analyzer

Abstract

The present application discloses a negative pressure sieve analyzer, and relates to the technical field of fineness detection equipment. The present application includes a machine body, a control panel is fixedly connected to one side of the machine body, a sieve seat is fixedly connected to the top of the machine body, an analysis sieve is overlapped on the top of the sieve seat, a cover plate is overlapped on the top of the analysis sieve, a box door is hinged on one side of the machine body, an oscillation mechanism is arranged on the top of the machine body, and a fixing mechanism is arranged on the top of the sieve seat. When the cover plate is oscillated, the driving motor is first started through the control panel, the driving motor rotates to drive the driving rod to rotate, the driving rod rotates to drive the striking block to rotate, the striking block rotates to drive the resistance block to rotate, the resistance block rotates to resist the cover plate, and the cover plate oscillates, so that the sample at the bottom of the cover plate falls into the analysis sieve, reducing the work intensity of the operator, and the cover plate is fixed by moving the fixing block downward to reduce the risk of sample drifting.

Description

Technical Field

[0001] The present application relates to the technical field of fineness detection equipment, and in particular to a negative pressure sieving instrument. Background Art

[0002] Negative pressure sieve analyzer is an instrument used to test the fineness of Portland cement, ordinary Portland cement, slag Portland cement, fly ash Portland cement and composite Portland cement. The negative pressure sieve analyzer is mainly composed of an analysis sieve, a vacuum cleaner, a cyclone and a box, and can be used to screen particles of various sizes and shapes.

[0003] When testing the sample, place the analysis sieve on the sieve seat, cover the sieve cover and turn on the power, check the control system, adjust the negative pressure to the range of 4000Pa~6000Pa, then weigh 10g of the sample, place it in a clean analysis sieve, cover the sieve cover, place it on the sieve seat, start the sieving instrument for continuous sieving for 3 minutes. During this period, if there is a sample attached to the sieve cover, it can be gently tapped with a wooden stick or rubber stick to make the sample fall, and finally the sieve residue is accurately weighed with a balance.

[0004] When testing samples, the samples may adhere to the bottom of the box cover, and the operator may need to constantly hold a wooden stick or a glue stick to knock on the outer wall of the top of the sieve cover, so as to knock off the samples adhered to the inner wall of the sieve cover to maintain the screening effect. However, during screening, the operator may need to hold the wooden stick or the glue stick for a long time, which increases the work intensity of the operator and is inconvenient to use. Utility Model Content

[0005] The purpose of the present application is to provide a negative pressure sieving instrument to solve the problem that workers may need to hold a wooden stick or a glue stick for a long time during screening, thereby increasing the work intensity of the workers.

[0006] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions:

[0007] A negative pressure sieve analyzer comprises a body, a control panel is fixedly connected to one side of the body, a sieve seat is fixedly connected to the top of the body, an analysis sieve is overlapped on the top of the sieve seat, a cover plate is overlapped on the top of the analysis sieve, a box door is hinged on one side of the body, an oscillation mechanism is arranged on the top of the body, and a fixing mechanism is arranged on the top of the sieve seat.

[0008] By adopting the above technical solution, the analysis sieve is placed on the sieve seat, and then the cover is placed on the analysis sieve, and then the power is started, and then 10g of the sample is weighed and placed in a clean analysis sieve, and the sieve cover is covered, and finally the sieving instrument is started for sieving, thereby completing the test of the sample. After long-term use, the staff can open the box door to clean the dust collection device inside the body, and the cover can be automatically struck and shaken by the shaking mechanism to reduce the labor intensity of the staff. The cover can be fixed by the fixing mechanism to reduce the risk of displacement of the cover during the shaking process.

[0009] Furthermore, the oscillation mechanism includes a vertical plate fixedly connected to the top of the body, a side of the vertical plate away from the screen seat is fixedly connected to a mounting seat, the top of the mounting seat is fixedly connected to a driving motor, the driving motor is electrically connected to the control panel, the output end of the driving motor passes through the vertical plate and is fixedly connected to a driving rod, the output end of the driving motor is rotatably connected to the vertical plate, the end of the driving rod away from the vertical plate is fixedly connected to a striking block, and the inside of the striking block is slidably connected to a resistance block.

[0010] By adopting the above technical solution, the driving motor is started through the control panel, and the rotation of the driving motor drives the driving rod to rotate, and the rotation of the driving rod drives the striking block to rotate, and the rotation of the striking block drives the resistance block to rotate, and the rotation of the resistance block will resist the cover plate, causing the cover plate to vibrate, so that the sample at the bottom of the cover plate falls into the analysis sieve. The time and energy required for manual operation can be reduced by automatically vibrating the cover plate.

[0011] Furthermore, a sliding groove is provided inside the striking block, the sliding groove is slidably connected to the resistance block, the end of the resistance block away from the striking block is arranged in an arc shape, a spring 1 is arranged inside the sliding groove, one end of the spring 1 is fixedly connected to the inner wall of the sliding groove, and the other end of the spring 1 is fixedly connected to the resistance block.

[0012] By adopting the above technical solution, it is convenient for the resistance block to slide inside the sliding groove, and it is convenient to strike and vibrate the cover plate.

[0013] Furthermore, a reinforcement plate is fixedly connected to one side of the vertical plate, an end of the reinforcement plate away from the vertical plate is fixedly connected to the top of the machine body, and the reinforcement plate is arranged in an inclined shape.

[0014] By adopting the above technical solution, the stability of the entire oscillation structure is improved.

[0015] Furthermore, the fixing mechanism includes a fixing box fixedly connected to both sides of the top of the sieve seat, the interior of the fixing box is slidably connected to a sliding plate, the top of the sliding plate is rotatably connected to a connecting column, and the bottom end of the connecting column is fixedly connected to a fixing block.

[0016] By adopting the above technical solution, the cover plate is fixed by pulling the connecting column above the cover plate.

[0017] Furthermore, an elastic member is fixedly connected to the inner bottom wall of the fixed box, the elastic member is composed of a telescopic rod and a spring, and the top of the elastic member is fixedly connected to the sliding plate.

[0018] By adopting the above technical solution, the fixing block is forced downward to resist and fix the cover plate through the elastic potential energy of the second spring.

[0019] Furthermore, a friction pad is fixedly connected to the bottom end of the fixing block, and engaging grooves are provided on both sides of the top of the cover plate, and the fixing block, the friction pad and the engaging grooves are slidably arranged.

[0020] By adopting the above technical solution, the risk of displacement of the cover during operation is reduced.

[0021] Furthermore, sliding grooves are provided on the inner walls of both sides of the fixed box, and sliding blocks are fixedly connected to both sides of the sliding plate, and the sliding blocks are slidably connected to the sliding grooves.

[0022] By adopting the above technical solution, the slider and the slide groove provide a guiding function for the sliding plate, so that the sliding plate maintains a correct motion trajectory when moving.

[0023] In summary, the present application includes at least one of the following beneficial effects:

[0024] 1. In the present application, when the sample adheres to the bottom of the cover, the driving motor drives the resistance block to hit the cover, so that the sample at the bottom of the cover falls into the analysis sieve. The automated oscillating cover can reduce the time and effort required for manual operation, complete the sample screening process faster, reduce the operator's workload, and improve work efficiency and comfort.

[0025] 2. In the present application, when fixing the cover plate, the staff first fixes the cover plate through a fixing block. Fixing the cover plate can ensure that the cover plate is always in the correct position during the screening process, reducing the risk of sample drifting out due to movement of the cover plate, thereby ensuring the accuracy and reliability of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the first three-dimensional structure of the negative pressure analyzer in this application;

[0027] Figure 2 It is a schematic diagram of the three-dimensional structure of the negative pressure analyzer in this application;

[0028] Figure 3 It is a schematic diagram of the cross-sectional structure of the negative pressure analyzer in this application;

[0029] Figure 4 This application Figure 3 The enlarged structural diagram at A in the middle;

[0030] Figure 5 This application Figure 3 Enlarged structural diagram at B in the middle.

[0031] Description of reference numerals:

[0032] 1. Machine body; 2. Control panel; 3. Sieve seat; 4. Analytical sieve; 5. Cover plate; 6. Box door; 7. Vertical plate; 8. Mounting seat; 9. Driving motor; 10. Driving rod; 11. Strike block; 12. Slide groove; 13. Resistance block; 14. Spring; 15. Reinforcement plate; 16. Fixed box; 17. Elastic part; 18. Slide plate; 19. Connecting column; 20. Fixed block; 21. Friction pad; 22. Slide groove. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-5 This application is described in further detail.

[0034] The embodiment of the present application discloses a negative pressure sieve analyzer.

[0035] Reference Figures 1 to 3 A negative pressure sieve analyzer comprises a body 1, a control panel 2 is fixedly connected to one side of the body 1, a sieve seat 3 is fixedly connected to the top of the body 1, an analysis sieve 4 is overlapped on the top of the sieve seat 3, a cover plate 5 is overlapped on the top of the analysis sieve 4, a box door 6 is hinged on one side of the body 1, an oscillation mechanism is arranged on the top of the body 1, and a fixing mechanism is arranged on the top of the sieve seat 3.

[0036] When testing the sample, first place the analysis sieve 4 on the sieve seat 3, then place the cover plate 5 on the analysis sieve 4, then start the power supply, then weigh 10g of the sample, place it in the clean analysis sieve 4, cover the sieve cover, and finally start the sieving instrument for sieving, thereby completing the test of the sample. After long-term use, the staff can open the box door 6 to clean the dust collection device inside the body 1. The cover plate 5 can be automatically struck and shaken by the shaking mechanism to reduce the risk of the sample adhering to the bottom of the cover plate 5. The cover plate 5 can be fixed by the fixing mechanism to reduce the risk of displacement of the cover plate 5 during the shaking process.

[0037] Reference Figures 2 to 4The oscillation mechanism includes a vertical plate 7 fixedly connected to the top of the body 1, a side of the vertical plate 7 away from the screen seat 3 is fixedly connected to a mounting seat 8, a top of the mounting seat 8 is fixedly connected to a driving motor 9, the driving motor 9 is electrically connected to the control panel 2, the output end of the driving motor 9 passes through the vertical plate 7 and is fixedly connected to a driving rod 10, the output end of the driving motor 9 is rotatably connected to the vertical plate 7, the end of the driving rod 10 away from the vertical plate 7 is fixedly connected to a striking block 11, and the inside of the striking block 11 is slidably connected to a resistance block 13.

[0038] Among them, a sliding groove 12 is opened inside the striking block 11, and the sliding groove 12 is slidably connected to the resistance block 13. The end of the resistance block 13 away from the striking block 11 is set in an arc shape. A spring 14 is set inside the sliding groove 12, one end of the spring 14 is fixedly connected to the inner wall of the sliding groove 12, and the other end of the spring 14 is fixedly connected to the resistance block 13.

[0039] In addition, a reinforcing plate 15 is fixedly connected to one side of the vertical plate 7 , and one end of the reinforcing plate 15 away from the vertical plate 7 is fixedly connected to the top of the machine body 1 , and the reinforcing plate 15 is arranged in an inclined shape.

[0040] When the cover plate 5 is vibrated, the driving motor 9 is first started through the control panel 2. The driving motor 9 rotates to drive the driving rod 10 to rotate. The driving rod 10 rotates to drive the striking block 11 to rotate. The striking block 11 rotates to drive the resistance block 13 to rotate. The resistance block 13 rotates to resist the cover plate 5, so that the cover plate 5 vibrates, so that the sample at the bottom of the cover plate 5 falls into the analysis sieve 4. The automatic vibration of the cover plate 5 can reduce the time and energy required for manual operation, and the screening process of the sample can be completed more quickly, reducing the operator's work. The working strength is improved, and the working efficiency and comfort are improved. When the resistance block 13 resists the cover plate 5, the resistance block 13 is slidably connected with the striking block 11, so that the resistance block 13 slides inside the striking block 11. The movement of the resistance block 13 will squeeze the spring 14, causing the spring 14 to contract and generate elastic potential energy. When the resistance block 13 is away from the cover plate 5, the elastic potential energy of the spring 14 is released, so that the resistance block 13 is reset, which is convenient for the next shock to the cover plate 5. When the driving motor 9 is working, the stability of the vertical plate 7 can be improved by the reinforcement plate 15.

[0041] Reference Figure 3 and Figure 5 The fixing mechanism includes a fixing box 16 fixedly connected to both sides of the top of the sieve seat 3, a sliding plate 18 is slidably connected inside the fixing box 16, a connecting column 19 is rotatably connected to the top of the sliding plate 18, and a fixing block 20 is fixedly connected to the bottom end of the connecting column 19.

[0042] The inner bottom wall of the fixed box 16 is fixedly connected with an elastic member 17 , the elastic member 17 is composed of a telescopic rod and a spring, and the top of the elastic member 17 is fixedly connected with the sliding plate 18 .

[0043] In addition, the bottom end of the fixing block 20 is fixedly connected with a friction pad 21 , and both sides of the top of the cover plate 5 are provided with engaging grooves, and the fixing block 20 and the friction pad 21 are slidably arranged in the engaging grooves.

[0044] In addition, sliding grooves 22 are formed on the inner walls of both sides of the fixed box 16 , and sliding blocks are fixedly connected to both sides of the sliding plate 18 , and the sliding blocks are slidably connected to the sliding grooves 22 .

[0045] When fixing the cover plate 5, the staff first pulls the connecting column 19, and the connecting column 19 drives the fixing block 20 and the sliding plate 18 to move upward. The sliding plate 18 moves upward to drive the elastic member 17 to stretch, so that the spring 2 stretches to generate elastic potential energy. When it reaches a certain height, the connecting column 19 and the sliding plate 18 are rotatably connected, so that the fixing block 20 rotates to the top of the cover plate 5. At this time, the staff loosens the connecting column 19, and the elastic potential energy of the spring 2 is released, so that the fixing block 20 moves downward to resist and fix the cover plate 5. Fixing the cover plate 5 can ensure that the cover plate 5 is always in the screening process. The cover plate 5 is fixed in the correct position, reducing the risk of sample drifting out due to the movement of the cover plate 5, thereby ensuring the accuracy and reliability of the test results. When the fixing block 20 fixes the cover plate 5, the fixing block 20 enters the engaging groove to complete the limit of the cover plate 5. The friction pad 21 is made of metal, and the bottom end of the friction pad 21 is set to a rough metal surface, which can increase the friction between the fixing block 20 and the cover plate 5, further improving the fixing effect of the fixing block 20. The sliding groove 22 and the slider provide a guiding effect for the sliding plate 18, so that the sliding plate 18 maintains the correct trajectory when moving.

[0046] Working principle: place the analysis sieve 4 on the sieve seat 3, then place the cover plate 5 on the analysis sieve 4, then start the power supply, then weigh 10g of the sample, place it in the clean analysis sieve 4, cover the sieve cover, and finally start the sieving instrument for sieving, thereby completing the test of the sample. After long-term use, the staff can open the box door 6 to clean the dust collection device inside the body 1, and start the drive motor 9 through the control panel 2. The rotation of the drive motor 9 drives the drive rod 10 to rotate, and the rotation of the drive rod 10 drives the striking block 11 to rotate. The rotation of the striking block 11 will drive the resistance block 13 to rotate, and the rotation of the resistance block 13 will resist the cover plate 5, causing the cover plate 5 to vibrate, so that the sample at the bottom of the cover plate 5 falls into the analysis sieve 4. The automatic vibration of the cover plate 5 can reduce the time and energy required for manual operation.

[0047] The staff pulls the connecting column 19, and the connecting column 19 drives the fixed block 20 and the sliding plate 18 to move upward. The sliding plate 18 moves upward and drives the elastic member 17 to stretch, so that the spring 2 is stretched to generate elastic potential energy. When it reaches a certain height, the connecting column 19 and the sliding plate 18 are rotatably connected, so that the fixed block 20 is rotated to the top of the cover plate 5. At this time, the staff releases the connecting column 19, and the elastic potential energy of the spring 2 is released, so that the fixed block 20 moves downward to resist and fix the cover plate 5.

Claims

1. A negative pressure sieve analyzer, comprising a body (1), characterized in that: A control panel (2) is fixedly connected to one side of the machine body (1), a sieve seat (3) is fixedly connected to the top of the machine body (1), an analysis sieve (4) is overlapped on the top of the sieve seat (3), a cover plate (5) is overlapped on the top of the analysis sieve (4), a box door (6) is hingedly connected to one side of the machine body (1), an oscillation mechanism is arranged on the top of the machine body (1), and a fixing mechanism is arranged on the top of the sieve seat (3).

2. A negative pressure sieve analyzer according to claim 1, characterized in that: The oscillating mechanism comprises a vertical plate (7) fixedly connected to the top of the machine body (1); a side of the vertical plate (7) away from the sieve seat (3) is fixedly connected to a mounting seat (8); a top of the mounting seat (8) is fixedly connected to a driving motor (9); the driving motor (9) is electrically connected to the control panel (2); an output end of the driving motor (9) passes through the vertical plate (7) and is fixedly connected to a driving rod (10); the output end of the driving motor (9) is rotatably connected to the vertical plate (7); an end of the driving rod (10) away from the vertical plate (7) is fixedly connected to a striking block (11); and a resisting block (13) is slidably connected inside the striking block (11).

3. A negative pressure sieve analyzer according to claim 2, characterized in that: A sliding groove (12) is provided inside the striking block (11), and the sliding groove (12) is slidably connected to the resistance block (13). One end of the resistance block (13) away from the striking block (11) is arranged in an arc shape. A spring (14) is provided inside the sliding groove (12), and one end of the spring (14) is fixedly connected to the inner wall of the sliding groove (12), and the other end of the spring (14) is fixedly connected to the resistance block (13).

4. A negative pressure sieve analyzer according to claim 2, characterized in that: A reinforcing plate (15) is fixedly connected to one side of the vertical plate (7), and one end of the reinforcing plate (15) away from the vertical plate (7) is fixedly connected to the top of the machine body (1), and the reinforcing plate (15) is arranged in an inclined shape.

5. A negative pressure sieve analyzer according to claim 1, characterized in that: The fixing mechanism comprises a fixing box (16) fixedly connected to both sides of the top of the sieve seat (3), a sliding plate (18) being slidably connected inside the fixing box (16), a connecting column (19) being rotatably connected to the top of the sliding plate (18), and a fixing block (20) being fixedly connected to the bottom end of the connecting column (19).

6. A negative pressure sieve analyzer according to claim 5, characterized in that: An elastic member (17) is fixedly connected to the inner bottom wall of the fixed box (16), the elastic member (17) being composed of a telescopic rod and a spring, and the top of the elastic member (17) is fixedly connected to the sliding plate (18).

7. A negative pressure sieve analyzer according to claim 5, characterized in that: The bottom end of the fixed block (20) is fixedly connected to a friction pad (21), and snap-fit ​​grooves are provided on both sides of the top of the cover plate (5), and the fixed block (20) and the friction pad (21) are slidably arranged in the snap-fit ​​grooves.

8. A negative pressure sieve analyzer according to claim 5, characterized in that: Slide grooves (22) are provided on the inner walls of both sides of the fixed box (16), and sliding blocks are fixedly connected to both sides of the sliding plate (18), and the sliding blocks are slidably connected to the slide grooves (22).

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