Negative pressure screen analysis instrument
By designing an inclined movable mounting and driving mechanism in the negative pressure screen analyzer, the problem of powder remaining at the edge of the screen under the action of airflow is solved, achieving higher screening accuracy and detection accuracy.
Patent Information
- Application Number
- CN202422130751.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-08-30
AI Technical Summary
Under the action of the airflow, some of the powder remains at the edge of the screen and cannot move back and forth with the airflow, resulting in inaccurate detection results.
A negative pressure screen analyzer is designed, using a mounting base and a driving mechanism that can move freely inclined. By driving the mounting base, the analysis screen moves up and down during the screening process to avoid powder accumulation on the edge of the analysis screen.
Through the tilting movement of the mount, the powder material can move to the middle of the analysis screen, avoiding accumulation, and improving the accuracy of the screening and detection accuracy.
Smart Images
Figure CN223021850U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of detection equipment, and in particular to a negative pressure screening instrument. Background Art
[0002] At present, the fineness of cement fineness is determined by negative pressure sieve analyzer (GB / T 1345-2005), which uses airflow as the motive medium for screening. The whole system maintains a negative pressure state during operation. The powder material to be tested in the sieve moves with the airflow under the action of the airflow ejected from the rotating air nozzle. The fine particles with a particle size smaller than the sieve aperture remain in the test sieve, thereby achieving the purpose of screening. However, in the actual operation, as the negative pressure is turned on, under the action of the airflow, part of the powder remains on the edge of the sieve and cannot move back and forth with the airflow, resulting in differences in the results. Utility Model Content
[0003] In order to solve the problem in the prior art that part of the powder inside the existing sieve is retained on the edge of the sieve under the action of the airflow and cannot move back and forth with the airflow, resulting in inaccurate detection results, the present application provides a negative pressure sieve.
[0004] A negative pressure sieve analyzer provided in the present application adopts the following technical solution: a negative pressure sieve analyzer, comprising a box and an analysis sieve, an analysis sieve mounting mechanism for mounting the analysis sieve is arranged above the box, the analysis sieve mounting mechanism comprises a mounting seat obliquely arranged in the middle of the upper surface of the box, a set gap is set between the mounting seat and the box, a driving mechanism is arranged on one side of the upper surface of the box, the driving mechanism is transmission-connected with the mounting seat, and the driving mechanism drives the mounting seat to rise and fall and tilt in different directions.
[0005] By adopting the above technical solution, the analysis sieve is installed inside the mounting seat, and the driving mechanism drives the mounting seat to rise and fall and tilt in different directions during the screening process, so that the powder material at the edge of the analysis sieve moves to the middle of the analysis sieve, avoiding the accumulation of powder at the edge of the analysis sieve and improving the screening accuracy.
[0006] Optionally, the mounting seat is hollow inside, a spherical portion is provided at the bottom of the mounting seat, the mounting seat is connected to the box body via the spherical portion, a fixing seat is provided below the mounting seat, a suction nozzle is fixedly provided in the middle of the fixing seat, the fixing seat extends upward to the middle of the spherical portion and is movably connected to the bottom of the mounting seat.
[0007] By adopting the above technical solution, the bottom of the mounting seat is connected to the box body through the spherical part, so that the mounting seat can be tilted along the circumferential height fluctuation on the box body, and the fixed seat is movably connected to the spherical part, so that the fixed seat and the mounting seat are always connected when the mounting seat moves, thereby improving the screening effect.
[0008] Optionally, a return spring is arranged between the mounting seat and the fixed seat.
[0009] By adopting the above technical solution, the return spring applies an elastic force to the mounting seat, thereby ensuring that the mounting seat is always in an inclined state.
[0010] Optionally, a cyclone and a dust collector are arranged inside the box body. The air inlet of the dust collector is connected to the air outlet of the cyclone through a pipeline, and the air inlet of the cyclone is connected to the suction nozzle through a pipeline.
[0011] By adopting the above technical solution, the air discharged outward by the dust collector forms a negative pressure inside the cyclone, so that the air in the analysis sieve enters the cyclone, and the powder is subjected to cyclone separation in the cyclone, thereby realizing the screening and collection of the powder.
[0012] Optionally, a sealing gasket and a sealing ring are arranged at the connection between the inside of the mounting seat and the analysis sieve.
[0013] By adopting the above technical solution, the sealing gasket and the sealing ring are used to improve the sealing performance between the analysis sieve and the mounting seat.
[0014] Optionally, the driving mechanism includes a rotating ring sleeved outside the mounting seat. The rotating ring is rotatably arranged on the upper surface of the box body around the mounting seat. A connecting block is arranged inside the rotating ring, and a ball head is connected to the connecting block. A flange extends outward from the upper end edge of the mounting seat, and an arc-shaped ring groove is arranged on the bottom surface of the flange. The ball head is movably arranged inside the arc-shaped ring groove, and the ball head jacks up one side of the mounting seat through the arc-shaped ring groove.
[0015] By adopting the above technical solution, during the screening process, the rotating ring drives the ball head to rotate around the mounting seat. The movement of the ball head causes one side of the mounting seat to be jacked up, making the mounting seat inclined, so that the analysis sieve moves up and down and is inclined during the screening process, preventing the powder from accumulating at the edge of the analysis sieve.
[0016] Optionally, a driving motor is arranged on one side above the box body. Teeth are arranged along the circumference on the outside of the rotating ring, and a driving gear is arranged on the output shaft of the driving motor. The driving gear meshes with the teeth.
[0017] By adopting the above technical solution, the driving motor drives the rotating ring to rotate continuously and stably through the driving gear.
[0018] Optionally, a ball shaft is movably connected in the middle of the connecting block. A screw rod is connected below the ball head. The screw rod penetrates through the ball shaft, and adjusting nuts are arranged above and below the ball shaft and are threadedly connected to the screw rod.
[0019] By adopting the above technical solution, the length of the screw rod extending out of the ball shaft can be adjusted by rotating the adjusting nut, so as to realize the adjustment of the jacking height of the mounting seat and meet the requirements of different screening operations.
[0020] In summary, the present application includes at least one of the following beneficial technical effects:
[0021] In the present application, a mounting seat capable of freely tilting is arranged above the box body, and a driving mechanism for driving the mounting seat to rise and fall and tilt is arranged on one side of the mounting seat. The mounting seat drives the analysis sieve to move up and down and tilt in different directions during the screening process, so that the powder at the edge of the analysis sieve moves to the middle position of the analysis sieve, avoiding the situation of powder accumulation at the edge of the analysis sieve, improving the screening effect and the detection accuracy. Description of the Drawings
[0022] Figure 1 It is a front view structural schematic diagram of a negative pressure sieving instrument in an embodiment of the present application.
[0023] Figure 2 It is a top view structural schematic diagram of a negative pressure sieving instrument in an embodiment of the present application.
[0024] Figure 3 It is an internal structural schematic diagram of a negative pressure sieving instrument in an embodiment of the present application.
[0025] Figure 4 It is a negative pressure sieving instrument in an embodiment of the present application Figure 3 Partial enlarged schematic diagram of A.
[0026] Figure 5 It is a top view structural schematic diagram of a sieve base of a negative pressure sieving instrument in an embodiment of the present application.
[0027] Figure 6 It is a structural schematic diagram of a rotating seat of a negative pressure sieving instrument in an embodiment of the present application.
[0028] Description of the reference numerals: 1, box body; 2, analysis sieve; 3, analysis sieve mounting mechanism; 31, mounting seat; 32, arc-shaped annular groove; 33, spherical part; 34, fixed seat; 35, return spring; 36, suction nozzle; 4, driving mechanism; 41, rotating ring; 42, annular guide rail; 43, driving gear; 44, driving motor; 45, ball head; 46, connecting block; 47, ball shaft; 48, screw rod; 49, adjusting nut; 410, tooth; 5, cyclone; 6, vacuum cleaner. Detailed Embodiments
[0029] The following specific embodiments illustrate the implementation manners of the present application. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification.
[0030] Please refer to Figures 1-6 It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to match the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions that can be implemented in this application. Therefore, they do not have substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the efficacy that this application can produce and the purpose that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in this application. At the same time, the terms such as "upper", "lower", "left", "right", "middle", and "one" cited in this specification are only for the convenience of clear narration and are not used to limit the scope that can be implemented in this application. The change or adjustment of their relative relationship, without substantial change in the technical content, should also be regarded as the scope that can be implemented in this application.
[0031] The following will further elaborate on this application in conjunction with the attached Figures 1-6 drawings.
[0032] This embodiment discloses a negative pressure sieve analyzer.
[0033] Referring to Figure 1 and Figure 2 , a negative pressure sieve analyzer includes a box body 1 and an analytical sieve 2, and an analytical sieve installation mechanism 3 for installing the analytical sieve 2 is arranged above the box body 1.
[0034] Referring to Figure 3 and Figure 4 , the analytical sieve installation mechanism 3 includes a mounting seat 31. An opening for arranging the mounting seat 31 is provided on the upper surface of the box body 1. A spherical part 33 is arranged at the bottom of the mounting seat 31. A connecting part matched with the spherical part 33 is arranged inside the box body 1. The spherical part 33 and the connecting part are closely matched to play a certain sealing role. The mounting seat 31 can move arbitrarily up and down on the box body 1 through the spherical part 33. The inside of the mounting seat 31 is hollow and protrusions for limiting the analytical sieve 2 are arranged on the inner wall. A sealing gasket and a sealing ring are arranged between the analytical sieve 2 and the inner wall of the mounting seat 31. A fixing seat 34 is arranged below the mounting seat 31. The fixing seat 34 extends upward into the mounting seat 31 and the end is spherical. A suction nozzle 36 is arranged inside the fixing seat 34. A cyclone cylinder 5 and a vacuum cleaner 6 are arranged inside the box body 1. The air inlet of the vacuum cleaner 6 is connected to the air outlet of the cyclone cylinder 5 through a pipeline. The air inlet of the cyclone cylinder 5 is connected to the suction nozzle 36 through a pipeline. The fixing seat 34 is movably connected with the mounting seat 31. When the mounting seat 31 moves, the fixing seat 34 is always connected with the mounting seat 31. A return spring 35 is arranged between the mounting seat 31 and the fixing seat 34. Both ends of the return spring 35 are fixedly connected with the mounting seat 31 and the fixing seat 34.
[0035] Referring to Figure 5 and Figure 6, on one side of the upper surface of the box body 1, a driving mechanism 4 is provided to drive the mounting seat 31 to move up and down around the connection with the box body 1. The driving mechanism 4 includes a rotating ring 41 sleeved outside the mounting seat 31. The rotating ring 41 is rotatably arranged on the upper surface of the box body 1 around the mounting seat 31. The rotating ring 41 is slidably connected to the box body 1 through an annular guide rail 42. A connecting block 46 is arranged inside the rotating ring 41. A ball head 45 is connected to the connecting block 46. A ball shaft 47 is movably connected to the middle of the connecting block 46. A screw rod 48 is connected below the ball head 45. The screw rod 48 penetrates through the ball shaft 47. Adjusting nuts 49 threadedly connected to the screw rod 48 are arranged above and below the ball shaft 47. The upper end edge of the mounting seat 31 extends outward to form a flange. An arc-shaped ring groove 32 is arranged on the bottom surface of the flange. The ball head 45 is movably arranged inside the arc-shaped ring groove 32. The ball head 45 jacks up one side of the mounting seat 31 through the arc-shaped ring groove 32. A driving motor 44 is arranged on one side above the box body 1. Teeth 410 are arranged on the outer side of the rotating ring 41 along the circumference. A driving gear 43 is arranged on the output shaft of the driving motor 44. The driving gear 43 meshes with the teeth 410.
[0036] In this embodiment, the implementation principle of a negative pressure sieving instrument is as follows:
[0037] When performing the sieving operation, the powder is placed in the analysis sieve 2. The analysis sieve 2 is installed in the middle of the mounting seat 31. The sealing washer and the sealing ring seal the gap between the analysis sieve 2 and the mounting seat 31. The vacuum cleaner 6 is started. The air discharged by the vacuum cleaner 6 generates negative pressure inside the cyclone cylinder 5. Under the action of the negative pressure, the finer powder in the analysis sieve 2 passes through the analysis sieve 2 and enters the cyclone cylinder 5 to achieve screening and separation. During the sieving process, the driving motor 44 drives the rotating ring 41 to rotate uniformly through the driving gear 43. The rotating ring 41 drives the connecting block 46 and the ball head 45 to move. The ball head 45 moves along the arc-shaped ring groove 32 on the bottom surface of the flange of the mounting seat 31. The ball head 45 jacks up one side of the mounting seat 31. The other side of the mounting seat 31 moves downward under the elastic force of the return spring 35, so that the mounting seat 31 is in an inclined state. When the ball head 45 moves around the mounting seat 31 driven by the rotating ring 41, it drives the mounting seat 31 to move up and down and tilt in different directions, so that the analysis sieve 2 continuously moves up and down and tilts during the sieving process. The powder at the edge of the analysis sieve 2 flows to the middle position of the analysis sieve 2, preventing the powder from accumulating at the edge of the analysis sieve 2 and resulting in poor sieving effect.
[0038] In summary, in this application, a mounting seat capable of freely tilting and moving is arranged above the box body. A driving mechanism for driving the mounting seat to move up and down and tilt is arranged on one side of the mounting seat. The analysis sieve is driven by the mounting seat to move up and down and tilt in different directions during the sieving process, so that the powder at the edge of the analysis sieve moves to the middle position of the analysis sieve, avoiding the situation of powder accumulation at the edge of the analysis sieve, improving the sieving effect, and improving the detection accuracy. Therefore, this application effectively overcomes various shortcomings in the prior art and has high industrial utilization value.
[0039] The above embodiments are only illustrative of the principles and effects of the present application, and are not intended to limit the present application. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed in the present application should still be covered by the protection scope of the present application.
Claims
1. A negative pressure sieve analyzer, comprising a housing (1) and an analysis sieve (2), wherein an analysis sieve mounting mechanism (3) for mounting the analysis sieve (2) is arranged above the housing (1), characterized in that: The analytical sieve mounting mechanism (3) comprises a mounting seat (31) which is arranged obliquely in the middle of the upper surface of the box body (1), a gap being set between the mounting seat (31) and the box body (1), a driving mechanism (4) being arranged on one side of the upper surface of the box body (1), the driving mechanism (4) being in driving connection with the mounting seat (31), and the driving mechanism (4) driving the mounting seat (31) to rise and fall and to tilt in different directions.
2. A negative pressure sieve analyzer according to claim 1, characterized in that: The interior of the mounting seat (31) is hollow, a spherical portion (33) is provided at the bottom of the mounting seat (31), the mounting seat (31) is connected to the box body (1) via the spherical portion (33), a fixing seat (34) is provided below the mounting seat (31), a suction nozzle (36) is fixedly provided in the middle of the fixing seat (34), and the fixing seat (34) extends upward to the middle of the spherical portion (33) and is movably connected to the bottom of the mounting seat (31).
3. A negative pressure sieve analyzer according to claim 2, characterized in that: A return spring (35) is provided between the mounting seat (31) and the fixing seat (34).
4. A negative pressure sieve analyzer according to claim 2, characterized in that: A cyclone (5) and a vacuum cleaner (6) are arranged inside the box (1); an air inlet of the vacuum cleaner (6) is connected to an air outlet of the cyclone (5) via a pipeline, and an air inlet of the cyclone (5) is connected to the suction nozzle (36) via a pipeline.
5. A negative pressure sieve analyzer according to claim 1, characterized in that: A sealing gasket and a sealing ring are provided at the connection between the inside of the mounting seat (31) and the analysis sieve (2).
6. A negative pressure sieve analyzer according to claim 1, characterized in that: The driving mechanism (4) comprises a rotating ring (41) sleeved on the outside of the mounting seat (31); the rotating ring (41) is rotatably arranged around the mounting seat (31) on the upper surface of the box body (1); a connecting block (46) is arranged on the inside of the rotating ring (41); a ball head (45) is connected to the connecting block (46); an upper end edge of the mounting seat (31) extends outward to form a flange; an arc-shaped annular groove (32) is arranged on the bottom surface of the flange; the ball head (45) is movably arranged inside the arc-shaped annular groove (32); and the ball head (45) lifts one side of the mounting seat (31) upward through the arc-shaped annular groove (32).
7. A negative pressure sieve analyzer according to claim 6, characterized in that: A driving motor (44) is arranged on one side above the box body (1); teeth (410) are arranged circumferentially on the outer side of the rotating ring (41); a driving gear (43) is arranged on the output shaft of the driving motor (44); and the driving gear (43) is meshed with the teeth (410).
8. A negative pressure sieve analyzer according to claim 6, characterized in that: A ball shaft (47) is movably connected in the middle of the connecting block (46), a screw rod (48) is connected below the ball head (45), the screw rod (48) passes through the ball shaft (47), and adjustment nuts (49) threadedly connected to the screw rod (48) are arranged above and below the ball shaft (47).