Negative pressure screen analysis equipment for cement fineness detection

Abstract

The utility model belongs to the technical field of cement fineness detection, and particularly relates to negative pressure screen analysis equipment for cement fineness detection, which comprises a body, a screen frame and a support ring, a suction inlet is arranged on the surface of the body and used for placing the screen frame, the support ring is fixedly connected in the suction inlet, the screen frame is placed on the support ring, and the support ring is fixedly connected with the suction inlet. A sealing mechanism is arranged on the supporting ring, the sealing mechanism comprises a gas storage block and an expansion block, the gas storage block and the expansion block are hollow, gas enters the expansion block, the expansion block is pressed to expand to block a gap between the screen frame and the suction inlet, and then the situation that the accuracy of screen analysis equipment is affected due to the gas leakage situation is avoided; and meanwhile, the groove can be protected through the elastic film, and cement particles are prevented from entering the groove to abrade the expansion block.

Description

TECHNICAL FIELD

[0001] The utility model relates to cement fineness detection technical field, specifically a kind of for cement fineness detection negative pressure screen analysis equipment. BACKGROUND

[0002] Cement is a common building material, slurry after adding water and stirring, can harden in air or in water, and can firmly cement sand, stone and other materials together.

[0003] Cement negative pressure screen analysis equipment is mainly used for detecting the fineness of cement, i.e. the particle size distribution of cement particles. It is an important testing instrument commonly used in cement industry, construction field and scientific research institutions. Through negative pressure, cement particles smaller than the screen mesh aperture are carried away by airflow, while particles larger than the screen mesh aperture remain on the screen. By measuring the mass of particles remaining on the screen, the fineness of cement can be calculated to evaluate the quality and performance of cement.

[0004] In use, the conventional negative pressure screen analysis equipment directly places the screen frame on the suction inlet of the negative pressure screen analysis machine for negative pressure screening. This placement method leaves a gap between the screen frame and the suction inlet, which may cause air leakage and affect the accuracy of the screen analysis equipment. Therefore, a negative pressure screen analysis equipment for cement fineness detection is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] To make up for the deficiencies of the prior art and solve at least one technical problem in the background art, the utility model provides a negative pressure screen analysis equipment for cement fineness detection.

[0006] The utility model solves the technical problems by adopting the following technical scheme: the utility model discloses a negative pressure screen analysis equipment for cement fineness detection, which comprises a body, a screen frame and a support ring.

[0007] A support ring is fixedly connected in the suction inlet, and the screen frame is placed on the support ring.

[0008] The sealing mechanism comprises a gas storage block and an expansion block, and both the gas storage block and the expansion block are hollow.

[0009] The gas storage block is arranged in the support ring, the expansion block is arranged on the side wall of the suction inlet, and the gas storage block and the expansion block are communicated through a connecting pipe.

[0010] A groove is formed on the surface of the screen frame relative to the position of the expansion block.

[0011] A pressing mechanism is arranged on the surface of the gas storage block to press the gas storage block and make the expansion block expand.

[0012] The protective film is fixedly connected in the notch of the screen frame surface and is made of elastic material.

[0013] Preferably, the pressing mechanism comprises a sliding shaft, a force storage shaft is arranged on the surface of the sliding shaft, one end of the force storage shaft away from the sliding shaft is slidingly connected through the support ring, a pressing plate is fixedly connected to the end of the force storage shaft, and the pressing plate is attached to the gas storage block.

[0014] Preferably, the pressing mechanism further comprises an elastic piece, the elastic piece is fixedly connected to the surface of the force storage shaft, one end of the elastic piece away from the force storage shaft is a free end, an arc-shaped clamping groove is arranged at the position of the support ring penetrated by the force storage shaft, and the force storage shaft is slidingly connected with the sliding shaft through a spring.

[0015] Preferably, a top plate is fixedly connected to one end of the sliding shaft away from the force storage shaft, the surface of the top plate is inclined, a buffer pad is fixedly connected to the surface of the sliding shaft, the cross section of the buffer pad is triangular, and the buffer pad is hollow.

[0016] Preferably, a motor is fixedly connected to the surface of the body, an output shaft of the motor is rotatably connected through the body, and a main gear is fixedly connected to the end of the output shaft; a gear slot is arranged on the surface of the body, a gear ring is rotatably connected in the gear slot, the gear is meshingly connected with the gear ring, a striking shaft is slidingly connected to the surface of the gear ring through a spring, a stop block is fixedly connected to the surface of the striking shaft, a guide block is fixedly connected in the gear slot, and an inclined angle is arranged on the surface of the part, where the stop block and the guide block are in contact with each other.

[0017] Preferably, a plurality of striking shafts are arranged at equal intervals.

[0018] The utility model discloses a body, a gas storage block, a pressing mechanism, a motor and a striking mechanism are arranged on the body.

[0019] 1. The utility model discloses a body, a gas storage block, a pressing mechanism, a motor and a striking mechanism are arranged on the body.

[0020] 2. The utility model discloses a body, a gas storage block, a pressing mechanism, a motor and a striking mechanism are arranged on the body. DRAWINGS

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the main body structure of Example 1;

[0023] Figure 2 This is a schematic diagram of the support ring structure in Example 1;

[0024] Figure 3 Example 1 Figure 2 Schematic diagram of the structure at point A in the middle;

[0025] Figure 4 Example 1 Figure 3 Schematic diagram of the structure at point B;

[0026] Figure 5 Example 2 Figure 3 Schematic diagram of the structure at point C;

[0027] Figure 6 This is a schematic diagram of the motor structure in Example 2;

[0028] Figure 7 This is a schematic diagram of the main gear structure in Embodiment 2;

[0029] Figure 8 Example 2 Figure 7 Schematic diagram of the structure at point D.

[0030] In the diagram: 1. Body; 2. Screen frame; 3. Top plate; 5. Buffer pad; 6. Sliding shaft; 7. Support ring; 8. Power storage shaft; 10. Expansion block; 11. Gas storage block; 12. Connecting pipe; 13. Pressure plate; 14. Protective membrane; 15. Spring piece; 16. Slot; 17. Motor; 18. Guide block; 19. Main gear; 20. Gear ring; 21. Gear groove; 22. Impact shaft; 23. Stop block; 24. Angled angle. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Example 1

[0033] Referring to Figures 1-4 As shown in the figure, a negative pressure screen analysis device for cement fineness detection, comprising a body 1, a screen frame 2 and a support ring 7, the surface of the body 1 is provided with a suction port for placing the screen frame 2;

[0034] The support ring 7 is fixedly connected in the suction port, and the screen frame 2 is placed on the support ring 7, and the support ring 7 is provided with a sealing mechanism;

[0035] The sealing mechanism comprises a gas storage block 11 and an expansion block 10, and the gas storage block 11 and the expansion block 10 are both hollow;

[0036] The gas storage block 11 is arranged in the support ring 7, the expansion block 10 is arranged on the side wall of the suction port, and the gas storage block 11 and the expansion block 10 are communicated through a connecting pipe 12;

[0037] A groove is formed on the surface of the screen frame 2 relative to the position of the expansion block 10;

[0038] A pressing mechanism is arranged on the surface of the gas storage block 11 for extruding the gas storage block 11 so that the expansion block 10 expands;

[0039] A protective film 14 is fixedly connected in the notch on the surface of the screen frame 2, and the protective film 14 is made of elastic material;

[0040] The pressing mechanism comprises a sliding shaft 6, the surface of the sliding shaft 6 is provided with a force storage shaft 8, one end of the force storage shaft 8 away from the sliding shaft 6 is slidably connected through the support ring 7, the end of the force storage shaft 8 is fixedly connected with a pressing plate 13, and the pressing plate 13 is attached to the gas storage block 11;

[0041] When working, the screen frame 2 is placed on the suction port, and the top plate 3 is extruded so that the top plate 3 drives the sliding shaft 6, the sliding shaft 6 drives the force storage shaft 8 to press down, and the pressing plate 13 extrudes the gas storage block 11 to deform, at this time, the gas enters the expansion block 10 through the connecting pipe 12, the expansion block 10 is expanded under pressure, and is clamped in the groove on the surface of the screen frame 2 to achieve the effect of sealing, the sealing property of the expansion block 10 can be further enhanced by the elastic film, the gap between the screen frame 2 and the suction port is blocked by the expansion block 10, thereby avoiding the leakage of gas and affecting the accuracy of the screen analysis device, and the groove can be protected by the elastic film to avoid the cement particles entering the groove and wearing the expansion block 10, after the screen frame 2 is lifted, the pressing plate 13 is lifted by the spring below the pressing plate 13 to drive the sliding shaft 6 to reset.

[0042] The pressing mechanism further comprises an elastic sheet 15 fixedly connected to the surface of the force storage shaft 8, the end of the elastic sheet 15 away from the force storage shaft 8 is a free end, the supporting ring 7 is provided with an arc-shaped clamping groove 16 at the position through which the force storage shaft 8 penetrates, the force storage shaft 8 is slidably connected with the sliding shaft 6 through a spring, the end of the sliding shaft 6 away from the force storage shaft 8 is fixedly connected with the top plate 3, the surface of the top plate 3 is inclined, the surface of the sliding shaft 6 is fixedly connected with the buffer pad 5, the cross section of the buffer pad 5 is triangular, and the buffer pad 5 is hollow;

[0043] In operation, the sliding shaft 6 is pressed downward, and under the limitation of the elastic sheet 15, the force storage shaft 8 does not slide, when the sliding shaft 6 moves to the limit position, the sliding shaft 6 extrudes the force storage shaft 8, the elastic sheet 15 deforms, at this time, the force storage shaft 8 moves downward and drives the pressing plate 13 to instantaneously extrude the gas storage block 11, through the force storage of the force storage shaft 8, the screen frame 2 can be completely placed into the suction inlet, the expansion block 10 expands again, the edge of the screen frame 2 can avoid scratching the expansion block 10, and the wear of the expansion block 10 is accelerated, at the same time when the sliding shaft 6 extrudes the force storage shaft 8, the buffer pad 5 is clamped into the force storage shaft 8, the effect of delayed reset of the sliding shaft 6 is realized, after the cement in the screen frame 2 is screened and taken out, the pressing plate 13 drives the force storage shaft 8 to reset first, when the buffer pad 5 is separated from the force storage shaft 8, the spring in the force storage shaft 8 drives the sliding shaft 6 to instantaneously reset, the inertia and vibration generated will shake off the cement particles remaining on the surface of the top plate 3, the screen frame 2 is prevented from being lifted, the screen frame 2 is placed more stably, and the wear is reduced.

[0044] Embodiment two

[0045] Please refer to Figures 6-8 As another embodiment of the utility model, the surface of the body 1 is fixedly connected with a motor 17, the output shaft of the motor 17 is rotatably connected through the body 1, and the end is fixedly connected with a main gear 19, the surface of the body 1 is provided with a gear slot 21, the gear slot 21 is rotatably connected with a gear ring 20, the gear ring 20 is slidably connected with a striking shaft 22 through a spring, the surface of the striking shaft 22 is fixedly connected with a stop block 23, the gear slot 21 is fixedly connected with a guide block 18, the surface of the part, where the stop block 23 and the guide block 18 contact each other, is provided with an inclined angle 24, the striking shaft 22 is provided with a plurality of parts, and the parts are equidistantly distributed;

[0046] In work, through the motor 17 drive main gear 19, make main gear 19 drive gear ring 20 rotation, this gear ring 20 surface impact shaft 22 rotation, and the impact shaft 22 surface block 23 will with guide block 18 each other extrusion, make the impact shaft 22 to gear ring 20 inside shrink, when the impact shaft 22 through guide block 18, under the spring drive impact shaft 22 pop out impact screen frame 2 side wall, through the cooperation of block 23 and guide block 18, make the impact shaft 22 impact screen frame 2 side wall generated by the vibration of cement in the screen frame 2 will be scattered, in turn can improve the effect of negative pressure adsorption, also can avoid the situation of blockage, also indirectly improve the accuracy of screening, through the design of multiple impact shaft 22, can further improve the impact effect.

[0047] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0048] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A negative pressure screen analysis apparatus for cement fineness detection, characterized by: Including the body (1), the screen frame (2) and the support ring (7), the body (1) surface is equipped with suction inlet, for placing screen frame (2); The support ring (7) is fixedly connected in the suction inlet, the screen frame (2) is placed on the support ring (7), and the support ring (7) is provided with a sealing mechanism; The sealing mechanism includes gas storage block (11) and expansion block (10), and the gas storage block (11) and the expansion block (10) are both hollow; The gas storage block (11) is arranged in the support ring (7), the expansion block (10) is arranged on the side wall of the suction inlet, and the gas storage block (11) and the expansion block (10) are communicated through the connecting pipe (12); The surface of the screen frame (2) is provided with a recess relative to the position of the expansion block (10); The surface of the gas storage block (11) is provided with a pressing mechanism for extruding the gas storage block (11), so that the expansion block (10) expands; The notch of the surface of the screen frame (2) is fixedly connected with a protective film (14), and the protective film (14) is made of elastic material.

2. The apparatus for detecting the fineness of cement by using negative pressure screen analysis according to claim 1, characterized in that: The pressing mechanism includes a sliding shaft (6), the surface of the sliding shaft (6) is provided with a force storage shaft (8), one end of the force storage shaft (8) away from the sliding shaft (6) is slidably connected through the support ring (7), the end of the force storage shaft (8) is fixedly connected with a pressing plate (13), and the pressing plate (13) is attached to the gas storage block (11).

3. The apparatus for detecting the fineness of cement by using negative pressure screen analysis according to claim 2, characterized in that: The pressing mechanism further includes a spring piece (15), the spring piece (15) is fixedly connected to the surface of the force storage shaft (8), one end of the spring piece (15) away from the force storage shaft (8) is a free end, the support ring (7) is provided with a circular arc shaped clamping groove (16) at the position penetrated by the force storage shaft (8), and the force storage shaft (8) is slidably connected with the sliding shaft (6) through the spring.

4. The apparatus for detecting the fineness of cement by using negative pressure screen analysis according to claim 3, wherein: One end of the sliding shaft (6) away from the force storage shaft (8) is fixedly connected with a top plate (3), the surface of the top plate (3) is inclined, the surface of the sliding shaft (6) is fixedly connected with a buffer pad (5), the cross section of the buffer pad (5) is triangular, and the buffer pad (5) is hollow.

5. The apparatus for detecting the fineness of cement by using negative pressure screen analysis according to claim 4, wherein: The surface of the body (1) is fixedly connected with a motor (17), the output shaft of the motor (17) is rotatably connected through the body (1), and the end is fixedly connected with a main gear (19); The surface of the body (1) is provided with a gear slot (21), the gear slot (21) is rotatably connected with a gear ring (20), the gear ring (20) is rotatably connected with the gear ring (20), and the gear ring (20) is rotatably connected with the gear ring (20). The surface of the gear ring (20) is slidably connected with a striking shaft (22) through a spring, the surface of the striking shaft (22) is fixedly connected with a stop block (23), the gear slot (21) is fixedly connected with a guide block (18), and the surface of the part where the stop block (23) and the guide block (18) contact each other is provided with an inclined angle (24).

6. The apparatus for detecting the fineness of cement by using negative pressure screen analysis according to claim 5, wherein: The striking shaft (22) is provided with a plurality of equidistantly distributed.

Images