High-efficiency fineness detection device for cement mineral admixture

Abstract

The utility model discloses an efficient fineness detection device for cement mineral admixtures. The efficient fineness detection device comprises a screening box, a connecting rod, a sliding rod, a rack, a reciprocating driving mechanism, a conical collecting hopper, a water collecting tank and a water sprinkler. A screen is arranged at the bottom of the screening box, the connecting rods extending outwards are symmetrically fixed to the two ends of the two side faces of the screening box, and the two ends of the horizontally-arranged sliding rod are fixedly connected with the two connecting rods respectively. The machine frames are distributed on the two sides of the screening box, the upper portions of the machine frames are slidably connected with the sliding rods, and the reciprocating driving mechanism is connected with the screening box. The conical collecting hopper is arranged under the screening box, and the upper end opening of the conical collecting hopper is larger than the movement range of the screening box. The water collecting tank is arranged below a conical outlet of the conical collecting hopper, and the water sprinkler is arranged above the screening box. The detection device can accelerate the admixtures to pass through the screen, so that the detection efficiency is improved, and the accuracy of a detection result is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fineness detection equipment field especially relates to a cement mineral admixture's fineness efficient detection device. BACKGROUND

[0002] Mineral admixture refers to the inorganic mineral fine powder with cementitious properties added in concrete materials, including fly ash, steel slag powder, granulated blast furnace slag, silica fume, zeolite powder, etc. The application of these industrial solid wastes not only can reduce the cement dosage, but also can absorb industrial solid wastes, promote the low carbonization and sustainable development of concrete. Moreover, it is helpful to improve the performance of concrete materials, for example, a certain amount of fly ash can reduce the water consumption under the condition of maintaining the original workability of concrete. Granulated blast furnace slag powder, zeolite powder and silica fume have potential water hardness and good activity, which can react with calcium hydroxide generated by cement hydration to form cementitious components. In addition, silica fume can also fill the pores in the concrete matrix, improve the compactness and improve the strength of concrete. The mineral admixture mixed into the concrete needs to be ground to a certain fineness, so that the admixture particles have a larger specific surface area and improve the reactivity. Therefore, the production enterprises need to detect the fineness of the ground mineral admixture to ensure the quality of the products. The water screening method is one of the main methods for detecting the fineness of the admixture. This method is to place the mineral admixture on the screen, then pass through the screen under the scouring of a certain pressure water, and then calculate the mass fraction of the material on the screen, that is, the residue on the screen represents the fineness. However, the mineral admixture soaked by water is easy to adhere to the screen, which affects the passing of the upper admixture through the screen, and further affects the detection efficiency and the accuracy of the detection results. SUMMARY

[0003] The utility model provides a cement mineral admixture's fineness efficient detection device, it can accelerate admixture to pass through the screen, thereby improve the detection efficiency, improve the accuracy of the detection result. Specifically, the technical scheme of the utility model is as shown below.

[0004] A cement mineral admixture's fineness efficient detection device, it includes: screening box, connecting rod, sliding rod, frame, reciprocating drive mechanism, conical material hopper, water collecting tank and sprinkler. Wherein: the bottom of screening box has screen, and the two ends of the two sides of screening box are symmetrically fixed outwardly extending connecting rod, and the two ends of horizontally arranged sliding rod are fixedly connected with two connecting rods respectively. The frame is distributed on the two sides of screening box, and the upper part of frame is slidably connected with sliding rod, and the reciprocating drive mechanism is connected with screening box and can drive screening box to reciprocate along the direction of sliding rod. The conical material hopper is arranged directly below screening box, and the upper port of conical material hopper is larger than the movement range of screening box. The water collecting tank is arranged below the conical outlet of conical material hopper, and the sprinkler is arranged above screening box.

[0005] Further, a connecting block is fixed on the outer side wall of the conical collecting hopper, and the connecting block is sleeved on the frame and fixedly connected with the frame.

[0006] Further, the connecting block is detachably fixed with the frame by fasteners.

[0007] Further, a supporting frame is further included, the connecting rod and the slide rod fixed on the screening box are transferred and fixed on the supporting frame in the same way as the screening box, and the upper portion of the frame is slidably connected with the slide rod. The reciprocating driving mechanism is connected with the supporting frame and can drive the supporting frame to reciprocate along the direction of the slide rod. The screening box is detachably supported in the supporting frame.

[0008] Further, a protruding supporting plate is fixed on the outer side wall of the screening box, and the supporting plate is supported on the upper end face of the supporting frame.

[0009] Further, the conical collecting hopper is provided with a water spraying pipe at the upper end opening, and the water spraying opening of the water spraying pipe faces the inner wall of the conical collecting hopper.

[0010] Further, the lower portion of the water collecting tank is provided with a positioning table, the bottom of the water collecting tank is located in a clamping groove of the positioning table, and the water collecting tank is located directly below the conical outlet of the conical collecting hopper.

[0011] Further, the lower end opening of the screening box extends into the upper end opening of the conical collecting hopper.

[0012] Compared with the prior art, the cement mineral admixture fineness efficient detection device has the following beneficial effects: the reciprocating driving mechanism is used to make the screening component formed by the screening box, the connecting rod and the slide rod reciprocate in the horizontal direction, so that the mineral admixture is forced to turn over, thereby relieving the problem that the upper mineral admixture is not easy to pass through the screen mesh due to the adhesion of the wetted admixture on the screen mesh in the screening box, improving the detection efficiency and the accuracy of the measurement result. In addition, the cooperation of the supporting frame and the screening box enables the screening box to reciprocate in the horizontal direction and to be conveniently taken down, and the admixture that is intercepted in the screening box and cannot pass through after the screening is collected. BRIEF DESCRIPTION OF DRAWINGS

[0013] The drawings constituting a part of this utility model are used to provide a further understanding of the utility model, and the schematic embodiments of the utility model and the description thereof are used to explain the utility model and do not constitute an improper limitation on the utility model.

[0014] Figure 1 It is a front view of the cement mineral admixture fineness efficient detection device in the following embodiments.

[0015] Figure 2 is a structural schematic view of a screening box used in the following examples.

[0016] Figure 3 is a front view of another fineness efficient detection device for cement mineral admixtures used in the following examples.

[0017] Figure 4 is a top view of another fineness efficient detection device for cement mineral admixtures used in the following examples.

[0018] Figure 5 is a structural schematic view of another screening box used in the following examples.

[0019] Figure 6 is a structural schematic view of a supporting frame used in the following examples.

[0020] The numerical markers in the above-mentioned drawings respectively represent: 1-screening box, 2-connecting rod, 3-sliding rod, 4-rack, 5-reciprocating driving mechanism, 6-conical collecting hopper, 7-water collecting tank, 8-sprinkler, 9-connecting block, 10-fastener, 11-supporting frame, 12-supporting plate, 13-water spraying pipe, 14-positioning table. DETAILED DESCRIPTION

[0021] For the convenience of description, if the words "upper", "lower", "left" and "right" appear in the present utility model, they only mean the same as the upper, lower, left and right directions of the drawings themselves, and do not limit the structure, and are only for the convenience of describing the present utility model and simplifying the description, and thus cannot be understood as limiting the present utility model in that the indicated device or element needs to have a specific orientation, be constructed and operated in a specific orientation.

[0022] It should be pointed out that the following detailed description is exemplary and is intended to provide further description of the present utility model. Unless otherwise specified, all technical and scientific terms used in the present utility model have the same meaning as generally understood by those skilled in the art to which the present utility model belongs. The fineness efficient detection device for cement mineral admixtures of the present utility model will be further described in conjunction with the drawings and specific embodiments of the present utility model.

[0023] Reference Figure 1 and Figure 2 , an example of a fineness efficient detection device for cement mineral admixtures, comprises: a screening box 1, a connecting rod 2, a sliding rod 3, a rack 4, a reciprocating driving mechanism 5, a conical collecting hopper 6, a water collecting tank 7 and a sprinkler 8. Specifically, the screening box 1 is of a cubic structure, the upper end and the bottom thereof are open, and the bottom of the screening box 1 has a screen for screening mineral admixtures. In addition, the screening box 1 can also adopt a cylindrical structure, etc.

[0024] The two ends of the front and rear side walls of the screening box 1 are vertically and symmetrically fixed with the outwardly extending connecting rods 2. The slide rods 3 are two, which are horizontally arranged at the front and rear side walls of the screening box 1 and parallel to each other. The two ends of each slide rod 3 are fixedly connected with the outer ends of the connecting rods 2 at the two ends of the side walls of the screening box 1, so that one slide rod 3 is arranged at the front and rear side walls of the screening box 1. The slide rod 3 can be a round rod, a square rod, a solid rod or a hollow tube.

[0025] The machine frames 4 are at least four, which are arranged at the front and rear side walls of the screening box 1. The upper parts of the machine frames 4 are sleeved on the slide rods 3 through the slide holes, so as to support the screening box 1 in the air. The compound driving mechanism 5 can be fixed on the ground through a support frame, and the compound driving mechanism 5 is connected with the left or right outer wall of the screening box 1. The compound driving mechanism 5 can be a pneumatic cylinder, so as to drive the screening box 1 to reciprocate along the slide rods 3.

[0026] The conical collecting hopper 6 is arranged directly below the screening box 1, and the upper port of the conical collecting hopper 6 is larger than the movement range of the screening box 1, so that the mineral mixture screened from the screening box 1 is collected in the conical collecting hopper 6. The water collecting tank 7 is arranged below the conical outlet of the conical collecting hopper 6, which is used to collect the mixture of the mixture and water collected from the conical outlet. The sprinkler 8 is arranged above the screening box 1, which is mainly used to spray water flow with a certain pressure (such as 0.03-0.07 MPa) to the mineral mixture in the screening box 1.

[0027] When detecting, the mineral admixture particles to be detected are added into the screening box 1, and then water is sprayed into the screening box 1 through the water sprayer 8. At the same time, the reciprocating driving mechanism 5 is started to drive the screening box 1 to reciprocate along the slide rod 3 to perform screening work. The reciprocating range can be 1-5 cm, such as 1 cm, 2 cm, 4 cm, 5 cm, or other appropriate distances according to needs, with the center point of the screening box 1 above the conical aggregate hopper 6 as the reference. For example, the screening time is set to 3 minutes, and after the mineral admixture in the water collecting tank 7 is completely precipitated, the upper water is gradually poured out, and then the remaining wet material is dried to a constant weight. The percentage a of the initial mineral admixture M1 added into the screening box 1 is calculated, and the screening residue 100%-a is obtained to represent the fineness of the mineral admixture. The detection device of the embodiment can make the screening components formed by the screening box 1, the connecting rod 2 and the slide rod 3 reciprocate in the horizontal direction through the reciprocating driving mechanism 5, so as to force the mineral admixture to turn over, thereby dispersing the mineral admixture which is easy to stick after being wetted, and promoting the mineral admixture sticking to the screen of the screening box 1 to peel off or pass through the screen, thereby alleviating the problem that the upper mineral admixture is not easy to pass through the screen due to sticking to the screen after being wetted, and improving the detection efficiency and the accuracy of the measurement results.

[0028] Reference Figure 1 In another embodiment, the lower port of the screening box 1 of the above-mentioned embodiments extends into the upper port of the conical aggregate hopper 6 by a distance of 2-5 cm or the like, thereby helping to better collect the mineral admixture screened from the lower port of the screening box, and improving the detection accuracy. Further, in a more specific embodiment, a connecting block 9 is fixed to the outer side wall of the conical aggregate hopper 6, and the connecting block 9 has a vertical through hole. The connecting block 9 is sleeved on the rack 4 through the through hole and is fixedly connected with the rack 4, so as to fix the conical aggregate hopper 6 below the screening box 1. In addition, the connecting block 9 and the rack 4 can be detachably fixed together through a fastener 10. For example, a screw hole is formed in the connecting block 9, and the fastener 10 is a bolt which is screwed into the screw hole, so that the connecting block 9 and the rack 4 can be detachably fixed together by tightening the fastener 10, thereby facilitating adjustment of the height of the conical aggregate hopper 6, so that the lower port of the screening box 1 extends into the upper port of the conical aggregate hopper 6.

[0029] Reference Figures 3-6In another embodiment, the fineness efficient detection device of cement mineral admixture of the above-mentioned embodiment further comprises a square supporting frame 11, and the connecting rods 2 and the slide rods 3 fixed on the screening box 1 are transferred and fixed to the supporting frame 11 in the same way as the screening box 1. That is, the outwardly extending connecting rods 2 are vertically and symmetrically fixed at both ends of the front and rear side walls of the supporting frame 11. The slide rods 3 are two, which are horizontally arranged at the front and rear side walls of the supporting frame 11 and parallel to each other. The outer ends of the connecting rods 2 at both ends of the side walls of the supporting frame 11 are fixedly connected with the two ends of each slide rod 3, so that one slide rod 3 is arranged at the front and rear side walls of the supporting frame 11. At this time, the connecting rods 2 and the slide rods 3 are not arranged on the side walls of the screening box 1, and the upper part of the rack 4 is slidably connected with the slide rods 3 on the supporting frame 11, and the reciprocating driving mechanism 5 is connected with the left or right outer wall of the supporting frame 11, which can drive the supporting frame 11 to reciprocate along the direction of the slide rods 3. The screening box 1 can be detachably supported in the supporting frame 11.

[0030] Meanwhile, the protruding support plates 12 are fixed on the outer side walls of the screening box 1, and the support plates 12 support the upper end face of the supporting frame 11 when the screening box 1 enters the supporting frame 11, so that the screening box 1 can be detachably installed in the supporting frame 11. In this embodiment, the cooperation of the supporting frame 11 and the screening box 1 enables the screening box 1 to reciprocate in the horizontal direction for screening work, and the screening box 1 can be conveniently taken out to collect the admixture that cannot pass through the screening box 1 after the screening is completed. At this time, after the residue / fineness of the mineral admixture to be tested is calculated according to the method described above, the admixture that cannot pass through can be used to calculate the test result again. After the admixture that cannot pass through is dried to a constant weight M2, the ratio of M2 / M1 is calculated, that is, the residue. Then, the result is compared with the residue 100%-a calculated above. If the error is less than 0.5%, the test result is valid.

[0031] Reference Figure 1 And Figure 3 In another embodiment, a circle of water spraying pipes 13 is arranged at the upper end edge of the conical collecting hopper 6, and the water spraying openings of the water spraying pipes 13 face the inner wall of the conical collecting hopper 6, so as to flush the mineral admixture adhered to the inner wall of the conical collecting hopper 6, so that the mineral admixture enters the water collecting tank 7 for collection, and the accuracy of the detection result is improved.

[0032] Reference Figure 1 And Figure 3In another embodiment, the lower part of the water collecting tank 7 of the above-mentioned embodiment has a positioning platform 14 with a clamping groove, and the bottom of the water collecting tank 7 is located in the clamping groove, so that the water collecting tank 7 is located directly below the conical outlet of the conical collecting hopper 6, and the mixture of the admixture and water collected from the conical outlet at the bottom of the conical collecting hopper 6 is better collected.

[0033] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A device for efficient detection of fineness of cement mineral admixtures, characterized by, It comprises: a screening box, the bottom of which is provided with a screen, two ends of the two side faces of the screening box are symmetrically fixed with outwardly extending connecting rods, and two ends of a horizontally arranged slide rod are fixedly connected with the two connecting rods, respectively; a rack, which is arranged on the two sides of the screening box and has an upper part that is in sliding connection with the slide rod; a reciprocating driving mechanism, which is connected with the screening box and can drive the screening box to reciprocate along the direction of the slide rod; a conical collecting hopper, which is arranged directly below the screening box and has an upper port that is larger than the movement range of the screening box; a water collecting tank, which is arranged below the conical outlet of the conical collecting hopper; a sprinkler, which is arranged above the screening box.

2. The apparatus for measuring fineness efficiency of cement mineral admixtures according to claim 1, wherein A connecting block is fixed on the outer side wall of the conical collecting hopper, the connecting block is sleeved on the rack and fixedly connected with the rack.

3. The apparatus for measuring fineness efficiency of cement mineral admixtures according to claim 2, wherein The connecting block and the rack are detachably fixed together by fasteners.

4. The apparatus for measuring fineness efficiency of cement mineral admixtures according to claim 1, wherein The conical collecting hopper is provided with a water spraying pipe at the edge of the upper port, and the water spraying port of the water spraying pipe faces the inner wall of the conical collecting hopper.

5. The apparatus for detecting fineness efficiency of cement mineral admixtures according to claim 1, characterized in that, The lower part of the water collecting tank is provided with a positioning table, the bottom of the water collecting tank is located in the clamping groove of the positioning table, and the water collecting tank is located directly below the conical outlet of the conical collecting hopper.

6. The apparatus for detecting fineness efficiency of cement mineral admixtures according to claim 1, characterized in that, The lower port of the screening box extends into the upper port of the conical collecting hopper.

7. The device for testing fineness efficiency of cement mineral admixtures according to any one of claims 1-6, characterized in that, It also comprises a supporting frame, two ends of the two side faces of the supporting frame are fixed with outwardly extending connecting rods, two ends of the connecting rods are fixedly connected with two ends of a horizontally arranged slide rod, respectively, and an upper part of the rack is in sliding connection with the slide rod; the reciprocating driving mechanism is connected with the supporting frame; and the screening box is detachably supported in the supporting frame.

8. The apparatus for detecting fineness efficiency of cement mineral admixtures according to claim 7, characterized in that, An outwardly protruding supporting plate is fixed on the outer side wall of the screening box, and the supporting plate is supported on the end face of the upper port of the supporting frame.

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