Cement-based material pressure forming device

Abstract

The utility model provides a cement-based material pressure forming device. The cement-based material pressure forming device comprises a base, a cylinder detachably installed on the base, a piston matched with an inner cavity of the cylinder and capable of being inserted into the inner cavity of the cylinder, and a cover plate detachably covering the top of the piston. The base is provided with a lower drainage channel communicated with an area defined by the base and the cylinder. The piston is of a cavity structure, the bottom of the piston is provided with an upper drainage channel communicated with an area defined by the base and the cylinder, and a water absorption piece is arranged in an inner cavity of the piston. And an exhaust hole communicated with the inner cavity of the piston is formed in the cover plate. The cement-based material pressure forming device is simple in structure, low in cost and convenient to operate, and solution substances separated out in the pressure forming process can be discharged in time.

Description

Technical Field

[0001] The utility model belongs to the field of cement-based material pressure testing equipment, in particular to a cement-based material pressure forming device. Background Art

[0002] In order to test the performance of cement-based materials under pressure conditions, the cement-based materials need to be formed into corresponding experimental specimens under pressure. However, since the cement-based materials have a certain consistency or vertical fluidity after being stirred with water, a solution that dissolves the soluble substances in the cement-based materials will precipitate during molding under pressure conditions, affecting the molding effect of the specimens. Therefore, a cement-based material pressure molding device is needed that can discharge the precipitated solution substances in time during the pressure molding process. Utility Model Content

[0003] In view of this, in order to solve the above technical problems, the utility model proposes a cement-based material pressure forming device with simple structure, low cost, easy operation, and the ability to promptly discharge solution substances precipitated during the pressure forming process.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0005] A cement-based material pressure forming device comprises a base, a cylinder detachably mounted on the base, a piston adapted to and insertable into the inner cavity of the cylinder, and a detachable cover plate covering the top of the piston; the base is provided with a lower drainage channel connected to the area enclosed by the base and the cylinder; the piston is a hollow structure, the bottom of which is provided with an upper drainage channel connected to the area enclosed by the base and the cylinder, and the inner cavity of the piston is provided with a water absorbent; the cover plate is provided with an exhaust hole connected to the inner cavity of the piston.

[0006] The cement-based material is poured into the area limited by the base and the cylinder, the piston is inserted into the cylinder, the cover plate is closed on the top of the piston, the press applies pressure to the cover plate, and the cement-based material to be formed is loaded through the movement of the piston. Part of the solution precipitated from the cement-based material after water mixing under pressure conditions is discharged to the outside of the device through the lower drainage channel, and the other part is discharged through the upper drainage channel and adsorbed by the water absorbent, ultimately achieving the purpose of timely discharge of the precipitated solution substances during the pressure molding process; after the molding work is completed, the base is removed and a circular ring with a diameter slightly larger than the cement-based material molding sample is placed at the bottom, and then a certain pressure is applied to the cover plate to press out the prepared specimen. According to the intended measurement method, the cylindrical specimen of the molded cement-based material can be cut into the required size specifications and then related maintenance and testing work can be carried out; according to the actual experimental conditions, different molding pressures can be selected to mold cement-based materials under different pressure conditions, and molding devices of different sizes can be selected to mold specimens of different sizes.

[0007] Furthermore, the base is a three-layer concentric cylindrical structure; the lower drainage channel includes a drainage trough and a lower drainage channel, the drainage trough is arranged on the upper end surface of the lowest cylinder of the base, the lower drainage channel has multiple water inlets, all of which are connected to the area surrounded by the base and the cylinder, and the water outlet of the lower drainage channel is connected to the drainage trough.

[0008] The solution substances precipitated during the pressure forming process flow into the lower drainage channel from the water inlet of the lower drainage channel, and are finally collected in the drainage trough for discharge.

[0009] Furthermore, the cylinder is detachably nested on the outer surface of the uppermost cylinder of the base, and the processing accuracy between the two is 2-3 threads.

[0010] Furthermore, an annular groove is provided on the bottom edge of the piston along the circumferential direction, and a sealing gasket is provided in the annular groove. The piston can slide up and down in the cylinder, and the processing accuracy between the two is 2-3 threads.

[0011] Furthermore, the inner cavity of the piston is provided with an inner support ring tube concentric therewith; the bottom of the cover plate is circumferentially provided with an insert protruding ring, and the insert protruding ring is detachably inserted into the area surrounded by the upper end of the outer wall of the piston and the upper end of the inner support ring tube.

[0012] The piston is pressurized by the cover plate. The piston is a hollow structure, so an inner support ring is provided to enhance the pressure-bearing strength of the piston and fix the cover plate together with the side wall of the piston.

[0013] Furthermore, the base is a metal base; the cylinder is a metal cylinder; the piston is a metal piston; the cover is a metal cover; and the water absorbent is water absorbent cotton.

[0014] Furthermore, a lower diaphragm and a lower filter membrane are laid from bottom to top on the upper end surface of the base in the area surrounded by the cylinder, and a plurality of drainage holes are provided on the lower diaphragm.

[0015] The solution precipitated under pressure is first filtered through the lower filter membrane, then flows into the lower drainage channel through the drainage hole of the lower diaphragm and the water inlet of the lower drainage channel, and finally gathers in the drainage trough for discharge.

[0016] Furthermore, the lower diaphragm is a metal diaphragm.

[0017] Furthermore, an upper diaphragm and an upper filter membrane are laid on the bottom of the piston from top to bottom, and a plurality of drainage holes are provided on the upper diaphragm.

[0018] The solution precipitated under pressure is first filtered through the upper filter membrane and then enters the upper drainage channel through the drainage holes of the upper diaphragm, and is finally adsorbed by the water absorbent.

[0019] Furthermore, the upper diaphragm is a metal diaphragm.

[0020] Compared with the prior art, the cement-based material pressure forming device described in the present invention has the following advantages:

[0021] (1) The cement-based material pressure forming device described in the present invention has a simple structure, low cost, and convenient operation. A press is used to apply pressure to the cover plate, and the pressure is applied to the cement-based material to be formed by the movement of the piston. A part of the solution precipitated from the cement-based material after water mixing under pressure is discharged to the outside of the device through the lower drainage channel, and the other part is discharged through the upper drainage channel and absorbed by the water absorbing member, thereby achieving the purpose of timely discharge of the precipitated solution material during the pressure forming process;

[0022] (2) The cement-based material pressure forming device described in the present invention uses a lower filter membrane, a lower diaphragm, a lower drainage channel and a drainage trough to form a lower drainage path, and uses an upper filter membrane, an upper diaphragm, an upper drainage channel and a water absorbent member to form an upper drainage path. The solution that dissolves soluble substances in the cement-based material precipitated during the pressure forming process can be discharged in a timely manner through the upper and lower drainage paths;

[0023] (3) The cement-based material pressure forming device described in the present invention is easy to assemble and disassemble, and the formed cement-based material specimen can be simply removed after the forming is completed. After the forming work is completed, the entire device is easy to disassemble and clean, and except for the upper filter membrane and the lower filter membrane, the rest of the parts can be reused. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0025] Figure 1 This is a schematic structural diagram of the cement-based material pressure forming device described in an embodiment of the present utility model.

[0026] Description of reference numerals:

[0027] 1-base, 2-cylinder, 3-piston, 4-cover, 5-drainage groove, 6-lower drainage channel, 7-lower diaphragm, 8-lower filter membrane, 9-sealing gasket, 10-upper drainage channel, 11-absorbent cotton, 12-inner support ring, 13-upper diaphragm, 14-upper filter membrane, 15-inserted protruding ring, 16-vent. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0029] In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0030] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0031] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0032] like Figure 1 As shown, a cement-based material pressure forming device includes a base 1, a cylinder 2 detachably mounted on the base 1, a piston 3 adapted to and insertable into the inner cavity of the cylinder 2, and a cover plate 4 detachably covering the top of the piston 3;

[0033] The base 1 is a metal base with a three-layer concentric cylindrical structure; the base 1 is provided with a lower drainage channel, which includes a drainage groove 5 and a lower drainage hole 6. The drainage groove 5 is provided on the upper end surface of the lowest cylinder of the base 1. The lower drainage hole 6 has multiple water inlets, all of which are connected to the area enclosed by the base 1 and the cylinder 2, and the water outlet of the lower drainage hole 6 is connected to the drainage groove 5. The upper end surface of the base 1 is covered with a lower diaphragm 7 and a lower filter membrane 8 from bottom to top within the area enclosed by the cylinder 2. The lower diaphragm 7 is made of metal and has multiple drainage holes.

[0034] Cylinder 2 is a metal cylinder; Cylinder 2 is detachably nested on the outer surface of the topmost cylinder of base 1, and the processing accuracy between the two is 2-3 wires;

[0035] The piston 3 is a metal piston with a hollow structure. The bottom edge of the piston 3 is provided with an annular groove along the circumference, and a sealing gasket 9 is provided in the annular groove. The piston 3 can slide up and down in the cylinder 2, and the machining accuracy between the two is 2-3 threads. The bottom of the piston 3 is provided with an upper drainage channel 10 connected to the area enclosed by the base 1 and the cylinder 2. The lower section of the inner cavity of the piston 3 is filled with absorbent cotton 11. The inner cavity of the piston 3 is provided with an inner support ring 12 concentric therewith. The bottom of the piston 3 is covered with an upper diaphragm 13 and an upper filter membrane 14 from top to bottom. The upper diaphragm 13 is made of metal and has multiple drainage holes.

[0036] The cover plate 4 is a metal cover plate; an insert protruding ring 15 is provided at the bottom of the cover plate 4 along the circumferential direction, and the insert protruding ring 15 is detachably inserted into the area surrounded by the upper end of the outer wall of the piston 3 and the upper end of the inner support ring tube 12; an exhaust hole 16 is provided on the cover plate 4 and is connected to the inner cavity of the piston 3.

[0037] The working process of the cement-based material pressure forming device described in the utility model is as follows:

[0038] (1) Check whether the lower drainage channel and the upper drainage channel 10 are connected, apply an appropriate amount of butter on the upper end surface of the base 1, lay the lower diaphragm 7 and the lower filter membrane 8 in sequence, and then install the cylinder 2;

[0039] (2) Pour the stirred cement-based material into the cylinder 2 according to the test requirements, and lay the upper filter membrane 14 and the upper diaphragm 13 on the top of the cement-based material poured into the cylinder 2 in sequence; place the absorbent cotton 11 in the inner cavity of the piston 3, apply an appropriate amount of butter on the bottom of the piston 3, and slowly place the piston 3 in the cylinder 2 until it is completely in contact with the cement-based material (upper diaphragm), and cover the cover plate 4 on the top of the piston 3;

[0040] (3) Place the assembled cement-based material pressure forming device at the center of the press base, adjust the pressure, make the pressure plate of the press contact with the cover plate 4, apply pressure according to the required pressure value, and the pressure holding time is determined according to the test requirements;

[0041] (4) Applying pressure to the cover plate 4, the piston 3 is moved to load the cement-based material. A portion of the solution precipitated from the cement-based material after water mixing under pressure passes through the lower filter membrane 8, the lower diaphragm 7, the lower drainage channel 6 and the drainage groove 7, and is discharged to the outside of the device. The other portion passes through the upper filter membrane 14, the upper diaphragm 13, the upper drainage channel 10, and is finally adsorbed by the absorbent cotton 11.

[0042] (5) After forming, take out the pressure forming device, remove the base 1 and place it on a ring with an inner diameter slightly larger than the piston, and apply pressure to the cover plate 4 until the formed cement-based material test piece falls into the ring;

[0043] (6) Disassemble, clean, and dry the pressure forming device for reuse.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cement-based material pressure forming device, characterized by: The utility model comprises a base, a cylinder detachably mounted on the base, a piston adapted to the inner cavity of the cylinder and insertable into the inner cavity of the cylinder, and a detachable cover plate covering the top of the piston; the base is provided with a lower drainage channel connected to the area enclosed by the base and the cylinder; the piston is a hollow structure, and an upper drainage channel is provided at its bottom which is connected to the area enclosed by the base and the cylinder, and the inner cavity of the piston is provided with a water absorbent; the cover plate is provided with an exhaust hole connected to the inner cavity of the piston.

2. The cement-based material pressure forming device according to claim 1, characterized in that: The base is a three-layer concentric cylindrical structure; the lower drainage channel includes a drainage groove and a lower drainage channel, the drainage groove is arranged on the upper end surface of the lowest cylinder of the base, the lower drainage channel has multiple water inlets, all of which are connected to the area surrounded by the base and the cylinder, and the water outlet of the lower drainage channel is connected to the drainage groove.

3. The cement-based material pressure forming device according to claim 2, characterized in that: The cylinder is detachably nested on the outer side of the uppermost cylindrical body of the base.

4. The cement-based material pressure forming device according to claim 1, characterized in that: An annular embedding groove is provided on the bottom edge of the piston along the circumferential direction, and a sealing gasket is provided in the annular embedding groove.

5. The cement-based material pressure forming device according to claim 1, characterized in that: The inner cavity of the piston is provided with an inner support ring cylinder concentric therewith; the bottom of the cover plate is provided with an insert protruding ring along the circumference, and the insert protruding ring is detachably inserted into the area surrounded by the upper end of the outer wall of the piston and the upper end of the inner support ring cylinder.

6. The cement-based material pressure forming device according to claim 1, characterized in that: The base is a metal base; the cylinder is a metal cylinder; the piston is a metal piston; the cover is a metal cover; and the water absorbent is water absorbent cotton.

7. The cement-based material pressure forming device according to any one of claims 1 to 6, characterized in that: A lower diaphragm and a lower filter membrane are laid from bottom to top on the upper end surface of the base in the area surrounded by the cylinder, and a plurality of drainage holes are provided on the lower diaphragm.

8. The cement-based material pressure forming device according to claim 7, characterized in that: The lower diaphragm is a metal diaphragm.

9. The cement-based material pressure forming device according to any one of claims 1 to 6, characterized in that: An upper diaphragm and an upper filter membrane are laid on the bottom of the piston from top to bottom, and a plurality of drainage holes are provided on the upper diaphragm.

10. The cement-based material pressure forming device according to claim 9, characterized in that: The upper diaphragm is a metal diaphragm.

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