Sample preparation device for testing sandstone similar material
Through the integrated design of the mixing box and compacting structure, the automatic coordination of the compacting plate and the arc-shaped clamping plate is solved, and the problem of uneven material loss and density of samples similar to sandstone materials is achieved, achieving efficient and uniform sample preparation.
Patent Information
- Application Number
- CN202510958730.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-11
- Publication Date
- 2025-09-02
AI Technical Summary
During the preparation of samples of traditional sandstone similar materials, the materials are easily lost during transfer and compaction, resulting in uneven density and low manual compaction efficiency, making it difficult to ensure the uniformity of the compaction of the sample.
The integrated design of the mixing box and compacting structure is adopted. The motor drives the compacting plate to automatically compact the compacting plate through the motor drive chain and sprocket mechanism. The compacting barrel is fixed with the arc-shaped clamping plate to ensure that the material directly enters the compacting barrel and compacts evenly, reducing material adhesion losses and mold displacement.
It realizes efficient transfer and uniform compaction of materials, reduces material losses, ensures uniformity of sample compactness, and improves preparation efficiency and sample quality.
Smart Images
Figure CN120577077A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of sandstone-like material sample preparation technology, in particular to a sample preparation device for sandstone-like material testing. Background Art
[0002] To prepare sandstone-like materials, the following steps were followed: 1. First, a sodium glutamate solution was prepared in a ratio of 2:5 sodium glutamate crystals to water. After standing for 1 hour, solid impurities were filtered through filter paper to produce a saturated sodium glutamate solution. 2. The appropriate mass of water reducer was added to the saturated sodium glutamate solution and thoroughly stirred to dissolve. 3. Quartz sand, cement, gypsum, and talcum powder were mixed in a cement mortar mixer according to the designed proportions until the dry materials were uniformly mixed. 4. The saturated sodium glutamate solution containing the water reducer was poured into the mixer and continued stirring. The mixture was poured into a 50 × 100 mm stainless steel three-flap saturator in multiple layers. Each layer was compacted with 20 vibrations using a hammer. After demolding, the samples were immediately wrapped in plastic wrap, numbered, and placed in a standard curing chamber at a temperature of 20 ± 2°C and a humidity of ≥ 95% for 28 days to form standard specimens. Three replicate specimens were prepared for each test group, for a total of 48 specimens.
[0003] The traditional operation method is that after mixing and stirring, the mixed sample needs to be moved and poured into the saturator. When the mixed sample is taken out, part of the material adheres to the mixer, and when the sample is poured into the saturator, part of it adheres to the holding bucket, resulting in loss of the sample material after mixing. Currently, compaction is mostly done manually or with a handheld compaction device. This method can easily lead to loose bonding at the stratified interface, uneven sample density, and the sample is easily offset during the compaction process, resulting in uneven sample density. Summary of the Invention
[0004] To solve the above problems, that is, to solve the problems raised by the above background technology, the present invention proposes a sample preparation device for testing sandstone-like materials, which includes a base, a mixing box and a bracket. A slot is provided at one end of the upper side of the base, and the bracket is fixedly connected to the upper end of the base corresponding to the slot. The mixing box is placed on the other side of the base and is fixed to the base via a pair of support plates. A compacting structure is installed on the bracket, and a mixing structure is installed in the mixing box. The compacting structure includes a pair of mounting plates, a chain, a pair of sprockets, a motor, a lifting rod, a pair of guide rods, a round rod, a compacting plate and an operating screen; The bracket is a U-shaped bracket, the operation screen is placed on one end of the upper side of the horizontal plate of the bracket, a pair of mounting plates are placed on the other end of the upper side of the horizontal plate of the bracket, the upper and lower ends of the opposite sides of a pair of mounting plates are respectively connected to the mounting shafts of the corresponding sprockets by bearings, and the pair of sprockets are connected by the chain, and the motor 1 is placed on one side of the mounting plate, and the output end of the motor 1 passes through the corresponding mounting plate and is fixedly connected to the mounting shaft of a sprocket, one end of the lifting rod is fixedly connected to the outside of the chain, and the two sides of one end of the lifting rod are fitted between the pair of mounting plates, and the other end of the lifting rod exceeds the pair of mounting plates, and the upper sides of a pair of guide rods are respectively fixedly connected to one end of the round rod, and the lower ends of a pair of guide rods slide through the horizontal plate of the bracket, and the lower ends of a pair of guide rods are fixedly connected to the compacting plate.
[0005] The present invention is further configured as follows: the mixing structure includes a discharge pipe, a second motor, a stirring shaft, a set of stirring rods and a set of arc-shaped scrapers; The lower part of one end of the mixing box close to the bracket is fixedly connected to the discharge pipe, and the other end of the mixing box is fixedly connected to the motor 2. The output end of the motor 2 passes through the mixing box and is fixedly connected to the mixing shaft. The bearing at the other end of the mixing shaft is connected to one end inside the mixing box. The outer side of the mixing shaft is fixedly connected to a group of evenly arranged mixing rods. The other ends of a group of mixing rods are respectively fixedly connected to the corresponding arc scrapers, and the outer sides of a group of arc scrapers are in contact with the inner wall of the mixing box.
[0006] The present invention is further configured as follows: a blocking assembly is installed at one end of the lower side of the mixing box, and the blocking assembly includes an electric push rod, a connecting plate and a sealing door; The electric push rod is placed on one side of a support plate close to the bracket, the upper end of the output end of the electric push rod is fixedly connected to the connecting plate, the upper end of the connecting plate is fixedly connected to the sealing door, the upper end of the sealing door slides through the lower end of the mixing box, and the sealing door matches the upper end of the discharge pipe.
[0007] The present invention is further configured as follows: a clamping assembly is installed on the lower side of the two vertical plates of the bracket, and the clamping assembly includes a pair of electric push rods and a pair of arc-shaped clamping plates; The lower outer sides of the two vertical plates of the bracket are respectively fixedly connected to the corresponding electric push rods 2, and the output ends of a pair of electric push rods 2 pass through the corresponding vertical plates of the bracket and are fixedly connected to the corresponding arc-shaped clamping plates. The lower sides of a pair of arc-shaped clamping plates are attached to the upper side of the base, and the opposite sides of a pair of arc-shaped clamping plates are covered with a soft rubber layer.
[0008] The present invention is further configured as follows: the upper opening of the compacting barrel is threadedly connected to a cylinder with an inverted frustum-shaped feed port, the lower end of the discharge pipe is located above the inverted frustum-shaped feed port, the inverted frustum-shaped feed port facilitates the mixed raw materials to enter the compacting barrel, and the compacting barrel is placed in the slot.
[0009] The present invention is further configured as follows: the clamping groove is a U-shaped groove composed of a semicircular groove connected to a straight groove, the compacting plate is a circular plate, and the compacting plate, the compacting barrel, the arc surface of a pair of the arc-shaped clamping plates and the semicircular groove of the clamping groove are concentric.
[0010] The present invention is further configured as follows: a circular opening is provided at the bottom of the compacting barrel, the bottom plate of the compacting barrel is a circular detachable bottom plate, the diameter of the bottom plate of the compacting barrel is greater than the diameter of the circular opening at the bottom of the compacting barrel, and the bottom plate of the compacting barrel is placed at the bottom of the compacting barrel to facilitate demolding of the compacted material.
[0011] The present invention is further configured as follows: the compacting barrel is a stainless steel barrel of φ50*100mm.
[0012] The present invention is further configured such that: the distance between the sprocket located below and the upper side of the bracket is greater than the length of the lifting rod, thereby avoiding interference when the lifting rod slides along the chain track.
[0013] The present invention is further configured as follows: the upper side of the mixing box is fixedly connected to an inverted trapezoidal feed opening.
[0014] The present invention is further configured such that: the length of the lifting rod is greater than the distance between the round rod and the mounting plate.
[0015] The present invention is further configured as follows: the operating screen is composed of a display and buttons, and is used to set the number of rotations of the sprocket.
[0016] The present invention is further configured such that: the pair of electric push rods are controlled in the same position.
[0017] The present invention is further configured as follows: the second motor is a speed-adjustable motor.
[0018] The present invention is further configured as follows: the highest position of the compacting plate driven by the round rod to slide is greater than the length of the compacting barrel after being connected to the inverted frustum-shaped feed port.
[0019] The present invention is further configured such that the outer diameter of the compacting plate matches the inner diameter of the compacting barrel.
[0020] The beneficial technical effects of the present invention are as follows: the present invention adopts an integrated design of a mixing box and a compacting structure, and the mixed material can directly enter the compacting barrel through the discharge pipe, and cooperate with a group of curved scrapers to scrape off the material attached to the inner wall of the mixing box, reducing the adhesion loss of the material during the traditional manual transfer process. The compacting structure drives the compacting plate up and down reciprocating motion through a motor-driven chain and sprocket mechanism, replacing manual compaction, with more uniform force, avoiding the problem of loose bonding at the layered interface. During the compaction process, the compacting barrel is fixed by a pair of curved splints to ensure that the mold has no displacement during the compaction process, avoiding uneven density of the sample. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 The three-dimensional structure of the present invention is shown Figure 1 .
[0022] Figure 2 The three-dimensional structure of the present invention is shown Figure 2 .
[0023] Figure 3 The three-dimensional structure of the present invention is shown Figure 3 .
[0024] Figure 4 The three-dimensional structure of the present invention is shown Figure 4 .
[0025] Figure 5 It shows a schematic diagram of the three-dimensional structure of the mixing box 4 and the compacting barrel 9 after being cut.
[0026] Figure 1: Operation screen, 2: Guide rod, 3: Chain, 4: Mixing box, 5: Bracket, 6: Electric push rod 2, 7: Arc-shaped splint, 8: Compacting plate, 9: Compacting barrel, 10: Round rod, 11: Lifting rod, 12: Electric push rod 1, 13: Sprocket, 14: Mixing shaft, 15: Arc-shaped scraper, 16: Sealing door, 17: Motor 1, 18: Discharge pipe, 19: Motor 2. DETAILED DESCRIPTION
[0027] Please refer to the attached Figure 1-Figure 5 It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.
[0028] The present invention proposes a sample preparation device for testing sandstone-like materials. Before use, the compacting plate 8 is in the lowest position, the lifting rod 11 is in a position separated from the round rod 10, the output end of the electric push rod 12 is in an extended state, the sealing door 16 blocks the discharge pipe 18, and a pair of arc-shaped clamping plates 7 are in a position with the farthest relative distance. When using this device, the required mixed solid raw materials are poured into the mixing box 4 in proportion (that is, quartz sand, cement, gypsum and talcum powder are poured into the mixing box 4 in a designed proportion), and a cover plate is placed on the inverted trapezoidal feed port to prevent solid powder from flying out during subsequent mixing. Start the motor 2 19 through the operation screen 1 (the start and adjustment of subsequent electrical components are controlled by the operation screen 1 by default), the motor 2 19 drives the stirring shaft 14 to rotate, the stirring shaft 14 drives a set of stirring rods and corresponding arc scrapers 15 to rotate, the arc scrapers 15 slide along the stirring box 4, the arc scrapers 15 scrape off the powder attached to the inner wall of the stirring box 4, and the powder is evenly stirred under the cooperation of the stirring rod and the arc scraper 15. After the solid powder is evenly mixed, turn off the motor 2 19, let it stand for a while to avoid the powder flying out when the cover is opened, and pour the evenly stirred liquid raw materials into the stirring box 4 (i.e. glutamic acid). The sodium glutamate solution is prepared by mixing sodium glutamate crystals with water in a ratio of 2:5. After standing for 1 hour, solid impurities are filtered out through filter paper to prepare a saturated sodium glutamate solution. Then, a water reducer of corresponding mass is added to the saturated sodium glutamate solution and fully stirred to dissolve). The cover is covered again and the motor 2 19 is started to stir and mix the solid raw materials and the liquid raw materials. During stirring, the motor 17 is started. The motor 17 drives the corresponding sprocket 13 to rotate. One sprocket 13 drives the other sprocket 13 to rotate through the chain 3. The rotation of the pair of sprockets 13 drives the chain 3 to slide. The chain 3 drives one end of the lifting rod 11 along a pair of arranged The plates slide along the trajectory of the chain 3 (the sliding trajectory of the chain 3 is that the lifting rod 11 slides upward when it is located on the side close to the round rod 10, and vice versa). When the lifting rod 11 slides upward through the bottom of the chain 3, the upper side of the lifting rod 11 fits the lower side of the round rod 10 and drives the round rod 10 to slide upward, and the round rod 10 drives a pair of guide rods 2 to slide upward, and the pair of guide rods 2 drives the compacting plate 8 to slide upward. When the lifting rod 11 drives the compacting plate 8 to slide to a position close to the highest position through the round rod 10 and the pair of guide rods 2 (that is, the lifting rod 11 slides to the position of the inflection point at the upper end of the sprocket 13), the motor 17 is turned off. Figure 1As shown, after lifting the compacting plate 8, put the bottom plate of the compacting barrel 9 into the compacting barrel 9, screw the inverted cone-shaped feed port on the upper end of the compacting barrel 9, place the compacting barrel 9 in the slot, push the compacting barrel 9 inward, fit it into the semicircular groove of the slot, start a pair of electric push rods 2 6, and the output ends of a pair of electric push rods 2 6 extend to drive the corresponding arc splints 7 to slide in the direction of approaching each other. When the output ends of a pair of electric push rods 2 6 are all extended, they are automatically closed. At this time, the opposite side of a pair of arc splints 7 is tightly fitted with the compacting barrel 9, fixing the compacting barrel 9 while ensuring that the compacting barrel 9 and the compacting plate 8 are in a concentric relationship. When the solid and liquid raw materials are evenly mixed, adjust the motor 2 19 to slow speed (so that a group of arc scrapers 15 will be attached to the mixing box 4 The mixture on the inner wall is scraped off to reduce the waste of the mixture), the electric push rod 12 is started, and the output end of the electric push rod 12 retracts to drive the sealing door 16 to slide downward. When the output end of the electric push rod 12 is fully retracted and closed, the mixed material falls into the compacting barrel 9 along the discharge pipe 18. After a part of the mixture falls in (about 1 / 5 of the mixture), the sealing door 16 is closed again, and the motor 17 is started. The sprocket 13 is adjusted to rotate 20 times. The motor 17 drives the lifting rod 11 to continue to slide. When the lifting rod 11 scrapes along the semicircular track above, the lifting rod 11 continues to drive the round rod 10 to slide upward until it is separated from the round rod 10. At this time, the compacting plate 8 slides downward rapidly under the action of its own gravity to compact the material once, such as Figure 2As shown, when the lifting rod 11 slides to the state of being in contact with the round rod 10 again, the compacting plate 8 is lifted again by the round rod 10 and a pair of guide rods 2. After the lifting rod 11 is separated from the round rod 10 again, the compacting plate 8 compacts the material for the second time, and so on, until the compacting plate 8 compacts the first layer of material 20 times, the motor 17 stops running, the sealing door 16 is opened again, the second layer of material is poured on the material compacted once, and the sealing door 16 is closed, and the motor 17 is started again. The two layers of material are compacted for the second time through the compacting plate 8 (still 20 times), and the mixture is poured into the compacting barrel 9 in multiple times. Each layer is compacted 20 times with the compacting plate 8. After all the mixed materials are compacted, the compacting plate 8 is raised to a position above the inverted frustum-shaped feed port, and a pair of electric push rods 6 are started again to unfasten the fixation of the compacting barrel 9, remove the compacting barrel 9, unscrew the inverted frustum-shaped feed port, turn the compacting barrel 9 upside down, and knock on the detachable The bottom plate is used to demould the material. The demoulded material is immediately wrapped with plastic wrap and numbered, and placed in a standard curing box with a temperature of (20 ± 2°C) and a humidity of ≥95% for curing for 28 days to form a standard sample. Three parallel samples are prepared for each test group, totaling 48 samples, and then density test, UCS test and penetration test are carried out. The present application adopts an integrated design of the mixing box 4 and the compacting structure. The mixed material can directly enter the compacting barrel 9 through the discharge pipe 18, and cooperate with a group of arc scrapers 15 to scrape off the material attached to the inner wall of the mixing box, reducing the adhesion loss of the material in the traditional manual transfer process. The compacting structure drives the chain 3 and the sprocket 13 mechanism through the motor 17 to drive the compacting plate 8 to move up and down, instead of manual compaction, so that the compaction force is more uniform, avoiding the problem of loose bonding at the layered interface. During the compaction process, the compacting barrel 9 is fixed by a pair of arc splints 7 to ensure that the mold is not displaced during the compaction process to avoid uneven density of the sample.
[0029] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and equivalent components may be substituted without departing from the scope of the present invention. In particular, the various technical features described in the various embodiments may be combined in any manner as long as no structural conflicts exist. The present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.
Claims
1. A sample preparation device for testing sandstone-like materials, comprising a base, a stirring box (4) and a bracket (5), characterized in that: A slot is provided at one end of the upper side of the base, and the bracket (5) is fixedly connected to the upper end of the base corresponding to the slot. The mixing box (4) is placed on the other side of the base. The mixing box (4) is fixed to the base via a pair of support plates. A compacting structure is installed on the bracket (5), and a mixing structure is installed in the mixing box (4). The compacting structure comprises a pair of mounting plates, a chain (3), a pair of sprockets (13), a motor (17), a lifting rod (11), a pair of guide rods (2), a round rod (10), a compacting plate (8) and an operating screen (1); The bracket (5) is a U-shaped bracket, the operation screen (1) is placed on one end of the upper side of the horizontal plate of the bracket (5), a pair of the mounting plates are placed on the other end of the upper side of the horizontal plate of the bracket (5), the upper and lower ends of the opposite sides of the pair of mounting plates are respectively connected to the mounting shafts of the corresponding sprockets (13), the pair of sprockets (13) are connected by the chain (3), the motor (17) is placed on one side of the mounting plate, and the output end of the motor (17) passes through the corresponding mounting plate and A mounting shaft of the sprocket (13) is fixedly connected, one end of the lifting rod (11) is fixedly connected to the outside of the chain (3), both sides of one end of the lifting rod (11) fit between a pair of mounting plates, the other end of the lifting rod (11) exceeds the pair of mounting plates, the upper sides of a pair of guide rods (2) are respectively fixedly connected to one end of the round rod (10), the lower ends of a pair of guide rods (2) slide through the horizontal plate of the bracket (5), and the lower ends of a pair of guide rods (2) are fixedly connected to the compacting plate (8).
2. The sample preparation device for testing sandstone-like materials according to claim 1, characterized in that: The mixing structure includes a discharge pipe (18), a second motor (19), a stirring shaft (14), a set of stirring rods and a set of arc-shaped scrapers (15); The lower part of one end of the mixing box (4) close to the bracket (5) is fixedly connected to the discharge pipe (18), and the other end of the mixing box (4) is fixedly connected to the motor 2 (19). The output end of the motor 2 (19) passes through the mixing box (4) and is fixedly connected to the mixing shaft (14). The other end of the mixing shaft (14) is connected to one end inside the mixing box (4) by a bearing. The outside of the mixing shaft (14) is fixedly connected to a group of evenly arranged mixing rods. The other ends of a group of mixing rods are respectively fixedly connected to the corresponding arc scrapers (15). The outer sides of a group of arc scrapers (15) are in contact with the inner wall of the mixing box (4).
3. The sample preparation device for testing sandstone-like materials according to claim 2, characterized in that: A blocking assembly is installed at one end of the lower side of the mixing box (4), and the blocking assembly includes an electric push rod (12), a connecting plate and a sealing door (16); The electric push rod (12) is placed on one side of a support plate close to the bracket (5), the upper end of the output end of the electric push rod (12) is fixedly connected to the connecting plate, the upper end of the connecting plate is fixedly connected to the sealing door (16), the upper end of the sealing door (16) slides through the lower end of the mixing box (4), and the sealing door (16) matches the upper end of the discharge pipe (18).
4. The sample preparation device for testing sandstone-like materials according to claim 3, characterized in that: A clamping assembly is installed on the lower side of the two vertical plates of the bracket (5), and the clamping assembly includes a pair of electric push rods (6) and a pair of arc-shaped clamping plates (7); The lower outer sides of the two vertical plates of the bracket (5) are respectively fixedly connected to the corresponding electric push rods 2 (6), and the output ends of a pair of electric push rods 2 (6) respectively pass through the corresponding vertical plates of the bracket (5) and are fixedly connected to the corresponding arc-shaped clamping plates (7). The lower sides of the pair of arc-shaped clamping plates (7) are attached to the upper side of the base, and the opposite sides of the pair of arc-shaped clamping plates (7) are covered with a soft rubber layer.
5. The sample preparation device for testing sandstone-like materials according to claim 4, characterized in that: The upper opening of the compacting barrel (9) is threadedly connected to a cylinder with an inverted frustum-shaped feed port, the lower end of the discharge pipe (18) is located above the inverted frustum-shaped feed port, and the compacting barrel (9) is placed in the slot.
6. The sample preparation device for testing sandstone-like materials according to claim 5, characterized in that: The clamping groove is a U-shaped groove formed by connecting a semicircular groove and a straight groove, the compacting plate (8) is a circular plate, and the arcuate surfaces of the compacting plate (8), the compacting barrel (9), and a pair of the arc-shaped clamping plates (7) are concentric with the semicircular groove of the clamping groove.