An overflow fine sand filling slurry spread test device

Abstract

The application belongs to the overflow fine sand detection field, and particularly relates to a kind of overflow fine sand filling slurry spread test equipment.A kind of overflow fine sand filling slurry spread test equipment of improving detection accuracy, operation convenience and improving test efficiency, including support plate, horizontal electric track, vertical mounting plate, vertical electric track, lifting plate and the like;Horizontal electric track is symmetrically arranged on the top of support plate, vertical mounting plate is connected between the sliding block of horizontal electric track, and vertical electric track is symmetrically arranged on the front side of vertical mounting plate.The axis of the slump cylinder can be accurately aligned with the center of the circular ring by horizontal electric track and vertical electric track, ensuring the accuracy of the test, and also facilitating operation;The amount of test slurry can be quickly changed by the discharging device, and multiple tests can be easily performed, improving the practicality of the equipment.

Description

Technical Field

[0001] This invention belongs to the field of overflow fine sand detection, and in particular relates to a test device for the spread of overflow fine sand filling slurry. Background Technology

[0002] In the field of mine backfilling technology, overflow fine sand, as a common backfill aggregate, has flow properties that are one of the key parameters affecting the quality and efficiency of the backfill slurry formed by mixing it with cementitious materials and water. The spread test is an important method for evaluating the flowability and workability of backfill slurry, directly reflecting the slurry's ability to spread under its own weight, and providing a basis for optimizing mix design and guiding on-site construction.

[0003] Currently, the improved slump test method is commonly used to test the spread of overflow fine sand backfill slurry. The specific operation process is as follows: a standard slump cylinder is placed vertically on a glass plate pre-marked with multiple concentric circles, ensuring that the axis of the slump cylinder is aligned with the center of the concentric circles; then, the mixed backfill slurry is poured into the slump cylinder in layers, and the top is leveled with a steel ruler; after the slurry stabilizes, the slump cylinder is quickly lifted vertically upwards. At this time, the slurry expands outwards under its own weight, forming a spread shape. The spread of the slurry is obtained by measuring the diameter of the final spread surface (taking the average of two vertical directions).

[0004] Patent CN219162096U discloses a rapid and accurate testing device for the slump and spread of coal-based solid waste filling slurry. When testing the filling slurry, this device first pours the filling slurry into the slump cylinder, and then uses an electric telescopic rod to reciprocate, causing an electric hammer to uniformly tamp the filling slurry. This method has the following drawbacks:

[0005] First, the slurry is placed inside the slump cone for mixing. However, the slump cone is conical, which creates dead zones during the mixing process, preventing the slurry from being fully stirred. This affects the results of subsequent tests.

[0006] Secondly, after the mixing rod finishes mixing, it will carry out the slurry inside the slump cylinder, and the amount of slurry remaining on the mixing rod after each mixing is different, which will lead to errors in the amount of slurry tested.

[0007] Finally, this method still requires a long time when multiple tests are needed, and may even require multiple devices to be used simultaneously, resulting in high costs and inefficiency.

[0008] Therefore, there is an urgent need to develop a test device for the spread of overflow fine sand filling slurry that improves detection accuracy, ease of operation, and test efficiency. Summary of the Invention

[0009] In order to overcome the shortcomings of the prior art, the present invention provides an overflow fine sand filling slurry expansion test device that improves detection accuracy, operation convenience and test efficiency.

[0010] Technical Solution: A test device for the spreadability of overflow fine sand filling slurry, comprising a support plate, a transverse electric track, a vertical mounting plate, a lifting plate, a feeding device, a stirring mechanism, and a glass plate. The top of the support plate is symmetrically equipped with transverse electric tracks, and the sliders of the transverse electric tracks are connected to the vertical mounting plate. The front side of the vertical mounting plate is symmetrically equipped with vertical electric tracks, and the sliders of the vertical electric tracks are connected to the lifting plate. A feeding device is mounted on the lifting plate. The transverse and vertical electric tracks change the position of the feeding device, enabling feeding and testing at different positions. A stirring mechanism is located between the upper part of the vertical mounting plate and the feeding device. The stirring mechanism can only perform its stirring function when the feeding device is in the upper position. A glass plate is placed on top of the support plate, and the glass plate has multiple concentric rings of different diameters.

[0011] As a preferred embodiment of the present invention, the feeding device includes a feeding pipe, a valve, a slumping cylinder, a container, and stirring rods. A row of feeding pipes is installed at the bottom of the lifting plate via a transfer plate. Each feeding pipe is equipped with a valve. A slumping cylinder is detachably installed at the bottom end of the feeding pipe via a thread. The slumping cylinder is connected to the feeding pipe. A container is detachably and rotatably installed at the upper end of the feeding pipe. Multiple rows of vertical stirring rods are installed inside the container. The stirring rods are staggered.

[0012] As a preferred embodiment of the present invention, the feeding device further includes a cover plate, and the top of the container is rotatably mounted with the cover plate.

[0013] As a preferred embodiment of the present invention, the feeding device further includes a connecting block, a screw, a nut, and a slide cylinder. The connecting blocks are symmetrically arranged on the side of the slumping cylinder, and a screw is slidably arranged on each connecting block. Nuts are threadedly connected to the screws at the upper and lower parts of the connecting blocks. A slide cylinder is connected between the bottom ends of the screws, and the slide cylinder is slidably connected to the slumping cylinder.

[0014] As a preferred embodiment of the present invention, the stirring mechanism includes an electric push rod, a rack and a gear. The electric push rod is horizontally arranged on the upper rear side of the vertical mounting plate, and the rack is horizontally slidably arranged on the upper front side of the vertical mounting plate. The rack is connected to the telescopic end of the electric push rod. The gear is concentrically connected to the upper part of the container. When the container is in the upper position, the gear meshes with the rack.

[0015] As a preferred embodiment of the present invention, it further includes a pressing device. The pressing device is provided on the rear side of the top of the support plate. The pressing device includes a guide rod, a pressure plate, a spring, and a pull ring. The guide rods are symmetrically arranged on the left and right sides of the rear side of the top of the support plate. The pressure plate is slidably connected between the guide rods. The pressure plate is located above the rear side of the glass plate. The spring is connected between the pressure plate and the guide rod. The pull rings are symmetrically arranged on the top of the pressure plate.

[0016] As a preferred technical solution of the present invention, it further includes a cleaning mechanism. The cleaning mechanism is provided between the sliders of the transverse electric track. The cleaning mechanism includes a swing arm, a torsion spring and a pressure cylinder. A swing arm is rotatably provided on each slider of the transverse electric track. A torsion spring is provided at the rotation connection point of the swing arm. A pressure cylinder is rotatably installed between the front ends of the swing arms. The bottom of the pressure cylinder contacts the top of the glass plate.

[0017] As a preferred embodiment of the present invention, it further includes a heater, which is disposed between the outer sides of the container.

[0018] The present invention has the following advantages: the present invention can accurately adjust the position of the slump cylinder through the horizontal electric track and the vertical electric track, and the axis of the slump cylinder can be precisely aligned with the center of the ring, ensuring the accuracy of the test, and also facilitating the operation.

[0019] The amount of test slurry can be quickly changed through the feeding device, which facilitates multiple tests and improves the practicality and efficiency of the equipment.

[0020] By separating the slump cone and the container into two spaces, the container and the slump cone do not interfere with each other when the slurry is being mixed, and the slurry will not enter the slump cone. After the slurry is mixed, the slump cone is moved downward to the test site, the slurry is added into the slump cone, and then the test is carried out. This method overcomes the shortcomings of the traditional method of mixing raw materials in the slump cone, which leads to dead zones in the mixing of raw materials and carries materials out, resulting in errors in the raw materials in the slump cone, thus improving the accuracy of the experiment.

[0021] The cleaning mechanism cleans the glass plate surface by moving the vertical mounting plate forward to adjust its position using the horizontal electric track. This method can be used to clean the test slurry on the glass plate surface for easy reuse next time. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0023] Figure 2 This is a three-dimensional structural diagram of the feeding device of the present invention.

[0024] Figure 3 This is a three-dimensional structural diagram of the feeding device of the present invention with the cover plate removed.

[0025] Figure 4 This is a three-dimensional structural diagram of the stirring mechanism of the present invention.

[0026] Figure 5 This is a three-dimensional structural diagram of the clamping device of the present invention.

[0027] Figure 6 This is a three-dimensional structural diagram of the cleaning mechanism of the present invention.

[0028] Figure 7 This is a three-dimensional structural diagram of the bottom part of the collapse cylinder of the present invention.

[0029] Component names and numbers in the diagram: 1-Support plate, 2-Horizontal electric track, 3-Vertical mounting plate, 4-Vertical electric track, 5-Lifting plate, 6-Discharging device, 61-Discharge pipe, 62-Valve, 63-Slump cylinder, 64-Container, 65-Agitating rod, 66-Cover plate, 67-Connecting block, 68-Screw, 69-Nut, 610-Slide cylinder, 7-Agitating mechanism, 71-Electric push rod, 72-Rack, 73-Gear, 8-Glass plate, 9-Pressure device, 91-Guide rod, 92-Pressure plate, 93-Spring, 94-Pull ring, 10-Cleaning mechanism, 101-Swing arm, 102-Torsion spring, 103-Pressure cylinder, 11-Heater. Detailed Implementation

[0030] The following description is only a preferred embodiment of the present invention and does not limit the scope of protection of the present invention.

[0031] Example 1: A test device for the spread of overflow fine sand filling slurry, such as Figures 1-4 As shown, the system includes a support plate 1, a horizontal electric track 2, a vertical mounting plate 3, a vertical electric track 4, a lifting plate 5, a feeding device 6, a mixing mechanism 7, and a glass plate 8. The top of the support plate 1 is symmetrically fixed with bolts to the horizontal electric track 2. The sliders of the horizontal electric track 2 are fixedly connected to the vertical mounting plate 3 with bolts. The horizontal electric track 2 drives the vertical mounting plate 3 to move back and forth. The front side of the vertical mounting plate 3 is symmetrically fixed with bolts to the vertical electric track 4. The sliders of the vertical electric track 4 are fixedly connected to the lifting plate 5 with bolts. The vertical electric track 4 drives the lifting plate... 5. Vertical movement is performed. A discharge device 6 is provided on the lifting plate 5. The discharge device 6 stores the slurry to be tested. The horizontal electric track 2 and the vertical electric track 4 change the position of the discharge device 6 to achieve discharge at different positions. A stirring mechanism 7 is provided between the upper part of the vertical mounting plate 3 and the discharge device 6. The stirring mechanism 7 can only perform the stirring function when the discharge device 6 is in the upper position. The slurry is mixed by rotation. A glass plate 8 is placed on the top of the support plate 1. There are multiple concentric rings of different diameters on the glass plate 8. When the discharge device 6 discharges the slurry, the axis of the discharge device 6 coincides with the center of the ring in the vertical direction.

[0032] In use: First, the slurry is stored in the dispensing device 6. The slurry concentration in the dispensing device 6 varies. After the slurry is placed, the stirring mechanism 7 is controlled to mix the slurry evenly. Then, the horizontal electric track 2 is used to change the horizontal position of the dispensing device 6. Then, the vertical electric track 4 is used to move the dispensing device 6 downward until the bottom of the dispensing device 6 presses against the upper surface of the glass plate 8. Then, the dispensing device 6 is opened. After the slurry in the dispensing device 6 stabilizes at the bottom, the dispensing device 6 is closed and the vertical electric track 4 is used to move the dispensing device 6 upward to reset it. At this time, the slurry in the lower part of the dispensing device 6 expands to the surroundings under its own weight to form a spreading shape. By measuring the diameter of the final spread surface (taking the average of two vertical directions), the spread of the slurry is obtained. Then, the test results are obtained by comparing each spread slurry. At the same time, the test can be repeated several times to improve the accuracy of the test.

[0033] like Figure 2 and Figure 3 As shown, the discharge device 6 includes a discharge pipe 61, a valve 62, a slump cylinder 63, a container 64, a stirring rod 65, and a cover plate 66. A row of downward-extending discharge pipes 61 is installed at the bottom of the lifting plate 5 via a transition plate. Each discharge pipe 61 is equipped with a valve 62, which controls the opening and closing of the discharge pipe 61. A slump cylinder 63 is detachably attached to the bottom end of the discharge pipe 61 via a thread. By replacing different sized slump cylinders 63, different volumes of slurry can be tested. The slump cylinder 63 is connected to the discharge pipe 61. A container 64 is detachably and rotatably mounted on the upper part of the container 61. The container 64 can be detached for easy cleaning. The container 64 can also rotate and work together with the stirring mechanism 7 to achieve uniform mixing of the slurry. Multiple rows of vertical stirring rods 65 are set inside the container 64. The stirring rods 65 are staggered, which can change the mixing path of the slurry, thereby improving the mixing efficiency and quality of the slurry. A cover plate 66 is rotatably mounted on the top of the container 64. When the container 64 is filled with slurry, the cover plate 66 protects the slurry.

[0034] The slurry to be tested is placed in container 64. Then, a slump cone 63 of appropriate size is replaced as needed and screwed onto the feed pipe 61. The mixing mechanism 7 then rotates container 64, which in turn rotates the mixing rod 65, ensuring the slurry in container 64 is thoroughly mixed. The horizontal electric track 2 then moves container 64 to a designated position, while the vertical electric track 4 moves the lifting plate 5 and its upper device downwards, causing container 64 and its upper device to move downwards. Once the bottom of slump cone 63 contacts the top of glass plate 8, the vertical electric track 4 stops operating. Then, valve 62 is opened, allowing the slurry in container 64 to enter slump cone 63. Inside, after the slurry in the slump cylinder 63 has stabilized, valve 62 is closed, and container 64 and its upper device are moved upward and reset via vertical electric rail 4. The slump cylinder 63 and container 64 of this application can be divided into two spaces. When the slurry is stirred, container 64 and slump cylinder 63 do not interfere with each other, and the slurry will not enter the slump cylinder 63. After the slurry is mixed, slump cylinder 63 is moved downward to the test site, the slurry is added into slump cylinder 63, and then the test is carried out. This method overcomes the shortcomings of the traditional method of stirring raw materials in slump cylinder 63, which results in dead corners in the stirring of raw materials and carries materials out, causing errors in the raw materials in slump cylinder 63.

[0035] Example 2: As Figure 7 As shown, to improve the practicality of this device, the feeding device 6 also includes a connecting block 67, a screw 68, a nut 69, and a slide cylinder 610. Connecting blocks 67 are symmetrically arranged on the left and right sides of the slump cylinder 63. A screw 68 is slidably mounted on each connecting block 67. Nuts 69 are threadedly connected to the upper and lower screws 68 of the connecting block 67, fixing the position of the screws 68. A slide cylinder 610 is connected between the bottom ends of the screws 68, and the slide cylinder 610 is slidably connected to the slump cylinder 63. When it is necessary to increase the amount of test slurry, the two nuts 69 are screwed downwards. The movement causes the slide 610 to move downwards, increasing the volume of the slide 610 and slump cylinder 63 combined. After the volume of the slide 610 and slump cylinder 63 is adjusted, the two nuts 69 are stopped. When it is necessary to reduce the amount of test slurry, the two nuts 69 are turned upwards, causing the slide 610 to move upwards, decreasing the volume of the slide 610 and slump cylinder 63 combined. After the volume of the slide 610 and slump cylinder 63 is adjusted, the two nuts 69 are stopped. This method is suitable when there is no slump cylinder 63 available for replacement and multiple tests with different amounts are required.

[0036] like Figure 4As shown, the stirring mechanism 7 includes an electric push rod 71, a rack 72, and a gear 73. The electric push rod 71 is horizontally fixed to the upper rear side of the vertical mounting plate 3 by bolts. The rack 72 is horizontally slidably mounted on the upper front side of the vertical mounting plate 3. The rear of the rack 72 is connected to the telescopic end of the electric push rod 71. The electric push rod 71 drives the rack 72 to move horizontally. The gear 73 is concentrically connected to the upper part of the container 64. When the container 64 is in the upper position, the gear 73 meshes with the rack 72. When the slurry in the container 64 needs to be stirred, the electric push rod 71 is controlled to continuously extend and retract, driving the rack 72 to move left and right, which in turn drives the gear 73 to rotate clockwise and counterclockwise, causing the container 64 to rotate clockwise and counterclockwise, thus stirring the slurry in the container 64. After the material is mixed evenly, the electric push rod 71 is controlled to stop working.

[0037] like Figure 5 As shown, to ensure the stability of the equipment test, a clamping device 9 is also included. The clamping device 9 is provided on the rear side of the top of the support plate 1. The clamping device 9 includes a guide rod 91, a pressure plate 92, a spring 93, and a pull ring 94. The guide rods 91 are vertically arranged symmetrically on the rear side of the top of the support plate 1. The pressure plate 92 is slidably connected between the guide rods 91. The pressure plate 92 is above the rear side of the glass plate 8 and presses the glass plate 8 tightly against the top of the support plate 1 to prevent the glass plate 8 from shifting during the test. The spring 93 is connected between the pressure plate 92 and the guide rod 91. The spring 93 applies vertical pressure to the pressure plate 92 to reinforce the glass plate 8. The pull rings 94 are symmetrically arranged on the top of the pressure plate 92 to facilitate the pulling of the pressure plate 92 and the replacement of the glass plate 8.

[0038] like Figure 6 As shown, it also includes a cleaning mechanism 10. The cleaning mechanism 10 is set between the sliders of the transverse electric track 2. The cleaning mechanism 10 includes a swing arm 101, a torsion spring 102 and a pressure cylinder 103. The swing arms 101 are rotatably mounted on the sliders of the transverse electric track 2. The swing arms 101 on the left and right sides are symmetrically installed. The torsion spring 102 is set at the rotation connection point of the swing arm 101. The torsion spring 102 applies downward pressure to the swing arm 101. The pressure cylinder 103 is rotatably mounted between the front ends of the swing arms 101. The bottom of the pressure cylinder 103 contacts the top of the glass plate 8. When the transverse electric track 2 drives the vertical mounting plate 3 to move forward to adjust the position, the pressure cylinder 103 cleans the surface of the glass plate 8. This method can be used to clean the test slurry on the surface of the glass plate 8 for easy use next time.

[0039] like Figure 1 As shown, it also includes a heater 11, which is disposed between the outer sides of the container 64; during the test, the heater 11 works to keep the slurry inside the container 64 stable, so that the slurry inside the container 64 does not solidify.

[0040] Although this disclosure has been shown and described with reference to specific exemplary embodiments thereof, those skilled in the art will understand that various changes in form and detail may be made to this disclosure without departing from the spirit and scope of the disclosure as defined by the appended claims and their equivalents. Therefore, the scope of this disclosure should not be limited to the above embodiments, but should be defined not only by the appended claims, but also by their equivalents.

Claims

1. A test device for the spread of overflow fine sand filling slurry, characterized in that: It includes a support plate (1), a horizontal electric track (2), a vertical mounting plate (3), a vertical electric track (4), a lifting plate (5), a feeding device (6), a stirring mechanism (7), and a glass plate (8). The top of the support plate (1) is symmetrically equipped with a horizontal electric track (2). The sliders of the horizontal electric track (2) are connected to the vertical mounting plate (3). The front side of the vertical mounting plate (3) is symmetrically equipped with a vertical electric track (4). The sliders of the vertical electric track (4) are connected to the lifting plate (5). A feeding device (6) is provided on the lifting plate (5). The horizontal electric track (2) and the vertical electric track (4) change the position of the feeding device (6) to realize multiple tests of feeding at different positions. A stirring mechanism (7) is provided between the upper part of the vertical mounting plate (3) and the feeding device (6). The stirring mechanism (7) can only realize the stirring function when the feeding device (6) is in the upper position. A glass plate (8) is placed on the top of the support plate (1). There are multiple concentric rings of different diameters on the glass plate (8). The feeding device (6) includes a feeding pipe (61), a valve (62), a slump cylinder (63), a container (64), and a stirring rod (65). A row of feeding pipes (61) is installed at the bottom of the lifting plate (5) through a transition plate. Each feeding pipe (61) is equipped with a valve (62). The bottom end of the feeding pipe (61) is detachably equipped with a slump cylinder (63) through a thread. The slump cylinder (63) is connected to the feeding pipe (61). The upper end of the feeding pipe (61) is detachably and rotatably equipped with a container (64). Multiple rows of vertical stirring rods (65) are installed inside the container (64). The stirring rods (65) are staggered. The feeding device (6) also includes a connecting block (67), a screw (68), a nut (69) and a slide cylinder (610). The connecting blocks (67) are symmetrically arranged on the side of the slump cylinder (63). A screw (68) is slidably arranged on each connecting block (67). Nuts (69) are threadedly connected to the screws (68) at the top and bottom of the connecting block (67). A slide cylinder (610) is connected between the bottom ends of the screws (68). The slide cylinder (610) is slidably connected to the slump cylinder (63). The stirring mechanism (7) includes an electric push rod (71), a rack (72) and a gear (73). The electric push rod (71) is horizontally arranged on the upper rear side of the vertical mounting plate (3), and the rack (72) is horizontally slidably arranged on the upper front side of the vertical mounting plate (3). The rack (72) is connected to the telescopic end of the electric push rod (71). The gear (73) is connected to the upper part of the container (64) by a concentric key. When the container (64) is in the upper position, the gear (73) meshes with the rack (72).

2. The overflow fine sand filling slurry expansion test equipment according to claim 1, characterized in that: The discharge device (6) also includes a cover plate (66), which is rotatably mounted on the top of the container (64).

3. The overflow fine sand filling slurry expansion test equipment according to claim 1, characterized in that: It also includes a pressing device (9). The pressing device (9) is provided on the rear side of the top of the support plate (1). The pressing device (9) includes a guide rod (91), a pressure plate (92), a spring (93) and a pull ring (94). The guide rods (91) are symmetrically arranged on the rear side of the top of the support plate (1). The pressure plate (92) is slidably connected between the guide rods (91). The pressure plate (92) is above the rear side of the glass plate (8). The spring (93) is connected between the pressure plate (92) and the guide rod (91). The pull ring (94) is symmetrically arranged on the top of the pressure plate (92).

4. The overflow fine sand filling slurry expansion test equipment according to claim 1, characterized in that: It also includes a cleaning mechanism (10). The cleaning mechanism (10) is set between the sliders of the transverse electric track (2). The cleaning mechanism (10) includes a swing arm (101), a torsion spring (102) and a pressure cylinder (103). The swing arm (101) is rotatably set on the slider of the transverse electric track (2). The torsion spring (102) is set at the rotation connection point of the swing arm (101). The pressure cylinder (103) is rotatably installed between the front ends of the swing arm (101). The bottom of the pressure cylinder (103) contacts the top of the glass plate (8).

5. The overflow fine sand filling slurry expansion test equipment according to claim 1, characterized in that: It also includes a heater (11), which is disposed between the outer sides of the container (64).

Images