Auxiliary equipment for cement density detection
By designing the support and limiting parts, combining the magnetic repulsion principle and rotating push rod auxiliary equipment, the problem of difficulty in quickly loading cement samples into Li's specific gravity bottle is solved, and fast and accurate cement density detection is achieved.
Patent Information
- Application Number
- CN202422462042.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-12
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-10-12
AI Technical Summary
In traditional cement density testing, it is difficult to quickly and conveniently load the cement samples into the Li's specific gravity bottle, which easily blocks the funnel tube and affects the test efficiency.
An auxiliary device including a bracket, limiting member and feeding assembly was designed. Using the principle of magnetic repulsion and rotary push rod, the rapid positioning of the Li's specific gravity bottle and the automatic placement of cement samples were achieved to avoid clogging.
It realizes rapid and accurate loading of cement samples, improves detection efficiency, reduces blockage, and simplifies the operation process.
Smart Images
Figure CN223259502U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cement density detection auxiliary equipment, and is an auxiliary equipment used for cement density detection. Background Art
[0002] Cement density is the mass of cement per unit volume under dry conditions, and its unit is g / cm 3 The Levin flask method is a commonly used method for measuring cement density. It is applicable to the density of Portland cement, ordinary Portland cement, slag Portland cement, fly ash Portland cement, pozzolana Portland cement, composite Portland cement, road Portland cement, and other powdered materials specified to use this method. The principle of the Levin flask method is to pour cement into a Levin flask filled with a certain amount of liquid medium and allow the liquid medium to fully penetrate the cement particles. According to Archimedes' principle, the volume of cement is equal to the volume of liquid it displaces. The density is calculated as the mass of cement per unit volume. In order to prevent the measured cement from undergoing hydration reaction, anhydrous kerosene is used as the liquid medium.
[0003] Traditional cement density testing involves adding a small amount of cement sample to a Lee pycnometer using a spoon, which is time-consuming and laborious. The cement, when added to the pycnometer, has difficulty falling through the long mouth of the Lee pycnometer, which can easily clog the funnel and affect test efficiency. Utility Model Content
[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an auxiliary device for cement density detection, which can be quickly installed and positioned with a Lee's pycnometer and is convenient for quickly loading cement samples.
[0005] The technical solution adopted by the present invention is as follows: the present invention includes a bracket, two groups of limiting members rotatably connected to the bracket, and a feeding assembly arranged on the upper part of the bracket, the two groups of limiting members cooperate to form a limiting space for clamping the Lee's pycnometer, the feeding assembly includes a lifting drive device fixedly connected to the bracket, an adjusting screw rod arranged at the movable end of the lifting drive device, a lifting block slidingly matched with the bracket, and a feeding cup arranged at one end of the lifting block, the lifting block is threadedly connected to the adjusting screw rod, the feeding cup is formed with a mounting frame, the mounting frame is provided with a pushing drive device, and the movable end of the pushing drive device is connected to a rotating push rod for feeding cement into the Lee's pycnometer.
[0006] Furthermore, the bracket is formed with a mounting groove, and the limiting member is provided with a supporting plate, a connecting plate and a limiting plate from bottom to top. The supporting plate is rotatably connected to the mounting groove, the supporting plate is formed with a guide groove for cooperating with the guide of the Lee's pycnometer, the connecting plate is formed with a handle for pulling, and the limiting plate is formed with a limiting groove for clamping the Lee's pycnometer.
[0007] Furthermore, each of the support plates is provided with a clamping block on both sides, and a plurality of clamping slots for snap-fitting with the clamping block are correspondingly provided on both sides of the installation slot.
[0008] Furthermore, two first magnetic members are provided at the bottom of each support plate, and a plurality of second magnetic members that correspond one-to-one to the first magnetic members and magnetically repel each other are provided at the bottom of the mounting slot.
[0009] Furthermore, the limiting groove is provided with a sheath that fits the Lee pycnometer.
[0010] Furthermore, the limiting member is in a "C" shape.
[0011] Furthermore, a feeding port with a diameter gradually decreasing from top to bottom is formed on the upper portion of the feeding cup, and a discharging port with a diameter gradually decreasing from top to bottom is formed on the lower portion of the feeding cup.
[0012] The beneficial effects of the present invention are as follows: since the two groups of limit members of the present invention are symmetrically arranged in the mounting groove and can be opened to the left and right sides, the first magnetic member arranged at the bottom of the limit member and the second magnetic member arranged at the bottom of the mounting groove magnetically repel each other, and under the action of magnetism, the two limit members remain in an open state before the Lee's pycnometer is placed in. When the Lee's pycnometer is placed in, the bottom of the bottle contacts and presses down the support plate, causing the two limit members to rotate relative to each other, and the limit groove located on the upper part of the limit member and the upper part of the Lee's pycnometer are clamped and limited to ensure that the cement sample does not deviate during the feeding process. When feeding, a pushing drive device is used to drive the rotating push rod, and the lower end of the rotating push rod extends into the Lee's pycnometer. The rotating push rod is a screw, which is used to squeeze the cement sample in the feeding cup into the Lee's pycnometer, reducing the accumulation of cement at the narrow mouth of the Lee's pycnometer. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a structural diagram of the utility model;
[0014] Figure 2 This is a schematic structural diagram of the support and feed assembly of the utility model;
[0015] Figure 3 yes Figure 2 A partial enlarged view of part A;
[0016] Figure 4 It is a cross-sectional view of the coupling between the feeding cup and the rotating push rod;
[0017] Figure 5 It is a structural diagram of the limiter of the utility model.
[0018] In the figure: 1. bracket; 11. mounting slot; 12. clamping slot; 13. second magnetic part; 2. limiting part; 21. supporting plate; 22. connecting plate; 23. limiting plate; 24. guide groove; 25. handle; 26. limiting slot; 27. clamping block; 28. first magnetic part; 29. sheath; 3. feeding assembly; 31. lifting drive device; 32. adjusting screw rod; 33. lifting block; 34. feeding cup; 341. feeding port; 342. discharging port; 35. mounting frame; 36. pushing drive device; 37. rotating push rod. DETAILED DESCRIPTION
[0019] like Figures 1 to 5 As shown, in this embodiment, the utility model includes a bracket 1, two groups of limit members 2 rotatably connected to the bracket 1, and a feeding assembly 3 arranged on the upper part of the bracket 1, the two groups of limit members 2 cooperate to form a limiting space for clamping the Li's pycnometer, the feeding assembly 3 includes a lifting drive device 31 fixedly connected to the bracket 1, an adjusting screw 32 arranged at the movable end of the lifting drive device 31, a lifting block 33 slidingly matched with the bracket 1, and a feeding cup 34 arranged at one end of the lifting block 33, the lifting block 33 is threadedly connected to the adjusting screw 32, the feeding cup 34 is formed with a mounting bracket 35, the mounting bracket 35 is provided with a pushing drive device 36, the movable end of the pushing drive device 36 is connected to a rotating push rod 37 for feeding cement to the Li's pycnometer, the lifting drive device 31 and the pushing drive device 36 are both rotating motors, the lifting drive device 31 outputs torque to drive the adjusting screw 32 to rotate, and the adjusting screw The rod 32 moves the lifting block 33 up and down through the thread, adjusting the height of the feeding cup 34 and the rotating push rod 37, making it convenient to put in and take out the Li's pycnometer. The two sets of limiters 2 are symmetrically arranged in the installation groove 11 and can be opened to the left and right sides. The first magnetic member 28 arranged at the bottom of the limiter 2 and the second magnetic member 13 arranged at the bottom of the installation groove 11 magnetically repel each other. Under the action of magnetism, the two limiters 2 remain in the open state before the Li's pycnometer is put in. When the Li's pycnometer is put in, the bottom of the bottle touches the The support plate 21 is touched and pressed down, so that the two limit members 2 rotate relative to each other. The limit groove 26 located on the upper part of the limit member 2 is clamped and limited with the upper part of the Lee's pycnometer to ensure that the cement sample does not deviate during the feeding process. When feeding, the pushing drive device 36 is used to drive the rotating push rod 37. The lower end of the rotating push rod 37 extends into the Lee's pycnometer. The rotating push rod 37 is a screw, which is used to squeeze the cement sample in the feeding cup 34 into the Lee's pycnometer to reduce the accumulation of cement at the narrow mouth of the Lee's pycnometer.
[0020] In this embodiment, the bracket 1 is formed with a mounting groove 11, and the limiting member 2 is provided with a supporting plate 21, a connecting plate 22 and a limiting plate 23 from bottom to top. The supporting plate 21 is rotatably connected to the mounting groove 11, and the supporting plate 21 is formed with a guide groove 24 for cooperating with the guide of the Lee's pycnometer. The connecting plate 22 is formed with a handle 25 for pulling, and the limiting plate 23 is formed with a limiting groove 26 for clamping the Lee's pycnometer. Rotating holes are respectively provided at both ends of the mounting groove 11, and the supporting plate 21 is correspondingly provided with a rotating column cooperating with the corresponding rotating hole.
[0021] In this embodiment, a clamping block 27 is provided on both sides of each of the support plates 21, and a plurality of clamping slots 12 that snap into engagement with the clamping block 27 are correspondingly provided on both sides of the mounting groove 11. The clamping block 27 and the clamping slot 12 form a stable snap-fit structure when the Lie pycnometer is placed in, thereby reducing the situation where the position of the Lie pycnometer is offset due to excessive repulsive magnetic force.
[0022] In this embodiment, two first magnetic parts 28 are provided at the bottom of each support plate 21, and a plurality of second magnetic parts 13 that magnetically repel each other with the corresponding first magnetic parts 28 are provided at the bottom of the mounting groove 11. The first magnetic parts 28 and the second magnetic parts 13 are both permanent magnets. The repelling first magnetic parts 28 and the second magnetic parts 13 keep the two sets of limit parts 2 stable in the open state. When placing them in, the staff does not need to repeat the opening steps, which effectively simplifies the work process and improves the feeding efficiency.
[0023] In this embodiment, the limiting groove 26 is provided with a sheath 29 that fits with the Lee specific gravity bottle. The sheath 29 is made of rubber and has good elasticity, which reduces the extrusion force applied by the limiting member 2 on the bottleneck of the Lee specific gravity bottle and reduces the occurrence of damage.
[0024] In this embodiment, the limiting member 2 is C-shaped.
[0025] In this embodiment, the upper portion of the feeding cup 34 is formed with a feeding port 341 whose diameter gradually decreases from top to bottom, and the lower portion of the feeding cup 34 is formed with a discharging port 342 whose diameter gradually decreases from top to bottom. The diameter of the lower opening of the feeding cup 34 is equal to the diameter of the rotating push rod 37.
[0026] The working principle of this utility model:
[0027] Before use, the lifting block 33 is located above the adjusting screw 32, the feeding cup 34 and the rotating push rod 37 are away from the insertion position of the Lee's pycnometer, and the two limit members 2 are in the open state;
[0028] When the Lee's pycnometer is placed, the bottom of the bottle contacts and presses down on the support plate 21. The gravity of the bottle body is greater than the mutual repulsion between the first magnetic member 28 and the second magnetic member 13, causing the two limiting members 2 to rotate around the rotating column. The slots 12 on both sides of the mounting groove 11 engage with the corresponding blocks 27 of the support plate 21 to complete the positioning. At this time, the limiting grooves 26 on the upper part of the limiting member 2 are clamped with the bottleneck of the Lee's pycnometer, and the sheath 29 is tightly fitted with the Lee's pycnometer.
[0029] When the cement sample is added, the lifting drive device 31 outputs torque to drive the adjusting screw 32. The adjusting screw 32 causes the lifting block 33 to move up and down through the thread, adjusting the height of the feeding cup 34 and the rotating push rod 37, so that the rotating push rod 37 extends into the Lee pycnometer. The staff puts the cement sample into the feeding cup 34. The cement sample is collected at the bottom along the cup wall, whose diameter gradually decreases from top to bottom. The pushing drive device 36 outputs torque to drive the rotating push rod 37 to push the cement sample into the Lee pycnometer in a quantitative manner, thereby reducing the accumulation of cement at the narrow mouth of the Lee pycnometer.
[0030] When exiting, the lifting drive device 31 drives the adjusting screw 32 to move the lifting block 33 upward, and the feeding cup 34 and the rotating push rod 37 move away from the Lee's pycnometer. The staff holds the Lee's pycnometer and applies a slight upward push to make the block 27 on the support plate 21 disengage from the slot 12. After disengagement, under the action of the first magnetic part 28 and the second magnetic part 13, the two limit parts 2 rotate under the action of the mutually repulsive magnetic force to release the limit on the Lee's pycnometer.
[0031] Although the embodiments of the present invention are described with practical solutions, they do not limit the meaning of the present invention. For those skilled in the art, it is obvious to modify the implementation scheme and combine it with other solutions based on this description.
Claims
1. An auxiliary device for cement density detection, characterized by: The invention comprises a bracket (1), two groups of limiting members (2) rotatably connected to the bracket (1), and a feeding assembly (3) arranged on the upper part of the bracket (1), wherein the two groups of limiting members (2) cooperate to form a limiting space for clamping the Li's pycnometer; the feeding assembly (3) comprises a lifting drive device (31) fixedly connected to the bracket (1), an adjusting screw rod (32) arranged at the movable end of the lifting drive device (31), a lifting block (33) slidingly matched with the bracket (1), and a feeding cup (34) arranged at one end of the lifting block (33); the lifting block (33) is threadedly connected to the adjusting screw rod (32); the feeding cup (34) is formed with a mounting frame (35); the mounting frame (35) is provided with a pushing drive device (36); the movable end of the pushing drive device (36) is connected to a rotating push rod (37) for feeding cement to the Li's pycnometer.
2. The auxiliary equipment for cement density detection according to claim 1, characterized in that: The bracket (1) is formed with a mounting groove (11), and the limiting member (2) is provided with a supporting plate (21), a connecting plate (22) and a limiting plate (23) from bottom to top. The supporting plate (21) is rotatably connected to the mounting groove (11), the supporting plate (21) is formed with a guide groove (24) for guiding the Lee's pycnometer, the connecting plate (22) is formed with a handle (25) for pulling, and the limiting plate (23) is formed with a limiting groove (26) for clamping the Lee's pycnometer.
3. The auxiliary equipment for cement density detection according to claim 2, characterized in that: Both sides of each support plate (21) are provided with clamping blocks (27), and both sides of the installation slot (11) are correspondingly provided with a plurality of clamping slots (12) that are snap-fitted with the clamping blocks (27).
4. The auxiliary equipment for cement density detection according to claim 2, characterized in that: Two first magnetic members (28) are provided at the bottom of each support plate (21), and a plurality of second magnetic members (13) that correspond one-to-one to the first magnetic members (28) and magnetically repel each other are provided at the bottom of the installation slot (11).
5. The auxiliary equipment for cement density detection according to claim 2, characterized in that: The limiting groove (26) is provided with a protective sheath (29) that fits the Lee pycnometer.
6. The auxiliary equipment for cement density detection according to claim 1, characterized in that: The limiting member (2) is in a "C" shape.
7. The auxiliary equipment for cement density detection according to claim 1, characterized in that: The upper portion of the feeding cup (34) is formed with a feeding port (341) whose diameter gradually decreases from top to bottom, and the lower portion of the feeding cup (34) is formed with a discharging port (342) whose diameter gradually decreases from top to bottom.