Sandstone fineness detection device

Abstract

The utility model discloses a gravel fineness detection device. The gravel fineness detection device comprises a vibration mechanism and a screening mechanism, the screening mechanism is located at the top end of the vibration mechanism, the screening mechanism comprises a plurality of screening boxes, screens are arranged in the screening boxes, the screens in the screening boxes are arranged from large to small, the vibration mechanism comprises a bottom plate and a placement groove, and the placement groove is located in the bottom plate. The placing groove is located at the top end of the bottom plate, a plurality of supporting legs are arranged on the bottom plate, a motor is placed in the middle of the bottom plate and connected with a rotating disc through a rotating shaft, protruding blocks are arranged on the left side and the right side of the rotating disc, pulleys are arranged on the left side and the right side of the bottom end of the placing groove, a plurality of side plates are arranged at the side end of the placing groove, and stand columns are arranged on the side plates. Compared with an existing sand and stone fineness detection device, the sand and stone fineness detection device has the advantages that the operation is simple and easy to execute, and the situation that the measurement result is inaccurate due to the influence of the external environment is not easily caused is avoided.

Description

Technical Field

[0001] This utility model relates to the field of sand and gravel fineness testing, and in particular to a sand and gravel fineness testing device. Background Technology

[0002] A sand and gravel fineness testing device is a device used to screen sand and gravel and measure the particle size distribution of sand and gravel particles.

[0003] With the rapid development of the construction industry, ready-mixed concrete is widely used on construction sites. The quality of concrete is greatly affected by the quality of sand and gravel materials, so it is necessary to ensure the quality of sand and gravel. One method for measuring the fineness of sand and gravel is the displacement measurement method. This involves immersing the sand and gravel in water and recording the amount of water displaced. The specific steps include placing a known weight of sand and gravel sample in water, observing the height the water level rises, and calculating the displacement. Ultimately, the specific gravity of the sample can be calculated using the displacement. However, this method is prone to water splashing during the measurement process, leading to inaccurate results. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a sand and gravel fineness detection device.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A sand and gravel fineness testing device includes a vibration mechanism and a screening mechanism. The screening mechanism is located at the top of the vibration mechanism and includes multiple sieve boxes, each containing a sieve mesh arranged from largest to smallest. The vibration mechanism includes a base plate and a placement groove, with the placement groove located at the top of the base plate. The base plate has several support legs, and a motor is placed in the center of the base plate. The motor is connected to a turntable via a rotating shaft. The turntable has protrusions on its left and right sides. The bottom of the placement groove has pulleys on its left and right sides, which are connected to the surface of the turntable. Several side plates are located at the side ends of the placement groove, each with a column. A top plate is located at the top of each column, and a hydraulic cylinder is placed on the top plate. The hydraulic cylinder passes through the top plate and is connected to a cover plate via a hydraulic rod.

[0007] Preferably, a plurality of sliders are provided at the side end of the cover plate. The sliders are hollow and are slidably connected to the column.

[0008] Preferably, a limiting plate is fixedly connected to the top of the support leg, and the limiting plate is provided with a plurality of limiting holes, and the pulley is slidably connected within the limiting holes.

[0009] Preferably, the sieve box is provided with several mounting blocks on both sides, and the mounting blocks are provided with hooks and locks.

[0010] Preferably, the bottom of the sieve box is provided with an insert block, and the top of the sieve box is provided with a slot. The upper sieve box and the lower sieve box are connected by inserting the insert block into the slot.

[0011] Preferably, the placement groove is lined with a soft material.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] (1) This utility model drives the turntable and the protrusion to rotate by starting the motor, so that the pulley at the bottom of the placement groove vibrates the top screen box when it passes the surface of the protrusion due to the height of the protrusion. The sand and gravel in the screen box are vibrated and screened to calculate the fineness. Compared with the existing sand and gravel fineness detection device, it is simple to operate and easy to execute, and is not easily affected by the external environment, which may lead to inaccurate measurement results.

[0014] (2) This utility model provides a slider on the side of the cover plate. When the cover plate is pushed by the hydraulic rod, the slider slides on the column to help disperse the pressure applied by the hydraulic rod, so that the cover plate is subjected to more uniform force and reduces local damage.

[0015] (3) This utility model fixes the movement trajectory of the pulley by sliding the pulley and the limiting hole, thereby increasing stability and preventing tilting or deviation. Attached Figure Description

[0016] Figure 1 A first-view structural schematic diagram of the sand and gravel fineness detection device provided by this utility model;

[0017] Figure 2 A second-view structural schematic diagram of the sand and gravel fineness detection device provided by this utility model;

[0018] Figure 3 A schematic diagram of the vibration mechanism structure of the sand and gravel fineness detection device provided by this utility model;

[0019] Figure 4 A schematic diagram of the cover plate structure of the sand and gravel fineness detection device provided by this utility model;

[0020] Figure 5 A schematic diagram of the screening mechanism structure of the sand and gravel fineness detection device provided by this utility model;

[0021] The corresponding names of the reference numerals in the attached drawings are as follows: 100, Vibration mechanism; 101, Base plate; 102, Support leg; 103, Motor; 104, Protrusion; 105, Limiting plate; 106, Limiting hole; 107, Hydraulic cylinder; 108, Top plate; 109, Hydraulic rod; 110, Cover plate; 111, Fixing bolt; 112, Column; 113, Slider; 114, Placement slot; 115, Side plate; 116, Pulley; 117, Turntable; 200, Screening mechanism; 201, Screen box; 202, Mounting block; 203, Hook; 204, Lock; 205, Screen mesh; 206, Insert block; 207, Slot. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments of the present invention include, but are not limited to, the following embodiments.

[0023] First embodiment:

[0024] like Figure 1-5As shown, the sand and gravel fineness testing device provided by this utility model includes: a vibration mechanism 100 and a screening mechanism 200. The screening mechanism 200 is located at the top of the vibration mechanism 100. The screening mechanism 200 includes a sieve box 201, and there are multiple sieve boxes 201, each of which is equipped with a sieve 205. The sieves 205 in the sieve box 201 are arranged from large to small. The vibration mechanism 101 includes a base plate 101 and a placement groove 114. The placement groove 114 is located at the top of the base plate 101. The base plate 101 is provided with a plurality of support legs 102. A motor 103 is placed in the middle, and the motor 103 is connected to a turntable 117 via a rotating shaft. Protrusions 104 are provided on the left and right sides of the turntable 117. Pulleys 116 are provided on the left and right sides of the bottom of the placement groove 114, and the pulleys 116 are connected to the surface of the turntable 117. Several side plates 115 are provided at the side ends of the placement groove 114, and each side plate 115 is equipped with a column 112. A top plate 108 is provided at the top of each column 112, and a hydraulic cylinder 107 is placed on the top plate 108. The hydraulic cylinder 107 passes through the top plate 108 and is connected to a cover plate 110 via a hydraulic rod 109. In use, the dried sand and gravel are poured into the screen 205 inside the screen box 201. The stacked screen boxes 201 are placed on the placement groove 114. The hydraulic cylinder 107 is started, and the hydraulic cylinder 107 drives the cover plate 110 to move vertically through the hydraulic rod 109, causing the cover plate 110 to fall down until it covers the surface of the top screen box 201. The motor 103 is started, and the motor 103 drives the turntable 117 to rotate through the rotating shaft. The rotation of the turntable 117 causes the protrusions 104 on the surface to rotate. The pulley 116 contacts the surface of the turntable 117. When the protrusions 104 rotate... When the turntable 117 rotates to the pulley 116, the pulley 116 passes over the surface of the protrusion 104 and falls down. This movement causes the upper placement groove 114 and several sieve boxes 201 to vibrate, which vibrates and screens the sand and gravel in the sieve boxes 201. This allows sand and gravel of different particle sizes to fall through the pores in the screen mesh 205 into the sieve boxes 201 with screen meshes 205 of different pore sizes. After screening, the sand and gravel in each layer of sieve boxes 201 are weighed, the data is recorded, and the fineness modulus is calculated to complete the fineness test of the sand and gravel.

[0025] This invention uses a starting motor 103 to drive the turntable 117 and the protrusion 104 to rotate. When the pulley 116 at the bottom of the placement groove 114 passes over the surface of the protrusion 104, the height of the protrusion 104 affects the vibration of the top screen box 201, and the sand and gravel in the screen box 201 are vibrated and screened to calculate the fineness. Compared with the existing sand and gravel fineness detection device, it is simple to operate and easy to execute, and is not easily affected by the external environment, which may lead to inaccurate measurement results.

[0026] Second embodiment:

[0027] like Figure 1 , Figure 2 , Figure 3As shown, a number of sliders 113 are provided at the side end of the cover plate 110. The sliders 113 are hollow structures and are slidably connected to the column 112. When the cover plate 110 is pushed vertically by the hydraulic rod 109, the side sliders 113 slide on the column 112 accordingly.

[0028] By providing a slider 113 on the side of the cover plate 110, when the cover plate 110 is pushed by the hydraulic rod 109, the slider 113 slides on the column 112, which helps to disperse the pressure applied by the hydraulic rod 109, making the cover plate 110 more evenly stressed and reducing local damage.

[0029] Third embodiment:

[0030] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a limiting plate 105 is fixedly connected to the top of the support leg 102. The limiting plate 105 is provided with several limiting holes 106. The pulley 116 is slidably connected in the limiting holes 106. When the pulley 116 vibrates up and down due to the influence of the protrusion 104 on the surface of the turntable 117, the limiting hole 106 limits the pulley 116 because the top of the pulley 116 is inside the limiting hole 106.

[0031] The sliding connection between pulley 116 and limiting hole 106 fixes the movement trajectory of pulley 116, reducing wear and damage to components.

[0032] Fourth embodiment:

[0033] like Figure 1 , Figure 2 , Figure 3 As shown, several mounting blocks 202 are provided on both sides of the sieve box 201. The mounting blocks 202 are provided with hooks 203 and locks 204. When the sieve boxes 201 are stacked together, the hooks 203 on the side of the lower sieve box 201 are hung in the middle of the hooks 203 on the side of the upper sieve box 201, so that several sieve boxes 201 become a whole and prevent the sieve boxes 201 from falling off during vibration.

[0034] Fifth embodiment:

[0035] like Figure 5 As shown, the bottom of the sieve box 201 is provided with an insert block 206 and the top of the sieve box 201 is provided with a slot 207. The upper sieve box 201 and the lower sieve box 201 are connected by inserting the insert block 206 into the slot 207. The insertion connection between the upper sieve box 201 and the lower sieve box 201 makes the connection between the different sieve boxes 201 tighter.

[0036] In use, the dried sand and gravel are poured into the screen 205 inside the screen box 201. The stacked screen boxes 201 are placed on the placement groove 114. The hydraulic cylinder 107 is started, and the hydraulic cylinder 107 drives the cover plate 110 to move vertically through the hydraulic rod 109, causing the cover plate 110 to fall down until it covers the surface of the top screen box 201. The motor 103 is started, and the motor 103 drives the turntable 117 to rotate through the rotating shaft. The rotation of the turntable 117 causes the protrusions 104 on the surface to rotate. The pulley 116 contacts the surface of the turntable 117. When the protrusions 104 rotate... When the turntable 117 rotates to the pulley 116, the pulley 116 passes over the surface of the protrusion 104 and falls down. This movement causes the upper placement groove 114 and several sieve boxes 201 to vibrate, which vibrates and screens the sand and gravel in the sieve boxes 201. This allows sand and gravel of different particle sizes to fall through the pores in the screen mesh 205 into the sieve boxes 201 with screen meshes 205 of different pore sizes. After screening, the sand and gravel in each layer of sieve boxes 201 are weighed, the data is recorded, and the fineness modulus is calculated to complete the fineness test of the sand and gravel.

[0037] The above embodiments are merely one of the preferred embodiments of this utility model and should not be used to limit the scope of protection of this utility model. Any modifications or refinements made to the main design concept and spirit of this utility model that are not of substantial significance, but solve the same technical problem as this utility model, should be included within the scope of protection of this utility model.

Claims

1. A device for detecting the fineness of sand and gravel, characterized in that, include: The vibrating mechanism (100) and the screening mechanism (200) are provided. The screening mechanism (200) is located at the top of the vibrating mechanism (100). The screening mechanism (200) includes multiple sieve boxes (201), each containing a sieve mesh (205). The sieve meshes (205) in the sieve boxes (201) are arranged from largest to smallest. The vibrating mechanism (100) includes a base plate (101) and a placement groove (114). The placement groove (114) is located at the top of the base plate (101). The base plate (101) has several support legs (102). A motor (103) is placed in the middle of the base plate (101). The machine (103) is connected to the turntable (117) via a rotating shaft. The turntable (117) has protrusions (104) on its left and right sides. The bottom of the placement groove (114) has pulleys (116) on its left and right sides. The pulleys (116) are connected to the surface of the turntable (117). The side end of the placement groove (114) has several side plates (115). Each side plate (115) has a column (112). The top of the column (112) has a top plate (108). A hydraulic cylinder (107) is placed on the top plate (108). The hydraulic cylinder (107) passes through the top plate (108) and is connected to the cover plate (110) via a hydraulic rod (109).

2. The sand and gravel fineness testing device according to claim 1, characterized in that, The cover plate (110) is provided with several sliders (113) at the side end. The sliders (113) are hollow and are slidably connected to the column (112).

3. The sand and gravel fineness testing device according to claim 2, characterized in that, The top of the support leg (102) is fixedly connected to a limiting plate (105), and the limiting plate (105) is provided with a plurality of limiting holes (106), and the pulley (116) is slidably connected in the limiting holes (106).

4. The sand and gravel fineness testing device according to claim 2, characterized in that, The sieve box (201) is provided with several mounting blocks (202) on both sides, and the mounting blocks (202) are provided with hooks (203) and locks (204).

5. The sand and gravel fineness testing device according to claim 4, characterized in that, The bottom of the sieve box (201) is provided with an insert (206), and the top of the sieve box (201) is provided with a slot (207). The upper sieve box (201) and the lower sieve box (201) are connected by inserting the insert (206) into the slot (207).

6. The sand and gravel fineness testing device according to claim 4, characterized in that, The placement groove (114) is lined with soft material.

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