CN217132894U

CN217132894U - Mine tailings particle size distribution testing device

Info

Publication number: CN217132894U
Application number: CN202220975112.9U
Authority: CN
Inventors: 宋泽普; 盛宇航; 朱庚杰; 桑来发; 杨纪光; 吴再海; 郭加仁
Original assignee: Shandong Gold Mining Technology Co ltd; Shandong Gold Mining Technology Co ltd Filling Engineering Laboratory Branch
Current assignee: Shandong Gold Mining Technology Co ltd; Shandong Gold Mining Technology Co ltd Filling Engineering Laboratory Branch
Priority date: 2022-04-26
Filing date: 2022-04-26
Publication date: 2022-08-05
Anticipated expiration: 2032-04-26

Abstract

The utility model relates to a mine tailing particle size distribution testing device, wherein the upper side of a screen frame of a screen which is overlapped layer by layer is provided with a frame convex strip, and the lower side is provided with a frame groove; the frame groove of the upper layer of the separating screen is clamped with the frame raised line of the adjacent lower layer of the separating screen, the frame groove of the lowest layer of the separating screen is clamped with the raised line at the upper end of the bracket, and the frame raised line of the uppermost layer of the separating screen is clamped with the side groove of the cover plate; the aperture of the screen mesh arranged from top to bottom becomes smaller layer by layer. The separating screen cover plate is provided with a water inlet nozzle, and the water receiving hopper is provided with a water outlet nozzle. Through assembling the separating screens with different apertures above the water receiving hopper, the mortar passes through the separating screens with different apertures from top to bottom under the action of water flushing, and the separation of samples with different particle sizes is realized. The sample is separated in the closed container, so that the problem of test errors caused by scattering is avoided, the complicated procedure of continuously switching the sieve and the container in manual sieving operation is avoided, and the sieving efficiency is improved.

Description

Mine tailings particle size distribution testing device

Technical Field

The utility model relates to a mine tailings particle size distribution testing arrangement belongs to the mine and fills technical field.

Background

In the mine filling process, the grain size distribution of the tailings is a key parameter of filling aggregates. The tailing particle size distribution data is mainly used for determining and correcting technical parameters of a tailing thickening process, a filling slurry stirring preparation process and a filling slurry conveying process. Meanwhile, the filling slurry with different tailings particle size distributions also has great influence on the strength of the filling body, so the tailings particle size distribution is also an important index parameter of the filling slurry.

As the prior art, laser particle size analyzer test and water sieve screening test are common methods for testing the particle size distribution of the tailings at present. The laser particle size analyzer has high testing precision, but the quantity of the test sample is small each time, the representativeness of the test sample is insufficient, so that the testing error is generated, and particularly, the testing precision of coarse fraction tailings is lower. The water sieve screening test is accurate and reliable, but because every water sieve exclusive use, screening work load is big, inefficiency to mostly be manual screening, the ground paste that sieves frequently appears in the operation process is unrestrained, produces unpredictable testing error from this.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a high-efficient convenient mine tailings particle size distribution testing arrangement is provided, solve the problem that tailings particle size distribution test error is big and screening work efficiency is low.

The technical scheme of the utility model as follows:

a mine tailing particle size distribution testing device comprises a base, wherein a support is arranged on the base; its special feature

Characterized in that: the bracket is provided with four side vertical plates with the same height, and bracket convex strips are processed at the upper ends of the side vertical plates; the testing device also comprises a water receiving hopper fixedly arranged on the inner sides of the four side vertical plates, the water receiving hopper is provided with a rectangular section and a conical section connected to the lower end of the rectangular section, and the four side plates of the rectangular section are correspondingly attached to the inner sides of the four side vertical plates one by one; the bottom end of the conical section is provided with a water outlet nozzle; the testing device also comprises a screen cover plate with a water inlet nozzle, wherein the screen cover plate is provided with four side edges, and the four side edges are provided with cover plate side edge grooves; the test device also comprises a separation sieve which is stacked layer by layer, wherein the separation sieve comprises a separation sieve frame and a separation sieve net arranged on the separation sieve frame; the upper side of the screen frame is provided with a frame convex strip, and the lower side of the screen frame is provided with a frame groove; the frame groove of the upper layer of the separating screen is clamped with the frame raised line of the adjacent lower layer of the separating screen, the frame groove of the lowermost layer of the separating screen is clamped with the support raised line, and the frame raised line of the uppermost layer of the separating screen is clamped with the side groove of the cover plate; the aperture of the screen mesh arranged from top to bottom becomes smaller layer by layer.

Preferably, the testing device further comprises a sleeve, the lower end of the sleeve is fixedly mounted on the base, and a telescopic rod is mounted in the sleeve; the upper end of the telescopic rod is provided with an inner bending section and the inner bending section is provided with a longitudinal through hole, the upper end of a compression bolt penetrating through the longitudinal through hole is provided with a nut, and the lower end of the compression bolt is propped against the upper side of the screen separation cover plate.

Preferably, the testing device further comprises a supporting seat located below the base, and the supporting seat is connected with the base through a coil spring.

Preferably, a gasket made of rubber is arranged between the convex strip and the groove which are mutually clamped; the gasket is fixed on the raised line and covers the raised line and the raised line shoulder.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) through assembling the separating screens with different apertures above the water receiving hopper, the mortar passes through the separating screens with different apertures from top to bottom under the action of water flushing, and the separation of samples with different particle sizes is realized. The sample is separated in the closed container, so that the problem of test errors caused by scattering is avoided, the complicated procedure of continuously switching the sieve and the container in manual sieving operation is avoided, and the sieving efficiency is improved.

(2) The sample amount (more than or equal to 200 g) of each tailing particle size distribution test is obviously higher than the tailing sample amount (less than or equal to 3 g) of the laser particle size analyzer test, the sample representativeness is better, and the test result is closer to the actual distribution condition.

(3) The interlayer screen frame, the interlayer screen cover plate and the interlayer screen frame and the support which are overlapped layer by layer are matched in a sand grip groove matching mode, and gaskets are arranged at the matching positions, so that the device is better in sealing performance, stronger in part abrasion resistance and smaller in operation noise.

Drawings

Fig. 1 is a schematic front view of an embodiment of the present invention;

fig. 2 is a schematic top view of the embodiment of the present invention;

fig. 3 is a schematic front view of a partition screen composed of a partition screen frame and a partition screen cloth according to an embodiment of the present invention;

fig. 4 is a schematic top view of a screen composed of a screen frame and a screen net according to an embodiment of the present invention.

In the figure: 1. a supporting seat; 2. a coil spring; 3. a base; 4. a support; 4-1, support convex strips; 5. a sleeve; 6. positioning a bolt; 7. a telescopic rod; 8. a hold-down bolt; 9. a screen cover plate; 10. a gasket; 11. a screen frame; 11-1, frame convex strips; 11-2, frame grooves; 12. separating a screen mesh; 13. a handle; 14. a water inlet nozzle; 15. a water inlet pipe; 16. a water outlet nozzle; 17. a water outlet pipe; 18. a water receiving bucket.

Detailed Description

The invention is further described with reference to the following figures and examples.

As shown in fig. 1 and 2, the embodiment of the present invention includes a supporting seat 1, four coil springs 2 are symmetrically installed on the supporting seat 1, the upper end of the coil spring 2 is connected with a base 3, and a support 4 is installed on the base 3. The bracket 4 is provided with four side vertical plates with the same height, and bracket convex strips 4-1 are processed at the upper ends of the side vertical plates.

The embodiment of the utility model discloses an embodiment still include fixed mounting in the inboard water receiving bucket 18 of four side risers, water receiving bucket 18 have the rectangle section and connect in the toper section of rectangle section lower extreme, the four curb plates one-to-one of rectangle section laminate in four side risers are inboard and go up the border and be located along the position under the support sand grip 4-1 or be a little higher than support sand grip 4-1 along the position down. The bottom end of the conical section is connected with a water outlet pipe 17 through a water outlet nozzle 16, wherein the water outlet pipe 17 is generally a hose.

The embodiment of the utility model discloses an embodiment is still including the sieve apron 9 that separates that has handle 13, it has four sides to separate sieve apron 9, and apron side recess has all been seted up to four sides. The screen cover plate 9 is connected with a water inlet pipe 15 through a water inlet nozzle 14, and the water inlet pipe 15 is generally a hose.

The embodiment of the utility model discloses an embodiment still includes the superimposed sieve that separates of successive layer, separate the sieve including separating sieve frame 11 and installing at the screen cloth 12 that separates on separating sieve frame 11, as shown in figure 4. As shown in fig. 3, the screen frame 11 has frame ribs 11-1 on the upper side and frame grooves 11-2 on the lower side. The frame groove of the upper layer of the separating screen is connected with the frame convex strip of the adjacent lower layer of the separating screen in a clamped mode, the frame groove of the lowest layer of the separating screen is connected with the support convex strip 4-1 in a clamped mode, and the frame convex strip of the uppermost layer of the separating screen is connected with the side groove of the cover plate in a clamped mode.

The screen cover plate 9, all screen frames 11 and the water receiving hopper 18 enclose a sealed space.

As fig. 1, the embodiment of the utility model discloses a still include lower extreme fixed mounting sleeve pipe 5 on base 3, install telescopic link 7 in the sleeve pipe 5, install positioning bolt 6 between sleeve pipe 5 and the telescopic link 7, fastening positioning bolt 6 realizes the location after 7 altitude setups of telescopic link. The upper end of the telescopic rod 7 is provided with an inner bending section which is provided with a longitudinal through hole, the upper end of a compression bolt 8 which penetrates through the longitudinal through hole is provided with a nut, and the lower end of the compression bolt is propped against the upper side of the screen separation cover plate 9.

Between the mutually interlocking ridges and grooves, a gasket 10 of rubber material is provided, said gasket 10 being normally fixed on the ridges and covering the ridges and the shoulders of the ridges.

The supporting seat 1, the spiral spring 2, the base 3, the support 4, the sleeve 5, the telescopic rod 7, the screen cover plate 9, the screen frame 11 and the handle 13 are all made of stainless steel.

The purpose of the coil spring 2 is to: the accessible is manual or connect vibrating motor, realizes separating whole not equidirectional rocking of sieve to accelerate screening speed.

The aperture of the separating screen 12 is set according to the industry standard, and 100 meshes, 200 meshes, 300 meshes, 400 meshes, 500 meshes, 600 meshes, 800 meshes and 1000 meshes are generally adopted. The aperture of the separating screen 12 becomes smaller from top to bottom layer by layer.

Taking a proper amount of tailing samples, putting the tailing samples into the uppermost layer of the separating screen, and covering a separating screen cover plate 9; the height of the telescopic sleeve rod is matched with the total height of the separation sieve by adjusting the sleeve 5 and the telescopic rod 7, the positioning bolt 6 is screwed, the compression bolt 8 is screwed, and the fastening support 4, each layer of separation sieve and the separation sieve cover plate 9 form a sealed whole. After the device is fixed, the water is continuously flushed through the water inlet pipe 15 and the water inlet nozzle 14, and the sample passes through the separation screen 12 with different apertures from top to bottom. And after the screening is finished, taking down each layer of partition screen, drying, weighing and counting.

Claims

1. A mine tailing particle size distribution testing device comprises a base (3), wherein a support (4) is mounted on the base (3); the method is characterized in that: the bracket (4) is provided with four side vertical plates with the same height, and bracket convex strips (4-1) are processed at the upper ends of the side vertical plates; the testing device also comprises a water receiving hopper (18) fixedly arranged on the inner sides of the four side vertical plates, the water receiving hopper (18) is provided with a rectangular section and a conical section connected to the lower end of the rectangular section, and the four side plates of the rectangular section are correspondingly attached to the inner sides of the four side vertical plates one by one; the bottom end of the conical section is provided with a water outlet nozzle (16); the testing device also comprises a screen cover plate (9) with a water inlet nozzle (14), wherein the screen cover plate (9) is provided with four side edges, and the four side edges are provided with cover plate side edge grooves; the testing device also comprises a separation screen which is overlapped layer by layer, wherein the separation screen comprises a separation screen frame (11) and a separation screen mesh (12) which is arranged on the separation screen frame (11); the upper side of the screen frame (11) is provided with a frame convex strip (11-1), and the lower side is provided with a frame groove (11-2); the frame groove of the upper layer of the separating screen is clamped with the frame raised line of the adjacent lower layer of the separating screen, the frame groove of the lowest layer of the separating screen is clamped with the support raised line (4-1), and the frame raised line of the uppermost layer of the separating screen is clamped with the side groove of the cover plate; the aperture of the screen (12) arranged from top to bottom becomes smaller layer by layer.

2. The mine tailings particle size distribution testing apparatus of claim 1, wherein: the testing device also comprises a sleeve (5) with the lower end fixedly arranged on the base (3), and a telescopic rod (7) is arranged in the sleeve (5); the upper end of the telescopic rod (7) is provided with an inner bending section which is provided with a longitudinal through hole, the upper end of a compression bolt (8) which penetrates through the longitudinal through hole is provided with a nut, and the lower end of the compression bolt is propped against the upper side of the screen separation cover plate (9).

3. The mine tailings particle size distribution testing apparatus of claim 1, wherein: the testing device further comprises a supporting seat (1) located below the base (3), and the supporting seat (1) is connected with the base (3) through a spiral spring (2).

4. The mine tailings particle size distribution testing apparatus of claim 1, wherein: a gasket (10) made of rubber is arranged between the convex strips and the grooves which are mutually clamped; the gasket (10) is fixed on the convex strip and covers the convex strip and the convex strip shoulder.