CN104647229B - Hollow self-cooled millstone and cooling method - Google Patents

Abstract

The invention relates to a hollow self-cooling grinding disc, wherein the middle part of the grinding disc is a hollow structure, and a cooling water pipe is arranged in the hollow structure, which improves the utilization rate of the cooling water, prolongs the service life of the cooling water pipe, and realizes self-cooling of the grinding disc. The inner side of the grinding disc surface is set as a circular arc concave surface, and the outer side of the grinding disc head is provided with a circular arc concave baffle to ensure that the cooling water is sprayed and reflected on the grinding disc, and under the action of centrifugal force, the cooling water can be efficiently cooled. A retractable transparent plexiglass cover is placed above the grinding table, which can not only ensure that the working state of the grinding table can be seen, but also avoid the short circuit phenomenon of the instrument and personnel injury caused by water splashing. The cover is retractable in the direction of the motor shaft, which is convenient for testers to place and take out samples.

Description

A hollow self-cooling grinding disc and cooling method

technical field

The invention relates to the field of geotechnical engineering instruments, which belongs to a rock sample processing tool, in particular to a hollow self-cooling grinding disc for grinding rock samples, and also relates to a self-cooling method for the grinding disc.

Background technique

Laboratory test is a basic method commonly used in the field of geotechnical engineering to study geotechnical properties. The processing of rock samples is the basic step in carrying out various rock tests. The smoothing of both ends of the rock after coring is the basis for the smooth progress of subsequent rock mechanics tests and the prerequisite for obtaining accurate test data.

The flattening instrument of existing rock sample mainly divides two kinds of single-side grinder and double-end grinder. During the working process of the double-end stone grinder, the end of the cooling water pipe is fixed on the fixture, and the fixture reciprocates along with the worktable of the stone grinder, so the cooling water pipe is easily damaged; when the cooling water pipe reciprocates on the workbench When it is used, it is prone to water splashing, low utilization rate and waste of cooling water, and pollutes the laboratory environment.

Contents of the invention

The problem to be solved by the present invention is to provide a hollow self-cooling grinding disc, improve the service life of the cooling water pipe, realize the high utilization rate of cooling water, and provide a self-cooling method for the grinding disc at the same time.

The present invention is achieved through the following technical solutions:

A hollow self-cooling grinding disc, comprising a grinding disc head, a rotating shaft integrated with the grinding disc head, and a cooling water pipe, characterized in that: the periphery of the grinding disc head is a circular grinding disc surface, and the inner side of the grinding disc surface is an arc concave surface, The rotating shaft is coaxial with the grinding head, and the middle part of the rotating shaft and the grinding head is hollow structure, and the cooling water pipe is installed in the hollow structure. On the side of the mill head, the water outlet end of the cooling water pipe is provided with a shower; the outer side of the mill head is connected with an arc concave baffle, and the arc concave surface of the arc concave baffle is set opposite to the arc concave surface of the mill, The circular-arc concave baffle is fixed on the middle of the inner circular-arc concave surface of the grinding disc surface through the feet.

The upper part of the grinding disc is provided with a slidable and telescopic plexiglass cover, the bottom of the plexiglass cover is arranged in a chute, the chute is set on the workbench, and the base corresponding to the bottom of the plexiglass cover is also provided with a cooling water recovery collector. A water tank, the inside of the water collection tank is equipped with a filtering device.

As a preferred technical solution, a plurality of diversion grooves are evenly arranged radially on the inner circular arc concave surface of the grinding disc surface, and the diversion grooves are S-shaped or linear.

As a preferred technical solution, the number of the legs is evenly arranged to be 3 or 4, and the diameter of the circular arc concave baffle is greater than or equal to the diameter of the cooling water pipe, and smaller than the inner diameter of the grinding disc surface.

The present invention also provides a grinding disc self-cooling method, comprising:

Step (1): The self-cooling grinding disc is fixedly installed on the body at both ends of the stone grinder with a base, and the motor installed on the body provides the rotating force for the rotating shaft;

Step (2): After the sample is fixed in the middle of the fuselage by the fixture, shake the handwheel to move the grinding disc surface close to the sample;

Step (3): Push and pull the plexiglass cover left and right to the upper part of the grinding disc to ensure that the plexiglass cover just covers the grinding disc;

Step (4): The two cooling water pipes at both ends are controlled by a water inlet pipe, and the valve of the cooling water pipe is opened. The cooling water flows from the water inlet end on the side of the rotating shaft to the mill head through the cooling water pipe, and is set by the outlet end of the cooling water pipe. The shower is sprayed out, and the cooling water is sprayed by the shower, and is reflected by the arc concave baffle to the arc concave surface inside the grinding disc surface;

Step (5): Turn on the power of the motor, and the disc head rotates at a high speed driven by the rotating shaft. Under the action of centrifugal force, the cooling water flows evenly along the arc concave surface of the disc head to the disc surface to cool the disc;

Step (6): After the cooling water finishes cooling the grinding disc, it falls into the water collection tank on the base for recovery and is filtered by the filter device before being reused.

The present invention has the following beneficial effects: since the cooling water pipe is directly arranged in the hollow structure of the millstone, the cooling water is always sprayed on the millstone part, which improves the utilization rate of the cooling water, and the cooling water pipe is always kept in a static state during the working process, greatly extending the The service life of the cooling water pipe is improved, and the self-cooling effect is achieved. The inner side of the grinding disc surface is set as a circular arc concave surface with diversion grooves, which is beneficial for the cooling water to be evenly sprayed on the grinding disc surface under the action of centrifugal force during the grinding disc rotation process to speed up the cooling rate of the grinding disc. The arc concave baffle is arranged on the outer side of the grinding disc head to ensure that the cooling water is sprayed and reflected to the grinding disc surface. A retractable transparent plexiglass cover is placed above the grinding table, which can not only ensure that the working status of the grinding table can be seen, but also avoid the short circuit phenomenon of the instrument and personal injury caused by water splashing. The cover can expand and contract in the direction of the motor shaft, which is convenient for testers to place and take out samples.

Description of drawings

Fig. 1 is a schematic view of the working position of the present invention.

Fig. 2 is a schematic diagram of the front structure of the grinding disc provided with linear diversion grooves according to the present invention.

Fig. 3 is a schematic diagram of the front structure of the grinding disc provided with S-shaped guide grooves according to the present invention.

In the figure: 1. Workbench 2, disc head 3, fixture 4, sample 5, cooling water pipe 6, rotating shaft 7, base 8, disc surface 9, hand wheel 10, plexiglass cover 11, arc concave baffle 12, Motor 13, support foot 14, shower 15, diversion groove.

detailed description

As shown in Figure 1, a hollow self-cooling grinding disc includes a grinding disc head (2), a rotating shaft (6) integrated with the grinding disc head, and a cooling water pipe (5). The periphery of the grinding disc head (2) is circular The disc surface (8), the inner side of the disc surface (8) is a circular arc concave surface, the rotating shaft (6) is coaxial with the disc head (2), the rotating shaft (6) and the disc head (2) The middle part is a hollow structure, and the cooling water pipe (5) is passed through the hollow structure. The water inlet end of the cooling water pipe (5) is set on the side of the rotating shaft (6), and the water outlet end is set on the side of the grinding head (2). The water outlet end of the cooling water pipe (5) is provided with a shower (14); the outer side of the disc head (2) is connected with an arc concave baffle (11), and the arc concave baffle (11) passes through the feet (13 ) is fixed in the middle of the inner circular arc concave surface of the grinding disc surface.

In addition, a slidable and telescopic plexiglass cover (10) is provided on the upper part of the grinding disc, and the bottom of the plexiglass cover (10) is set in a chute, and the chute is set on the workbench (1), and the plexiglass cover (10) (10) The base (7) corresponding to the bottom is also provided with a cooling water recovery collection tank, and a filtering device is arranged inside the collection tank.

Referring to the accompanying drawings 2-3, the inner circular arc concave surface of the grinding disc surface (8) is evenly arranged with a plurality of diversion grooves (15) in the radial direction, and the diversion grooves (15) are S-shaped or linear.

The support feet (13) are evenly arranged in 3 or 4 pieces, and the diameter of the arc concave baffle (11) is greater than or equal to the diameter of the cooling water pipe (5), and smaller than the inner diameter of the grinding disc surface (8).

The disc is self-cooling through the following methods, including:

Step (1): The self-cooling grinding disc is fixedly installed on the machine body at both ends of the stone grinder with the base (7), and the motor (12) installed on the machine body provides the rotating force for the rotating shaft;

Step (2): After the sample is fixed in the middle of the fuselage by the fixture (3), shake the handwheel (9) to move the grinding disc surface (8) close to the sample;

Step (3): Push and pull the plexiglass cover (10) left and right to the upper part of the grinding disc to ensure that the plexiglass cover (10) just covers the grinding disc;

Step (4): Control the water inlet of the two cooling water pipes (5) at both ends with one water inlet pipe, open the valve of the cooling water pipe, and the cooling water flows from the water inlet end on the side of the rotating shaft (6) to the mill head (2) through the cooling water pipe ), and sprayed from the shower (14) installed at the water outlet end of the cooling water pipe. After the cooling water is sprayed from the shower (14), it is reflected by the circular arc concave baffle (11) to the circular arc inside the grinding disc surface (8) concave surface;

Step (5): Turn on the power of the motor (12), the disc head (2) rotates at a high speed driven by the rotating shaft (6), and under the action of centrifugal force, the cooling water flows evenly along the concave surface of the disc head (2) to the disc Cool the grinding disc on the surface;

Step (6): After the cooling water finishes cooling the grinding disc, it falls into the sump on the base (7) for recovery and is filtered by the filter device before being reused.

The above is only a specific implementation of the present invention, but the scope of protection of the present invention is not limited thereto, and any changes or replacements that are not conceived through creative work shall be covered within the scope of protection of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope defined in the claims.

Claims (3)

1. a kind of hollow self cooled mill, including mill head (2), and the first body of mill rotating shaft (6), cooling water pipe (5), institute The periphery for stating mill head (2) is annular mill face (8), and the inner side of the mill face (8) is circular arc concave surface, the rotating shaft (6) It is coaxial with mill head (2), hollow-core construction is in the middle part of the rotating shaft (6) and the mill head (2), cooling water pipe (5) wears In hollow-core construction, the water inlet end of the cooling water pipe (5) is located at rotating shaft (6) side, and water side is located at mill head (2) side, The water side of the cooling water pipe (5) is provided with gondola water faucet (14)；Circular arc concave surface baffle plate (11) is connected with the outside of mill head (2), The circular arc concave surface baffle plate (11) is fixed on the middle part of mill face (8) the inner arc concave surface by leg (13)；Cooling water Jing cooling water pipes flow to mill head by the water inlet end of rotating shaft (6) side（2）, and the gondola water faucet arranged by cooling water pipe water side（14） Spray, cooling water is by gondola water faucet（14）After ejection, mill face is reflexed to by circular arc concave surface baffle plate（8）On the circular arc concave surface of inner side；Institute The plexiglass tent (10) that mill top is additionally provided with Slidable telescopic is stated, the bottom of plexiglass tent (10) is arranged on chute Interior, the chute is arranged on workbench (1), is additionally provided with cooling water on the base (7) of plexiglass tent (10) correspondence bottom Water leg is reclaimed, defecator inside water leg, is configured with；The also radially uniform cloth of circular arc concave surface of the inner side of the mill face (8) Plurality of guiding gutter (15) is equipped with, the guiding gutter (15) is S types or linear type.

2. hollow self cooled mill according to claim 1, the leg (13) is evenly arranged as 3 or 4, described Circular arc concave surface baffle plate (11) with diameter greater than equal to cooling water pipe (5) diameter, less than the internal diameter of mill face (8).

3. a kind of mill is from cooling means, including：

Step (1)：Hollow self cooled mill as described in claim 1 is fixedly mounted on into the stone mill with base (7) On the fuselage at two ends, rotatory force is provided for rotating shaft by the motor (12) on fuselage；

Step (2)：Sample is fixed on after waist by fixture (3), mobile mill face (8) of shake handwheel (9) is near examination Sample；

Step (3)：By plexiglass tent (10) left and right push-and-pull to mill top, it is ensured that plexiglass tent (10) just covers mill Disk；

Step (4)：By two cooling water pipes (5) at two ends by a water inlet pipe control water inlet, cooling water pipe valve, cooling are opened Water Jing cooling water pipes flow to mill head (2), and the gondola water faucet arranged by cooling water pipe water side by the water inlet end of rotating shaft (6) side (14) spray, after cooling water is by gondola water faucet (14) ejection, the circular arc reflexed to by circular arc concave surface baffle plate (11) on the inside of mill face (8) is recessed On face；

Step (5)：Motor (12) power supply is opened, mill head (2) is rotated under rotating shaft (6) drive at a high speed, in the effect of centrifugal force Under, along the circular arc concave surface of mill head (2), uniformly stream is cooled down on mill face cooling water to mill；

Step (6)：After cooling water completes the cooling to mill, fall to Reuse after putting filtration.