CN219559846U - Grading separation device and sand mill with same - Google Patents

Abstract

The utility model relates to the technical field of sand mills, in particular to a grading separation device and a sand mill with the grading separation device, which comprise a connecting structure and a plurality of separation mechanisms, wherein the separation mechanisms comprise a separation seat, a separation cavity and a plurality of first separation channels, and the diameters of the separation cavities are gradually decreased from top to bottom; the novel separating device comprises a frame, a cylinder body, a driving mechanism, a rotor structure, an inner stator and a transmission shaft, wherein one end of the transmission shaft sequentially penetrates through the inner stator, a plurality of separating cavities and a connecting structure from top to bottom and then is in transmission connection with the rotor structure, and the inner stator can protrude into the separating cavities between the transmission shaft and the separating seat. The connection structure is convenient to connect with the transmission of the transmission shaft, the transmission shaft is convenient to seal the lowest separation cavity by being matched with the connection structure, and the grading separation device is convenient to accurately separate grinding media step by step. The material channel is not required to be arranged in the transmission shaft, so that the strength of the transmission shaft is improved.

Description

Grading separation device and sand mill with same

Technical Field

The utility model relates to the technical field of sand mills, in particular to a grading separation device and a sand mill with the grading separation device.

Background

The sand mill is the most widely applicable, most advanced and most efficient grinding equipment, and is mainly used for wet grinding of chemical liquid products, and grinding media used by the sand mill are generally divided into zirconia beads, glass beads, zirconium silicate beads and the like. The utility model discloses in the patent application of a sand mill of double turbine pearl material separation of application number CN202110541503.X, application name, including grinding jar, first pivot, stirring rake and pearl material separator, the stirring rake set up in first pivot, first pivot the stirring rake bead material separator all hold in grinding jar is inside, pearl material separator includes second pivot, first separating mechanism and second separating mechanism, first separating mechanism second separating mechanism from inside to outside in proper order enclose in the second pivot, the second pivot with first pivot is connected, the second pivot is hollow structure, the outer wall of second pivot is provided with a plurality of through-holes, a plurality of the through-hole all with first separating mechanism corresponds. The first separation structure and the second separation structure in the application can be matched with the hollow second rotating shaft to convey the separated materials to the outside of the cylinder, the strength of the second rotating shaft is reduced due to the fact that the second rotating shaft is provided with holes, and meanwhile, the shaft diameter of the second rotating shaft is increased, so that the production cost of the second rotating shaft is increased; the connection structure of the first separation structure and the second separation structure is complex, and the connection and the installation steps with the second rotating shaft are complex. Thus, the drawbacks are quite apparent and there is a need to provide a solution.

Disclosure of Invention

In order to solve the above problems, an object of the present utility model is to provide a classifying device and a sand mill having the classifying device.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the classifying and separating device comprises a connecting structure and a plurality of separating mechanisms, wherein each separating mechanism comprises a separating seat, a separating cavity penetrating through the separating seat and a plurality of first separating channels penetrating through the separating seat respectively, the plurality of first separating channels of the separating mechanism are communicated with the separating cavity of the separating mechanism respectively, and a plurality of separating seats are connected in a stacked mode; adjacent two separation cavities are communicated with each other; the diameters of the plurality of separation cavities are gradually decreased from top to bottom, and the connecting structure is connected with the lowest separation seat.

Further, the first separation channel is linear, spiral or arc-shaped.

Further, a plurality of the separation seats and the connection structure are integrally constructed.

Further, the lengths of the plurality of first separation channels are gradually increased from top to bottom.

The sand mill with the grading separation device comprises the grading separation device, a frame, a cylinder body arranged on the frame, a driving mechanism arranged in the frame, a rotor structure accommodated in the cylinder body, an inner stator arranged on the inner side wall of the cylinder body and a transmission shaft rotatably arranged in the cylinder body, wherein the grading separation device is arranged in the cylinder body; one end of the transmission shaft sequentially penetrates through the inner stator, the plurality of separation cavities and the connecting structure from top to bottom and is in transmission connection with the rotor structure, the transmission shaft is in transmission connection with the connecting structure, and the other end of the transmission shaft penetrates through the cylinder body and is connected with the output end of the driving mechanism; the inner stator can protrude into a plurality of separation cavities between the transmission shaft and the separation seat.

Further, the separation cavity comprises a first discharging channel formed by surrounding the side wall of the inner stator and the side wall of the transmission shaft and a plurality of second separation channels formed by surrounding the side wall of the inner stator and the inner side walls of the plurality of separation seats respectively, the first discharging channel is communicated with a second separation channel at the lowest part, two adjacent second separation channels are communicated with each other, and a plurality of first separation channels are communicated with corresponding second separation channels respectively.

Further, the sand mill still includes the feed inlet that sets up in the one end that the barrel kept away from the inner stator and sets up in the discharge gate that the barrel is close to the one end of inner stator, the discharge gate communicates with first discharge channel, the feed inlet communicates with first separation channel and second separation channel respectively.

Further, the sand mill also comprises an end cover, a protruding part and a second discharging channel, wherein the end cover is covered at one end of the cylinder, the protruding part is arranged on the end cover, and the second discharging channel is formed by surrounding the inner side wall of the protruding part and the outer side wall of the transmission shaft; the discharge gate runs through the bellying setting, first discharge channel is through second discharge channel and discharge gate intercommunication.

Further, the grading separation device further comprises a baffle block formed by outwards protruding the top end side wall of the separation seat, the baffle block can protrude into a separation cavity corresponding to the baffle block, and the second separation channel is formed by surrounding the inner side wall of the separation seat, the baffle block and the side wall of the inner stator.

The utility model has the beneficial effects that: the classifying separation device has the advantages that the structure is simple, the connection structure is convenient to connect with the transmission of the transmission shaft, the transmission shaft is convenient to seal the lowest separation cavity by matching with the connection structure, a small amount of materials can enter the second separation channel from the first separation channel by overcoming the centrifugal force, but most of materials and grinding media can only enter the classifying separation device from the uppermost second separation channel, and the classifying separation device is convenient to accurately separate the grinding media step by step. The first discharging channel is formed by enclosing the transmission shaft and the inner stator, a material channel is not required to be arranged in the transmission shaft, the strength of the transmission shaft is improved, the shaft diameter of the transmission shaft can be correspondingly reduced, and the processing steps of the transmission shaft are simplified; the connection and installation of the transmission shaft with the cylinder body, the inner stator, the grading separation device and the rotor structure are simpler.

Drawings

FIG. 1 is a schematic perspective view of a fractionation apparatus according to the present utility model.

Fig. 2 is a schematic perspective view of the sand mill according to the present utility model.

Fig. 3 is a partial cross-sectional view of the sand mill of the present utility model.

Fig. 4 is an enlarged view at B of fig. 3.

Fig. 5 is a cross-sectional view at A-A of fig. 3.

Reference numerals illustrate:

1. a separation mechanism; 2. a connection structure; 3. a separation seat; 4. a separation chamber; 5. a first separation channel; 6. a frame; 7. a cylinder; 8. an inner stator; 9. a transmission shaft; 10. a rotor structure; 11. a first discharge channel; 12. a second separation channel; 13. a feed inlet; 14. a discharge port; 15. a feed pump; 16. an end cap; 17. a boss; 18. a second discharge channel; 19. a material blocking block.

Detailed Description

The utility model will be further described with reference to examples and drawings, to which reference is made, but which are not intended to limit the scope of the utility model.

As shown in fig. 1 to 5, the present utility model provides a fractionation device, which includes a connection structure 2 and a plurality of separation mechanisms 1, wherein the separation mechanisms 1 include a separation seat 3, a separation chamber 4 penetrating the separation seat 3 along a vertical direction, and a plurality of first separation passages 5 penetrating the separation seat 3 along a horizontal direction, the plurality of first separation passages 5 of the separation mechanisms 1 are respectively communicated with the separation chamber 4 of the separation mechanism 1, the separation seats 3 of the plurality of separation mechanisms 1 are sequentially stacked together, and two separation seats 3 of two adjacent separation mechanisms 1 are connected together; two separation cavities 4 of two adjacent separation mechanisms 1 are communicated with each other; the diameters of the plurality of separation chambers 4 decrease gradually from top to bottom, and the connecting structure 2 is connected with the separation seat 3 (the separation seat 3 with the separation chamber 4 with the smallest diameter) positioned at the lowest position. The plurality of first separation channels 5 are distributed in an annular array along the central axis of the separation seat 3.

The sand mill with the grading separation device comprises the grading separation device, a frame 6, a cylinder 7 arranged on the frame 6, a driving mechanism arranged in the frame 6, a rotor structure 10 accommodated in the cylinder 7, an inner stator 8 arranged on the inner side wall of the cylinder 7 and a transmission shaft 9 rotatably arranged on the cylinder 7, wherein the grading separation device is arranged in the cylinder 7; one end of the transmission shaft 9 sequentially penetrates through the inner stator 8, the plurality of separation cavities 4 and the connecting structure 2 from top to bottom and is in transmission connection with the rotor structure 10, the transmission shaft 9 is clamped or in transmission connection with the connecting structure 2, and the other end of the transmission shaft 9 penetrates through the cylinder 7 and is connected with the output end of the driving mechanism; the inner stator 8 can protrude into the plurality of separation chambers 4 between the drive shaft 9 and the separation seat 3.

Specifically, the separation chamber 4 includes a first discharge channel 11 formed by enclosing the side wall of the inner stator 8 and the side wall of the transmission shaft 9, and a plurality of second separation channels 12 formed by enclosing the side wall of the inner stator 8 and the inner side walls of the plurality of separation seats 3, respectively, where the first discharge channel 11 is communicated with a second separation channel 12 at the lowest position, two adjacent second separation channels 12 are mutually communicated, and a plurality of first separation channels 5 are respectively communicated with the corresponding second separation channels 12. The sand mill further comprises a feed inlet 13 arranged at one end of the cylinder 7 far away from the inner stator 8 and a discharge outlet 14 arranged at one end of the cylinder 7 near the inner stator 8, wherein the discharge outlet 14 is communicated with the first discharge channel 11, and the feed inlet 13 is respectively communicated with the first separation channel 5 and the second separation channel 12. Preferably, the number of the separating mechanisms 1 is two, the separating mechanism 1 positioned above is the separating mechanism 1 of the first stage, the separating mechanism 1 positioned below is the separating mechanism 1 of the second stage, and the transmission shaft 9 is clamped with the connecting structure 2 and can seal the bottom end opening of the separating cavity 4 of the separating mechanism 1 of the second stage.

In the actual use process, the feeding port 13 of the cylinder 7 is connected with the feeding pump 15, materials or/and grinding media are conveyed into the cylinder 7 through the feeding port 13 by the feeding pump 15, the driving mechanism is started, the driving mechanism drives the rotor structure 10 and the classifying device to rotate in the cylinder 7 through the transmission shaft 9, and the rotor structure 10 drives the grinding media and the materials to do centrifugal motion in the cylinder 7, so that the grinding media and the materials are uniformly mixed in the cylinder 7 and fully ground through the grinding media. The fully ground materials and a small amount of grinding media can move upwards to the second separation channel 12 of the first-stage separation mechanism 1 in the direction close to the discharge hole 14 against the centrifugal force under the action of the pressure in the cylinder 7 or the pressure of the feed pump 15, and part of the grinding media can flow out of the second separation channel 12 of the first-stage separation mechanism 1 through the first separation channel 5 of the first-stage separation mechanism 1 under the action of the centrifugal force, so that the primary separation of the grinding media in the grading separation device is completed; the material and the rest of the grinding media flow along the second separation channel 12 of the separation mechanism 1 of the first stage towards the direction close to the second separation channel 12 of the separation mechanism 1 of the second stage, as the diameter of the separation cavity 4 of the separation mechanism 1 of the second stage is smaller than that of the separation cavity 4 of the separation mechanism 1 of the first stage, when the material and the rest of the grinding media flow into the second separation channel 12 of the separation mechanism 1 of the second stage, the material and the grinding media flow to a position closer to the transmission shaft 9, at the moment, the centrifugal radius of the material and the grinding media positioned in the second separation channel 12 of the separation mechanism 1 of the second stage is smaller, the centrifugal force exerted by the grinding media is larger, the grinding media flows out of the second separation channel 12 from the first separation channel 5 of the separation mechanism 1 of the second stage under the action of the larger centrifugal force, so that the grinding media are separated again in the classification separation device, and finally the material which is not centrifuged flows out of the second separation channel 12 of the separation mechanism 1 of the second stage into the first discharge channel 11 and the discharge port 14, and finally flows out of the discharge port 14 to the outside of the cylinder 7 in sequence, so that the multi-stage separation of the material and the grinding media are completed. The structure of the grading separation device is simple, the connection structure 2 is convenient to connect with the transmission of the transmission shaft 9, meanwhile, the transmission shaft 9 and the connection structure 2 are matched to seal the lowest separation cavity 4 conveniently, a small amount of materials can enter the second separation channel 12 from the first separation channel 5 against centrifugal force, but most of materials and grinding media can only enter the grading separation device from the uppermost second separation channel 12, and the grading separation device is convenient to accurately separate the grinding media step by step. The first discharging channel 11 is formed by enclosing the transmission shaft 9 and the inner stator 8, a material channel is not required to be arranged in the transmission shaft 9, the strength of the transmission shaft 9 is improved, the shaft diameter of the transmission shaft 9 can be correspondingly reduced, and the processing steps of the transmission shaft 9 are simplified; the connection and mounting of the drive shaft 9 to the cylinder 7, the inner stator 8, the classifying device and the rotor structure 10 is simpler.

Further, the sand mill further comprises an end cover 16, a protruding part 17 and a second discharging channel 18, wherein the end cover 16 is covered at one end of the cylinder 7, the protruding part 17 is arranged on the end cover 16, and the second discharging channel 18 is formed by surrounding the inner side wall of the protruding part 17 and the outer side wall of the transmission shaft 9; the discharge port 14 penetrates through the protruding portion 17, and the first discharge channel 11 is communicated with the discharge port 14 through the second discharge channel 18.

Specifically, the transmission shaft 9 penetrates through the protruding portion 17 and then is connected with the output end of the driving mechanism, one end of the inner stator 8 is clamped between the end cover 16 and the cylinder 7, and the other end of the inner stator 8 can protrude between the separation seat 3 and the transmission shaft 9. In the actual use process, the materials flow into the second discharging channel 18 and the discharging hole 14 from the first discharging channel 11 in sequence, and then flow out of the cylinder 7 through the discharging hole 14. The bulge 17 is additionally arranged, so that materials can be conveniently conveyed, stored or piled up in the second discharging channel 18, the problem that the materials are piled up in the first discharging channel 11 is avoided, and the discharging efficiency of the sand mill is improved.

Further, the fractionation device further comprises a baffle block 19 formed by protruding outwards from the top end side wall of the separation seat 3, the baffle block 19 can protrude into the separation cavity 4 corresponding to the baffle block, and the second separation channel 12 is formed by surrounding the inner side wall of the separation seat 3, the baffle block 19 and the side wall of the inner stator 8.

Preferably, the maximum width of the second discharge channel 18 is greater than three times the diameter of the grinding medium. In the actual use process, through adjusting the height of the baffle block 19, the size of the gap between the baffle block 19 and the inner stator 8 is adjusted, so that the width of the channel of the second discharging channel 18 is adjusted, the stable discharging of the second discharging channel 18 is facilitated, and meanwhile, the problem that materials or grinding media bridge or block in the second discharging channel 18 is effectively avoided.

Further, the first separation channel 5 is linear, spiral or arc-shaped.

Preferably, the first separation channels 5 are disposed in the separation seat 3 in a straight line and inclined, and the included angles between the plurality of first separation channels 5 and the tangent line of the separation chamber 4 decrease gradually from top to bottom, i.e. the included angle between the first separation channel 5 located at the lowest position and the tangent line of the separation chamber 4 is the smallest. In the actual use process, as the centrifugal force direction of the grinding medium always points to the tangential direction of the rotation center (the transmission shaft 9) when the grinding medium makes centrifugal movement, the separation cavity 4 and the transmission shaft 9 are coaxially arranged, and the tangential direction of the separation cavity 4 is the same as the tangential direction of the transmission shaft 9; since the second separation passage 12 of the second-stage separation mechanism 1 is closer to the tangential direction of the rotation center than the second separation passage 12 of the first-stage separation mechanism 1, the grinding medium is relatively less resistant to separation in the second separation passage 12 of the second-stage separation mechanism 1 than in the second separation passage 12 of the first-stage separation mechanism 1, and therefore the grinding medium is more easily separated in the second separation passage, further improving the separation effect of the grinding medium.

Further, the lengths of the plurality of first separation passages 5 are stepwise increased from top to bottom in the horizontal direction.

Since the diameter of the separation chamber 4 arranged from bottom to top decreases stepwise, the radial width of the separation seat 3 increases and the length of the first separation channel 5 arranged on the separation seat 3 can correspondingly increase. In the actual use process, part of materials can overcome the centrifugal force under the action of the pressure in the cylinder 7 or the pressure of the feed pump 15 and move from the first separation channel 5 to the second separation channel 12, the length of the first separation channel 5 is gradually increased, the distance and difficulty that grinding media pass through the first separation channel 5 and directly enter the second separation channel 12 can be gradually increased, and the screening efficiency of the grinding media and the materials is further improved.

Further, a plurality of the separation seats 3 and the connection structure 2 are integrally constructed. The production and processing of the fractionation device are convenient.

All technical features in the embodiment can be freely combined according to actual needs.

The foregoing embodiments are preferred embodiments of the present utility model, and in addition, the present utility model may be implemented in other ways, and any obvious substitution is within the scope of the present utility model without departing from the concept of the present utility model.

Claims (9)

1. A fractionation apparatus, characterized in that: the device comprises a connecting structure (2) and a plurality of separating mechanisms (1), wherein the separating mechanisms (1) comprise separating seats (3), separating cavities (4) penetrating through the separating seats (3) and a plurality of first separating channels (5) penetrating through the separating seats (3) respectively, the plurality of first separating channels (5) of the separating mechanisms (1) are communicated with the corresponding separating cavities (4) respectively, and the separating seats (3) of the separating mechanisms (1) are connected in a stacked mode; two adjacent separation cavities (4) are communicated with each other; the diameters of the separation cavities (4) are gradually decreased from top to bottom, and the connecting structure (2) is connected with the lowest separation seat (3).

2. A fractionation apparatus according to claim 1 wherein: the first separation channel (5) is in a straight line, spiral or arc shape.

3. A fractionation apparatus according to claim 1 wherein: the plurality of separating seats (3) and the connecting structure (2) are integrally constructed.

4. A fractionation apparatus according to claim 1 wherein: the lengths of a plurality of the first separation channels (5) are gradually increased from top to bottom.

5. A sand mill having the classifying device, characterized in that: the device comprises a grading separation device, a frame (6), a cylinder (7) arranged on the frame (6), a driving mechanism arranged in the frame (6), a rotor structure (10) accommodated in the cylinder (7), an inner stator (8) arranged on the inner side wall of the cylinder (7) and a transmission shaft (9) rotatably arranged in the cylinder (7), wherein the grading separation device is arranged in the cylinder (7); one end of the transmission shaft (9) sequentially penetrates through the inner stator (8), the plurality of separation cavities (4) and the connecting structure (2) from top to bottom and then is in transmission connection with the rotor structure (10), the transmission shaft (9) is in transmission connection with the connecting structure (2), and the other end of the transmission shaft (9) penetrates through the cylinder body (7) and then is connected with the output end of the driving mechanism; the inner stator (8) can protrude into a plurality of separation cavities (4) between the transmission shaft (9) and the separation seat (3).

6. A sand mill having the classifying device according to claim 5, wherein: the separation cavity (4) comprises a first discharging channel (11) formed by surrounding the side wall of the inner stator (8) and the side wall of the transmission shaft (9) and a plurality of second separation channels (12) formed by surrounding the side wall of the inner stator (8) and the inner side walls of the plurality of separation seats (3) respectively, wherein the first discharging channel (11) is communicated with a second separation channel (12) at the lowest part, two adjacent second separation channels (12) are mutually communicated, and the plurality of first separation channels (5) are respectively communicated with the corresponding second separation channels (12).

7. A sand mill having the classifying device according to claim 6, wherein: the sand mill is still including setting up in feed inlet (13) of the one end that inner stator (8) was kept away from in barrel (7) and setting up in barrel (7) discharge gate (14) that are close to the one end of inner stator (8), discharge gate (14) and first discharge channel (11) intercommunication, feed inlet (13) are respectively with first separation channel (5) and second separation channel (12) intercommunication.

8. A sand mill having the classifying device according to claim 7, wherein: the sand mill also comprises an end cover (16) which is covered at one end of the cylinder body (7), a bulge (17) which is arranged on the end cover (16) and a second discharging channel (18) which is formed by surrounding the inner side wall of the bulge (17) and the outer side wall of the transmission shaft (9); the discharge hole (14) penetrates through the protruding portion (17), and the first discharge channel (11) is communicated with the discharge hole (14) through the second discharge channel (18).

9. A sand mill having the classifying device according to claim 6, wherein: the grading separation device further comprises a baffle block (19) formed by protruding outwards from the side wall of the top end of the separation seat (3), the baffle block (19) can protrude into the separation cavity (4) corresponding to the baffle block, and the second separation channel (12) is formed by surrounding the side wall of the separation seat (3), the baffle block (19) and the side wall of the inner stator (8).