Squirrel-cage shearing structure and pulping machine

Abstract

The squirrel-cage type shearing structure comprises an upper dispersing assembly and a lower dispersing assembly, each dispersing assembly comprises a stator assembly and a shearing rotor, the two dispersing assemblies are arranged in a face-to-face mode, and a baffle is arranged between the two dispersing assemblies. The stator assembly comprises a stator transverse plate and a stator annular plate, the stator transverse plate is arranged in the radial direction, a plurality of stator axial grooves penetrating in the axial direction are formed in the stator transverse plate, the stator annular plate is arranged in the axial direction, and stator radial grooves penetrating in the radial direction are formed in the stator annular plate; the shearing rotor is provided with a rotor base plate in the radial direction, a rotor ring is arranged on the rotor base plate in the axial direction in an extending mode, a rotor axial groove penetrating in the axial direction is formed in the rotor base plate, and a rotor radial groove penetrating in the radial direction is formed in the rotor ring. The axial shearing channel and the radial shearing channel are respectively arranged on the dispersing component, and the liquid is sheared and dispersed through the combination of axial shearing and radial shearing, so that the shearing and dispersing effect is improved, and the pulping efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of pulping equipment technology, and in particular to a squirrel cage shearing structure and a pulping machine. Background Technology

[0002] In the field of slurry preparation, slurry mixers utilize the high-speed rotation of the rotor to generate shear force between the rotor and the stator, which fully disperses the liquid before it enters the mixing chamber and mixes it thoroughly with the powder, thereby forming a slurry with high concentration and high viscosity.

[0003] Most current pulp dispersion devices use a single axial shear or a single radial shear structure. This shear structure has a relatively simple shearing method, relatively poor shearing effect, and long pulping time, which affects the pulping efficiency of the pulper. Utility Model Content

[0004] To address the shortcomings of existing slurry dispersion devices, the applicant provides a rationally structured squirrel-cage shearing structure and slurry maker that combines axial and radial shearing to improve shearing and dispersion effects and increase slurry making efficiency.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A squirrel cage shearing structure includes two sets of upper and lower dispersion components. Each set of dispersion components includes a stator assembly and a shearing rotor. The two sets of dispersion components are arranged facing each other, and a baffle is provided between the two sets of dispersion components.

[0007] The stator assembly includes a stator cross plate and a stator ring plate. The stator cross plate is arranged radially and has several axially penetrating stator axial grooves. The stator ring plate is arranged axially and has radially penetrating stator radial grooves.

[0008] The shearing rotor has a rotor base plate arranged radially, a rotor ring extending axially from the rotor base plate, an axially penetrating rotor axial groove on the rotor base plate, and a radially penetrating rotor radial groove on the rotor ring.

[0009] The shearing rotor is inserted inside the stator assembly. The stator axial slots of the stator assembly and the rotor axial slots of the shearing rotor correspond to each other, forming an axial shearing channel. The stator radial slots of the stator assembly and the rotor radial slots of the shearing rotor correspond to each other, forming a radial shearing channel.

[0010] As a further improvement to the above technical solution:

[0011] In the lower set of dispersion components, the stator horizontal plate of the stator assembly and the rotor base plate of the shear rotor are located on the bottom side, and the stator ring plate of the stator assembly and the rotor ring of the shear rotor are axially upward; in the upper set of dispersion components, the stator horizontal plate of the stator assembly and the rotor base plate of the shear rotor are located on the top side, and the stator ring plate of the stator assembly and the rotor ring of the shear rotor are axially downward.

[0012] The stator axial slots and rotor axial slots are straight slots.

[0013] The stator axial slot and the rotor axial slot are inclined slots, and the inclination direction of the stator axial slot and the rotor axial slot are opposite; the stator axial slot is an inclined slot that inclines outward from top to bottom, and the rotor axial slot is an inclined slot that inclines inward from top to bottom; or, the stator axial slot is an inclined slot that inclines inward from top to bottom, and the rotor axial slot is an inclined slot that inclines outward from top to bottom.

[0014] The stator radial slots and rotor radial slots are straight slots.

[0015] The stator radial slots and rotor radial slots are inclined slots, and the inclination directions of the stator radial slots and rotor radial slots are opposite; the stator radial slots are inclined slots with an inclination direction from the outside to the inside that is opposite to the rotation direction, and the rotor radial slots are inclined slots with an inclination direction from the outside to the inside that is the same as the rotation direction; or, the stator radial slots are inclined slots with an inclination direction from the outside to the inside that is the same as the rotation direction, and the rotor radial slots are inclined slots with an inclination direction from the outside to the inside that is opposite to the rotation direction.

[0016] A sleeve is provided between the shearing rotor and the baffle; the shearing rotor and the sleeve are two independent parts, or the shearing rotor and the sleeve are integrally formed.

[0017] The stator horizontal plate has a central through hole; the stator horizontal plate and the stator ring plate are two independent parts, or the stator horizontal plate and the stator ring plate are integrally formed.

[0018] A pulping machine includes a housing assembly with a liquid inlet chamber, a dispersion chamber, a mixing chamber, and a powder inlet chamber. A cooling chamber is located around the outer periphery of the dispersion chamber. The housing assembly has an inlet connecting to the liquid inlet chamber and an outlet connecting to the mixing chamber. A squirrel-cage shearing structure is installed within the dispersion chamber. The squirrel-cage shearing structure includes upper and lower dispersion components. Each dispersion component includes a stator assembly and a shearing rotor. The two dispersion components are arranged face-to-face, with a baffle between them. The stator assembly includes a stator cross plate and a stator ring plate. The stator cross plate is radially arranged and has several axially penetrating stator axial grooves. The stator ring plate is axially arranged and has radially penetrating stator axial grooves. The stator has a radial slot; the shearing rotor has a rotor base plate arranged radially, and a rotor ring extends axially from the rotor base plate. The rotor base plate has an axially penetrating rotor axial slot, and the rotor ring has a radially penetrating rotor radial slot; the shearing rotor is inserted into the stator assembly, and the stator axial slot of the stator assembly and the rotor axial slot of the shearing rotor correspond to each other to form an axial shearing channel; the stator radial slot of the stator assembly and the rotor radial slot of the shearing rotor correspond to each other to form a radial shearing channel; the baffle divides the dispersion chamber into a lower dispersion chamber and an upper dispersion chamber, and the lower dispersion chamber and the upper dispersion chamber are connected through a flow chamber; a set of dispersion components are respectively arranged in the lower dispersion chamber and the upper dispersion chamber.

[0019] As a further improvement to the above technical solution:

[0020] The mixing chamber is equipped with a mixing rotor and a mixing stator, and the powder inlet chamber is equipped with a powder conveying rotor and a shearing rotor. The baffle, mixing rotor and powder conveying rotor are sleeved on the main shaft; there is a gap between the wall of the central through hole of the stator horizontal plate and the main shaft.

[0021] The beneficial effects of this utility model are as follows:

[0022] The dispersion structure of this invention adopts a relatively closed cage-type shear structure, which can create forced convection in the slurry, thus improving the dispersion effect and efficiency. Axial and radial shear channels are respectively formed on the dispersion component. The liquid is sheared and dispersed through a combination of axial and radial shearing, improving the shear dispersion effect and increasing the slurry preparation efficiency. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model.

[0024] Figure 2 This is a 3D view of the stator assembly.

[0025] Figure 3 This is a three-dimensional view of the rotor.

[0026] Figure 4 This is the first embodiment of the axial slots for the stator assembly and rotor.

[0027] Figure 5 This is a second embodiment of the axial slots for the stator assembly and rotor.

[0028] Figure 6 This is a third embodiment of the axial slots for the stator assembly and rotor.

[0029] Figure 7 This is the first embodiment of radial slots for the stator assembly and rotor.

[0030] Figure 8 This is a second embodiment of radial slots for the stator assembly and rotor.

[0031] Figure 9 This is a second embodiment of radial slots for the stator assembly and rotor.

[0032] In the picture:

[0033] 1. Housing assembly; 2. Stator assembly; 21. Stator cross plate; 211. Stator axial slot; 212. Central through hole; 22. Stator ring plate; 221. Stator radial slot; 3. Shear rotor; 31. Rotor base plate; 311. Rotor axial slot; 32. Rotor ring; 321. Rotor radial slot; 4. Baffle; 5. Sleeve; 6. Mixing rotor; 7. Mixing stator; 8. Powder conveying rotor; 9. Main shaft;

[0034] 10. Liquid inlet chamber; 20. Dispersion chamber; 201. Lower dispersion chamber; 202. Upper dispersion chamber; 203. Flow chamber; 30. Mixing chamber; 40. Powder inlet chamber; 50. Liquid inlet; 60. Liquid outlet; 70. Cooling chamber. Detailed Implementation

[0035] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0036] like Figure 1 As shown, the housing assembly 1 of this utility model is provided with a liquid inlet chamber 10, a dispersion chamber 20, a mixing chamber 30, and a powder inlet chamber 40 arranged sequentially from bottom to top. A cooling chamber 70 is provided on the outer periphery of the dispersion chamber 20. A liquid inlet 50 is provided on the housing assembly 1, connecting the liquid inlet chamber 10, and a liquid outlet 60 is provided, connecting the mixing chamber 30. Two sets of dispersion components are arranged facing each other in the dispersion chamber 20, and a baffle 4 is provided between the two sets of dispersion components. The baffle 4 divides the dispersion chamber 20 into a lower dispersion chamber 201 and an upper dispersion chamber 202, which are connected by a flow passage 203. A set of dispersion components is provided in the lower dispersion chamber 201 and the upper dispersion chamber 202 respectively. A mixing rotor 6 and a mixing stator 7 are provided in the mixing chamber 30, and a powder conveying rotor 8 is provided in the powder inlet chamber 40. The baffle 4, the mixing rotor 6, and the powder conveying rotor 8 are sleeved on the main shaft 9 and can rotate with the main shaft 9.

[0037] like Figure 1 As shown, each set of dispersion components includes a stator assembly 2 and a shearing rotor 3. The stator assembly 2 is fixed on the housing assembly 1. The shearing rotor 3 is sleeved on the main shaft 9 and can rotate with the main shaft 9. A sleeve 5 is sleeved on the main shaft 9 at the axial part between the shearing rotor 3 and the baffle 4 to axially position the shearing rotor 3 and the baffle 4. The shearing rotor 3 and the sleeve 5 can be two independent parts or integrally formed into one part.

[0038] like Figure 1 , Figure 2 As shown, the stator assembly 2 includes a stator horizontal plate 21 and a stator ring plate 22. The stator horizontal plate 21 and the stator ring plate 22 can be two independent parts or integrally formed into one part. The stator horizontal plate 21 is radially arranged and has several axially penetrating stator axial grooves 211. A central through hole 212 is formed in the center of the stator horizontal plate 21, and there is a gap between the hole wall of the central through hole 212 and the main shaft 9. A stator ring extends axially from the stator ring plate 22, and a radially penetrating stator radial groove 221 is formed on the stator ring.

[0039] like Figure 1 , Figure 3 As shown, the shearing rotor 3 is provided with a rotor base plate 31 in the radial direction, and a rotor ring 32 is provided on the rotor base plate 31 in the axial direction. The rotor base plate 31 is provided with an axially penetrating rotor axial groove 311, and the rotor ring 32 is provided with a radially penetrating rotor radial groove 321.

[0040] like Figure 1 As shown, the shearing rotor 3 is inserted inside the stator assembly 2, the rotor base plate 31 is located inside the stator transverse plate 21, and the rotor ring 32 is located inside the stator ring plate 22. The stator axial groove 211 of the stator assembly 2 and the rotor axial groove 311 of the shearing rotor 3 correspond to each other, forming an axial shearing channel. The stator radial groove 221 of the stator assembly 2 and the rotor radial groove 321 of the shearing rotor 3 correspond to each other, forming a radial shearing channel. In the lower dispersion cavity 201, the stator transverse plate 21 of the stator assembly 2 and the rotor base plate 31 of the shearing rotor 3 are located on the bottom side, and the stator ring plate 22 of the stator assembly 2 and the rotor ring 32 of the shearing rotor 3 are axially upward. In the upper dispersion cavity 202, the stator transverse plate 21 of the stator assembly 2 and the rotor base plate 31 of the shearing rotor 3 are located on the top side, and the stator ring plate 22 of the stator assembly 2 and the rotor ring 32 of the shearing rotor 3 are axially downward.

[0041] like Figure 4 As shown, the stator axial groove 211 and the rotor axial groove 311 can be straight grooves. Straight grooves offer moderate conveying and dispersing effects, making them suitable for most operating conditions. Figure 5 , Figure 6As shown, the stator axial groove 211 and the rotor axial groove 311 can also be inclined grooves, with the inclination directions of the stator axial groove 211 and the rotor axial groove 311 being opposite; for example Figure 5 As shown, for applications requiring higher conveying capacity, the stator axial groove 211 can be configured as an outward-sloping groove from top to bottom, while the rotor axial groove 311 can be configured as an inward-sloping groove from top to bottom; for example... Figure 6 As shown, for working conditions requiring higher dispersion capability, the stator axial groove 211 can be set as an inclined groove that slopes inward from top to bottom, and the rotor axial groove 311 can be set as an inclined groove that slopes outward from top to bottom.

[0042] like Figure 7 As shown, the stator radial slot 221 and the rotor radial slot 321 can be straight slots. Straight slots offer moderate conveying and dispersing effects, making them suitable for most operating conditions. Figure 8 , Figure 9 As shown, the stator radial slot 221 and the rotor radial slot 321 can also be inclined slots, with the inclination directions of the stator radial slot 221 and the rotor radial slot 321 being opposite; for example Figure 8 As shown, for applications requiring higher conveying capacity, the stator radial slot 221 can be configured as an inclined slot with an inclination direction opposite to the rotation direction from the outside to the inside, while the rotor radial slot 321 can be configured as an inclined slot with an inclination direction in the same direction as the rotation from the outside to the inside; for example Figure 9 As shown, for working conditions requiring higher dispersion capability, the stator radial slot 221 can be set as an inclined slot with the same inclination direction from the outside to the inside as the rotation direction, and the rotor radial slot 321 can be set as an inclined slot with the opposite inclination direction from the outside to the inside as the rotation direction.

[0043] In actual use, the main shaft 9 is driven to rotate at high speed by the drive mechanism, thereby driving the shearing rotor 3, baffle 4, mixing rotor 6, and powder conveying rotor 8 to rotate at high speed. The liquid enters the liquid inlet chamber 10 from the liquid inlet 50, then turns to enter the dispersion chamber 20, and is dispersed by the lower dispersion component and the upper dispersion component in sequence before entering the mixing chamber 30. The powder enters from the powder inlet chamber 40 and is conveyed to the mixing chamber 30 by the powder conveying rotor 8. The liquid and powder are mixed evenly in the mixing chamber 30 by the mixing rotor 6 and the mixing stator 7, and then output from the liquid outlet 60.

[0044] The dispersion structure of this invention adopts a relatively closed cage-type shear structure, which can create forced convection in the slurry, thus improving the dispersion effect and efficiency. Axial and radial shear channels are respectively formed on the dispersion component. The liquid is sheared and dispersed through a combination of axial and radial shearing, improving the shear dispersion effect and increasing the slurry preparation efficiency.

[0045] The above description is an explanation of the present utility model and not a limitation thereof. The present utility model can be modified in any form without departing from its spirit.

Claims

1. A squirrel-cage shearing structure, comprising upper and lower sets of dispersing components, each set of dispersing components comprising a stator assembly (2) and a shearing rotor (3), characterized in that: Two sets of dispersed components are arranged facing each other, and a baffle (4) is set between the two sets of dispersed components. The stator assembly (2) includes a stator horizontal plate (21) and a stator ring plate (22). The stator horizontal plate (21) is arranged radially and has several axially penetrating stator axial grooves (211). The stator ring plate (22) is arranged axially and has radially penetrating stator radial grooves (221). The shearing rotor (3) is provided with a rotor base plate (31) in the radial direction. A rotor ring (32) is provided on the rotor base plate (31) in the axial direction. An axially penetrating rotor axial groove (311) is provided on the rotor base plate (31), and a radially penetrating rotor radial groove (321) is provided on the rotor ring (32). The shearing rotor (3) is inserted inside the stator assembly (2). The stator axial groove (211) of the stator assembly (2) and the rotor axial groove (311) of the shearing rotor (3) correspond to each other to form an axial shearing channel. The stator radial groove (221) of the stator assembly (2) and the rotor radial groove (321) of the shearing rotor (3) correspond to each other to form a radial shearing channel.

2. The cage-type shearing structure according to claim 1, characterized in that: The stator horizontal plate (21) of the stator assembly (2) of the lower dispersion assembly and the rotor base plate (31) of the shear rotor (3) are located on the bottom side, and the stator ring plate (22) of the stator assembly (2) and the rotor ring (32) of the shear rotor (3) are axially upward; the stator horizontal plate (21) of the stator assembly (2) of the upper dispersion assembly and the rotor base plate (31) of the shear rotor (3) are located on the top side, and the stator ring plate (22) of the stator assembly (2) and the rotor ring (32) of the shear rotor (3) are axially downward.

3. The cage-type shearing structure according to claim 1, characterized in that: The stator axial groove (211) and the rotor axial groove (311) are straight grooves.

4. The cage-type shearing structure according to claim 1, characterized in that: The stator axial groove (211) and the rotor axial groove (311) are inclined grooves, and the inclination directions of the stator axial groove (211) and the rotor axial groove (311) are opposite; the stator axial groove (211) is an inclined groove that inclines outward from top to bottom, and the rotor axial groove (311) is an inclined groove that inclines inward from top to bottom. Alternatively, the stator axial groove (211) is an inclined groove that slopes inward from top to bottom, and the rotor axial groove (311) is an inclined groove that slopes outward from top to bottom.

5. The cage-type shearing structure according to claim 1, characterized in that: The stator radial slot (221) and the rotor radial slot (321) are straight slots.

6. The cage-type shearing structure according to claim 1, characterized in that: The stator radial slot (221) and the rotor radial slot (321) are inclined slots, and the inclination directions of the stator radial slot (221) and the rotor radial slot (321) are opposite. The stator radial slot (221) is an inclined slot with an inclination direction opposite to the rotation direction from the outside to the inside, and the rotor radial slot (321) is an inclined slot with an inclination direction in the same direction as the rotation direction from the outside to the inside. Alternatively, the stator radial slot (221) is an inclined slot with the same inclination direction from the outside to the inside as the rotation direction, and the rotor radial slot (321) is an inclined slot with the opposite inclination direction from the outside to the inside as the rotation direction.

7. The cage-type shearing structure according to claim 1, characterized in that: A sleeve (5) is provided between the shearing rotor (3) and the baffle (4); the shearing rotor (3) and the sleeve (5) are two independent parts, or the shearing rotor (3) and the sleeve (5) are integrally formed.

8. The cage-type shearing structure according to claim 1, characterized in that: The stator horizontal plate (21) has a central through hole (212); the stator horizontal plate (21) and the stator ring plate (22) are two independent parts, or the stator horizontal plate (21) and the stator ring plate (22) are integrally formed.

9. A pulping machine, wherein a housing assembly (1) is provided with a liquid inlet chamber (10), a dispersion chamber (20), a mixing chamber (30), and a powder inlet chamber (40), and a cooling chamber (70) is provided on the outer periphery of the dispersion chamber (20); and a liquid inlet (50) is provided on the housing assembly (1) communicating with the liquid inlet chamber (10), and a liquid outlet (60) is provided communicating with the mixing chamber (30); characterized in that: The dispersion chamber (20) is provided with the cage-type shear structure as described in claim 1. The baffle (4) divides the dispersion chamber (20) into a lower dispersion chamber (201) and an upper dispersion chamber (202). The lower dispersion chamber (201) and the upper dispersion chamber (202) are connected through the flow chamber (203). A set of dispersion components is respectively installed in the lower dispersion chamber (201) and the upper dispersion chamber (202).

10. The pulping machine according to claim 9, characterized in that: The mixing chamber (30) is equipped with a mixing rotor (6) and a mixing stator (7). The powder feeding chamber (40) is equipped with a powder conveying rotor (8), a shearing rotor (3), a baffle (4), a mixing rotor (6), and a powder conveying rotor (8) mounted on the main shaft (9). The central through hole (212) of the stator cross plate (21) has a gap between the hole wall and the main shaft (9).

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