Discharging barrel assembly, discharging mechanism and pulping device

Abstract

The utility model relates to a discharging barrel assembly, a discharging mechanism and a pulping device. The discharging cylinder assembly comprises a containing cylinder, the containing cylinder is provided with a containing cavity used for containing slurry and a discharging port communicated with the containing cavity, the containing cavity is further used for containing a pumping impeller, and the slurry in the containing cavity is discharged out of the discharging port under the action of the pumping impeller; the containing cylinder is further provided with an annular inner wall which defines a containing cavity, the annular inner wall is arranged around the pumping impeller in the circumferential direction of the pumping impeller, and a plurality of protrusions are distributed on the annular inner wall. Therefore, as the bulges are distributed on the annular inner wall, the slurry moving along the annular inner wall can be forcibly dispersed and scattered by the bulges, that is, the slurry is further scattered and scattered by utilizing the time of pumping and discharging the slurry, the dispersion effect of the slurry is greatly improved, the quality of the slurry is improved, the slurry preparation time is favorably shortened, and the slurry preparation efficiency is improved. The production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery manufacturing equipment, in particular to a discharge barrel component, a discharge mechanism and a pulping device. Background Art

[0002] Pulping technology is widely used in modern industrial production, such as lithium battery pulping technology. In the pulping process of lithium batteries, the pulping device can be a pulping machine or a disperser. In actual production, the powder and liquid are transported to the pulping device for mixing and dispersion to obtain a homogeneous slurry. The more uniform the slurry obtained, the better the performance of the prepared lithium battery. The pulping device includes a discharge mechanism, which includes a pumping chamber and an impeller arranged in the pumping chamber. The slurry formed by the mixture of powder and liquid enters the pumping chamber and is discharged to the outside of the pumping chamber under the action of the impeller, thereby realizing the discharge of the slurry. However, the traditional pulping device has poor mixing and dispersion effects on the slurry, resulting in a long pulping time and low production efficiency. Utility Model Content

[0003] Based on this, it is necessary to provide a discharge barrel assembly, a discharge mechanism and a pulping device that improve the above defects in order to address the problem that the pulping device in the prior art has poor mixing and dispersing effect on the pulp, resulting in long pulping time and low production efficiency.

[0004] A discharge barrel assembly comprises a receiving barrel, wherein the receiving barrel has a receiving chamber for receiving slurry and a discharge port communicated with the receiving chamber, the receiving chamber is also used to receive a pumping impeller, and the slurry in the receiving chamber is discharged from the discharge port under the action of the pumping impeller;

[0005] The receiving tube further comprises an annular inner wall which encloses and forms the receiving cavity. The annular inner wall is arranged around the pumping impeller along the circumferential direction of the pumping impeller, and a plurality of protrusions are distributed on the annular inner wall.

[0006] In one embodiment, the protrusions are arranged in multiple rows, the multiple rows of protrusions are arranged at intervals along the circumferential direction of the pumping impeller, and the protrusions in each row are arranged at intervals along the axial direction of the pumping impeller.

[0007] In one embodiment, the protrusions in every two adjacent rows are arranged in a staggered manner in the circumferential direction of the pumping impeller.

[0008] In one of the embodiments, the protrusion has a sharp corner on at least one side in the circumferential direction of the pumping impeller.

[0009] In one embodiment, the cross-sectional shape of each of the protrusions is one or more of a diamond, triangle, square, rectangle, circle, ellipse, spindle and teardrop shape.

[0010] In one embodiment, the discharge port passes through the annular inner wall.

[0011] In one of the embodiments, the discharge direction of the discharge port is tangent to the annular inner wall.

[0012] In one embodiment, the receiving cylinder includes an inner cylinder and an outer cylinder sleeved outside the inner cylinder, the inner wall of the inner cylinder is the annular inner wall, and an interlayer space is formed between the inner cylinder and the outer cylinder, and the interlayer space is used for coolant to flow through.

[0013] In one embodiment, the outer cylinder is provided with a liquid inlet hole and a liquid outlet hole which are connected with the interlayer space, the liquid inlet hole is used for allowing the coolant to enter the interlayer space to pass through, and the liquid outlet hole is used for allowing the coolant in the interlayer space to flow out.

[0014] A discharge mechanism comprises the discharge barrel assembly and the pumping impeller as described in any of the above embodiments.

[0015] A pulping device comprises the discharge mechanism as described in any one of the above embodiments.

[0016] When the above-mentioned discharge barrel assembly, discharge mechanism and pulping device are actually used, the pumping impeller is controlled to rotate, and the pulp in the receiving chamber moves along the annular inner wall under the drive of the pumping impeller until the pulp reaches the discharge port and is discharged. Since there are protrusions distributed on the annular inner wall, the pulp moving along the annular inner wall will be forcibly dispersed and broken up by the protrusions, that is, the time of pumping and discharging the pulp is used to further break up and disperse the pulp, which greatly improves the dispersion effect of the pulp, improves the pulp quality, and is conducive to shortening the pulping time and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a receiving tube of a discharge assembly in one embodiment of the utility model;

[0018] Figure 2 for Figure 1 The schematic diagram of the structure of the receiving tube shown in another viewing angle;

[0019] Figure 3 for Figure 1 A cross-sectional view of the receiving tube shown;

[0020] Figure 4 for Figure 1 A bottom view of the receiving tube shown;

[0021] Figures 5 to 10 Schematic diagrams of the structures of the protrusions on the annular inner wall in different embodiments;

[0022] Fig.11The viscosity of the slurry in Example 1 and the comparative example changes with time. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial U", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0028] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0029] An embodiment of the utility model provides a pulping device for stirring and mixing powder and liquid, and dispersing the formed slurry, so as to obtain a slurry with a certain viscosity and a certain solid content. Specifically, the pulping device includes a solid-liquid mixing mechanism, a dispersing mechanism and a discharging mechanism. The solid-liquid mixing mechanism is used to stir and mix the powder and liquid, and convey the mixed slurry to the dispersing mechanism. The dispersing mechanism is used to further break up and disperse the slurry, and convey the dispersed slurry to the discharging mechanism. The discharging mechanism is used to pump the slurry out.

[0030] It should be noted that the pulping device may be a pulping machine. Of course, in other embodiments, the pulping device may also be a disperser, which is not limited here.

[0031] See also Figures 1 to 4 As shown, in an embodiment of the present application, the discharge mechanism includes a discharge barrel assembly and a pumping impeller (not shown). The discharge barrel assembly is used to accommodate slurry, and the pumping impeller is used to discharge the slurry in the discharge barrel assembly. The discharge barrel assembly includes a receiving barrel 10, and the receiving barrel 10 has a receiving chamber 11 for accommodating slurry and a discharge port 14 connected to the receiving chamber 11. The pumping impeller is disposed in the receiving chamber 11, and the pumping impeller can be controlled to rotate relative to the receiving barrel 10 to discharge the slurry in the receiving chamber 11 from the discharge port 14. Among them, the receiving barrel 10 also has an annular inner wall 12 enclosing the receiving chamber 11, and the annular inner wall 12 is along the circumferential direction V (see Figure 2) of the pumping impeller. Figure 4) is arranged around the pumping impeller, and a plurality of protrusions 13 are distributed on the annular inner wall 12. It should be noted that the pumping impeller can be driven to rotate by a rotating drive member such as a motor, which is not limited here.

[0032] Thus, in actual use, the pumping impeller is controlled to rotate, and the slurry in the receiving chamber 11 moves along the annular inner wall 12 under the drive of the pumping impeller until the slurry reaches the discharge port 14 and is discharged. Since the annular inner wall 12 is provided with protrusions 13, the slurry moving along the annular inner wall 12 will be forcibly dispersed and broken up by the protrusions 13, that is, the slurry is further broken up and dispersed by utilizing the time of pumping out the slurry, which greatly improves the dispersion effect of the slurry, improves the slurry quality, and is conducive to shortening the pulping time and improving production efficiency.

[0033] See also Figure 5 As shown, in some embodiments, the protrusions 13 are arranged in multiple rows, and the multiple rows of protrusions 13 are arranged at intervals along the circumferential direction V of the pumping impeller. The protrusions 13 in each row are arranged at intervals along the axial direction U of the pumping impeller. In this way, driven by the pumping impeller, the slurry in the receiving chamber 11 moves along the annular inner wall 12 (i.e., moves along the circumferential direction V of the pumping impeller), so that the slurry passes through each row of protrusions 13 in turn and is dispersed and broken up multiple times until it reaches the discharge port 14 and is discharged.

[0034] Optionally, every two adjacent rows of protrusions 13 are staggered in the circumferential direction V of the pumping impeller. That is, in two adjacent rows of protrusions 13, the positions of one protrusion 13 in one row and two protrusions 13 in the other row are opposite to each other in the circumferential direction V of the pumping impeller. In this way, when the slurry moves along the annular inner wall 12, after being forcibly dispersed and broken up by one row of protrusions 13, the slurry is again forcibly dispersed and broken up when it reaches the next row of protrusions 13, which greatly improves the dispersion effect.

[0035] Optionally, each protrusion 13 has a sharp corner 131 on at least one side in the circumferential direction V of the pumping impeller. Since the slurry in the receiving chamber 11 moves along the annular inner wall 12 (i.e., moves along the circumferential direction V of the pumping impeller) driven by the pumping impeller, the slurry will be strongly dispersed by the sharp corners 131 of each protrusion 13 during the movement, which is beneficial to improve the dispersion effect. It should be noted that the sharp corner 131 is not necessary. In other embodiments, the protrusion 13 may also be provided with a sharp corner 131, which is not limited here.

[0036] See also Figures 5 to 10 Optionally, the cross-sectional shape of each protrusion 13 can be one or more of a rhombus, a triangle, a square, a rectangle, a circle, an ellipse, a spindle, and a water drop shape. Of course, in other embodiments, the cross-sectional shape of each protrusion 13 can also be other regular or irregular shapes, which is not limited here.

[0037] Please continue to see Figures 1 to 4 As shown, specifically in the embodiment, the discharge port 14 passes through the annular inner wall 12 , so that the slurry moving along the annular inner wall 12 can be discharged from the discharge port 14 when reaching the discharge port 14 .

[0038] Optionally, the discharge direction of the discharge port 14 is tangent to the annular inner wall 12, ensuring that the slurry can be discharged more smoothly from the discharge port 14. It should be noted that the discharge direction of the discharge port 14 refers to the movement direction of the slurry discharged from the discharge port 14. The discharge direction of the discharge port 14 being tangent to the annular inner wall 12 should be understood as allowing a certain deviation, and the two can be roughly tangent.

[0039] Specifically in the embodiment, the receiving tube 10 includes an inner tube 101 and an outer tube 102 sleeved outside the inner tube 101. The inner wall of the inner tube 101 is the annular inner wall 12. An interlayer space 103 is formed between the inner tube 101 and the outer tube 102, and the interlayer space 103 is used for cooling liquid to flow through, so that the cooling liquid takes away the heat of the slurry in the receiving chamber 11, that is, the slurry in the receiving chamber 11 is cooled to prevent the temperature of the slurry discharged from the discharge port 14 from being too high.

[0040] It should be noted that the inner cylinder 101 and the outer cylinder 102 can be welded into a whole, or can be assembled into a whole in a detachable manner, which is not limited here.

[0041] Furthermore, the outer cylinder 102 is provided with a liquid inlet 104 and a liquid outlet 105 both of which are in communication with the interlayer space 103. The liquid inlet 104 is used to communicate with an external delivery pipeline, so that the coolant delivered by the external delivery pipeline enters the interlayer space 103 through the liquid inlet 104. The liquid outlet 105 is used to communicate with an external drainage pipeline, so that the coolant in the interlayer space 103 is discharged to the external drainage pipeline through the liquid outlet 105, thereby taking away the heat of the slurry in the receiving chamber 11.

[0042] In order to illustrate the beneficial effects of the pulping device of the present application, the inventor of the present application conducted a comparative experiment, that is, a comparison was made between Example 1 and the comparative example. The difference between Example 1 and the comparative example is that: Example 1 uses a pulping device comprising Figures 1 to 5 The pulping device of the discharge barrel assembly shown is used for pulping, while the pulping device in the prior art is used for pulping in the comparative example, that is, the discharge barrel assembly of the pulping device in the comparative example does not have the protrusion 13 . Fig.11 The viscosity of the slurry in Example 1 and the comparative example changes with time. Fig.11It can be seen that within the same time t1, the viscosity n1 of the slurry in Example 1 is greater than the viscosity n2 of the slurry in the comparative example; when the viscosity is reduced to n1, the time t1 required in Example 1 is less than the time t2 required in the comparative example. It can be seen that the pulping efficiency of the pulping device of the present application is higher, which is conducive to improving the pulp quality and production efficiency.

[0043] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0044] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A discharge barrel assembly, characterized in that: The invention comprises a receiving tube (10), wherein the receiving tube (10) has a receiving chamber (11) for receiving slurry and a discharge port (14) connected to the receiving chamber (11), wherein the receiving chamber (11) is also used to receive a pumping impeller, and the slurry in the receiving chamber (11) is discharged from the discharge port (14) under the action of the pumping impeller; The receiving tube (10) further comprises an annular inner wall (12) which encloses and forms the receiving chamber (11); the annular inner wall (12) is arranged around the pumping impeller along the circumferential direction (V) of the pumping impeller; and a plurality of protrusions (13) are distributed on the annular inner wall (12).

2. The discharge barrel assembly according to claim 1, characterized in that: The protrusions (13) are arranged in multiple rows, the multiple rows of protrusions (13) are arranged at intervals along the circumferential direction (V) of the pumping impeller, and the protrusions (13) in each row are arranged at intervals along the axial direction (U) of the pumping impeller.

3. The discharge barrel assembly according to claim 2, characterized in that: Each two adjacent rows of protrusions (13) are arranged in a staggered manner in the circumferential direction (V) of the pumping impeller.

4. The discharge barrel assembly according to claim 1, characterized in that: The protrusion (13) has a sharp corner (131) on at least one side in the circumferential direction (V) of the pumping impeller.

5. The discharge barrel assembly according to claim 1, characterized in that: The cross-sectional shape of each protrusion (13) is one or more of a rhombus, a triangle, a square, a rectangle, a circle, an ellipse, a spindle and a water drop shape.

6. The discharge barrel assembly according to any one of claims 1 to 5, characterized in that: The discharge port (14) passes through the annular inner wall (12).

7. The discharge barrel assembly according to claim 6, characterized in that: The discharge direction of the discharge port (14) is tangent to the annular inner wall (12).

8. The discharge barrel assembly according to any one of claims 1 to 5, characterized in that: The receiving tube (10) comprises an inner tube (101) and an outer tube (102) sleeved on the outer side of the inner tube (101); the inner wall of the inner tube (101) is the annular inner wall (12); an interlayer space (103) is formed between the inner tube (101) and the outer tube (102); and the interlayer space (103) is used for cooling liquid to flow through.

9. The discharge barrel assembly according to claim 8, characterized in that: The outer cylinder (102) is provided with a liquid inlet hole (104) and a liquid outlet hole (105) which are in communication with the interlayer space (103); the liquid inlet hole (104) is used for allowing the coolant to enter the interlayer space (103) to pass through, and the liquid outlet hole (105) is used for allowing the coolant in the interlayer space (103) to flow out.

10. A discharging mechanism, characterized in that: It comprises the discharge barrel assembly as described in any one of claims 1 to 9 and the pumping impeller.

11. A pulping device, characterized in that: It comprises the discharge mechanism as claimed in claim 10.

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