Stirrer

Abstract

The utility model provides a stirrer which comprises a stirring container and a stirring device, and the stirring device is fixedly connected with the side wall of the stirring container; the stirring device comprises a bearing seat, a main shaft, an inner wall mounting seat and a propeller; the inner wall mounting seat and the bearing seat are mounted on the inner side and the outer side of the side wall of the stirring container respectively, the main shaft sequentially penetrates through the bearing seat, the side wall of the stirring container and the inner wall mounting seat, and the end, close to the inner wall mounting seat, of the main shaft is connected with the propeller; the end, close to the bearing seat, of the main shaft is used for being connected with an external driving device. According to the stirrer provided by the embodiment of the invention, the capability of decomposing and fusing residual harmful substances of the dissolving tank can be improved, the cost can be reduced for enterprises, workers only need to operate on the ground during maintenance, and the stirrer has the characteristics of simple structure and convenience in maintenance.

Description

Technical Field

[0001] The present application relates to the technical field of stirring equipment, and in particular to a stirrer. Background Art

[0002] The alkali furnace is an indispensable part of the papermaking pulping process. The alkali furnace is essentially different from ordinary boilers. Its combustion product is pulping waste liquid, and the combustion product is alkali ash melt. Ordinary boilers burn coal and produce coal slag. The dissolving tank is responsible for the storage of green liquor produced by the alkali furnace and fully mixes it with clean water or dilute white liquor. If the mixing is not sufficient, the alkalinity in the tank is uneven, and alkali blocks are easy to form, resulting in scaling and blockage of pipes and pump ends. The alkali furnace can not only provide green liquor for downstream, but also plays a vital role in environmental protection. When observing papermaking enterprises in the industry, whether the environmental protection is good or not depends on the pulping section. Whether the pulping is environmentally friendly or not depends on causticization. The standard for causticization inspection is to see whether its final treated product meets the standard after testing. The dissolving tank in the causticization section plays a vital role. Its ability to decompose, fuse, residual chemicals and waste residues is also self-evident for the final environmental protection inspection. At present, the conventional technical solution uses a vertical stirring device, which has the following disadvantages: 1. The stirring and fusion effect is not good. 2. Replacement and maintenance are cumbersome, and scaffolding must be set up inside the tank before construction work can be carried out, so there are great safety hazards. 3. The steam explosion during the special process of mixing the medium has a great impact on the impeller, so the original design is vertical mixing, and the entire bracket is fixed at the strongest top part of the tank. The advantages are that the entire mixing device is stable and impact-resistant, but the lever arm is too long, which will cause intermittent fluctuations, that is, the entire tank body shakes periodically. 4. The mixing vibration is large. Summary of the invention

[0003] The embodiment of the present application provides a stirrer, the stirrer comprising a stirring container and a stirring device, the stirring device being fixedly connected to a side wall of the stirring container;

[0004] The stirring device includes a bearing seat, a main shaft, an inner wall mounting seat and a propeller; the inner wall mounting seat and the bearing seat are respectively installed on the inner and outer sides of the side wall of the stirring container, and the main shaft passes through the bearing seat, the side wall of the stirring container and the inner wall mounting seat in sequence. One end of the main shaft close to the inner wall mounting seat is connected to the propeller, and the end of the main shaft close to the bearing seat is used to be connected to an external driving device.

[0005] In some embodiments of the present application, the inner wall mounting seat is a conical structure, and the small end of the conical structure corresponds to the propeller.

[0006] In some embodiments of the present application, the stirring device further includes a packing sleeve and a friction sleeve, wherein the packing sleeve is sleeved on the main shaft and disposed between the inner wall mounting seat and the propeller, and the friction sleeve is disposed between the packing sleeve and the main shaft.

[0007] In some embodiments of the present application, the friction sleeve is made of ceramic.

[0008] In some embodiments of the present application, the stirring device further comprises a packing gland, which is mounted on the inner wall mounting seat and supports the packing sleeve.

[0009] In some embodiments of the present application, the stirring device further includes a bearing, and the bearing is disposed in the bearing seat and sleeved on the main shaft.

[0010] In some embodiments of the present application, the bearing includes a first bearing and a second bearing, and the first bearing and the second bearing are respectively arranged at two ends of the bearing seat.

[0011] In some embodiments of the present application, a spacer sleeve is provided between the first bearing and the second bearing, and the spacer sleeve is sleeved on the main shaft.

[0012] In some embodiments of the present application, the bearing seat is a semicircular structure.

[0013] In some embodiments of the present application, the axis of the main shaft is parallel to the horizontal plane.

[0014] The agitator provided in the embodiment of the present application can improve the ability of the dissolving tank to decompose and fuse residual harmful substances, which can not only save costs for the enterprise, but also requires workers to work on the ground for maintenance, and has the characteristics of simple structure and easy maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the agitator of the present application;

[0017] Figure 2 It is a partial structural schematic diagram of the agitator in the embodiment of the present application;

[0018] Figure 3 yes Figure 2 A schematic diagram of another perspective of the structure in the embodiment;

[0019] Figure 4 yes Figure 2 Schematic diagram of the disassembly of the structure in the embodiment;

[0020] Figure 5 yes Figure 2 A schematic cross-sectional view of the structure in the embodiment. DETAILED DESCRIPTION

[0021] The present application is further described in detail below in conjunction with the accompanying drawings and examples. It is particularly noted that the following examples are only used to illustrate the present application, but are not intended to limit the scope of the present application. Similarly, the following examples are only some embodiments of the present application rather than all embodiments, and all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0022] The terms "first", "second", and "third" in the embodiments of the present application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second", and "third" can expressly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In the embodiments of the present application, all directional indications (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. The terms "including" and "having" in the embodiments of the present application and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or components inherent to these processes, methods, products, or devices.

[0023] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0024] See also Figure 1 , Figure 1It is a schematic diagram of the overall structure of an embodiment of the agitator of the present application, wherein the agitator 10 in this embodiment includes but is not limited to a stirring container 100 and a stirring device 200, wherein the stirring container 100 is used to hold the material to be stirred, and the stirring device 200 is fixedly connected to the side wall 110 of the stirring container 100, and specifically may be located near the bottom of the mixing container 100, thereby producing a lateral (in the direction of the arrow in the figure) propulsion mixing effect.

[0025] For more information, please see Figures 2 to 5 , Figure 2 is a partial structural schematic diagram of the agitator in the embodiment of the present application, Figure 3 yes Figure 2 A schematic diagram of another perspective of the structure in the embodiment, Figure 4 yes Figure 2 Schematic diagram of the structure split in the embodiment, Figure 5 yes Figure 2 A schematic cross-sectional view of the structure in the embodiment, wherein the stirring device 200 in this embodiment includes a bearing seat 210, a main shaft 220, an inner wall mounting seat 230 and a propeller 240.

[0026] Optionally, the inner wall mounting seat 230 and the bearing seat 210 are respectively installed on the inner and outer sides of the side wall 110 of the mixing container, and the main shaft 220 passes through the bearing seat 210, the side wall 110 of the mixing container and the inner wall mounting seat 230 in sequence. The end of the main shaft 220 close to the inner wall mounting seat 230 is connected to the propeller 240, and the end of the main shaft 220 close to the bearing seat 210 is used to connect to an external driving device (not shown in the figure), wherein the external driving device can be a structure such as a driving motor, which transmits rotation to the propeller 240 through the main shaft 220.

[0027] The connection position between the stirring device 200 and the side wall 110 of the mixing container 100 can be reinforced and provided with a matching flange-type circular hole so that the inner wall mounting seat 230 and the bearing seat 210 can be fixed thereon. The detailed features of this part are within the scope of understanding of those skilled in the art and will not be repeated here.

[0028] Optionally, the axis of the main shaft 220 in the embodiment of the present application can be parallel to the horizontal plane or the axis of the main shaft 220 can be set at a small angle to the horizontal plane, so that the stirring device 200 can produce a lateral or lateral propulsion mixing effect (such as Figure 1 shown).

[0029] Optionally, the stirring device 200 in the embodiment of the present application further includes a bearing 250, which is arranged in the bearing seat 210 and sleeved on the main shaft 220, and is used to support the main shaft 220 for rotation. The bearing 250 includes a first bearing 251 and a second bearing 252, wherein the first bearing 251 and the second bearing 252 are respectively arranged at both ends of the bearing seat 210, and support the main shaft 220 from two positions in the middle of the main shaft 220. A spacer 253 is provided between the first bearing 251 and the second bearing 252, and the spacer 253 is sleeved on the main shaft 220. The spacer 253 is used to space and limit the relative position of the first bearing 251 and the second bearing 252.

[0030] The first bearing 251 and the second bearing 252 can both be structures in which a self-aligning bearing and a deep groove ball bearing are matched, with the deep groove bearing on the outside and the self-aligning bearing on the inside, so as to absorb the vibration when the impeller rotates. Optionally, the spacer 253 can include an inner spacer 2531 and an outer spacer 2532 nested together.

[0031] The two ends of the bearing seat 210 in this embodiment are also provided with bearing end cover plates 211, which are covered at both ends of the bearing seat 210. The bearing end cover plates 211 are respectively provided with oil seals (i.e., sealing members) 212 for sealing lubricating oil. The lubricating oil can be injected through the bearing end cover plates 211, and then through the oil hole on the main shaft, through the inner spacer 2531, and the oil is injected between the inner spacer 2531 and the outer spacer 2532 for lubrication of the two bearings (the first bearing 251 and the second bearing 252).

[0032] Optionally, the bearing seat 210 in the embodiment of the present application can be a semicircular (that is, the outer peripheral connecting skirt is semi-closed) structure, and the bearing seat 210 adopts a semicircular design to facilitate the disassembly of the bearing end cover plate 211 at the end (especially the bearing end cover plate 211 near the inner wall mounting seat 230).

[0033] Optionally, the inner wall mounting seat 230 in this embodiment is a conical structure, and the small end of the conical structure is arranged corresponding to the propeller 240. The inner wall mounting seat 230 is installed inside the stirring container 100, and adopts a conical design to decompose the reverse turbulence of the impeller.

[0034] Optionally, see Figure 4 and Figure 5The stirring device 200 in this embodiment further includes a packing sleeve 260 and a friction sleeve 261. The packing sleeve 260 is sleeved on the main shaft 220 and disposed between the inner wall mounting seat 230 and the propeller 230. The friction sleeve 261 is disposed between the packing sleeve 260 and the main shaft 220. Optionally, the friction sleeve 261 in this embodiment is made of ceramic. The friction sleeve 261 is used to protect the main shaft 220 and prevent the packing sleeve 260 from directly rubbing against the main shaft 220.

[0035] The stirring device 200 in this embodiment further includes a packing gland 262, which is mounted on the inner wall mounting seat 230 and supports the packing sleeve 260. The packing gland 262 presses the packing sleeve 260 to form a seal therewith to prevent leakage of liquid in the stirring container 100. The packing gland 262 supports the packing sleeve 260, and the other end of the packing sleeve 260 rests on the propeller 240, which is fixed to the main shaft through the packing sleeve 260 and the locking head 270 at the end of the main shaft 220. The propeller 240 rotates synchronously with the main shaft 220.

[0036] The agitator in this embodiment has the following features: (1) The lateral integral structure replaces the vertical long-wheelbase agitator in the conventional technical solution to reduce the vibration during operation. Through the design of the bearing seat, main shaft and other parts, it is convenient for maintenance and lubrication, and regular disassembly and maintenance, reducing the labor intensity of workers. (2) The stirring of the propeller blades generates a vortex, which fully drives the heavy material particles at the bottom of the tank to fully merge and not scale. Compared with the original vertical stirring, the dissolution rate is greatly increased. Among them, the agitator structure in this embodiment can achieve the following technical effects: the vibration during operation is reduced from 4.1mm / sec in the conventional technical solution to about 2mm / sec, and the dissolution rate of the melt in the tank is increased by 20%.

[0037] The agitator provided in the embodiment of the present application can improve the ability of the dissolving tank to decompose and fuse residual harmful substances, which can not only save costs for the enterprise, but also requires workers to work on the ground for maintenance, and has the characteristics of simple structure and easy maintenance.

[0038] The above descriptions are only some embodiments of the present application, and do not limit the protection scope of the present application. Any equivalent device or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A stirrer, characterized in that: The stirrer comprises a stirring container and a stirring device, wherein the stirring device is fixedly connected to the side wall of the stirring container; The stirring device includes a bearing seat, a main shaft, an inner wall mounting seat and a propeller; the inner wall mounting seat and the bearing seat are respectively installed on the inner and outer sides of the side wall of the stirring container, and the main shaft passes through the bearing seat, the side wall of the stirring container and the inner wall mounting seat in sequence. One end of the main shaft close to the inner wall mounting seat is connected to the propeller, and the end of the main shaft close to the bearing seat is used to be connected to an external driving device.

2. The agitator according to claim 1, characterized in that The inner wall mounting seat is a conical structure, and the small end of the conical structure corresponds to the propeller.

3. The agitator according to claim 2, characterized in that The stirring device also includes a packing sleeve and a friction sleeve. The packing sleeve is sleeved on the main shaft and arranged between the inner wall mounting seat and the propeller. The friction sleeve is arranged between the packing sleeve and the main shaft.

4. The stirrer according to claim 3, characterized in that The friction sleeve is made of ceramic.

5. The agitator according to claim 3, characterized in that The stirring device also includes a packing gland, which is installed on the inner wall mounting seat and supports the packing sleeve.

6. The agitator according to claim 1, characterized in that The stirring device also includes a bearing, which is arranged in the bearing seat and sleeved on the main shaft.

7. The stirrer according to claim 6, characterized in that The bearing comprises a first bearing and a second bearing, and the first bearing and the second bearing are respectively arranged at two ends of the bearing seat.

8. The stirrer according to claim 7, characterized in that A spacer sleeve is provided between the first bearing and the second bearing, and the spacer sleeve is sleeved on the main shaft.

9. The agitator according to claim 1, characterized in that The bearing seat is a semicircular structure.

10. The agitator according to claim 1, characterized in that The axis of the main shaft is parallel to the horizontal plane.

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