Flushing structure for spiral inner cavity of horizontal spiral centrifuge
By installing a flushing pipe outside the feed pipe of the decanter centrifuge, the inner cavity of the spiral can be cleaned online, solving the problem of material adhesion residue and ensuring the cleanliness requirements of the equipment in the food and pharmaceutical industries.
Patent Information
- Application Number
- CN202422382595.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-09-27
AI Technical Summary
When the decanter centrifuge is working, the material entering the spiral cavity is prone to sticking and leaving residue, leading to dynamic balance problems. This is especially true in the food and pharmaceutical industries, which have high requirements for cleanliness and are difficult to clean online with existing technology.
A flushing structure for the spiral inner cavity of a horizontal screw centrifuge is designed. A flushing pipe is arranged outside the feed pipe, and the spiral inner cavity is cleaned by utilizing the flushing cavity and the flushing outlet to achieve online cleaning.
It effectively prevents materials from sticking and remaining in the spiral cavity, ensures the dynamic balance of the equipment, and is suitable for the high cleanliness requirements of the food and pharmaceutical industries.
Smart Images
Figure CN223337543U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of centrifuges, in particular to a flushing structure for a spiral inner cavity of a horizontal screw centrifuge. Background Art
[0002] The decanter centrifuge consists of a drum, a feed pipe extending into the drum, and a differential connecting the drum and the feed pipe. When the decanter centrifuge is used in industries such as food, pharmaceuticals, biotechnology and fine chemicals, very high requirements are placed on the hygiene standards and cleaning of the equipment.
[0003] During operation, the decanter centrifuge continuously feeds the spiral feed chamber of the centrifuge through the feed pipe. The decanter centrifuge realizes the process of continuous separation and pushing. During the continuous feeding-discharging process, the material will enter the spiral cavity of the decanter centrifuge and some solids will remain inside. It cannot be cleaned online, which affects the dynamic balance of the decanter centrifuge. This is especially critical in industries such as food and medicine that have high requirements for the cleanliness of the material separation environment. Therefore, it is necessary to make improvements. Utility Model Content
[0004] In order to solve the above problems in the prior art, the utility model provides a flushing structure for the spiral inner cavity of a horizontal screw centrifuge, which has a simple structure and strong practicality.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] As one aspect of the present invention, a flushing structure for a spiral inner cavity of a horizontal screw centrifuge is proposed, comprising: a horizontal screw centrifuge body, wherein the horizontal screw centrifuge body comprises a frame, a rotating drum, a feed pipe, and a spiral barrel shaft, wherein the spiral barrel shaft has a spiral inner cavity and a spiral feed cavity; the spiral inner cavity is located on the side of the spiral feed cavity, and the spiral inner cavity and the spiral feed cavity are connected by a connecting hole; the rotating drum and the spiral barrel shaft are mounted on the frame via bearings, and the spiral barrel shaft is located in the rotating drum; the spiral barrel shaft is coaxially arranged with the rotating drum; one end of the feed pipe sequentially passes through the spiral inner cavity and the connecting hole of the spiral barrel shaft and extends into the spiral feed cavity of the spiral barrel shaft, and a material outlet is provided on the spiral feed cavity;
[0007] It also includes a flushing pipe, which is sleeved on the feed pipe, and the end of the flushing pipe is connected to the end of the feed pipe, and a flushing cavity is formed between the flushing pipe and the feed pipe;
[0008] The flushing pipe in the spiral inner cavity is provided with more than one flushing outlet, and the flushing pipe is provided with a flushing inlet away from the spiral feed cavity. The flushing outlet and the flushing inlet are respectively connected to the flushing cavity; the spiral inner cavity is provided with a spiral flushing outlet.
[0009] Optionally, the diameter of the flushing pipe is larger than the diameter of the feeding pipe.
[0010] Optionally, a retaining ring is provided on the flushing pipe.
[0011] Optionally, the flushing pipe is coaxially arranged with the feeding pipe.
[0012] Optionally, the end of the flushing pipe is connected to the end of the feeding pipe via a seal.
[0013] Optionally, the feed pipe is coaxially arranged with the spiral barrel axis.
[0014] The beneficial effects of the flushing structure of the spiral inner cavity of the horizontal screw centrifuge of the present invention are specifically embodied in that: the material enters the spiral feeding cavity through the feed pipe, the cleaning liquid is passed into the flushing cavity, the cleaning liquid is led to the spiral inner cavity from the flushing outlet, and the inner wall of the spiral inner cavity is flushed, thereby realizing the flushing operation of the spiral inner cavity; it avoids the solid adhesion and residue inside the spiral inner cavity after the material enters the spiral inner cavity, and the inability to perform online cleaning affects the dynamic balance of the equipment. The utility model is particularly suitable for industries such as food and medicine that have high requirements for the cleanliness of the material separation environment. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The drawings in the specification, which constitute a part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.
[0016] Figure 1 This is a schematic structural diagram of the flushing structure of the spiral inner cavity of the horizontal screw centrifuge of the present invention. DETAILED DESCRIPTION
[0017] To make the objectives, technical solutions, and advantages of the present invention more clearly apparent, the following will provide a clear and complete description of the technical solutions of the present invention in conjunction with specific embodiments of the present invention and the corresponding drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.
[0018] A flushing structure for the spiral inner cavity of a decanter centrifuge according to an embodiment of the present application is as follows: Figure 1As shown, it includes: a horizontal screw centrifuge body, the horizontal screw centrifuge body includes a frame, a drum 2, a feed pipe 3, a spiral barrel shaft 4 and a driving mechanism, the spiral barrel shaft 4 is hollow, and has a spiral inner cavity 43 and a spiral feed cavity 41 therein; the spiral inner cavity 43 and the spiral feed cavity 41 are connected through a connecting hole 44; the spiral inner cavity 43 is the tapered portion of the spiral barrel shaft 4; when feeding, because the feed pipe 3 is to extend into the spiral feed cavity 41, it must pass through the spiral inner cavity 43 and through the connecting hole 44. The through hole 44 is located at the matching position between the feed pipe 3 and the spiral feed chamber 41, and inside the spiral barrel shaft 4, the matching between the connecting hole 44 and the feed pipe 3 cannot be completely sealed, and when the seals of the two need to be maintained, maintenance is difficult. Therefore, during the high-speed rotation of the spiral feed chamber 41, some materials will enter the spiral inner cavity 43 from the connecting hole 44, so the spiral inner cavity 43 needs to be cleaned; if the spiral inner cavity 43 is made into a solid shape, it will affect the dynamic balance of the entire spiral barrel shaft 4;
[0019] The drum 2 and the spiral drum shaft 4 are mounted on the frame through bearings, and the spiral drum shaft 4 is located in the drum 2; the spiral drum shaft 4 is coaxially arranged with the drum 2; one end of the feed pipe 3 sequentially passes through the spiral inner cavity 43 and the communicating hole 44 of the spiral drum shaft 4 and extends into the spiral feeding cavity 41 of the spiral drum shaft 4, the feed pipe 3 is coaxially arranged with the spiral drum shaft 4, and the spiral feeding cavity 41 is provided with a material outlet 42, and the other end of the feed pipe 3 extends to the outside of the drum 2 as the material inlet; the driving mechanism is mounted on the frame, and the driving mechanism drives the drum 2 and the spiral drum shaft 4 to rotate respectively through the differential. It should be noted that the structure of the horizontal screw centrifuge body is prior art and will not be described in detail here;
[0020] The material further comprises a flushing pipe 5, the diameter of which is larger than that of the feed pipe 3; the flushing pipe 5 is sleeved on the feed pipe 3, and the flushing pipe 5 and the feed pipe 3 are coaxially arranged; the end of the flushing pipe 5 is connected to the end of the feed pipe 3 by a sealing member 6, and a flushing cavity is formed between the flushing pipe 5 and the feed pipe 3;
[0021] The flushing pipe 5 located in the spiral inner cavity 43 is provided with one or more flushing outlets 51. The flushing pipe 5 is provided with a flushing inlet 52 away from the spiral feeding cavity 41. The flushing outlet 51 and the flushing inlet 52 are respectively connected to the flushing cavity; the spiral inner cavity 43 is provided with a spiral flushing outlet 431;
[0022] The material enters the spiral feeding chamber 41 through the feed pipe 3, and the cleaning liquid passes through the flushing chamber. The cleaning liquid flows into the spiral inner chamber 43 through the flushing outlet 51, flushes the inner wall of the spiral inner chamber 43, and then enters the separation area of the centrifuge through the spiral flushing outlet 431, and is finally discharged with the solid-liquid separation product, thereby realizing the flushing operation of the spiral inner chamber.
[0023] In one embodiment, a retaining ring 53 is provided on the flushing pipe 5, and the flushing pipe 5 forms a barrier with the spiral barrel shaft 4 through the retaining ring 53 to prevent the material from directly returning from the spiral feed chamber 41 to the spiral inner chamber 43. The size of the retaining ring 53 is smaller than the size of the connecting hole 44, so that the discharge end of the feed pipe 3 enters the spiral feed chamber 41.
[0024] This method avoids the situation where solids remain inside the spiral cavity after the material enters it, making it impossible to clean it online and affecting the dynamic balance of the equipment. It is particularly suitable for industries such as food and medicine that have high requirements for the cleanliness of the material separation environment.
[0025] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.
[0026] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.
[0027] In the description of this application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.
[0028] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.
[0029] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.
[0030] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc. should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model in specific circumstances.
[0031] The above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of the present invention.
Claims
1. A flushing structure for the spiral cavity of a horizontal screw centrifuge, characterized in that: It includes: The decanter centrifuge body includes a frame, a rotating drum, a feed pipe and a spiral barrel shaft. The spiral barrel shaft has a spiral inner cavity and a spiral feed cavity. The spiral inner cavity is located on the side of the spiral feed cavity, and the connecting hole between the spiral inner cavity and the spiral feed cavity is connected. The rotating drum and the spiral barrel shaft are mounted on the frame through bearings, and the spiral barrel shaft is located in the rotating drum. The spiral barrel shaft and the rotating drum are coaxially arranged. One end of the feed pipe passes through the spiral inner cavity and the connecting hole of the spiral barrel shaft in sequence and extends into the spiral feed cavity of the spiral barrel shaft. The spiral feed cavity is provided with a material outlet. It also includes a flushing pipe, which is sleeved on the feed pipe, and the end of the flushing pipe is connected to the end of the feed pipe, and a flushing cavity is formed between the flushing pipe and the feed pipe; The flushing pipe in the spiral inner cavity is provided with more than one flushing outlet, and the flushing pipe is provided with a flushing inlet away from the spiral feed cavity. The flushing outlet and the flushing inlet are respectively connected to the flushing cavity; the spiral inner cavity is provided with a spiral flushing outlet.
2. The flushing structure of the spiral inner cavity of the decanter centrifuge according to claim 1, characterized in that: The diameter of the flushing pipe is larger than the diameter of the feeding pipe.
3. The flushing structure of the spiral inner cavity of the decanter centrifuge according to claim 1, characterized in that: A retaining ring is provided on the flushing pipe.
4. The flushing structure of the spiral inner cavity of the decanter centrifuge according to claim 1, characterized in that: The flushing pipe is coaxially arranged with the feeding pipe.
5. The flushing structure of the spiral inner cavity of the decanter centrifuge according to claim 1, characterized in that: The end of the flushing pipe is connected to the end of the feeding pipe via a sealing member.
6. The flushing structure of the spiral inner cavity of the decanter centrifuge according to claim 1, characterized in that: The feed pipe is coaxially arranged with the spiral cylinder shaft.