A cleaning device for a centrifugal solid-liquid separation device

Abstract

The utility model relates to a kind of cleaning device of centrifugal solid-liquid separation device, belong to oil purification equipment technical field.It includes the scraper and one-way transmission assembly arranged in centrifugal cylinder, the middle part of scraper is located between the oil collection impeller of separation device and the inner wall of centrifugal cylinder, at least one side of scraper is provided with oil scraping part, oil scraping part is attached with the inner wall of centrifugal cylinder and can be relatively moved between the inner wall of centrifugal cylinder, one-way transmission assembly is arranged between centrifugal cylinder, oil collection impeller and scraper, and drive scraper synchronous rotation when centrifugal cylinder carries out centrifugal purification.The cleaning device of the centrifugal solid-liquid separation device of the utility model realizes the cleaning of the inner wall of centrifugal cylinder, cleaning effect is good, and structure is simple, can be directly installed on existing centrifugal solid-liquid separation device, and production cost is low.

Description

Technical Field

[0001] A cleaning device for a centrifugal solid-liquid separation apparatus belongs to the technical field of oil purification equipment. Background Technology

[0002] Oil purification machines are used to perform online purification of oils (lubricating oil, hydraulic oil, etc.) in industrial lubrication systems. They are mainly used for online bypass or offline purification of oils in industrial lubrication and hydraulic systems to improve the service life of industrial equipment, increase the recycling rate of oils, and reduce the failure rate of industrial equipment.

[0003] Chinese utility model patent CN208642978U discloses a high-flow-rate centrifugal separator, including a base, an oil inlet pipe, a central shaft, a rotating base, a cylinder, and an oil outlet pipe. The central shaft is coaxially fitted with the base, and a rotating base and a rotating frame are mounted on the central shaft. Several discs are mounted on the rotating frame. An oil collecting impeller is installed at the top of the central shaft, and an oil collecting impeller guide vane is installed on the oil collecting impeller. The cylinder encapsulates the rotating frame, the oil collecting impeller, and the oil collecting impeller guide vane. The oil inlet pipe and the oil outlet pipe are connected to the outside of the base. The height of the cylinder is 160mm. The beneficial effects of this utility model are: reducing the height of the centrifuge cylinder from 220mm to about 160mm, while increasing the height of the oil collecting impeller guide vane from 2mm to 4mm, increasing the oil discharge space of the oil collecting impeller, increasing the oil discharge capacity of the oil collecting impeller, and significantly improving the purification flow rate of the oil purifier. This solves the problems of low purification flow rate and low purification efficiency of centrifugal oil filters, and meets the usage requirements in various environments.

[0004] The above-mentioned separation device has the following problems during use: when purifying oil, impurities in the oil will adhere to the inner wall of the cylinder. After a period of use, the inner wall of the cylinder needs to be cleaned to ensure its continuous and stable operation.

[0005] Chinese invention patent application CN114308404A discloses a centrifugal solid-liquid separation and sludge removal oil purification device and its usage method. It utilizes a sludge discharge plate to discharge sludge from the receiving cylinder into a discharge pipe. This facilitates the removal of impurities accumulated on the inner wall of the receiving cylinder when a certain amount is reached, preventing excessive impurities from affecting the oil purification effect and resulting in impurities remaining in the purified oil. Furthermore, the device can discharge sludge during operation, saving cleaning time and ensuring normal production. A limiting rod can limit the sludge discharge plate, helping to maintain its stability during centrifugation, ensuring normal sludge discharge, and preventing the sludge discharge plate from flipping under the influence of the oil during centrifugation. While this solves the problem of impurities adhering to the inner wall of the cylinder and requiring frequent cleaning, the inventors discovered the following technical problem during use: when purifying oil, impurities in the oil adhere to the inner wall of the receiving cylinder.

[0006] Furthermore, this type of equipment has a complex structure and high production costs. Also, because the receiving cylinder needs to rotate at high speed during operation, the overly complex structure can easily cause the equipment to shake. In addition, the sewage discharge effect during operation is poor, making it difficult to meet sewage discharge requirements. Utility Model Content

[0007] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a cleaning device for a centrifugal solid-liquid separation device that can clean the inner wall of the centrifuge without disassembly, with good cleaning effect and convenient operation.

[0008] The technical solution adopted by this utility model to solve its technical problem is as follows: the cleaning device of the centrifugal solid-liquid separation device includes a scraper and a one-way transmission assembly disposed inside the centrifuge drum. The middle part of the scraper is located between the oil collecting impeller of the separation device and the inner wall of the centrifuge drum. At least one side of the scraper is provided with an oil scraping part. The oil scraping part is attached to the inner wall of the centrifuge drum and can move relative to the inner wall of the centrifuge drum. The one-way transmission assembly is disposed between the centrifuge drum, the oil collecting impeller and the scraper, and drives the scraper to rotate synchronously when the centrifuge drum is centrifuged and purified.

[0009] Furthermore, oil scraping sections are symmetrically arranged on both sides of the scraper.

[0010] Furthermore, the scraper includes a scraper body and a disc body. The disc body is located between the oil collecting impeller and the inner wall of the centrifuge cylinder. One end of the scraper body is fixedly connected to the disc body, and the oil scraping part is formed on the side of the disc body.

[0011] Furthermore, the unidirectional transmission assembly includes a receiving groove disposed on the inner wall of the centrifuge cylinder, an elastic plate disposed on the scraper, and a pushing part disposed on the oil collecting impeller. The middle part of the elastic plate protrudes towards the receiving groove, one end of the elastic plate is fixedly connected to the scraper, and the other end extends into one side of the pushing part. There is a gap between the free end of the elastic plate and the receiving groove.

[0012] Furthermore, the oil collecting impeller is provided with a clearance groove, and the pushing part is located at one end of the clearance groove near the free end of the elastic plate.

[0013] Furthermore, several of the unidirectional transmission components are arranged around the oil collecting impeller.

[0014] Compared with the prior art, the beneficial effects of this utility model are: When the cleaning device of this centrifugal solid-liquid separator is in use, the centrifuge drum rotates at high speed and purifies the oil. At this time, the one-way transmission component causes the scraper to rotate synchronously with the centrifuge drum. The scraper is buried in the impurities on the inner wall of the centrifuge drum. When cleaning is required, the centrifuge drum stops and rotates in the reverse direction. The one-way transmission component fixes the scraper and the oil collecting impeller relative to each other and keeps them stationary. At this time, the centrifuge drum rotates relative to the scraper. During the reverse rotation of the centrifuge drum, the scraper scrapes off the impurities on the inner wall of the centrifuge drum, thus cleaning the inner wall of the centrifuge drum. The cleaning effect is good, and the structure is simple. It can be directly installed on existing centrifugal solid-liquid separators, and the production cost is low. Attached Figure Description

[0015] Figure 1 This is a front sectional view of the cleaning device of a centrifugal solid-liquid separation unit. Figure 2 for Figure 1 A magnified view of a section at point A in the middle; Figure 3 This is a top view of the scraper. Figure 4 This is a schematic diagram showing the assembly of the scraper, oil collecting impeller, and centrifuge cylinder.

[0016] In the diagram: 1. Centrifuge cylinder; 101. Receiving tank; 2. Scraper; 201. Scraper body; 202. Disc; 203. Elastic plate; 3. Oil collecting impeller; 301. Clearance groove; 302. Pushing part. Detailed Implementation

[0017] Figures 1-4 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-4 The present invention will be further described below.

[0018] The present invention will be further described below with reference to specific embodiments. However, those skilled in the art should understand that the detailed description given here with reference to the accompanying drawings is for better explanation. The structure of the present invention may exceed the limited embodiments described herein. Some equivalent alternatives or common means will not be described in detail here, but they still fall within the protection scope of this application.

[0019] A cleaning device for a centrifugal solid-liquid separation device includes a scraper 2 and a one-way transmission assembly disposed inside a centrifuge cylinder 1. The middle part of the scraper 2 is located between the oil collecting impeller 3 of the separation device and the inner wall of the centrifuge cylinder 1. At least one side of the scraper 2 is provided with an oil scraping part, which is attached to the inner wall of the centrifuge cylinder 1 and can move relative to the inner wall of the centrifuge cylinder 1. The one-way transmission assembly is disposed between the centrifuge cylinder 1, the oil collecting impeller 3 and the scraper 2, and drives the scraper 2 to rotate synchronously when the centrifuge cylinder 1 is centrifuged and purified. When the cleaning device of this centrifugal solid-liquid separation device is in use, the centrifuge cylinder 1 is rotating at high speed and purifying the oil. At this time, the one-way transmission component causes the scraper 2 to rotate synchronously with the centrifuge cylinder 1. The scraper 2 will be buried in the impurities on the inner wall of the centrifuge cylinder 1. When it is necessary to clean the centrifuge cylinder 1, the centrifuge cylinder 1 stops and rotates in the reverse direction. The one-way transmission component fixes the scraper 2 and the oil collecting impeller 3 relative to each other and keeps them stationary. At this time, the centrifuge cylinder 1 rotates relative to the scraper 2. During the reverse rotation of the centrifuge cylinder 1, the scraper 2 scrapes off the impurities on the inner wall of the centrifuge cylinder 1, thus cleaning the inner wall of the centrifuge cylinder 1. The cleaning effect is good, and the structure is simple. It can be directly installed on existing centrifugal solid-liquid separation devices, and the production cost is low.

[0020] Specifically, such as Figure 1-3 As shown, a downward-facing mounting cavity is provided at the top of the centrifuge cylinder 1, and the bottom of the centrifuge cylinder 1 is open. The upper part of the oil collecting impeller 3 is located in the mounting cavity, and the lower part of the oil collecting impeller 3 extends into the central shaft of the centrifugal solid-liquid separation device and is fixed to the central shaft. During operation, the centrifuge cylinder 1 rotates at high speed, while the oil collecting impeller 3 remains stationary.

[0021] The scraper 2 includes a disc 202 and a scraper body 201. The disc 202 is disc-shaped and is located within the mounting cavity. In this embodiment, the disc 202 is located between the oil collecting impeller 3 and the bottom of the mounting cavity. The scraper body 201 is located on the side of the disc 202. The upper end of the scraper body 201 is integrally connected to the corresponding side of the disc 202 and rotates synchronously with the disc 202, forming an oil scraping section on one side of the disc 202. In this embodiment, the scraper body 201 is made of stainless steel. When installed inside the centrifuge cylinder 1, the scraper body 201 presses against the inner wall of the centrifuge cylinder 1 with elasticity, thereby enabling more thorough cleaning of the inner wall of the centrifuge cylinder 1 when rotating relative to it. In this embodiment, the oil scraping section presses against the inner wall of the centrifuge cylinder 1.

[0022] During operation, the centrifuge drum 1 rotates at high speed, and the scraper 2 rotates synchronously with it. To ensure greater stability of the centrifuge drum 1 during rotation and to ensure that the scraper body 201 better presses against the inner wall of the centrifuge drum 1, the scraper body 201 has two symmetrically arranged pieces on both sides of the disc body 202. Since both scraper bodies 201 press against the inner wall of the centrifuge drum 1, the pressing between the two scraper bodies 201 and the centrifuge drum 1 is more reliable. In addition, it also ensures that the weight distribution of the scraper 2 is uniform, ensuring greater stability when the centrifuge drum 1 rotates at high speed.

[0023] like Figure 4 As shown, a one-way transmission assembly is positioned between the disc 202 and the centrifuge cylinder 1 and the oil collecting impeller 3. When the centrifuge cylinder 1 is working and purifying the oil, the scraper 2 rotates synchronously with the centrifuge cylinder 1 under the action of the one-way transmission assembly. When it is necessary to clean the inner wall of the centrifuge cylinder 1, it is only necessary to rotate the centrifuge cylinder 1 in the opposite direction. At this time, the one-way transmission assembly keeps the scraper 2 and the oil collecting impeller 3 relatively stationary, and the centrifuge cylinder 1 and the scraper 2 rotate relative to each other, thereby achieving the cleaning of the inner wall of the centrifuge cylinder 1. In this embodiment, six one-way transmission assemblies are evenly distributed to ensure uniform weight distribution of the disc 202.

[0024] Several unidirectional drive components are evenly distributed around the disc 202, thereby ensuring that the scraper 2 works more stably.

[0025] The one-way transmission assembly includes a receiving groove 101 disposed on the inner wall of the mounting cavity, an elastic plate 203 disposed on the side of the disc body 202, and a pushing part 302 disposed on the upper end face of the oil collecting impeller 3. The receiving groove 101, elastic plate 203, and pushing part 302 of each one-way transmission assembly are all configured to cooperate with each other. The elastic plate 203 is located between the receiving groove 101 and the pushing part 302. By cooperating with the receiving groove 101 and the pushing part 302, the scraper 2 can be made to rotate synchronously with the centrifuge cylinder 1 during normal operation, and the scraper 2 can be fixed relative to the oil collecting impeller 3 during reverse rotation.

[0026] The receiving groove 101 is a V-shaped groove with the opening facing downwards. In this embodiment, the length of the left side of the receiving groove 101 is less than the length of the right side, so that the angle between the left side of the receiving groove 101 and the vertical plane is less than the angle between the right side and the vertical plane.

[0027] A clearance groove 301 is provided on the upper end face of the oil collecting impeller 3. The clearance groove 301 is a V-shape with the opening facing upwards, and a pushing part 302 is formed on the right side of the clearance groove 301. The angle between the pushing part 302 and the vertical plane is smaller than the angle between the other side of the clearance groove 301 and the vertical plane.

[0028] The elastic plate 203 is located between the relief groove 301 and the receiving groove 101. The elastic plate 203 is V-shaped with its opening facing downwards. The left end of the elastic plate 203 is integrally connected to the disc body 202, and the other end is inclined downwards and extends into the relief groove 301. In this embodiment, the left side of the elastic plate 203 is attached to the left side of the receiving groove 101, and the right side of the elastic plate 203 is spaced apart from the right side of the receiving groove 101.

[0029] When the centrifuge cylinder 1 rotates at high speed and performs solid-liquid separation, the centrifuge cylinder 1 drives the elastic plate 203 to move away from the pushing part 302. Since the elastic plate 203 is located in the receiving groove 101, the centrifuge cylinder 1 drives the elastic plate 203 to move through the receiving groove 101, and then drives the scraper body 201 to move through the disc 202. When the free end of the elastic plate 203 contacts the left side of the relief groove 301, the relief groove 301 will cause the elastic plate 203 to move upward, avoiding mutual interference between the elastic plate 203 and the oil collecting impeller 3.

[0030] When the inner wall of the centrifuge cylinder 1 needs to be cleaned, the centrifuge cylinder 1 rotates in the reverse direction. Since the free end of the elastic plate 203 extends into the relief groove 301, the free end of the elastic plate 203 will be supported on the pushing part 302 in the relief groove 301 during rotation, so that the elastic plate 203 and the oil collecting impeller 3 are relatively fixed. The left side of the receiving groove 101 is inclined, which allows the elastic plate 203 to undergo elastic deformation and enter the relief groove 301, so as not to hinder the rotation of the centrifuge cylinder 1.

[0031] It should be noted that the appendix Figure 4 The diagram provided only illustrates the relative positions and working principles of the receiving groove 101, the clearance groove 301, and the elastic plate 203, and does not represent their relative dimensions.

[0032] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A cleaning device for a centrifugal solid-liquid separation apparatus, characterized in that: It includes a scraper (2) and a one-way transmission assembly installed inside the centrifuge cylinder (1). The middle part of the scraper (2) is located between the oil collecting impeller (3) of the separation device and the inner wall of the centrifuge cylinder (1). At least one side of the scraper (2) is provided with an oil scraping part. The oil scraping part is attached to the inner wall of the centrifuge cylinder (1) and can move relative to the inner wall of the centrifuge cylinder (1). The one-way transmission assembly is installed between the centrifuge cylinder (1), the oil collecting impeller (3) and the scraper (2), and drives the scraper (2) to rotate synchronously when the centrifuge cylinder (1) is centrifuged and purified.

2. The cleaning device of the centrifugal solid-liquid separation device according to claim 1, characterized in that: Oil scraping sections are symmetrically arranged on both sides of the scraper (2).

3. The cleaning device of the centrifugal solid-liquid separation device according to claim 1 or 2, characterized in that: The scraper (2) includes a scraper body (201) and a disc (202). The disc (202) is located between the oil collecting impeller (3) and the inner wall of the centrifuge cylinder (1). One end of the scraper body (201) is fixedly connected to the disc (202), and the scraping part is formed on the side of the disc (202).

4. The cleaning device of the centrifugal solid-liquid separation device according to claim 1, characterized in that: The unidirectional transmission assembly includes a receiving groove (101) disposed on the inner wall of the centrifuge cylinder (1), an elastic plate (203) disposed on the scraper (2), and a pushing part (302) disposed on the oil collecting impeller (3). The middle part of the elastic plate (203) protrudes towards the receiving groove (101), one end of the elastic plate (203) is fixedly connected to the scraper (2), and the other end extends into one side of the pushing part (302). There is a gap between the free end of the elastic plate (203) and the receiving groove (101).

5. The cleaning device of the centrifugal solid-liquid separation device according to claim 4, characterized in that: The oil collecting impeller (3) is provided with a relief groove (301), and the pushing part (302) is provided at one end of the relief groove (301) near the free end of the elastic plate (203).

6. The cleaning device of the centrifugal solid-liquid separation device according to claim 1 or 4, characterized in that: The unidirectional transmission assembly is provided in several units around the oil collecting impeller (3).

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