Solid-liquid separation device

Abstract

The application discloses a solid-liquid separation device, which comprises a rotating drum, an opening and closing device, a scraper device, a bottom cover, and a driving component for driving the rotating drum to rotate, wherein the bottom of the rotating drum is provided with a discharge port; the opening and closing device is used for driving the bottom cover to rotate, so as to close or open the discharge port; the scraper device is arranged outside the rotating drum and can be extended into or drawn out of the rotating drum from the discharge port, and is used for scraping impurities in the rotating drum. The scraper device of the application is arranged outside the rotating drum, can be extended into the rotating drum to scrape impurities in the rotating drum when the scraping is needed, and can be moved out of the rotating drum after the scraping is completed, so that the scraper is prevented from being always arranged in the rotating drum and from being in contact with the rotating drum during the working of the rotating drum, and meanwhile, the scraper device is convenient to replace or maintain.

Description

Technical Field

[0001] This application relates to the field of solid-liquid separation technology, specifically to a solid-liquid separation device. Background Technology

[0002] A solid-liquid separation device is a device that uses centrifugal force to separate solids from liquids. Its core principle is that the centrifugal force generated by high-speed rotation separates denser solid particles from the mixture. When the mixture enters the rotating drum, the centrifugal force generated by the high-speed rotation causes the solid particles to move towards the inner wall of the drum, forming a filter cake layer, while the liquid flows out through the filter screen or filter cloth, thus achieving separation.

[0003] In order to remove impurities (filter cake layer) from the inner wall of the drum, existing separation devices (such as centrifuges with publication numbers CN108311294A and CN209697188U) usually require a scraper to be installed inside the drum. The scraper is driven by a drive device to move up and down inside the drum to remove impurities. However, the scraper is usually located inside the drum. When the drum rotates at high speed, the scraper may have a rigid collision with the drum due to vibration, deformation or control system failure, which may lead to drum wear, scraper deformation or even breakage. Utility Model Content

[0004] To address the aforementioned technical problems, this application provides a solid-liquid separation device in which the scraper is arranged outside the rotating drum, so that the scraper will not affect the rotating drum during operation. The following technical solution is adopted:

[0005] A solid-liquid separation device includes a rotating drum and a bottom cover, as well as a drive component for driving the rotating drum to rotate, wherein a discharge port is provided at the bottom of the rotating drum;

[0006] An opening and closing device is used to drive the bottom cover to rotate, thereby closing or opening the discharge port;

[0007] A scraper device is provided on the outside of the drum and can extend into or out of the drum from the discharge port to scrape off impurities inside the drum.

[0008] Preferably, it also includes a drive device for cooperating with the scraper device to scrape away impurities inside the drum.

[0009] More preferably, the drive device includes a power component and a switching component, the switching component being used to connect or disconnect the power transmission between the power component and the drum.

[0010] More preferably, the switching assembly includes a second power component, a first gear and a second gear, and a switching gear rotatably connected to the second power component. The first gear and the second gear are respectively disposed on the first power component and the drum. The second power component is used to drive the switching gear to engage or disengage with the first gear and the second gear.

[0011] Preferably, the scraper device includes a scraper and a power component three, the power component three being used to drive the scraper to rotate, and the scraping end of the scraper being able to extend into or withdraw from the rotating drum from the discharge port.

[0012] More preferably, the scraper end is adapted to the internal contour of the drum.

[0013] Preferably, it also includes a transfer water tank, which is connected to the bottom cover.

[0014] More preferably, it also includes a mounting plate, on which the drive component, the drum, the drive device, the scraper device, and the opening and closing device are all integrated.

[0015] Compared with the prior art, the beneficial effects of this application are as follows:

[0016] The scraper device of this application is located outside the drum. When it is necessary to scrape off impurities inside the drum, it can extend into the drum to scrape them off. After scraping is completed, it will move out of the drum, thereby preventing the scraper from being inside the drum and preventing the scraper from contacting the drum during operation.

[0017] It is equipped with an independent drive unit to work with the scraper device to achieve low-speed scraping, thereby reducing the wear of the scraper device, extending its service life, and reducing energy consumption. Attached Figure Description

[0018] Figure 1 This is a front view of this application;

[0019] Figure 2 This is a top view of this application.

[0020] In the picture:

[0021] 00. Mounting plate; 10. Drum; 20. Drive components;

[0022] 30. Scraper device; 310. Power component three; 320. Scraper; 3200. Scraper end;

[0023] 40. Drive unit; 410. Power component one; 420. Switching assembly; 4201. Power component two; 4202. Switching gear; 4203. Gear one; 4204. Gear two.

[0024] 50. Opening and closing device; 60. Bottom cover; 70. Transfer water tank. Detailed Implementation

[0025] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described in this application are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0026] See Figures 1 to 2 To further elaborate on this application:

[0027] Combination Figure 1 A solid-liquid separation device includes a rotating drum 10, a bottom cover 60, an opening and closing device 50, a driving component 20, and a scraper device 30. The bottom of the rotating drum 10 is provided with a discharge port. The opening and closing device 50 is used to drive the bottom cover 60 to rotate and close or open the discharge port. The bottom cover 60 may be rotatably connected to the rotating drum 10 on one side. The rotating drum 10 may adopt a double-layer structure as in the prior art.

[0028] The driving component 20 is used to drive the drum 10 to rotate at high speed; wherein, the driving component 20 is connected to the rotation; in this embodiment, the driving component 20 and the drum 10 are driven by a belt drive, and the driving component 20 can be a motor.

[0029] The scraper device 30 is located outside the drum 10 and can extend into or out of the drum 10 from the discharge port to scrape off impurities (filter cake layer) inside the drum 10.

[0030] Compared to the prior art where the scraper is located inside the rotating drum 10, this application places the scraper 320 outside the rotating drum 10. When it is necessary to scrape off impurities inside the rotating drum 10, the scraper device 30 can extend into the rotating drum 10 to scrape. After scraping, the scraper device 30 will move out of the rotating drum 10. Therefore, the scraper device 30 will not always be inside the rotating drum 10, thereby avoiding contact between the rotating drum 10 and the scraper 320 during operation. At the same time, it is convenient to replace or repair the scraper device 30.

[0031] In this embodiment, a driving device 40 is also provided on one side of the rotating drum 10. The driving device 40 is used to cooperate with the scraper device 30 to scrape away impurities inside the rotating drum 10. It can drive the rotating drum 10 at low speed to cooperate with the scraper device 30 to scrape away impurities inside the rotating drum 10. At low speed, the binding force between impurities and the rotating drum 10 is weak, the resistance of the scraper 320 is small, which can reduce the wear of the scraper device 30, extend its service life, and reduce energy consumption.

[0032] Combination Figure 2 The drive device 40 includes a power component 410 and a switching assembly 420. The switching assembly 420 is used to connect or disconnect the power transmission between the power component 410 and the drum 10. The power component 410 may be a geared motor. The switching assembly 420 includes a second power component 4201, a first gear 4203 and a second gear 4204, and a switching gear 4202 rotatably connected to the second power component 4201. The second power component 4201 may be a switching cylinder. The first gear 4203 and the second gear 4204 are respectively located on the drive end of the geared motor and the drum 10. The switching cylinder is used to drive the switching gear 4202 to mesh or disengage from the first gear 4203 and the second gear 4204.

[0033] When it is necessary to separate the mixture, the reduction motor stops working, and the switching cylinder drives the switching gear 4202 to separate from the gear one 4203 and the gear two 4204. The driving component 20 drives the drum 10 to rotate at high speed to separate the mixture inside. At this time, the separated liquid will be separated and collected in the bottom cover 60, while the solid particles will adhere to the inner side wall of the drum 10.

[0034] When the separation is complete and it is necessary to scrape off the impurities on the inner wall of the drum 10, the drive component 20 stops working. The switching cylinder drives the switching gear 4202 to mesh with the first gear 4203 and the second gear 4204. The reduction motor drives the drum 10 to rotate at low speed through the first gear 4203, the switching gear 4202 and the second gear 4204. The opening and closing device 50 drives the bottom cover 60 to rotate and open the discharge port. The scraper device 30 extends into the drum 10 to scrape off the impurities on its inner wall and discharge them through the discharge port.

[0035] In this embodiment, the scraper device 30 includes a scraper 320 and a power component 310, which can be a cylinder. The power component 310 drives the scraper 320 to rotate, and the scraping end 3200 of the scraper 320 can extend into or out of the drum 10 from the discharge port. The scraper 320 can be rotatably connected to an external bracket (not shown), and of course, the scraper 320 can be rotatably connected to the drum 10.

[0036] In this embodiment, the scraper end 3200 is adapted to the internal contour of the drum 10. This allows for the removal of impurities from the drum 10 in a single pass, resulting in high scraping efficiency. Compared to existing technologies, this application eliminates the need to drive the scraper 320 to move within the drum 10.

[0037] In some embodiments, a transfer tank 70 is also included, which is connected to the bottom cover 60. The liquid separated in the bottom cover 60 enters the transfer tank 70 for sedimentation, further reducing solid impurities in the liquid.

[0038] In this embodiment, a mounting plate 00 is also included. The driving component 20, the drum 10, the driving device 40, the scraper device 30, and the opening and closing device 50 are all integrated on the mounting plate 00, thereby reducing the overall volume.

Claims

1. A solid-liquid separation device, characterized in that: It includes a rotating drum and a bottom cover, as well as a drive component for driving the rotating drum to rotate, and the bottom of the rotating drum is provided with a discharge port; An opening and closing device is used to drive the bottom cover to rotate, thereby closing or opening the discharge port; A scraper device is provided on the outside of the drum and can extend into or out of the drum from the discharge port to scrape off impurities inside the drum. It also includes a drive unit, which is used to work with the scraper device to scrape away impurities inside the drum; The drive device includes a power component and a switching component, the switching component being used to connect or disconnect the power transmission between the power component and the drum. The switching assembly includes a second power component, a first gear and a second gear, and a switching gear rotatably connected to the second power component. The first gear and the second gear are respectively mounted on the first power component and the drum. The second power component is used to drive the switching gear to engage or disengage with the first gear and the second gear.

2. The solid-liquid separation device according to claim 1, characterized in that: The scraper device includes a scraper and a power component three. The power component three is used to drive the scraper to rotate, and the scraping end of the scraper can extend into or out of the drum from the discharge port.

3. The solid-liquid separation device according to claim 2, characterized in that: The scraper end is adapted to the internal contour of the drum.

4. The solid-liquid separation device according to claim 1, characterized in that: It also includes a transfer water tank, which is connected to the bottom cover.

5. The solid-liquid separation device according to claim 1, characterized in that: It also includes a mounting plate, on which the drive component, the drum, the drive device, the scraper device, and the opening and closing device are all integrated.

Images