A cleaning device in a sedimentation filter centrifuge

Abstract

The utility model discloses a cleaning device in a sedimentation filter centrifuge, comprising: a filter spiral and a filter drum in which the filter spiral is covered, a cleaning cylinder is arranged on the outer side of the filter drum end cover of the filter drum, the side wall of the cleaning cylinder is provided with at least two plunger cavities opening outward along the circumferential direction, a reset spring, a plunger and a plug are arranged in the plunger cavity, the two ends of the reset spring are respectively against the plunger and the bottom wall of the plunger cavity, a through liquid outlet hole is arranged on the inner and outer side walls of the plunger cavity, a cleaning liquid through hole is arranged on the inner side wall of the plunger cavity, and an annular liquid outlet groove is arranged on the plunger; a filter drum shaft is arranged on the filter drum end cover, a mechanical seal is arranged on the filter drum shaft, a cleaning liquid inlet is arranged in the mechanical seal, and a cleaning liquid channel is arranged in the filter drum shaft, the filter drum end cover, and the cylinder wall of the cleaning cylinder. The cleaning device described in the utility model is particularly suitable for being installed in a sedimentation filter centrifuge.

Description

Technical Field

[0001] The utility model relates to a sedimentation filtering centrifuge, in particular to a cleaning device in the sedimentation filtering centrifuge. Background Art

[0002] At present, the conventional sedimentation filter centrifuge does not have a device for backwashing the filter screen. After a period of use, the filter drum needs to be disassembled to replace the new filter screen. In actual use, since disassembling and assembling the filter drum is quite time-consuming and labor-intensive, it affects normal production on the one hand, and increases labor costs on the other. Utility Model Content

[0003] A technical problem to be solved by the utility model is to provide a cleaning device in a sedimentation filtering centrifuge which can backwash and clean the filter screen.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a cleaning device in a sedimentation filtering centrifuge, comprising: a machine base, and an outer drum transmission shaft movably arranged on the machine base, the outer drum transmission shaft is a hollow structure, in which an inner transmission shaft is movably arranged, a sedimentation drum is arranged on the outer drum transmission shaft, and the sedimentation drum comprises: a sedimentation straight cylinder section whose one end is connected to the outer drum transmission shaft through a sedimentation drum end cover, and a sedimentation conical cylinder section whose other end is connected to a diameter changing from large to small; the sedimentation filtering centrifuge The cleaning device in the machine also includes: a filter spiral in which the sedimentation cone section is covered, a filter drum in which the filter spiral is covered, a filter screen is arranged between the filter spiral and the filter drum, so that a liquid outlet chamber is formed between the filter screen and the filter drum; the filter spiral is connected to the inner transmission shaft, and the filter drum is connected to the sedimentation drum; the filter drum is provided with a cleaning cylinder on the outer side of the filter drum end cover, so that a cleaning liquid transfer chamber is formed between the cleaning cylinder and the filter drum end cover, and the side wall of the cleaning cylinder is provided with at least two columns opening outward along the circumferential direction. A plunger cavity, a plunger and a plug for sealing the opening of the plunger cavity are arranged in the plunger cavity, a return spring is arranged between the plunger and the bottom wall of the plunger cavity, one end of the return spring abuts against the plunger, and the other end of the return spring abuts against the bottom wall of the plunger cavity, a liquid outlet hole that penetrates and communicates with the cleaning liquid transfer chamber is opened on the inner and outer side walls of the plunger cavity, a cleaning liquid through hole that communicates with the cleaning liquid transfer chamber is opened on the inner side wall of the plunger cavity, the liquid outlet hole is close to one side of the filter drum, the cleaning liquid through hole is close to one side of the bottom wall of the cleaning cylinder, and the plunger An annular liquid outlet groove corresponding to the liquid outlet hole is provided on the plug; a filter drum shaft is provided on the filter drum end cover, the filter drum shaft is movably arranged on the machine base, a mechanical seal is provided on the filter drum shaft, a cleaning liquid inlet opening outward is provided in the mechanical seal, a cleaning liquid channel connecting the cleaning liquid inlet and the plunger cavity is provided in the filter drum shaft, the filter drum end cover, and the cylinder wall of the cleaning cylinder; at least two drainage holes connecting the liquid outlet chamber and the cleaning liquid transfer chamber are provided on the filter drum end cover along the circumferential direction.

[0005] As a preferred embodiment, in the cleaning device in the sedimentation filter centrifuge, the plunger is provided with a columnar extension matched with a return spring on the side close to the bottom wall of the plunger cavity, and the return spring is sleeved on the columnar extension of the plunger.

[0006] As a preferred solution, in the cleaning device in the sedimentation filtering centrifuge, a sedimentation spiral is arranged in the sedimentation drum, and the filtering spiral is connected to the inner transmission shaft through the sedimentation spiral.

[0007] As a preferred embodiment, in the cleaning device in the sedimentation filter centrifuge, the filter drum end cover includes: an inner cover body, and an outer cover body arranged outside the inner cover body, the outer cover body is connected to the filter drum, and the inner cover body is connected to the filter drum shaft; the cleaning cylinder is sleeved on the inner cover body of the filter drum end cover.

[0008] As a preferred solution, in the cleaning device in the sedimentation filtration centrifuge, the sedimentation drum end cover and the outer drum drive shaft are an integrated structure to form an outer drum flange shaft.

[0009] The beneficial effects of the utility model are:

[0010] 1. The utility model arranges a cleaning cylinder on the outer side of the filter drum end cover, arranges a plunger cavity in the cylinder wall of the cleaning cylinder, and arranges a plunger and a reset spring in the plunger cavity, so that when the filter needs to be cleaned, the cleaning liquid is directly introduced into the cleaning liquid inlet, and the cleaning liquid automatically pushes the plunger after entering the plunger cavity through the cleaning channel, opens the cleaning liquid through hole and closes the liquid outlet hole at the same time, so that the cleaning liquid enters the liquid outlet chamber to recoil and clean the filter, which is very simple, improves production efficiency and reduces labor costs.

[0011] 2. The utility model provides a columnar extension portion matched with the reset spring on the bottom wall side of the plunger close to the plunger cavity, and sleeves the reset spring on the columnar extension portion of the plunger, so that the reset spring works more smoothly.

[0012] 3. The utility model greatly facilitates the opening of the cleaning liquid channel and the installation of the cleaning cylinder by arranging the filter drum end cover into a split structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic cross-sectional structure diagram of the sedimentation filtering centrifuge of the utility model.

[0014] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure of part A.

[0015] Figure 3 yes Figure 2 Schematic diagram of the enlarged structure of part B.

[0016] Figure 4 yes Figure 3 Schematic diagram of the structure in which the cleaning liquid via is in an open state.

[0017] Figure 5 It is a schematic diagram of the three-dimensional structure of the filter spiral.

[0018] Figures 1 to 5The reference numerals in the drawings are: 1, base, 2, differential, 3, inner transmission shaft, 5, sedimentation drum, 50, sedimentation drum end cover, 501, outer drum transmission shaft, 51, sedimentation straight cylinder section, 52, sedimentation conical cylinder section, 6, sedimentation spiral, 7, filter spiral, 8, filter drum, 80, outer cover body, 801, drainage hole, 81, filter drum shaft, 811, first channel, 82, inner cover body, 821, first Second channel, 83, cleaning cylinder, 830, bottom wall, 8300, third channel, 832, plunger cavity, 833, cleaning liquid transfer chamber, 834, liquid outlet, 835, cleaning liquid through hole, 84, filter, 86, liquid outlet chamber, 87, plunger, 870, columnar extension, 874, annular liquid outlet groove, 88, reset spring, 89, plug, 891, intracavity channel, 9, mechanical seal, 92, cleaning liquid inlet. DETAILED DESCRIPTION

[0019] The specific implementation scheme of the cleaning device in the sedimentation filter centrifuge of the utility model is described in detail below in conjunction with the accompanying drawings.

[0020] like Figure 1 and Figure 2 As shown, the cleaning device in the sedimentation filtering centrifuge described in the utility model comprises a machine base 1, and an outer drum transmission shaft 501 movably arranged on the machine base 1, wherein the outer drum transmission shaft 501 is a hollow structure, wherein an inner transmission shaft 3 is movably arranged, a sedimentation drum 5 is arranged on the outer drum transmission shaft 501 through a sedimentation drum end cover 50, a sedimentation spiral 6 is arranged in the sedimentation drum 5, and the sedimentation spiral 6 is connected to the inner transmission shaft 3; the sedimentation drum 5 comprises: a sedimentation straight cylinder section 51, a sedimentation straight cylinder section 52, a sedimentation straight cylinder section 53, a sedimentation straight cylinder section 54, a sedimentation straight cylinder section 55, a sedimentation straight cylinder section 56, a sedimentation straight cylinder section 57, a sedimentation straight cylinder section 58, a sedimentation straight cylinder section 59, ...6, a sedimentation straight cylinder section 56, a sedimentation straight cylinder section 56, a sedimentation straight cylinder section 56, a sedimentation straight cylinder section 56, a sedimentation straight cylinder section 56, a sedimentation straight cylinder section 56, a sedimentation straight cylinder section 56, a sedimentation straight cylinder section 56, a sedimentation straight cylinder section 56, a sedimentation straight cylinder section 56, a sedimentation straight cylinder section 56, a sedimentation straight cylinder One end of the cylinder section 51 is connected to the sedimentation drum end cover 50, and the sedimentation drum end cover 50 is connected to the outer drum transmission shaft 501 (in this embodiment, the sedimentation drum end cover 50 and the outer drum transmission shaft 501 are an integrated structure to form an outer drum flange shaft); the other end of the sedimentation straight cylinder section 51 is connected to a sedimentation cone cylinder section 52 with a diameter that changes from large to small; the cleaning device in the sedimentation filtering centrifuge also includes: a filtering spiral 7 (see Figure 5 As shown), and the filter drum 8 in which the filter spiral 7 is covered, a filter screen 84 is arranged between the filter spiral 7 and the filter drum 8, so that a liquid outlet chamber 86 is formed between the filter screen 84 and the filter drum 8 (see Figure 2As shown in the figure, the filter screw 7 is connected to the sedimentation screw 6 (it belongs to the conventional technology in this field and will not be described in detail here), and the filter drum 8 is connected to the sedimentation drum 5 (it belongs to the conventional technology in this field and will not be described in detail here); the filter drum 8 is provided with a cleaning cylinder 83 on the outer side of the filter drum end cover, so that a cleaning liquid transfer chamber 833 is formed between the cleaning cylinder 83 and the filter drum end cover, and the side wall of the cleaning cylinder 83 is provided with at least two outwardly opening plunger cavities 832 along the circumferential direction, as shown in the figure. Figure 3 As shown, the plunger cavity 832 is provided with a return spring 88, a plunger 87, and a plug 89 for blocking the opening of the plunger cavity 832 in sequence. The plunger 87 is provided with a columnar extension 870 matched with the return spring 88 on the side of the bottom wall near the plunger cavity 832. The return spring 88 is sleeved on the columnar extension 870 of the plunger 87. One end of the return spring 88 abuts against the plunger 87, and the other end of the return spring 88 abuts against the bottom wall of the plunger cavity 832. The inner and outer side walls of the plunger cavity 832 are provided with a liquid outlet 834 that passes through and communicates with the cleaning liquid transfer chamber 833. The inner side wall of the plunger cavity 832 is provided with a cleaning liquid through hole 835 that communicates with the cleaning liquid transfer chamber 833. The liquid outlet 834 is close to one side of the filter drum 8, and the cleaning liquid through hole 835 is close to one side of the bottom wall 830 of the cleaning cylinder 83 (see Figure 1 As shown, the liquid outlet 834 is on the left side of the cleaning liquid through hole 835, and the plunger 87 is provided with an annular liquid outlet groove 874 corresponding to the liquid outlet 834; the corresponding end of the filter drum 8 ( Figure 1 The right end in FIG. 1 is connected to the filter drum shaft 81 through the filter drum end cover, such as Figure 2 As shown, the specific arrangement is as follows: the filter drum end cover comprises an outer cover body 80 connected to the filter drum 8, and an inner cover body 82 arranged together with the filter drum shaft 81 (in this embodiment, the filter drum shaft 81 and the inner cover body 82 are an integrated structure), the cleaning cylinder 83 is sleeved on the inner cover body 82 of the filter drum end cover; the filter drum shaft 81 is movably arranged on the base 1 (it belongs to the conventional technology in this field and will not be described in detail here), the filter drum shaft 81 is movably arranged on the base 1 (it belongs to the conventional technology in this field and will not be described in detail here), and the filter drum shaft 81 is movably arranged on the base 1 (it belongs to the conventional technology in this field and will not be described in detail here), and the filter drum shaft 81 is movably arranged on the base 1 (it belongs to the conventional technology in this field and will not be described in detail here). 1 is provided with a mechanical seal 9, and a cleaning liquid inlet 92 opening outward is provided in the mechanical seal 9, and a cleaning liquid channel connecting the cleaning liquid inlet 92 and the plunger cavity 832 is provided in the filter drum shaft 81, the inner cover body 82 of the filter drum end cover, and the bottom wall 830 of the cleaning cylinder 83, and the specific structure of the cleaning liquid channel includes: a first channel 811 axially provided in the filter drum shaft 81, a corresponding end ( Figure 1The first channel 811 comprises a second channel 821 vertically connected to the right end of the figure, a third channel 8300 connected to the second channel 821 and the plunger cavity 832, and the other end of the first channel 811 (the right end in the figure) is connected to the cleaning liquid inlet 92; an intracavity channel 891 connected to the third channel 8300 of the cleaning liquid channel is provided between the plug 89 and the inner wall of the plunger cavity 832; at least two drainage holes 801 connecting the liquid outlet chamber 86 and the cleaning liquid transfer chamber 833 are circumferentially provided on the outer cover body 80 of the filter drum end cover.

[0021] In actual application, the inner transmission shaft 3 and the outer drum transmission shaft 501 are connected to the differential 2. In actual use, when the filter screen 84 needs to be cleaned, the cleaning liquid can be directly introduced into the cleaning liquid inlet 92, and the cleaning liquid enters the plunger cavity 832 through the cleaning channel and automatically pushes the plunger 87, opens the cleaning liquid through hole 835 and closes the liquid outlet hole 834, so that the cleaning liquid enters the liquid outlet chamber 86 to backwash the filter screen 84.

[0022] In summary, the above are only preferred embodiments of the present utility model and are not intended to limit the scope of implementation of the present utility model. All equivalent changes and modifications made to the shape, structure, characteristics and spirit described in the scope of the claims of the present utility model should be included in the protection of the claims of the present utility model.

Claims

1. A cleaning device in a sedimentation filter centrifuge, comprising: A machine base, and an outer drum transmission shaft movably arranged on the machine base, the outer drum transmission shaft is a hollow structure, in which an inner transmission shaft is movably arranged, a sedimentation drum is arranged on the outer drum transmission shaft, and the sedimentation drum comprises: a sedimentation straight cylinder section whose one end is connected to the outer drum transmission shaft through a sedimentation drum end cover, and a sedimentation cone cylinder section whose diameter changes from large to small is connected to the other end of the sedimentation straight cylinder section; the cleaning device in the sedimentation filtering centrifuge also comprises: a filtering spiral covering the sedimentation cone cylinder section, and a filtering spiral covering the filtering spiral The filter drum is provided with a filter screen between the filter spiral and the filter drum, so that a liquid outlet chamber is formed between the filter screen and the filter drum; the filter spiral is connected to the inner transmission shaft, and the filter drum is connected to the sedimentation drum; it is characterized in that the filter drum is provided with a cleaning cylinder on the outer side of the filter drum end cover, so that a cleaning liquid transfer chamber is formed between the cleaning cylinder and the filter drum end cover, and the side wall of the cleaning cylinder is provided with at least two outwardly opening plunger cavities along the circumferential direction, and a plunger and a plug for sealing the plunger are provided in the plunger cavity. A plug for the opening of the plug cavity, a return spring is arranged between the plunger and the bottom wall of the plunger cavity, one end of the return spring abuts against the plunger, and the other end of the return spring abuts against the bottom wall of the plunger cavity, the inner and outer side walls of the plunger cavity are provided with a liquid outlet hole that passes through and communicates with the cleaning liquid transfer chamber, the inner side wall of the plunger cavity is provided with a cleaning liquid through hole that communicates with the cleaning liquid transfer chamber, the liquid outlet hole is close to one side of the filter drum, the cleaning liquid through hole is close to one side of the bottom wall of the cleaning cylinder, and the plunger is provided with a liquid outlet hole that communicates with the cleaning liquid transfer chamber an annular liquid outlet groove corresponding to the liquid hole; a filter drum shaft is arranged on the filter drum end cover, the filter drum shaft is movably arranged on the machine base, a mechanical seal is arranged on the filter drum shaft, a cleaning liquid inlet opening outward is arranged in the mechanical seal, a cleaning liquid channel connecting the cleaning liquid inlet and the plunger cavity is arranged in the filter drum shaft, the filter drum end cover, and the cylinder wall of the cleaning cylinder; at least two drainage holes connecting the liquid outlet chamber and the cleaning liquid transfer chamber are opened on the filter drum end cover along the circumferential direction.

2. The cleaning device in the sedimentation filter centrifuge according to claim 1, characterized in that: The plunger is provided with a columnar protrusion matched with a return spring on one side of the bottom wall of the plunger cavity, and the return spring is sleeved on the columnar protrusion of the plunger.

3. The cleaning device in the sedimentation filter centrifuge according to claim 1, characterized in that: The sedimentation drum is provided with a sedimentation spiral, and the filtering spiral is connected to the inner transmission shaft through the sedimentation spiral.

4. The cleaning device in the sedimentation filter centrifuge according to claim 1, characterized in that: The filter drum end cover comprises: an inner cover body and an outer cover body arranged outside the inner cover body, the outer cover body is connected to the filter drum, and the inner cover body is connected to the filter drum shaft; the cleaning cylinder is sleeved on the inner cover body of the filter drum end cover.

5. The cleaning device in a sedimentation filter centrifuge according to any one of claims 1 to 4, characterized in that: The end cover of the sedimentation drum and the outer drum transmission shaft are an integrated structure to form an outer drum flange shaft.

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