Piston type filtering equipment

Abstract

The utility model provides piston type filtering equipment, and relates to filtering equipment, the piston type filtering equipment comprises a plurality of groups of filtering units arranged in a mounting box frame side by side, each group of filtering units comprises a piston cylinder body and a piston block, the top of each piston block is rotationally connected with a piston rod through a pin shaft I, and a crankshaft parallel to the pin shaft I is erected at the upper part of the mounting box frame; the crankshaft is driven by a group of driving pieces to rotate around the center of the main journals of the crankshaft and comprises a plurality of groups of connecting rod journals in one-to-one correspondence with the filtering units, the two ends of each connecting rod journal are connected with the main journals at the two ends through crank arms, and the end part of the piston rod is sleeved outside the connecting rod journals and drives the piston block to reciprocate in the piston cylinder body when the crankshaft rotates; according to the utility model, a plurality of groups of piston blocks in different driving states can be synchronously reciprocated through a group of driving pieces, the whole structure is simple, the filter units are designed in a modularized manner, the flow demand can be realized by increasing or reducing the flow of the filter units according to the demand, and the maintenance and the adjustment are more convenient.

Description

Technical Field

[0001] The utility model relates to a filtering device, in particular to a piston type filtering device. Background Art

[0002] In filtration theory, most filtration relies on creating a pressure difference to separate solids and liquids. The piston-type filtration unit proposed for the filtration industry this time uses the piston movement to create a pressure difference to achieve filtration. In the prior art, although there is also a technology that uses a piston to provide a pressure difference to achieve filtration, the driving arrangement of the structure is generally cumbersome and not convenient for subsequent maintenance and adjustment. Utility Model Content

[0003] In order to solve the above technical problems, the purpose of the utility model is to provide a piston-type filtering device, which can synchronously perform reciprocating motion of multiple groups of piston blocks in different driving states through a set of driving parts. The overall structure is simple, and the filtering unit is modularly designed. The filtering unit can be increased or decreased according to the required flow to meet the flow requirement, the filtering material can be changed to meet the requirements of filtering accuracy, and maintenance and adjustment are also relatively convenient.

[0004] The utility model provides the following technical solutions:

[0005] A piston-type filtering device, comprising a mounting box frame and a plurality of filter units arranged side by side in the mounting box frame, each filter unit comprising a group of piston cylinders and piston blocks that cooperate with each other, the two ends of the bottom side wall of the piston cylinder are respectively connected with a slag discharge pipe and a liquid inlet pipe, the bottom end of which is provided with a liquid outlet pipe blocked by a filter screen, and the branch of the liquid outlet pipe is connected with a recoil pipe, and the slag discharge pipe, the liquid inlet pipe, the liquid outlet pipe and the recoil pipe are all controlled to open and close by valves;

[0006] Therefore, by designing the relative movement of the piston cylinder and the piston block, instantaneous high negative pressure and positive pressure can be created, and the negative pressure and positive pressure as well as the valve can be used to perform the lifting filtration process or the backwash slag discharge process:

[0007] During the lifting and filtering process: the piston block moves upward to generate negative pressure, the valve of the liquid inlet pipe opens, and the oil in the dirty oil tank can enter the piston cylinder through the liquid inlet pipe. When the piston block moves downward to generate positive pressure, the valve of the liquid inlet pipe closes, and the valve of the liquid outlet pipe opens. The oil can pass through the filter net under positive pressure and be discharged from the liquid outlet pipe to the clean oil pool;

[0008] During the recoil discharge process: the piston moves upward to generate negative pressure, and the valve of the recoil pipe opens. The oil in the recoil clean oil pool can backwash the filter screen, and then the valve of the slag discharge pipe is opened. At this time, the piston moves downward to generate positive pressure to carry out the slag discharge process;

[0009] A group of piston rods are installed on the top of the piston block through a pin shaft transfer, and a group of crankshafts arranged in parallel with the pin shaft are mounted on the upper part of the mounting box frame. The crankshaft is driven to rotate around the center of its main journal by a group of driving members. The crankshaft includes a plurality of connecting rod journals corresponding to the filter units one by one. The two ends of the connecting rod journals are connected to the main journals at both ends through crank arms. The end of the piston rod is sleeved outside the connecting rod journal, and drives the piston block to reciprocate in the piston cylinder when the crankshaft rotates.

[0010] At this point, through the rotation of a set of crankshafts, multiple groups of piston blocks in different driving states can be synchronously reciprocated in the piston cylinder. The overall structure is simple, and the filter unit is modularly designed. The filter unit can be increased or decreased according to the required flow to meet the flow demand. The filter material can be changed to meet the requirements of filtering accuracy, and maintenance and adjustment are also relatively convenient.

[0011] Preferably, the driving component includes a reduction motor, a transmission sprocket, a driven sprocket and a transmission chain. The driving motor is installed on the upper part of the mounting box frame, and a transmission sprocket is installed at its driving end. A driven sprocket connected to the transmission sprocket through a transmission chain is installed outside the main shaft neck. At this time, the reciprocating motion of the piston blocks in multiple groups of filter units can be performed through a group of reduction motors, and the stability of the chain drive is also good.

[0012] Preferably, the installation box frame includes a accommodating area box body installed outside the filter unit and a clean oil pool area box body located on one side of the accommodating area box body. The filter residue barrel is located on the other side of the accommodating area box body and is fixed by a residue barrel bracket. The residue discharge pipe passes through the accommodating area box body and is connected to the filter residue barrel. Therefore, when it is necessary to filter the liquid in the dirty oil tank, the installation box frame and the filter residue barrel can be uniformly distributed above the dirty oil tank, and then the oil inlet pipe can be connected to the dirty oil tank.

[0013] Preferably, the filter residue barrel comprises a barrel body and a barrel cover located at the opening of the bottom end of the barrel body, one end of the barrel cover is mounted on the side wall of the barrel body through a group of connecting plates, a driving cylinder is provided on one side of the barrel body, the driving end of the driving cylinder is hingedly mounted on the connecting plate, and is used to drive the barrel cover to close by driving the connecting plate to rotate around the connecting shaft, and three groups of clamping cylinders are also installed on the slag barrel bracket, the driving end of the clamping cylinder is fixed with an engaging block, and the end of the engaging block is provided with an expanding groove, when the barrel cover is closed with the edge of the barrel body, the expanding groove is clamped on the outside of the barrel cover and the edge under the top pressure of the clamping cylinder, so as to achieve the sealing of the barrel body and the barrel cover. Therefore, when the slag needs to be cleaned, it is only necessary to start the clamping cylinder and the driving cylinder to automatically open the barrel cover, and the slag receiving barrel can be placed under the barrel body for receiving the slag.

[0014] Preferably, when the filter unit is provided with at least three groups, a group of driven sprockets are distributed on the main shaft necks corresponding to the piston rods of any two groups, a group of extension shafts are connected to the driving end of the reduction motor, and the transmission sprockets are provided with multiple groups corresponding to the driven sprockets one by one, and any corresponding transmission sprockets and driven sprockets are driven by a group of transmission chains. In this way, the bending of the main shaft neck of the crankshaft due to unbalanced force when driving the piston block can be avoided.

[0015] The beneficial effects of the utility model are:

[0016] In the present utility model, since the filter unit is modularly designed and placed in the mounting box frame, the filter unit can be increased or decreased according to the required flow rate to meet the flow rate requirement, the filter material can be changed to meet the requirements of the filtering accuracy, and the maintenance and adjustment are also relatively convenient. In the modular combination filter unit, each piston block can be driven by only one set of crankshafts to synchronously perform the reciprocating motion of multiple sets of piston blocks in different driving states in the piston cylinder, so the overall structure is also relatively simple and convenient.

[0017] In the present utility model, by designing the relative movement of the piston cylinder and the piston block, instantaneous high negative pressure and positive pressure can be created, and the negative pressure, positive pressure and valve cooperation are used to perform a lifting and filtering process or a backwashing and slag removal process. In the lifting and filtering process: the piston block moves upward to generate negative pressure, and the valve of the liquid inlet pipe is opened, so that the oil in the dirty oil tank can enter the piston cylinder through the liquid inlet pipe. When the piston block moves downward to generate positive pressure, the valve of the liquid inlet pipe is closed, and the valve of the liquid outlet pipe is opened, and the oil can be discharged from the liquid outlet pipe to the clean oil pool through the filter net under positive pressure; and in the backwashing and slag removal process: the piston block moves upward to generate negative pressure, and the valve of the backwash pipe is opened, and the oil in the backwashing and clean oil pool can backwash the filter net, and then the valve of the slag removal pipe is opened, and the piston block moves downward to generate positive pressure to perform the slag removal process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 It is a structural sectional view of the utility model;

[0021] Figure 3 yes Figure 1 The schematic diagram of the structure after the installation box frame is removed in the middle section;

[0022] Figure 4 It is a structural schematic diagram of the filter residue barrel;

[0023] Markings in the figure:

[0024] 1. Installation box frame; 2. Filter unit; 3. Filter residue barrel; 4. Crankshaft; 11. Accommodation area box; 12. Clean oil pool area box; 21. Piston cylinder; 22. Piston block; 23. Piston rod; 24. Pin shaft 1; 25. Slag discharge pipe; 26. Liquid inlet pipe; 27. Liquid outlet pipe; 28. Recoil pipe; 31. Slag barrel bracket; 32. Barrel body; 33. Barrel cover; 34. Connecting plate; 35. Drive cylinder; 36. Clamping cylinder; 37. Clamping block; 38. Expanded slot; 41. Main journal; 42. Connecting rod journal; 43. Crank arm; 44. Speed ​​reducer motor; 45. Drive sprocket; 46. Driven sprocket; 47. Drive chain. DETAILED DESCRIPTION

[0025] Example 1

[0026] like Figure 1-4 As shown, a piston-type filtering device, in this embodiment, includes a mounting box frame 1 and two groups of filtering units 2 arranged side by side in the mounting box frame 1, each group of filtering units 2 includes a group of piston cylinders 21 and piston blocks 22 that cooperate with each other, the two ends of the bottom side wall of the piston cylinder 21 are respectively connected with a slag discharge pipe 25 and a liquid inlet pipe 26, and the bottom end thereof is installed with a liquid outlet pipe 27 blocked by a filter screen, and the branch of the liquid outlet pipe 27 is connected with a backwash pipe 28, and the slag discharge pipe 25, the liquid inlet pipe 26, the liquid outlet pipe 27 and the backwash pipe 28 are all controlled to open and close by valves;

[0027] Therefore, by designing the relative movement of the piston cylinder 21 and the piston block 22, instantaneous high negative pressure and positive pressure can be produced, and the negative pressure and positive pressure as well as the valve can be used to perform the lifting and filtering process or the backwashing and slag removal process;

[0028] During the lifting and filtering process: the piston block 22 moves upward to generate negative pressure, the valve of the liquid inlet pipe 26 opens, and the oil in the dirty oil tank can enter the piston cylinder 21 through the liquid inlet pipe 26. When the piston block 22 moves downward to generate positive pressure, the valve of the liquid inlet pipe 26 is closed, and the valve of the liquid outlet pipe 27 opens, and the oil can pass through the filter net under positive pressure and be discharged from the liquid outlet pipe 27 to the clean oil pool;

[0029] During the recoil discharge process: the piston block 22 moves upward to generate negative pressure, at which time the valve of the recoil pipe 28 opens, and the oil in the recoil clean oil pool can backwash the filter screen, and then the valve of the slag discharge pipe 25 is opened, and at this time the piston block 22 moves downward to generate positive pressure to carry out the slag discharge process;

[0030] A group of piston rods 23 are installed on the top of the piston block 22 through a pin shaft 24. A group of crankshafts 4 arranged parallel to the pin shaft 24 are mounted on the upper part of the mounting box frame 1. The crankshaft 4 is driven to rotate around the center of its main journal 41 by a group of driving members. The crankshaft 4 includes a plurality of connecting rod journals 42 corresponding to the filter units 2 one by one. The two ends of the connecting rod journal 42 are connected to the main journals 41 at both ends through crank arms 43. The end of the piston rod 23 is sleeved outside the connecting rod journal 42, and when the crankshaft 4 rotates, it drives the piston block 22 to reciprocate in the piston cylinder 21.

[0031] At this point, through the rotation of a set of crankshafts 4, multiple groups of piston blocks 22 in different driving states can be synchronously reciprocated in the piston cylinder. The overall structure is simple, and the filter unit 2 is modularly designed. The filter unit 2 can be increased or decreased according to the required flow to meet the flow requirement. The filter material can be changed to meet the requirements of filtering accuracy, and maintenance and adjustment are also relatively convenient.

[0032] The driving parts include a reduction motor 44, a transmission sprocket 45, a driven sprocket 46 and a transmission chain 47. The driving motor is installed on the upper part of the mounting box frame 1, and the driving end thereof is installed with a transmission sprocket 45. The main shaft neck 41 is externally installed with a driven sprocket 46 which is connected to the transmission sprocket 45 through a transmission chain 47. At this time, a group of reduction motors 44 can be used to perform reciprocating motion of the piston blocks 22 in multiple groups of filter units 2, and the stability of the chain drive is also good.

[0033] The mounting box frame 1 includes a housing area box body 11 mounted outside the filter unit 2 and a clean oil pool area box body 12 located on one side of the housing area box body 11. The filter residue barrel 3 is located on the other side of the housing area box body 11 and is fixed by a residue barrel bracket 31. The residue discharge pipe 25 passes through the housing area box body 11 and is connected to the filter residue barrel 3. Therefore, when it is necessary to filter the liquid in the dirty oil tank, the mounting box frame 1 and the filter residue barrel 3 can be uniformly distributed above the dirty oil tank, and the oil inlet pipe can be connected to the dirty oil tank.

[0034] The filter residue barrel 3 includes a barrel body 32 and a barrel cover 33 located at the bottom opening of the barrel body 32. One end of the barrel cover 33 is installed on the side wall of the barrel body 32 through a set of connecting plates 34. A driving cylinder 35 is installed on one side of the barrel body 32. The driving end of the driving cylinder 35 is hingedly installed on the connecting plate 34, which is used to drive the barrel cover 33 to close by driving the connecting plate 34 to rotate around the transfer axis. In addition, three sets of clamping cylinders 36 are installed on the slag barrel bracket 31. The driving end of the clamping cylinder 36 is hingedly installed on the connecting plate 34. A clamping block 37 is fixed to the moving end, and a flared slot 38 is provided at the end of the clamping block 37. When the barrel cover 33 covers the edge of the barrel body 32, the flared slot 38 is clamped on the barrel cover 33 and the edge under the top pressure of the clamping cylinder 36, so as to achieve the sealing of the barrel body 32 and the barrel cover 33. Therefore, when slag cleaning is required, it is only necessary to start the clamping cylinder 36 and the driving cylinder 35 to automatically open the barrel cover 33, and the slag receiving barrel can be placed under the barrel body 32 for receiving slag.

[0035] The driven sprocket 46 is mounted on the main journal 41 corresponding to the two groups of piston rods 23 . Therefore, when the driven sprocket 46 is distributed between the piston rods 23 of the two groups of filter units 2 , the transmission stability is better.

[0036] Example 2

[0037] A piston-type filtering device, in this embodiment, is further limited based on embodiment 1, that is, when there are at least three groups of filtering units 2, a group of driven sprockets 46 are distributed on the main shaft necks 41 corresponding to the piston rods 23 of any two groups, a group of extension shafts are connected to the driving end of the reduction motor 44, and a plurality of transmission sprockets 45 are provided with one-to-one corresponding to the driven sprockets 46, and any corresponding transmission sprockets 45 and driven sprockets 46 are driven by a group of transmission chains 47. In this way, the main shaft neck 41 of the crankshaft 4 can be prevented from bending due to unbalanced force when driving the piston block 22.

[0038] The working principle of the utility model is:

[0039] In the present utility model, since the filter unit 2 is modularly designed and placed in the mounting box frame 1, the filter unit 2 can be increased or decreased according to the required flow rate to meet the flow rate requirement, the filter material can be changed to meet the requirements of the filtering accuracy, and the maintenance and adjustment are also relatively convenient. In the modular combination filter unit 2, each piston block 22 can be driven by only one set of crankshafts 4 to synchronously perform the reciprocating motion of multiple sets of piston blocks 22 in different driving states in the piston cylinder, so the overall structure is also relatively simple and convenient;

[0040] In the present utility model, by designing the relative movement of the piston cylinder 21 and the piston block 22, an instantaneous high negative pressure and positive pressure can be created, and the negative pressure and positive pressure as well as the valve are used to perform a lifting filtering process or a backwashing and slag removal process. In the lifting filtering process: the piston block 22 moves upward to generate negative pressure, and the valve of the liquid inlet pipe 26 is opened, so that the oil in the dirty oil tank can enter the piston cylinder 21 through the liquid inlet pipe 26; when the piston block 22 moves downward to generate positive pressure, the valve of the liquid inlet pipe 26 is closed, and the valve of the liquid outlet pipe 27 is opened, and the oil can be discharged from the liquid outlet pipe 27 to the clean oil pool through the filter screen under positive pressure; and in the backwashing and slag removal process: the piston block 22 moves upward to generate negative pressure, and the valve of the backwash pipe 28 is opened, so that the oil in the backwashing clean oil pool can backwash the filter screen, and then the valve of the slag removal pipe 25 is opened, and the piston block 22 moves downward to generate positive pressure, so that the slag removal process can be performed.

[0041] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A piston filter device, characterized in that: The invention comprises an installation box frame (1) and a plurality of filter units (2) arranged side by side in the installation box frame (1), each filter unit (2) comprises a group of piston cylinders (21) and piston blocks (22) which cooperate with each other, the two ends of the bottom side wall of the piston cylinder (21) are respectively connected with a slag discharge pipe (25) and a liquid inlet pipe (26), the bottom end of which is provided with a liquid outlet pipe (27) blocked by a filter screen, and the branch of the liquid outlet pipe (27) is connected with a backwash pipe (28), and the slag discharge pipe (25), the liquid inlet pipe (26), the liquid outlet pipe (27) and the backwash pipe (28) are all controlled to open and close by valves; A group of piston rods (23) are mounted on the top of the piston block (22) via a pin shaft (24). A group of crankshafts (4) arranged parallel to the pin shaft (24) are mounted on the upper part of the mounting box frame (1). The crankshaft (4) is driven to rotate around the center of its main journal (41) by a group of driving members. The crankshaft (4) includes a plurality of groups of connecting rod journals (42) corresponding to the filter units (2) one by one. The two ends of the connecting rod journals (42) are connected to the main journals (41) at both ends via crank arms (43). The end of the piston rod (23) is sleeved outside the connecting rod journal (42) and drives the piston block (22) to perform reciprocating motion in the piston cylinder (21) when the crankshaft (4) rotates.

2. A piston-type filtering device according to claim 1, characterized in that: The driving member comprises a reduction motor (44), a transmission sprocket (45), a driven sprocket (46) and a transmission chain (47); the driving motor is mounted on the upper part of the mounting box frame (1); a transmission sprocket (45) is mounted on the driving end of the driving motor; a driven sprocket (46) is mounted outside the main shaft journal (41) and is transmission-connected to the transmission sprocket (45) via a transmission chain (47).

3. A piston-type filtering device according to claim 1, characterized in that: The mounting box frame (1) comprises a housing area box (11) mounted outside the filter unit (2) and an oil cleaning tank area box (12) located on one side of the housing area box (11); a filter residue barrel (3) is located on the other side of the housing area box (11) and is fixedly mounted by a residue barrel bracket (31); and the residue discharge pipe (25) passes through the housing area box (11) and is connected to the filter residue barrel (3).

4. A piston-type filtering device according to claim 3, characterized in that: The filter residue barrel (3) comprises a barrel body (32) and a barrel cover (33) located at the bottom opening of the barrel body (32); one end of the barrel cover (33) is connected and mounted on the side wall of the barrel body (32) via a set of connecting plates (34); a driving cylinder (35) is provided on one side of the barrel body (32); a driving end of the driving cylinder (35) is hingedly mounted on the connecting plate (34) and is used to drive the barrel cover (33) to rotate around the connecting shaft by driving the connecting plate (34). The slag bucket bracket (31) is also provided with three groups of clamping cylinders (36). A clamping block (37) is fixed to the driving end of the clamping cylinder (36). An expanded opening (38) is provided at the end of the clamping block (37). When the bucket cover (33) covers the edge of the bucket body (32), the expanded opening (38) is clamped to the outside of the bucket cover (33) and the edge under the top pressure of the clamping cylinder (36), so as to achieve sealing between the bucket body (32) and the bucket cover (33).

5. The piston-type filtering device according to claim 2, characterized in that: The filter unit (2) is provided with two groups, and the driven sprocket (46) is installed on the corresponding main journal (41) between the two groups of piston rods (23).

6. A piston-type filtering device according to claim 2, characterized in that: When the filter unit (2) is provided with at least three groups, a group of driven sprockets (46) are distributed on the main shaft necks (41) corresponding to the piston rods (23) of any two groups, a group of extension shafts are connected to the driving end of the reduction motor (44), and the transmission sprockets (45) are provided with multiple groups corresponding to the driven sprockets (46) one by one, and any corresponding transmission sprockets (45) and driven sprockets (46) are driven by a group of transmission chains (47).

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