Backwashing device of granulation water filter

Abstract

The utility model discloses a backwashing device of a granulation water filter, and relates to the related technical field of underwater granulation. The device comprises a shell, a connecting pipe, a mounting frame, a backwashing spray pipe and a displacement assembly, a joint is fixed at one end of the shell, and one end, far away from the shell, of the joint is fixedly connected with the end part of the connecting pipe; a branch pipe is fixed on the peripheral side of the backwashing spray pipe in a penetrating manner, and nozzles distributed at equal intervals are fixed on the peripheral side surface of the backwashing spray pipe opposite to the branch pipe in a penetrating manner; a power spray hole I and a power spray hole II are also formed in the peripheral side of the backwashing spray pipe. Through the arrangement of the shell, the connecting pipe, the backwashing spray pipe, the spray head, the branch pipe, the mounting frame and the displacement assembly, the problems that manual cleaning is slow, the automation degree is low, the labor intensity of workers is high, the efficiency is low, and the same backwashing device is difficult to meet the requirement for cleaning two sieve plates are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field related to underwater granulation, in particular to a backwashing device for a granulation water filter. Background Art

[0002] At present, underwater granulation technology is widely used in the production process of polymer materials. There is an inclined screen filter in its PCW process flow, which mainly separates polymer particles and powders in PCW water. After the equipment has been running for a period of time, polymer particles and powders will accumulate on the sieve plate or get stuck in the gaps or holes of the sieve plate, affecting the subsequent filtration of pelletizing water. In order to ensure the normal operation of the filter, the sieve plate needs to be cleaned online, but it has the following disadvantages in the actual cleaning process:

[0003] At present, the screen plate cleaning mainly uses manual backwashing, but there are always some errors in manual cleaning, which may not be clean enough and comprehensive enough, and there may be some dead corners that cannot be cleaned, and the degree of automation is low;

[0004] Secondly, the cleaning methods for circular sieve plates and linear sieve plates are different, and the same backwash device is difficult to meet the cleaning needs of both sieve plates. Utility Model Content

[0005] The utility model aims to provide a backwash device for a granulation water filter, which solves the problems of slow manual cleaning, low automation, high labor intensity for workers, low efficiency, and difficulty in meeting the cleaning requirements of two sieve plates with the same backwash device by arranging a shell, a connecting pipe, a backwash nozzle, a nozzle, a branch pipe, a mounting frame, and a displacement assembly.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model is a backwash device for a granulation water filter, comprising a shell, a connecting pipe, a mounting frame, a backwash nozzle and a displacement assembly. A joint is fixed at one end of the shell, and an end of the joint away from the shell is fixedly connected to the end of the connecting pipe.

[0008] A branch pipe is fixedly passed through the circumference of the backwash nozzle, and nozzles distributed equidistantly are fixedly passed through the circumference of the backwash nozzle opposite to the branch pipe.

[0009] The mounting frame includes a base plate 1 and a base plate 2, and the base plate 2 is fixed outside the end of the connecting pipe away from the joint, two connecting plates are fixed between the base plate 1 and the base plate 2, a bearing is fixed through the base plate 1, one end of the branch pipe away from the backwash nozzle is fixed to the inner ring of the bearing, and one end of the connecting pipe away from the joint is fixed to the outer ring of the bearing;

[0010] The backwash nozzle is also provided with a first power spray hole and a second power spray hole on the circumference side thereof;

[0011] A displacement component is arranged above the connecting pipe.

[0012] Furthermore, a main pipe is fixed to one end of the shell away from the joint, a backwash control valve is fixed to the main pipe, and the shell and the main pipe are fixed by a flange.

[0013] Furthermore, the power spray hole 1 and the power spray hole 2 are arranged diagonally with respect to the center of the backwash nozzle, and the centers of the power spray hole 1 and the power spray hole 2 are on the same horizontal plane with the central axis of the backwash nozzle.

[0014] Furthermore, the nozzle is vertically upward, the branch pipe is vertically downward, and the inner diameter of the branch pipe is smaller than the inner diameter of the backwash nozzle.

[0015] Furthermore, the displacement assembly includes two mounting plates, and a sliding rod and a screw rod are fixed between the two mounting plates for rotation, and a motor is fixed on one side of a mounting plate away from the screw rod, and the output shaft of the motor passes through the mounting plate and is fixedly connected to the end of the screw rod.

[0016] Furthermore, sliders are fixed to the opposite sides of the two connecting plates, and the two sliders are respectively sleeved outside the slide rod and the screw rod, and the slider outside the screw rod is threadedly connected to the screw rod.

[0017] The utility model has the following beneficial effects:

[0018] The utility model solves the problems of slow manual cleaning, low automation, high labor intensity and low efficiency by arranging a shell, a connecting pipe, a backwashing nozzle, a nozzle, a branch pipe and a mounting frame; the traditional manual cleaning mode is changed, a main pipe is used to connect the backwashing medium input, and a backwashing control valve is used to control the flow size; the backwashing control valve is connected to an external control cabinet or a PLC controller, etc., and then enters the connecting pipe through the shell, enters the branch pipe through the connecting pipe, enters the backwashing nozzle, and then sprays out through the nozzle; the nozzle is located below the sieve plate, sprays out the backwashing medium for backwashing, and the medium sprayed by the nozzle passes through the sieve plate from the back of the sieve plate to clean out the particles or fine powder in the gaps or holes of the sieve plate and on the surface of the sieve plate, and enters the fine powder collecting tank along the sieve plate; at the same time, the backwashing medium is also sprayed out through the power nozzle hole 1 and the power nozzle hole 2, and due to the action of the reaction force, the backwashing nozzle can be rotated, and a rotary backwashing is performed below the sieve plate, so that the rotating area covered by the nozzle after the rotation of the nozzle can be cleaned, so that the cleaning is more efficient, the automation is high, and the labor intensity of the workers is reduced.

[0019] The utility model solves the problem that it is difficult for the same backwash device to meet the cleaning needs of two sieve plates by arranging a displacement component. When cleaning a circular sieve plate, the backwash nozzle can be rotated thereunder. If cleaning a linear sieve plate, the displacement component works and a motor drives the screw to rotate. At this time, due to the limitation of the slider on the slide bar, the slider on the screw will perform a linear displacement, driving the backwash nozzle to move in a linear direction, so that the backwash nozzle can perform a linear displacement while rotating for backwashing, thereby achieving comprehensive covering cleaning. The installation method is selected according to the actual sieve plate structure. The displacement component is installed on the linear sieve plate, but not on the circular sieve plate.

[0020] The utility model adopts the diagonal arrangement of the power spray hole 1 and the power spray hole 2, and does not require other external power input. Automatic rotation can be achieved when the cleaning medium is input, thereby reducing other power input, having low cost and less resource consumption.

[0021] The utility model has a relatively simple overall structure and is convenient to install and easy to implement.

[0022] The backwashing medium and the filtering medium used in the utility model are the same and can be recovered and used together after backwashing, thus reducing waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments are briefly introduced below.

[0024] Figure 1 A perspective view of a backwash device for a granulation water filter;

[0025] Figure 2 for Figure 1 Another structural diagram from another perspective;

[0026] Figure 3 This is the connection diagram of the backwash nozzle and the mounting frame;

[0027] Figure 4 It is a cross-sectional view of the backwash nozzle;

[0028] Figure 5 It is the connection diagram between the displacement assembly and the mounting frame;

[0029] Figure 6 The following is a structural diagram of the mounting frame.

[0030] Reference numerals:

[0031] 1. Main pipe; 101. Backwash control valve; 2. Shell; 201. Joint; 3. Connecting pipe; 4. Mounting frame; 401. Sliding block; 402. Base plate 1; 403. Connecting plate; 404. Base plate 2; 405. Bearing; 5. Backwash nozzle; 501. Nozzle; 502. Power nozzle 1; 503. Branch pipe; 504. Power nozzle 2; 6. Displacement assembly; 601. Mounting plate; 602. Sliding rod; 603. Screw; 604. Motor. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0033] See also Figure 1-6 As shown, the utility model is a backwash device for a granulation water filter, comprising a shell 2, a connecting pipe 3, a mounting frame 4, a backwash nozzle 5 and a displacement assembly 6. A joint 201 is fixed at one end of the shell 2, and an end of the joint 201 away from the shell 2 is fixedly connected to the end of the connecting pipe 3; the shell 2 is a transfer structure, and the shell 2 is a hollow structure and is connected to the connecting pipe 3 through the joint 201;

[0034] A branch pipe 503 is fixedly passed through the circumference of the backwash nozzle 5, and nozzles 501 distributed equidistantly are fixedly passed through the circumference of the backwash nozzle 5 opposite to the branch pipe 503;

[0035] The backwash nozzle 5 is connected to the external cleaning medium through the branch pipe 503. The backwash medium enters the backwash nozzle 5 and is sprayed out from the nozzle 501. The medium sprayed from the nozzle 501 passes through the sieve plate from the back of the sieve plate, washes out the particles or fine powder in the gaps or holes of the sieve plate and on the surface of the sieve plate, and enters the fine powder collection tank along the sieve plate.

[0036] The mounting frame 4 includes a base plate 1 402 and a base plate 2 404, and the base plate 2 404 is fixed to the end of the connecting pipe 3 away from the joint 201, and two connecting plates 403 are fixed between the base plate 1 402 and the base plate 2 404. A bearing 405 is fixed through the base plate 1 402, and the end of the branch pipe 503 away from the backwash nozzle 5 is fixed to the inner ring of the bearing 405, and the end of the connecting pipe 3 away from the joint 201 is fixed to the outer ring of the bearing 405;

[0037] The base plate 1 402 is connected to the branch pipe 503 through the bearing 405, so that the backwash nozzle 5 and the branch pipe 503 can rotate around the bearing 405, and the base plate 1 402 and the base plate 2 404 are fixed to form a frame structure through the connecting plate 403 to maintain the structural stability, and the base plate 2 404 is used for the connecting pipe 3 to pass through and remain fixed;

[0038] The backwash nozzle 5 is also provided with a power spray hole 1 502 and a power spray hole 2 504 on the circumference thereof; the backwash medium is also sprayed out through the power spray hole 1 502 and the power spray hole 2 504. Due to the reaction force, the backwash nozzle 5 can rotate and perform a rotary backwash under the sieve plate, so that the rotating area covered by the nozzle 501 after rotation is cleaned;

[0039] A displacement assembly 6 is arranged above the connecting pipe 3 ; the displacement assembly 6 can control the movement of the backwash nozzle 5 .

[0040] A main pipe 1 is fixed to one end of the housing 2 away from the joint 201, a backwash control valve 101 is fixed to the main pipe 1, and the housing 2 and the main pipe 1 are fixed by a flange.

[0041] One end of the main pipe 1 is connected to the housing 2, and the other end is connected to an external backwash medium input pipe, and the flow rate is controlled by a backwash control valve 101, which is connected to an external control cabinet or a PLC controller.

[0042] The power spray hole 1 502 and the power spray hole 2 504 are arranged diagonally with the center of the backwash nozzle 5, and the centers of the power spray hole 1 502 and the power spray hole 2 504 are on the same horizontal plane with the central axis of the backwash nozzle 5; after the backwash medium is sprayed out from the power spray hole 1 502 and the power spray hole 2 504, a reaction force is generated to rotate the backwash nozzle 5.

[0043] The nozzle 501 is vertically upward, the branch pipe 503 is vertically downward, and the inner diameter of the branch pipe 503 is smaller than the inner diameter of the backwash nozzle 5 .

[0044] The displacement assembly 6 includes two mounting plates 601, and a sliding rod 602 and a screw rod 603 are fixed between the two mounting plates 601, and a motor 604 is fixed on the side of one mounting plate 601 away from the screw rod 603, and the output shaft of the motor 604 passes through the mounting plate 601 where it is located and is fixedly connected to the end of the screw rod 603.

[0045] Slide blocks 401 are fixed on opposite sides of the two connecting plates 403. The two slide blocks 401 are respectively sleeved outside the slide bar 602 and the screw rod 603, and the slide blocks 401 outside the screw rod 603 are threadedly connected to the screw rod 603.

[0046] When the backwash nozzle 5 needs to be displaced linearly, the two mounting plates 601 are fixed by the slide bar 602 and are connected with the auxiliary screw 603 for rotation. When the motor 604 is working, the screw 603 is driven to rotate. At this time, due to the restriction of the slider 401 on the slide bar 602, the slider 401 on the screw 603 will be displaced linearly, thereby driving the overall displacement of the mounting frame 4 and driving the backwash nozzle 5 to move linearly, so that the backwash nozzle 5 can be displaced linearly while rotating for backwashing, thereby achieving comprehensive coverage cleaning.

[0047] The specific working principle of the utility model is as follows: first, one end of the main pipe 1 is connected to the shell 2, and the other end is connected to the external backwash medium input pipe, and the flow rate is controlled by the backwash control valve 101. The shell 2 is a transfer structure, and the backwash medium is transferred and transported. The shell 2 is a hollow structure. Then the backwash medium enters the connecting pipe 3, enters the branch pipe 503 through the connecting pipe 3, and then enters the backwash nozzle 5, and then is sprayed out through the nozzle 501. The nozzle 501 is located below the sieve plate and sprays the backwash medium for backwashing. The medium sprayed by the nozzle 501 passes through the sieve plate from the back of the sieve plate, washes out the particles or fine powder in the gaps or holes of the sieve plate and on the surface of the sieve plate, and enters the fine powder collection tank along the sieve plate; At the same time, the backwash medium is also sprayed out through the power spray hole 1 502 and the power spray hole 2 504. Due to the reaction force, the backwash nozzle 5 rotates around the bearing 405, and performs rotary backwashing under the screen plate. When the backwash nozzle 5 needs to be linearly displaced, the two mounting plates 601 are fixed by the slide bar 602, and the auxiliary screw 603 is connected for rotation. When the motor 604 is working, the screw 603 is driven to rotate. At this time, due to the restriction of the slider 401 on the slide bar 602, the slider 401 on the screw 603 will be linearly displaced, thereby driving the overall displacement of the mounting frame 4, driving the backwash nozzle 5 to move linearly, and completing linear coverage cleaning.

[0048] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments and any equivalent replacement of some of the technical features therein, as well as any modification, equivalent replacement and improvement made, are within the protection scope of the present invention.

Claims

1. A backwash device for a granulation water filter, comprising a housing (2), a connecting pipe (3), a mounting frame (4), a backwash nozzle (5) and a displacement assembly (6), characterized in that: A joint (201) is fixed to one end of the shell (2), and an end of the joint (201) away from the shell (2) is fixedly connected to an end of the connecting pipe (3); A branch pipe (503) is fixedly passed through the circumferential side of the backwash nozzle (5), and nozzles (501) distributed at equal intervals are fixedly passed through the circumferential side of the backwash nozzle (5) opposite to the branch pipe (503); The mounting frame (4) comprises a first base plate (402) and a second base plate (404), and the second base plate (404) is fixed to the outside of an end of the connecting pipe (3) away from the joint (201), two connecting plates (403) are fixed between the first base plate (402) and the second base plate (404), a bearing (405) is fixedly passed through the first base plate (402), an end of the branch pipe (503) away from the backwash nozzle (5) is fixed to the inner ring of the bearing (405), and an end of the connecting pipe (3) away from the joint (201) is fixed to the outer ring of the bearing (405); The backwash nozzle (5) is also provided with a first power spray hole (502) and a second power spray hole (504) on the circumference thereof; A displacement component (6) is arranged above the connecting pipe (3).

2. A granulation water filter backwashing device according to claim 1, characterized in that: A main pipe (1) is fixed to one end of the housing (2) away from the joint (201), a backwash control valve (101) is fixed to the main pipe (1), and the housing (2) and the main pipe (1) are fixed via a flange.

3. A granulation water filter backwashing device according to claim 1, characterized in that: The power spray hole 1 (502) and the power spray hole 2 (504) are arranged diagonally with respect to the center of the backwash spray pipe (5); the centers of the power spray hole 1 (502) and the power spray hole 2 (504) are on the same horizontal plane as the central axis of the backwash spray pipe (5).

4. A granulation water filter backwashing device according to claim 1, characterized in that: The nozzle (501) is vertically upward, the branch pipe (503) is vertically downward, and the inner diameter of the branch pipe (503) is smaller than the inner diameter of the backwash nozzle (5).

5. A granulation water filter backwashing device according to claim 1, characterized in that: The displacement assembly (6) comprises two mounting plates (601), and a sliding rod (602) and a screw rod (603) are fixed between the two mounting plates (601) and are rotatably connected thereto. A motor (604) is fixed to a side of one mounting plate (601) away from the screw rod (603), and an output shaft of the motor (604) passes through the mounting plate (601) on which it is located and is fixedly connected to the end of the screw rod (603).

6. A granulation water filter backwashing device according to claim 5, characterized in that: Slide blocks (401) are fixed to opposite sides of the two connecting plates (403), and the two slide blocks (401) are respectively sleeved outside the slide rod (602) and the screw rod (603), and the slide block (401) outside the screw rod (603) is threadedly connected to the screw rod (603).

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