Outer alloy filter screen of desulfurizing absorption tower

Abstract

The utility model discloses an alloy filter screen outside a desulfurizing absorption tower, which comprises a body assembled at a water delivery port of a circulating pump. The sieve plate is assembled on the body in a sliding manner, and a plurality of sieve holes are formed in the sieve plate; the dredging needles are arranged on the body and are matched with the sieve holes in an inserting manner so as to eject blockages; wherein one end, facing water flow, of each of the body and the sieve plate is of a concave structure. According to the outer alloy filter screen of the desulfurizing absorption tower, when solid sediments in water block sieve holes in the sieve plate through the pushing force of water pressure on the sieve plate, the water pressure pushes the sieve plate to slide, so that the sieve plate is close to the body, the dredging needles poke out or cut up the blocked sediments, manual dredging is not needed, and the sediments are preliminarily screened out through the sieve plate; according to the device, large-particle sediments are prevented from directly blocking the body, the sediments blocked on the sieve holes are removed in time, and meanwhile, the sediments intercepted on the sieve plate are driven to shake in the moving process of the sieve plate, so that the large-particle solid sediments are crushed.

Description

Technical Field

[0001] The utility model relates to the technical field of desulfurization towers, in particular to an alloy filter screen outside a desulfurization absorption tower. Background Art

[0002] In conjunction with announcement number CN212119171U, published on 2020-12-11, an alloy filter screen for the outside of a desulfurization absorption tower is disclosed.

[0003] In the prior art including the above patent, the filter cylinder is arranged on the outside of the side wall of the absorption tower body, and the filter cylinder is semi-cylindrical, including a semi-circular bottom surface located at the front and back and an arc-shaped side surface connecting the two semi-circular bottom surfaces, and the semi-circular bottom surface and the arc-shaped side surface are both provided with a plurality of filter holes, and the semi-circular bottom surface and the arc-shaped side surface are connected to form an opening for the absorption tower slurry to flow, and a mounting plate is arranged on the periphery of the opening, and the mounting plate is fixed to the absorption tower body. The above device solves the problem of inconvenient maintenance of the filter by arranging a filter outside the tower, but because there are many solid particles in the absorption tower slurry pool, it is easy to cause blockage when passing through the filter. At this time, it is inconvenient to disassemble and remove the filter in the production link, which affects the use of the circulation pump. Utility Model Content

[0004] The utility model aims to provide an alloy filter screen outside a desulfurization absorption tower, which is used to solve the above problems.

[0005] In order to achieve the above object, the utility model provides the following technical solution: an alloy filter screen outside a desulfurization absorption tower, comprising:

[0006] A body, which is assembled at the water inlet of the circulation pump;

[0007] A sieve plate slidably mounted on the body, wherein a plurality of sieve holes are formed on the sieve plate;

[0008] A drainage needle is arranged on the body, and is plugged into and matched with the sieve hole to eject the blockage;

[0009] Wherein: the end of the main body and the screen plate facing the water flow are both concave structures.

[0010] Preferably, the sieve hole is a truncated cone structure, and the end facing the water flow is a wide part, and the other end opposite thereto is a narrow part.

[0011] Preferably, the drainage needle comprises a blade rotatably arranged on the body and a triangular needle axially arranged on the blade.

[0012] Preferably, the outer diameter of the blade is larger than the inner diameter of the narrow portion of the sieve hole.

[0013] Preferably, a plurality of slide rails are arranged on the main body in a circumferential array, and the sieve plate is slidably arranged on the slide rails.

[0014] Preferably, a plurality of return springs are arranged between the sieve plate and the body.

[0015] In the above technical scheme, the utility model provides an alloy filter screen outside a desulfurization absorption tower, which has the following beneficial effects: through the thrust of the sieve plate by water pressure, when the solid sediment in the water blocks the sieve holes on the sieve plate, the water pressure pushes the sieve plate to slide, so that the sieve plate is close to the main body, and the drainage needle pokes out or cuts the blocked sediment without manual drainage. After the preliminary screening of the sieve plate, large pieces of sediment are prevented from directly blocking the main body, and the sediment blocked on the sieve holes is removed in time. At the same time, the sediment intercepted on the sieve plate is driven to swing during the movement of the sieve plate, so that the large pieces of solid sediment are broken. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 An overall three-dimensional schematic diagram provided for an embodiment of the utility model;

[0018] Figure 2 A schematic diagram of a sieve plate and a body provided in an embodiment of the utility model;

[0019] Figure 3 A schematic diagram of a drainage needle provided in an embodiment of the utility model;

[0020] Figure 4 A schematic diagram of a slide rail and a body provided in an embodiment of the utility model;

[0021] Figure 5 A schematic diagram of the initial positions of the body and the sieve plate provided in an embodiment of the utility model;

[0022] Figure 6 A schematic diagram of the terminal positions of the body and the sieve plate provided in an embodiment of the utility model.

[0023] Description of reference numerals:

[0024] 1. Main body; 11. Slide rail; 2. Screen plate; 21. Screen hole; 3. Guide needle; 31. Triangular needle; 32. Blade; 4. Return spring. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] like Figure 1-6 As shown, an alloy filter screen outside a desulfurization absorption tower includes a body 1, which is assembled at the water inlet of a circulation pump;

[0027] A sieve plate 2 is slidably mounted on the body 1, and a plurality of sieve holes 21 are formed on the sieve plate 2;

[0028] The drainage needle 3 provided on the body 1 is plugged into and matched with the sieve hole 21 to eject the blockage;

[0029] Wherein: the ends of the body 1 and the sieve plate 2 facing the water flow are both concave structures.

[0030] Specifically, a filter screen is installed on the main body 1. When the circulating pump is working, water enters the water inlet so that the water pressure directly presses the sieve plate 2. Since the water-facing surface of the sieve plate 2 is concave, the pressure on the sieve plate 2 is concentrated on the central axis, and the thrust of the water pressure on the sieve plate 2 is more stable. When the solid sediment in the water blocks the sieve hole 21 on the sieve plate 2, the water pressure pushes the sieve plate 2 to slide, so that the sieve plate 2 is close to the main body 1, and the drainage needle 3 on the main body 1 corresponds to the sieve hole 21. The drainage needle 3 pokes out or cuts the blocked sediment without manual drainage. After preliminary screening by the sieve plate 2, large particles of sediment are prevented from directly blocking the main body 1, and the sediment blocked on the sieve hole 21 is removed in time.

[0031] In the above technology, the sieve plate 2 is pushed by the water pressure. When the solid sediment in the water blocks the sieve holes 21 on the sieve plate 2, the water pressure pushes the sieve plate 2 to slide, so that the sieve plate 2 is close to the main body 1, and the drainage needle 3 pokes out or cuts the blocked sediment without manual drainage. After the preliminary screening of the sieve plate 2, large pieces of sediment are prevented from directly blocking the main body 1, and the sediment blocked on the sieve holes 21 is removed in time. At the same time, the sediment intercepted on the sieve plate 2 is driven to swing during the movement of the sieve plate 2, so that the large pieces of solid sediment are broken.

[0032] As an embodiment further provided by the present invention, the sieve hole 21 is a truncated cone structure, and the end facing the water flow is a wide part, and the other end opposite thereto is a narrow part.

[0033] Specifically, the truncated cone structure can increase the contact area between the sieve plate 2 and the water flow, amplify the push effect of the water flow, and when the water flows through the sieve hole 21, the cross-sectional area is reduced, so that the water flow speed in the narrow part of the sieve hole 21 is accelerated.

[0034] As another embodiment further provided by the present invention, the drainage needle 3 includes a blade 32 rotatably disposed on the body 1 and a triangular needle 31 axially disposed on the blade 32 .

[0035] Specifically, the initial position relationship between the body 1 and the sieve plate 2 is as follows: Figure 5 As shown in FIG. 1 , as the distance between the body 1 and the sieve plate 2 is shortened, the triangular needle 31 is inserted into the sieve hole 21 and the blocked sediment therein is shredded. When the water pressure is too high, the water flow pushes the sieve plate 2 and the body 1 closer together. Due to the presence of the blade 32, and the outer diameter of the blade 32 is larger than the inner diameter of the narrow part, the blade 32 is always blocked between the sieve plate 2 and the body 1. Figure 6 As shown, the screen plate 2 is prevented from being directly attached to the main body 1, which would reduce the contact area between the main body 1 and the water flow. At the same time, since the blades 32 are spirally arranged and the water flow in the narrow part of the screen hole 21 is faster, the water flow drives the blades 32 to rotate after passing through the narrow part. The blades 32 drive the triangular needles 31 to rotate during the rotation process, which speeds up the cutting and removal efficiency of the sediment blockage and can crush large particles.

[0036] As another embodiment further provided by the present invention, a plurality of slide rails 11 are arranged on the main body 1 along a circumferential array, and the sieve plate 2 is slidably arranged on the slide rails 11 .

[0037] Specifically, the sieve plate 2 approaches the main body 1 along the slide rail 11. The setting of the slide rail 11 makes the moving trajectory of the sieve plate 2 stable. Because a plurality of reset springs 4 are arranged between the sieve plate 2 and the main body 1, when the water pressure decreases, the sieve plate 2 is reset under the elastic action of the reset spring 4. In the process of releasing the elasticity of the spring, the sieve plate 2 is subjected to slight vibration, thereby shaking off the sediment on the sieve plate 2.

[0038] Working principle: The main body 1 is equipped with a filter screen. When the circulating pump is working, water enters the water inlet so that the water pressure directly presses the sieve plate 2. Since the water-facing surface of the sieve plate 2 is concave, the pressure on the sieve plate 2 is concentrated on the central axis, and the water pressure on the sieve plate 2 is more stable. The truncated cone structure of the sieve hole 21 can increase the contact area between the sieve plate 2 and the water flow, amplify the water flow push effect, and when the water flows through the sieve hole 21, the cross-sectional area is reduced, so that the water flow speed in the narrow part of the sieve hole 21 is accelerated; when the solid sediment in the water blocks the sieve hole 21 on the sieve plate 2, the water pressure pushes the sieve plate 2 to slide, and the sieve plate 2 approaches the main body 1 along the slide rail 11. As the distance between the main body 1 and the sieve plate 2 is shortened, the triangular needle 31 is inserted into the sieve hole 21 and the blocked sediment therein is shredded. When the water pressure is too high , the water flow pushes the sieve plate 2 and the body 1 closer. Due to the existence of the blade 32 and the outer diameter of the blade 32 being larger than the inner diameter of the narrow part, the blade 32 is always blocked between the sieve plate 2 and the body 1, preventing the sieve plate 2 from directly sticking to the body 1, resulting in a reduction in the contact area between the body 1 and the water flow. At the same time, since the blade 32 is spirally arranged and the water flow in the narrow part of the sieve hole 21 is faster, the water flow drives the blade 32 to rotate after passing through the narrow part. The blade 32 drives the triangular needle 31 to rotate during the rotation process, thereby accelerating the cutting and removing efficiency of the sediment blockage and crushing large particles. When the water pressure decreases, the sieve plate 2 is reset under the elastic action of the reset spring 4, and in the process of the spring releasing the elasticity, the sieve plate 2 is subjected to a slight oscillation, thereby shaking off the sediment on the sieve plate 2.

[0039] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A desulfurization absorption tower outer alloy filter, characterized in that: include: A body (1) is mounted on the water inlet of a circulating pump; A sieve plate (2) slidably mounted on the body (1), wherein the sieve plate (2) is provided with a plurality of sieve holes (21); A drainage needle (3) is arranged on the body (1) and is plugged into and matched with the sieve hole (21) to eject the obstruction; Wherein: the ends of the body (1) and the screen plate (2) facing the water flow are both concave structures.

2. The alloy filter screen outside the desulfurization absorption tower according to claim 1, characterized in that: The sieve hole (21) is a truncated cone-shaped structure, with the end facing the water flow being a wide portion and the other end opposite thereto being a narrow portion.

3. The alloy filter screen outside the desulfurization absorption tower according to claim 1, characterized in that: The drainage needle (3) comprises a blade (32) rotatably arranged on the body (1) and a triangular needle (31) axially arranged on the blade (32).

4. The alloy filter screen outside the desulfurization absorption tower according to claim 3, characterized in that: The outer diameter of the blade (32) is larger than the inner diameter of the narrow portion of the sieve hole (21).

5. The alloy filter screen outside the desulfurization absorption tower according to claim 1, characterized in that: A plurality of slide rails (11) are arranged in a circumferential array on the body (1), and the sieve plate (2) is slidably arranged on the slide rails (11).

6. The alloy filter screen outside the desulfurization absorption tower according to claim 1, characterized in that: A plurality of return springs (4) are arranged between the sieve plate (2) and the body (1).

Images