Inward extending type backwashing device

Abstract

The utility model relates to an inward-extending backwashing device, which comprises a tank body, an inlet pipe and an outlet which are arranged on the side surface of the tank body; a through hole is formed in the partition plate, the partition plate is erected in the tank body and divides the tank body into a first cavity and a second cavity, the first cavity is communicated with the inlet pipe, and the second cavity is communicated with the outlet; the filter element is arranged at the lower end of the partition plate and corresponds to the through hole; the backwashing mechanism comprises a backwashing interface arranged at the upper end of the tank body; the first end of the backwashing pipe is communicated with the backwashing interface, and the second end of the backwashing pipe extends into the filter element; the nozzle is arranged on the surface of the part, extending into the filter element, of the backwashing pipe. According to the utility model, a backwashing medium enters the backwashing pipe through the backwashing interface and then is sprayed towards the inner wall of the filter element from the nozzles on the surface of the backwashing pipe, so that all positions on the surface of the filter element can be backwashed as long as the length of the backwashing pipe extending into the filter element is enough, the backwashing effect is improved, the downtime is reduced, and the service life of the filter element is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering devices, in particular to an inwardly extending backwashing device. Background Art

[0002] When a filter with a filter element is used, large particles of impurities in the filter medium will be retained on the surface of the filter element, affecting the subsequent filtering effect and service life of the filter element. In order to ensure the filtering effect of the filter element and extend the service life of the filter element, backwashing is usually performed by reversing the inlet and outlet to wash away the large particles attached to the surface of the filter element, thereby achieving the purpose of backwashing. However, the backwashing effect of this backwashing method is poor, especially the lower end of the filter element is difficult to backwash clean, which leads to an increase in the number of backwashing times, increases the downtime of the filter and reduces the service life of the filter element.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0004] In view of the deficiencies in the prior art, the embodiment of the utility model discloses an inwardly extending backwashing device to solve the problem that the backwashing effect of the filter element is poor, resulting in reduced filtering effect and service life.

[0005] The technical solution adopted by the utility model is as follows:

[0006] An inwardly extending backwash device comprises: a tank body, including: an inlet pipe and an outlet, which are arranged on the side of the tank body, and the inlet pipe is located at the lower end of the outlet pipe; a partition plate, which is provided with a through hole, is erected in the tank body, and divides the tank body into a first cavity and a second cavity, the first cavity is connected to the inlet pipe, and the second cavity is connected to the outlet; a filter element, which is arranged at the lower end of the partition plate and has a position corresponding to the through hole; a backwash mechanism, including: a backwash interface, which is arranged at the upper end of the tank body; a backwash pipe, whose first end is connected to the backwash interface and whose second end extends into the filter element; and a nozzle, which is arranged on the surface of the backwash pipe extending into the filter element.

[0007] A further technical solution is that the backwash mechanism comprises: a backwash connecting pipe, a first end of which is connected to the backwash interface, and a second end of which is connected to the backwash pipe.

[0008] A further technical solution is that the tank body comprises: an upper cover, which is arranged at the upper end of the tank body and connected to the tank body flange; wherein the first end of the backwash pipe is connected to the backwash interface flange.

[0009] A further technical solution is that the backwash connecting pipe comprises: a backflow prevention device, which is arranged in the backwash connecting pipe to prevent the fluid from flowing back to the backwash connecting pipe through the backwash pipe.

[0010] Its further technical solution is that the backwash pipe is a square tube, and the backflow prevention device includes: a baffle, which is hinged to the upper end of the inner wall of the backwash pipe and is gap-matched with the inner wall of the backwash pipe; a block, which is arranged at the lower end of the inner wall of the backwash pipe and corresponds to the position of the baffle; wherein, when the baffle is perpendicular to the backwash pipe, the baffle is close to the backwash interface and abuts against the block.

[0011] A further technical solution is that the backwash interface is arranged vertically, the backwash connecting pipe is arranged horizontally, the backwash pipe is arranged vertically, and the filter element is arranged vertically.

[0012] A further technical solution is that the tank body, partition, filter element and backwash pipe are coaxially arranged.

[0013] A further technical solution is that the tank body comprises: a support leg arranged at the lower end of the tank body.

[0014] The beneficial effects of the embodiments of the present utility model are as follows:

[0015] (1) The internally extending backwash device of the utility model comprises a tank body, a partition, a filter element and a backwash mechanism. The filter element is located at the lower end of the partition. The fluid enters from the outside of the filter element and is discharged from the inside. The backwash interface is passed through the upper end of the tank body, and the backwash interface is connected to the backwash pipe. The backwash pipe is extended into the interior of the filter element. The backwash medium enters the backwash pipe through the backwash interface and is then sprayed toward the inner wall of the filter element from the nozzle on the surface of the backwash pipe. As long as the backwash pipe is extended into the filter element for a sufficient length, backwashing can be ensured to all positions on the surface of the filter element, thereby improving the backwash effect, reducing downtime, and extending the service life of the filter element.

[0016] (ii) Furthermore, a backflow prevention device is provided in the backwash pipe, the backwash pipe is a square pipe, and the backflow prevention device includes a baffle and a block. During backwashing, the backwash medium enters the backwash pipe from the backwash interface, and the backwash medium pushes the baffle to rotate around the hinge to open the backwash pipe. During normal operation, the fluid flows back from the backwash pipe into the backwash pipe, pushing the baffle to rotate around the hinge to abut against the block, closing the backwash pipe to prevent backflow, with a simple structure and good protection for the backwash device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view schematic diagram of the internal structure of the internal extension type backwash device of the utility model.

[0018] Figure 2 for Figure 1 Zoom in on point A.

[0019] In the figure:

[0020] 1. Tank body; 10. Upper cover; 11. Inlet pipe; 12. Outlet pipe; 13. First cavity; 14. Second cavity; 15. Support foot; 2. Partition; 21. Through hole; 3. Filter element; 4. Backwash mechanism; 41. Backwash interface; 42. Backwash connecting pipe; 421. Baffle; 422. Block; 43. Backwash pipe; 44. Nozzle. DETAILED DESCRIPTION

[0021] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0022] In order to make the purpose, technical scheme and advantages of the utility model clearer, the device proposed in the utility model is further described in detail below in combination with the accompanying drawings and specific implementation methods. According to the following description, the advantages and features of the utility model will be clearer. It should be noted that the accompanying drawings adopt a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the implementation method of the utility model. In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, please refer to the accompanying drawings. It should be noted that the structure, proportion, size, etc. illustrated by the accompanying drawings of this specification are only used to match the content disclosed in the specification, so that people familiar with this technology can understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so it has no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that the utility model can produce and the purpose that can be achieved, should still fall within the scope of the technical content disclosed by the utility model.

[0023] First embodiment:

[0024] This embodiment discloses an inwardly extending backwash device.

[0025] Figure 1 FIG. 1 is a front view schematic diagram of the internal structure of the internal extension backwash device of the utility model. Figure 1 As shown, the internally extending backwash device includes a tank body 1, a partition 2, a filter element 3 and a backwash mechanism 4.

[0026] The tank body 1 comprises an inlet pipe 11 and an outlet pipe 12 . The inlet pipe 11 and the outlet pipe 12 are arranged on the side of the tank body 1 , and the inlet pipe 11 is located at the lower end of the outlet pipe 12 .

[0027] The partition 2 is installed in the tank body 1 to separate the tank body 1 into a first cavity 13 and a second cavity 14. Exemplarily, the partition 2 is arranged horizontally, the first cavity 13 is located at the lower end of the second cavity 14, the inlet pipe 11 is connected to the first cavity 13, and the outlet pipe 12 is connected to the second cavity 14. The partition 2 has a through hole 21 in the middle to connect the first cavity 13 and the second cavity 14.

[0028] The filter element 3 is disposed at the lower end of the partition 2, and the position corresponds to the through hole 21. Exemplarily, the filter element 3 is disposed vertically, and the fluid enters the first cavity 13 through the inlet pipe 11. When passing through the filter element 3, large particles of impurities carried in the fluid are retained on the outer surface of the filter element 3.

[0029] The backwash mechanism 4 includes a backwash interface 41, a backwash pipe 43 and a nozzle 44. The backwash interface 41 is arranged at the upper end of the tank body 1. The first end of the backwash pipe 43 is connected to the backwash interface 41, and the second end extends into the filter element 3. The nozzle 44 is arranged on the surface of the backwash pipe 43 extending into the filter element 3. Exemplarily, the backwash interface 41 is arranged vertically, the backwash pipe 43 is arranged vertically and extends to the bottom of the filter element 3, and the nozzle 44 is arranged in an annular manner on the surface of the backwash pipe 43, and the backwash coverage area is large.

[0030] like Figure 1 As shown, further, the tank body 1 includes an upper cover 10, which is arranged at the upper end of the tank body 1 and is flange-connected to the tank body 1. The backwash mechanism 4 includes a backwash pipe 42, a first end of the backwash pipe 42 is flange-connected to the backwash interface 41, and a second end is connected to the backwash pipe 43. The upper cover 10 and the tank body 1, and the backwash pipe 42 and the backwash interface 41 are flange-connected to facilitate the installation and disassembly of the upper cover 10 and the backwash device. The backwash pipe 42 is arranged horizontally to make full use of the space in the second cavity.

[0031] like Figure 1 As shown, further, the tank body 1, the partition plate 2, the filter element 3, and the backwash pipe 43 are coaxially arranged to ensure that the backwash medium inside the filter element 3 is sprayed evenly, and there is enough space outside to backwash out large particles of impurities, which is convenient for production design.

[0032] like Figure 1 As shown, further, the tank body 1 includes a support leg 15, which is arranged at the lower end of the tank body 1 to support the tank body 1.

[0033] In this embodiment, by extending the backwash pipe 43 into the interior of the filter element 3, the backwash medium enters the backwash pipe 43 through the backwash interface 41, and is then sprayed from the nozzle 44 toward the inner wall of the filter element 3. As long as the backwash pipe 43 is sufficiently extended into the filter element 3, it can be ensured that all positions on the surface of the filter element 3 are backwashed, thereby improving the backwash effect, reducing downtime, and extending the service life of the filter element 3.

[0034] Second embodiment:

[0035] Based on the first embodiment, the backwash pipe 42 is further optimized and refined in the second embodiment.

[0036] Figure 2 for Figure 1 Zoom in on point A. Figure 2As shown, a backflow prevention device is provided in the backwash pipe 42, and the backflow prevention device prevents the fluid from flowing back to the backwash pipe 42 through the backwash pipe 43. Exemplarily, the backwash pipe 42 is a square pipe, and the backflow prevention device includes a baffle 421 and a block 422. The baffle 421 is hinged to the upper end of the inner wall of the backwash pipe 42, and is in clearance with the inner wall of the cross section of the backwash pipe 42. The baffle 421 rotates perpendicularly to the front view around the hinge. The block 422 is provided at the lower end of the inner wall of the backwash pipe 42, and its position corresponds to the baffle 421. Among them, when the baffle 421 is perpendicular to the backwash pipe 42, the baffle 421 close to the backwash interface 41 abuts against the block 422.

[0037] Of course, in other embodiments of the present invention, the backflow prevention device may also be a one-way valve, which only needs to be able to prevent backflow in the backwash pipe 42, and the present invention does not impose any further restrictions on this.

[0038] In this embodiment, during backwashing, the backwash medium enters the backwash pipe 42 from the backwash interface 41, and the backwash medium pushes the baffle 421 to rotate around the hinge to open the backwash pipe 42. During normal operation, the fluid flows back from the backwash pipe 43 into the backwash pipe 42, pushing the baffle 421 to rotate around the hinge to abut against the block 422, closing the backwash pipe 42 to prevent backflow, with a simple structure and good protection for the backwash device.

[0039] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0040] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. The internal extension backwash device is characterized by: include: Tank, including: An inlet pipe and an outlet pipe are arranged on the side of the tank body, and the inlet pipe is located at the lower end of the outlet pipe; A partition plate is provided with a through hole, is mounted inside the tank body, and divides the tank body into a first cavity and a second cavity, wherein the first cavity is connected to the inlet pipe, and the second cavity is connected to the outlet pipe; A filter element, disposed at the lower end of the partition plate, and located corresponding to the through hole; Backwash mechanism, including: A backwash interface is arranged at the upper end of the tank body; A backwash pipe, the first end of which is connected to the backwash interface and the second end of which extends into the filter element; The nozzle is arranged on the surface of the backwash pipe extending into the filter element.

2. The inner extension backwash device according to claim 1, characterized in that: The backwash mechanism comprises: a backwash connecting pipe, a first end of which is connected to the backwash interface, and a second end of which is connected to the backwash pipe.

3. The inner extension backwash device according to claim 2, characterized in that: The tank body comprises: An upper cover, arranged at the upper end of the tank body and connected to the tank body flange; Wherein, the first end of the backwash pipe is connected to the backwash interface flange.

4. The inner extension backwash device according to claim 2, characterized in that: The backwash connecting pipe comprises: a backflow preventing device, which is arranged in the backwash connecting pipe and prevents the fluid from flowing back to the backwash connecting pipe through the backwash pipe.

5. The internal extension backwash device according to claim 4, characterized in that: The backwash pipe is a square pipe, and the backflow prevention device includes: A baffle, hinged to the upper end of the inner wall of the backwash pipe, and having a clearance fit with the inner wall of the backwash pipe; A stopper, arranged at the lower end of the inner wall of the backwash pipe, and located corresponding to the baffle; Wherein, when the baffle is perpendicular to the backwash connecting pipe, the side of the baffle close to the backwash interface abuts against the stopper.

6. The inner extension backwash device according to claim 2, characterized in that: The backwash interface is arranged vertically, the backwash connecting pipe is arranged horizontally, the backwash pipe is arranged vertically, and the filter element is arranged vertically.

7. The inner extension backwash device according to claim 6, characterized in that: The tank body, the partition plate, the filter element and the backwash pipe are coaxially arranged.

8. The inner extension backwash device according to claim 1, characterized in that: The tank body comprises: The support leg is arranged at the lower end of the tank body.

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