Tight sand sweeping prevention filtering structure

Abstract

The utility model discloses a tight sand return prevention filter structure which comprises an inverted filter plate, the upper surface of the inverted filter plate is provided with not less than two groups of filter holes, each filter hole is fixedly provided with a threaded connection seat on the upper surface of the inverted filter plate, the inner wall of each threaded connection seat is provided with an internal thread, each threaded connection seat is provided with an inverted filter pipe, and the inverted filter pipe is provided with a plurality of filter holes. According to the utility model, the inverted filter tube is in threaded connection with the inverted filter plate, and the bottom of the inverted filter tube can be wrapped and connected through the threaded connection seat, so that the connection sealing performance between the tube body and the plate body can be effectively improved through the wrapped threaded connection; the tightness after connection is higher, no connection gap is formed, so that sand sweeping of water through the gap during use can be effectively avoided, the overall filtering effect is improved, the threaded connection mode has threaded disassembly and assembly separability, and the assembly and disassembly work between the pipe body and the plate body can be extremely conveniently completed.

Description

Technical Field

[0001] The utility model relates to the technical field of river water conservancy projects, in particular to a tight anti-backwashing sand filtering structure. Background Technique

[0002] When carrying out river regulation work, anti-filter and filtering structures are often used. Most of the anti-filter and filtering structures are composed of anti-filter pipes and anti-filter plates. When the traditional anti-filter pipes and anti-filter plates are used, the pipe body is directly installed on the plate body. During the long-term erosion by water, gaps are likely to appear at the joints, the connection tightness is reduced, and sand backwashing is likely to occur between the gaps, affecting the filtering effect. Therefore, the utility model proposes a tight anti-backwashing sand filtering structure. Content of the Utility Model

[0003] The purpose of the utility model is to provide a tight anti-backwashing sand filtering structure to solve the problems raised in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solution: a tight anti-backwashing sand filtering structure, including an anti-filter plate, on the upper surface of the anti-filter plate, there are provided no less than two groups of filter holes, and on each filter hole and on the upper surface of the anti-filter plate, a threaded connection seat is fixedly installed. An internal thread part is arranged on the inner wall of the threaded connection seat, and an anti-filter pipe is arranged on the threaded connection seat. A threaded connection member is fixedly installed on the bottom lower surface of the anti-filter pipe, and an external thread part adapted to the internal thread part is arranged on the outer wall of the threaded connection member.

[0005] Preferably, both the anti-filter pipe and the threaded connection member are designed with a hollow structure inside, and the inside of the anti-filter pipe and the threaded connection member communicate with each other.

[0006] Preferably, a sand guiding inner cylinder is fixedly installed inside the anti-filter pipe.

[0007] Preferably, the outer shape of the sand guiding inner cylinder is designed in a conical structure, and the diameter of the sand guiding inner cylinder is larger at the top and smaller at the bottom.

[0008] Preferably, the height of the threaded connection seat is the same as the length of the threaded connection member.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] By threadedly connecting the anti-filter pipe and the anti-filter plate, this method can wrap and connect the bottom of the anti-filter pipe through the threaded connection seat. In this way, the connection tightness between the pipe body and the plate body can be effectively improved through the wrapped threaded connection, and the tightness after connection is higher, and no connection gap will appear. Therefore, it can effectively prevent sand from flowing back through the gap during use and improve the overall filtering effect;

[0011] The threaded connection method has the characteristics of easy disassembly and assembly. It is extremely convenient to complete the assembly and disassembly between the pipe body and the plate body. Therefore, during use, when the plate body or the pipe body is damaged, only the corresponding damaged parts need to be disassembled and new parts replaced, without the need for overall structural replacement, improving the utilization efficiency of the remaining pipe bodies or plate bodies, reducing maintenance and repair costs, and having good use effects and excellent structural performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 Schematic structural diagram of the connection state between the filter plate and the filter pipe according to an embodiment of the present invention;

[0013] Figure 2 Schematic structural diagram of the separated state between the filter plate and the filter pipe according to an embodiment of the present invention;

[0014] Figure 3 Schematic top view of the interior of the filter pipe according to an embodiment of the present invention;

[0015] Figure 4 Schematic cross-sectional view of the interior of the filter pipe according to an embodiment of the present invention.

[0016] In the figure: 1, filter plate; 2, threaded connection seat; 3, internal threaded part; 4, filter pipe; 5, threaded connector; 6, sand guide inner cylinder. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0019] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "provided with", "connection", etc. shall be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0020] Please refer to Figures 1-4 , an embodiment provided by the present utility model: a tight anti-backflow sand filtration structure, including an anti-filter plate 1. The upper surface of the anti-filter plate 1 is provided with no less than two groups of filter holes. Each filter hole and on the upper surface of the anti-filter plate 1 is fixedly installed with a threaded connection seat 2. An internal thread portion 3 is provided on the inner wall of the threaded connection seat 2. An anti-filter pipe 4 is provided on the threaded connection seat 2. A threaded connector 5 is fixedly installed on the bottom lower surface of the anti-filter pipe 4. An external thread portion adapted to the internal thread portion 3 is provided on the outer wall of the threaded connector 5;

[0021] Furthermore, in order to ensure the normal use of the anti-filter pipe 4, both the anti-filter pipe 4 and the threaded connector 5 are designed with a hollow structure inside, and the inside of the anti-filter pipe 4 and the threaded connector 5 communicate with each other;

[0022] Among them, in order to improve the structural adaptability between the threaded connection seat 2 and the threaded connector 5, the height of the threaded connection seat 2 is the same as the length of the threaded connector 5;

[0023] According to the above structure, when it is necessary to install and combine the anti-filter pipe 4 and the anti-filter plate 1, the threaded connector 5 of the anti-filter pipe 4 can be aligned with the threaded connection seat 2 on the anti-filter plate 1, and then the threaded connector 5 is inserted into the threaded connection seat 2 and rotated to complete the threaded connection work between the anti-filter plate 1 and the anti-filter pipe 4.

[0024] In this embodiment, specifically referring to the attached drawings of the specification Figure 3 and Figure 4 as shown, a sand guiding inner cylinder 6 is fixedly installed inside the anti-filter pipe 4; among them, the outer shape of the sand guiding inner cylinder 6 is designed in a conical structure, and the diameter of the sand guiding inner cylinder 6 is larger at the top and smaller at the bottom;

[0025] In actual use, a filter screen can be installed at the bottom end of the sand guiding inner cylinder 6 to complete the sand body filtering work of the anti-filter pipe 4;

[0026] The conical structure design of the sand guiding inner cylinder 6 can effectively conduct the sand body in a conical shape, improve the water body diversion effect, and has good use performance.

[0027] Working principle: Before use, several filter tubes 4 are respectively assembled on the filter plate 1. When the filter tube 4 and the filter plate 1 are assembled, the threaded connector 5 of the filter tube 4 can be aligned with the threaded connection seat 2 on the filter plate 1, and then the threaded connector 5 is inserted into the threaded connection seat 2 and rotated to complete the threaded connection between the filter plate 1 and the filter tube 4;

[0028] This can ensure the normal use effect of the filtering structure of the present utility model;

[0029] In the present utility model, the filter tube and the filter plate are threadedly connected. In this way, the bottom of the filter tube can be wrapped and connected through the threaded connection seat. Through the wrapped threaded connection, the connection sealing performance between the tube body and the plate body can be effectively improved, and the tightness after connection is higher, without connection gaps, so as to effectively avoid water body backwashing sand through the gaps during use and improve the overall filtering effect;

[0030] Moreover, the threaded connection method has the property of threaded disassembly and separation, and can extremely conveniently complete the assembly and disassembly of the tube body and the plate body. Therefore, during use, when the plate body or the tube body is damaged, only the corresponding damaged part needs to be disassembled and a new part is replaced, without the need for overall structure replacement, improving the utilization efficiency of the remaining tube body or plate body, reducing the maintenance and repair costs, having a good use effect, and excellent structural use performance;

[0031] And a sand guiding inner cylinder 6 is fixedly installed inside the filter tube 4 of the present utility model. The conical structure design of the sand guiding inner cylinder 6 can effectively conduct conical sand guiding and water guiding work on the sand from top to bottom, improving the water body guiding effect and having good use performance.

[0032] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A compact anti-sand backflow filtering structure, comprising a filter plate (1), characterized in that: The upper surface of the filter plate (1) is provided with filter holes of a number not less than two groups, each filter hole being located on the upper surface of the filter plate (1) and being fixedly mounted with a threaded connection seat (2), an inner wall of the threaded connection seat (2) being provided with an internal threaded portion (3), a filter tube (4) being provided on the threaded connection seat (2), a threaded connection piece (5) being fixedly mounted on the lower surface of the bottom end of the filter tube (4), and an outer wall of the threaded connection piece (5) being provided with an external threaded portion matching the internal threaded portion (3).

2. A compact anti-sand backflow filtering structure according to claim 1, characterized in that: The interiors of the filter tube (4) and the threaded connector (5) are both designed as hollow structures, and the interiors of the filter tube (4) and the threaded connector (5) are interconnected.

3. A compact anti-sand backflow filtering structure according to claim 1, characterized in that: A sand guiding inner cylinder (6) is fixedly installed inside the reverse filter tube (4).

4. A compact anti-sand backflow filtering structure according to claim 3, characterized in that: The outer shape of the sand guiding inner cylinder (6) adopts a conical structure design, and the diameter of the sand guiding inner cylinder (6) is larger at the top and smaller at the bottom.

5. A compact anti-sand backflow filtering structure according to claim 1, characterized in that: The height of the threaded connection seat (2) is the same as the length of the threaded connection piece (5).

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