Adjustable trash rack structure and method

Abstract

The present application belongs to the technical field of trash retaining equipment, and provides an adjustable trash rack structure and method. The adjustable trash rack structure comprises a grid horizontal bar, a grid vertical bar and a rotating body. The grid horizontal bar and the grid vertical bar are fixedly arranged in a horizontal and vertical manner to form a fixed-size primary grid hole. Each rotating body comprises a first rotating shaft and a first rotating bar. The first rotating shaft is arranged on a preset grid horizontal bar or a preset grid vertical bar. The first rotating bar can rotate at any angle around the first rotating shaft to keep the primary grid hole unchanged or to divide the primary grid hole. The trash rack can simultaneously intercept different trash, avoiding the arrangement of multiple trash racks and reducing the engineering construction cost.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of trash rack, in particular to an adjustable trash rack structure and method. BACKGROUND

[0002] The statements in this section merely provide background information related to the present application and do not necessarily constitute the prior art.

[0003] The trash rack is often used at the inlet / outlet of the hydropower station or the sluice, has the effect of intercepting the trash in the water, and plays an important role in filtering harmful floating objects, cleaning the water flow and protecting the safety of the mechanical and electrical equipment. The size and quantity of the floating objects and trash in the water often change with the season and flow, such as a large amount of branches and even garbage carried by the mountain torrents into the river in the rainy season, and less trash in the water in the dry season.

[0004] The grid bars and grid holes of the commonly used trash rack are mostly fixed, that is, the size of the grid hole is not adjustable, but the size and quantity of the floating objects and trash in the water flow often change, and the fixed and unchanged grid hole cannot effectively filter the floating objects and trash. When the grid hole is too small, the trash is accumulated in front of the rack to form an obstacle with water blocking effect, which not only affects the normal passage of the water flow, but also increases the water pressure difference between the front and back of the rack, affects the overall stress of the grid, and even endangers the safety of the trash rack structure. When the grid hole is too large, small trash passes through the grid hole and flows downstream, causing the trash rack to fail to intercept the trash, and the trash passing through the hole further affects the water quality and the safe operation of the mechanical and electrical equipment.

[0005] To solve the above problems, some existing technologies set multiple trash racks, and change the size of the grid hole by changing the relative position of the multiple trash racks, but the multiple trash racks increase the engineering investment, and also increase the maintenance and management work. In addition, most of the technical solutions improved for the single trash rack structure in the prior art include an electric control structure, which is complex on the one hand, and the trash rack structure is in a water environment, which may cause the electric control structure to malfunction, thereby affecting the grid hole adjustment effect of the trash rack structure. SUMMARY

[0006] To solve the technical problems in the background art, the present application provides an adjustable trash rack structure and method, which can simultaneously intercept different trash through one trash rack, avoids setting multiple trash racks, and can reduce the engineering construction cost.

[0007] To achieve the above purpose, the present application adopts the following technical solutions:

[0008] The first aspect of the present application provides an adjustable trash rack structure.

[0009] An adjustable trash rack structure comprises:

[0010] a grid horizontal bar, a grid vertical bar and a rotating body;

[0011] the grid horizontal bar and the grid vertical bar are fixedly arranged in a horizontal and vertical manner to form a primary grid hole with a fixed size;

[0012] each rotating body comprises a first rotating shaft and a first rotating bar, the first rotating shaft is arranged on the grid horizontal bar or the grid vertical bar, and the first rotating bar can rotate at any angle around the first rotating shaft to keep the primary grid hole unchanged or divide the primary grid hole.

[0013] As an embodiment, the first rotating shaft is fixedly arranged, or the first rotating shaft can move along the grid horizontal bar or the grid vertical bar.

[0014] As an embodiment, at least one second rotating shaft and a second rotating bar are arranged on the first rotating bar, the second rotating bar can rotate at any angle around the second rotating shaft to keep the current grid hole unchanged or continue to divide the grid hole.

[0015] As an embodiment, the length of the second rotating bar is adjustable.

[0016] As an embodiment, the length of the first rotating bar is adjustable.

[0017] As an embodiment, one end of the first rotating bar is connected with the free end of the first / second telescopic rod, and the fixed end of the first / second telescopic rod is arranged on the same grid horizontal bar or grid vertical bar as the first rotating shaft.

[0018] As an embodiment, one end of the first rotating bar is connected with the free end of the first telescopic rod and the free end of the second telescopic rod, and the other end of the first rotating bar is vacant; the fixed ends of the first telescopic rod and the second telescopic rod are arranged on the same grid horizontal bar or grid vertical bar; when the fixed ends of the first telescopic rod and the second telescopic rod are kept unchanged, the lengths of the first telescopic rod and the second telescopic rod change with the rotation of the first rotating bar.

[0019] As an embodiment, one end of the first rotating bar is connected with the free end of the first telescopic rod and the free end of the second telescopic rod, and the other end of the first rotating bar is connected with only the free end of the first / second telescopic rod; the fixed ends of all the first telescopic rods and the second telescopic rods are arranged on the same grid horizontal bar or grid vertical bar; when the fixed ends of the first telescopic rod and the second telescopic rod are kept unchanged, the lengths of the first telescopic rod and the second telescopic rod change with the rotation of the first rotating bar.

[0020] As an implementation form, the two ends of the first rotating strip are connected with the free ends of the first telescopic rods and the second telescopic rods at the same time; the first telescopic rods and the second telescopic rods are connected in a head-to-tail mode, and the fixed ends of all the first telescopic rods and the second telescopic rods are arranged on the same grid horizontal strip or grid vertical strip; when the fixed ends of the first telescopic rods and the second telescopic rods remain unchanged, the lengths of the first telescopic rods and the second telescopic rods change with the rotation of the first rotating strip.

[0021] As an implementation form, the first telescopic rods and the second telescopic rods are of the same structure and are each composed of at least three sections of rods, and a matched telescopic sliding groove and a sliding key are arranged between two adjacent sections of rods, so that the sliding key reciprocatingly telescopes along the sliding groove.

[0022] As an implementation form, the two ends of the first rotating strip are respectively provided with first sliding rotating shafts, each of which is connected with a first sliding rod with a fixed length, the two ends of each first sliding rod are respectively provided with second sliding rotating shafts, and a second sliding rod is arranged between the two second sliding rotating shafts of different first sliding rods, and the two second sliding rods are arranged in parallel with the first rotating strip.

[0023] As an implementation form, the second sliding rotating shafts move along corresponding sliding grooves / slide groove boxes arranged on the grid horizontal strips or grid vertical strips.

[0024] The second aspect of the present application provides a working method based on the adjustable trash screen structure.

[0025] A working method based on the adjustable trash screen structure, comprising:

[0026] According to the set requirement, the first rotating strip is rotated to keep the primary grid holes unchanged or to divide the primary grid holes;

[0027] When the first rotating strip overlaps with the grid horizontal strips or the grid vertical strips, the primary grid holes remain unchanged;

[0028] When the first rotating strip intersects with the grid horizontal strips or the grid vertical strips, the primary grid holes are divided into a plurality of secondary grid holes.

[0029] Compared with the prior art, the present application has the following beneficial effects:

[0030] (1) The adjustable trash screen structure provided by the present application utilizes the rotation of the first rotating strip around the first rotating shaft to keep the primary grid holes unchanged or to divide the primary grid holes, realizes the adjustability of the grid holes, and the changes of the density and the number of the grid holes, and comprehensively uses the fixed grid holes and the variable grid holes, which is good for intercepting and filtering different types, different scales and different amounts of pollutants.

[0031] (2) The adjustable trash rack structure of the present invention realizes the function of intercepting different trash at the same time with one trash rack, avoiding the need to set up multiple trash racks, reducing the engineering construction cost, and making it more economical.

[0032] (3) The adjustable trash rack structure of the present invention can be set with one or more sets of rotating bodies, or a telescopic rod structure or a sliding rod structure can be connected on the first rotating bar. It can set first-level grid holes, second-level grid holes or even multi-level grid holes according to needs, realizing one grid with multiple functions. Compared with setting multiple multi-level trash racks, it saves operation and maintenance work and management costs.

[0033] Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0034] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0035] Figure 1 This is a schematic diagram of an adjustable trash rack structure according to Embodiment 1 of the present invention;

[0036] Figure 2 This is a schematic diagram of another adjustable trash rack structure according to Embodiment 1 of the present invention;

[0037] Figure 3 This is a schematic diagram of an adjustable trash rack structure according to Embodiment 5 of the present invention;

[0038] Figure 4 This is a cross-sectional schematic diagram of the telescopic rod assembly according to Embodiment 5 of the present invention;

[0039] Figure 5(a) is Figure 4 Schematic diagram of the first section of the telescopic pole;

[0040] Figure 5(b) is Figure 4 Schematic diagram of the second section of the telescopic pole;

[0041] Figure 5(c) is Figure 4 Schematic diagram of the third section of the telescopic pole;

[0042] Figure 6(a) is a cross-sectional view of the first section of the telescopic rod in Figure 5(a);

[0043] Figure 6(b) is a cross-sectional view of the second section of the telescopic rod in Figure 5(b);

[0044] Figure 6(c) is a cross-sectional view of the third section of the telescopic rod in Figure 5(c);

[0045] Figure 7 is another sectional view of the telescopic rod combination of embodiment 5 of the present application;

[0046] Figure 8(a) is a sectional view of the first section of the corresponding telescopic rod; Figure 7

[0047] Figure 8(b) is a sectional view of the second section of the corresponding telescopic rod; Figure 7

[0048] Figure 8(c) is a sectional view of the third section of the corresponding telescopic rod; Figure 7

[0049] Figure 9(a) is a side view of the first section of the telescopic rod of Figure 8(a);

[0050] Figure 9(b) is a side view of the second section of the telescopic rod of Figure 8(b);

[0051] Figure 9(c) is a side view of the third section of the telescopic rod of Figure 8(c);

[0052] Figure 10 is an adjustable trash rack structure of embodiment 6 of the present application;

[0053] Figure 11 is Figure 10 a movement schematic of the sliding rod in the adjustable trash rack;

[0054] Figure 12 is a perspective view of the sliding groove box of the embodiment of the present application;

[0055] Figure 13 is a side view of the sliding groove of the embodiment of the present application.

[0056] wherein 1 is a grid horizontal bar, 2 is a grid vertical bar, 3 is a rotating body, 4 is a first rotating shaft, 5 is a first rotating bar, 6 is a primary grid hole, 7 is a secondary grid hole, 8 is a second rotating shaft, 9 is a second rotating bar, 10 is a secondary grid hole, 11 is a multi-stage grid hole, 12 is a first telescopic rod, 12-1 is a first section, 12-2 is a second section, 12-3 is a third section, 12-4 is a first telescopic sliding groove, 12-5 is a second sliding key, 12-6 is a third sliding key, 12-7 is a first gap, 12-8 is a second gap, 12-9 is a second telescopic sliding groove, 13 is a second telescopic rod, 14 is a free end, 15 is a fixed end, 16 is a rotating track circle, 17 is a first sliding rod, 18 is a second sliding rod, 19 is a first sliding rotating shaft, 20 is a second sliding rotating shaft, 21 is a sliding groove box, and 22 is a sliding groove. DETAILED DESCRIPTION

[0057] The present application will be further described below in conjunction with the drawings and embodiments.​​​

[0058] It should be noted that the following detailed description is illustrative only, and is intended to provide further description in order to provide a thorough understanding of the present application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the application pertains.

[0059] It is also important to note that the use of the terms "example," "exemplary," "for example," "illustrative," etc. are intended to mean "an instance of" or "e.g., one of a number of potential aspects as provided by the application, and should not necessarily be interpreted as "preferred" or "advantageous" over other potential aspects, unless otherwise specifically noted. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0060] Example 1

[0061] According to Figure 1 , the embodiment provides an adjustable trash rack structure, comprising: a grid horizontal bar 1, a grid vertical bar 2 and a rotating body 3.

[0062] From Figure 1 , it can be seen that the grid horizontal bar 1 and the grid vertical bar 2 are fixedly arranged transversely and longitudinally to form a fixed-size primary grid hole 6. Among them, the grid horizontal bar 1 and the grid vertical bar 2 are processed from steel sheet bar or profile steel with a certain width, and are bolted or welded at the transverse and longitudinal intersection points, so as to form a non-deformable trash rack skeleton system. The primary grid hole 6 has the functions of passing water and blocking trash, and mainly filters and blocks large trash.

[0063] Each rotating body 3 comprises a first rotating shaft 4 and a first rotating bar 5, the first rotating shaft 4 is arranged on a preset grid horizontal bar 1 or a preset grid vertical bar 2, and the first rotating bar 5 can rotate at any angle around the first rotating shaft 4 to keep the primary grid hole 6 unchanged or divide the primary grid hole 6.

[0064] Here it can be understood that the first rotating bar 5 can be arranged transversely or longitudinally, and is processed from a steel sheet bar or a small steel, and the width thereof is equal to or not equal to the width of the grid bar.

[0065] Among them, the length of the first rotating bar 5 is adjustable or fixed, for example, the first rotating bar 5 can also be a telescopic body, which can be telescopic at one end or both ends. The specific implementation structure of the first rotating bar can be specifically arranged according to the needs of those skilled in the art, which will not be described here in detail.

[0066] In some embodiments, the first rotating shaft 4 is fixedly arranged, and the first rotating shaft 4 is a fixed rotating shaft, which is processed from a screw rod or other rod, and connects the rotating bar and the grid bar and can realize the function of rotating in place.

[0067] When the first rotating strip 5 overlaps with the grid horizontal strip 1 or the grid longitudinal strip 2, the trash rack has only the primary grid hole 6;

[0068] When the first rotating strip 5 rotates at an angle with the grid horizontal strip 1 or the grid longitudinal strip 2, the primary grid hole 6 of the trash rack is divided into multiple secondary grid holes 7 by the rotating strip, that is, the secondary grid hole 10 is formed, which can intercept small-sized trash.

[0069] In some other embodiments, the first rotating shaft 4 can move along the grid horizontal strip 1 or the grid longitudinal strip 2.

[0070] It should be noted that when the first rotating shaft 4 can move along the grid horizontal strip or the grid longitudinal strip, the first rotating shaft 4 is a sliding rotating shaft. The sliding rotating shaft can move along a groove which is pre-formed on the grid horizontal strip or the grid longitudinal strip.

[0071] In some other embodiments, in order to avoid the sliding rotating shaft from being pulled out of the groove, the side surface of the sliding rotating shaft is further provided with a protrusion.

[0072] In some other optional embodiments, as shown in Figure 2 The first rotating strip 5 is provided with at least one second rotating shaft 8 and a second rotating strip 9, the second rotating strip 9 can rotate at any angle around the second rotating shaft 8 to keep the current grid hole unchanged or continue to divide the grid hole, so as to form the secondary grid hole 10 or the multi-stage grid hole 11, and realize the adjustable and controllable size of the grid hole.

[0073] In the specific implementation process, the structure and material of the second rotating strip are the same as those of the first rotating strip.

[0074] The length of the second rotating strip 9 can be adjusted (for example, having a telescopic function, such as a telescopic rod) or fixed, which can be specifically set according to the needs of those skilled in the art, and will not be described here.

[0075] The rotating body of the embodiment can be divided into "cross" type, "one" type, multi-stage "one" type rotating body according to the shape, and can be used in combination with multiple groups or multiple types of rotating bodies.

[0076] The working principle of the adjustable trash rack structure of the embodiment is as follows:

[0077] According to the set requirements, the first rotating strip is rotated around the first rotating shaft to keep the primary grid hole unchanged or divide the primary grid hole;

[0078] When the first rotating strip overlaps with the grid horizontal strip or the grid longitudinal strip, the primary grid hole is unchanged;

[0079] When the first rotating strip intersects with the grid horizontal strip or the grid longitudinal strip, the primary grid hole is divided into multiple secondary grid holes.

[0080] Embodiment 2

[0081] This embodiment is based on Embodiment 1, and the free end of the first telescopic rod / second telescopic rod is connected to one end of the first rotating strip, and the fixed end of the first telescopic rod / second telescopic rod is arranged on the same grid horizontal strip or grid vertical strip as the first rotating shaft.

[0082] Embodiment 3

[0083] This embodiment is based on Embodiment 1, and the free end of the first telescopic rod and the free end of the second telescopic rod are simultaneously connected to one end of the first rotating strip, and the other end of the first rotating strip is vacant; the fixed end of the first telescopic rod and the fixed end of the second telescopic rod are both arranged on the same grid horizontal strip or grid vertical strip; when the fixed end of the first telescopic rod and the fixed end of the second telescopic rod remain unchanged, the length of the first telescopic rod and the length of the second telescopic rod both change with the rotation of the first rotating strip.

[0084] Embodiment 4

[0085] This embodiment is based on Embodiment 1, and the free end of the first telescopic rod and the free end of the second telescopic rod are simultaneously connected to one end of the first rotating strip, and the other end of the first rotating strip is only connected to the free end of the first telescopic rod / second telescopic rod; the fixed end of all the first telescopic rods and the fixed end of all the second telescopic rods are arranged on the same grid horizontal strip or grid vertical strip; when the fixed end of the first telescopic rod and the fixed end of the second telescopic rod remain unchanged, the length of the first telescopic rod and the length of the second telescopic rod both change with the rotation of the first rotating strip.

[0086] Among them, Embodiments 2-4 do not give the corresponding schematic, but according to the textual description of Embodiments 2-4, the technical solution description is clear, and those skilled in the art can obtain the corresponding structure according to the related description. Below Figure 3 In the specific implementation process of Embodiment 5, the structures of Embodiments 2-4 are similar to Embodiment 5, and will not be described in detail here.

[0087] Embodiment 5

[0088] As shown in Figure 3 This embodiment is based on Embodiment 1, and the free end of the first telescopic rod and the free end of the second telescopic rod are simultaneously connected to one end of the first rotating strip, and the other end of the first rotating strip is only connected to the free end of the first telescopic rod / second telescopic rod; the fixed end of all the first telescopic rods and the fixed end of all the second telescopic rods are arranged on the same grid horizontal strip or grid vertical strip; when the fixed end of the first telescopic rod and the fixed end of the second telescopic rod remain unchanged, the length of the first telescopic rod and the length of the second telescopic rod both change with the rotation of the first rotating strip.

[0089] In Embodiments 2-5, the first telescopic rod and the second telescopic rod have the same structure, each of which is composed of at least three sections, and a matching telescopic sliding groove and sliding key are arranged between two adjacent sections, so that the sliding key reciprocatingly telescopes along the sliding groove.

[0090] The specific structure of the telescopic rod will be described in detail below by taking the first telescopic rod as an example.

[0091] As shown in Figure 4 As shown in Fig. 6(c), the first telescopic rod 12 is composed of a first section 12-1, a second section 12-2 and a third section 12-3, which are processed from a section steel and have a certain projection width. A first telescopic sliding groove 12-4 is arranged in the first section 12-1 of the first telescopic rod, a second telescopic sliding groove 12-9 and a second sliding key 12-5 are arranged in the second section 12-2 of the telescopic rod, and a third sliding key 12-6 is arranged in the third section 12-3 of the first telescopic rod. When the first telescopic rod telescopes, the sliding key reciprocatingly telescopes along the sliding groove, and the sliding key is ensured not to be separated from the sliding groove. Gaps are arranged between the sections to realize the telescopic sections to telescopically move freely within limits. The second telescopic rod and the third telescopic rod are similar to the first telescopic rod.

[0092] As shown in Figure 7 As shown in Fig. 9(c), another sectional view of the telescopic rod combination is given, in which the first telescopic rod is realized by a steel pipe and has a certain projection width. The second telescopic rod and the third telescopic rod are similar to the first telescopic rod, and will not be described in detail here.

[0093] The working principle of the adjustable trash rack structure of Embodiments 2-5 is as follows:

[0094] When the rotating strip rotates, the telescopic rod telescopes by moving the rotating shaft, and the telescopic rod rotates around the fixed rotating shaft. When the first telescopic rod is elongated, the second telescopic rod is correspondingly shortened, and vice versa. Meanwhile, the rotating strip, the first telescopic rod, the second telescopic rod, the grid horizontal strip and the grid vertical strip form secondary grid holes of different sizes. When the angle of the rotating strip is different, the size and distribution of the secondary grid holes are also different, that is, different secondary grid holes can be adjusted according to needs.

[0095] Embodiment 6

[0096] This embodiment is based on Embodiment 1, as shown in Figure 10 and Figure 11As shown, two ends of the first rotating strip 5 are respectively provided with first sliding rotating shafts 19, and each first sliding rotating shaft 19 is connected with a first sliding rod 17 with fixed length, and two ends of each first sliding rod 17 are respectively provided with second sliding rotating shafts 20, and two second sliding rotating shafts 20 arranged on different first sliding rods 17 are connected with a second sliding rod 18, and the two second sliding rods 18 are arranged in parallel with the first rotating strip 5.

[0097] Wherein, the second sliding rotating shaft 20 and the first rotating shaft 4 are arranged on the same grid horizontal strip 1 or grid vertical strip 2.

[0098] In other optional embodiments, the second sliding rotating shaft 20 can also be not connected with the grid horizontal strip 1 and the grid vertical strip 2, at this time, no sliding groove or sliding groove box is arranged, and the sliding body is driven to slide by the rotating body.

[0099] In the embodiment, the first sliding rod 17 and the second sliding rod 18 are processed by steel bar or section steel, and have a certain projection width.

[0100] As shown, Figure 12-13 The second sliding rotating shaft 20 moves along the corresponding sliding groove 22 / sliding groove box 21. Wherein, the sliding groove 22 is pre-opened on the grid strip (such as the grid horizontal strip 1 or the grid vertical strip 2), and the sliding groove box 21 is additionally fixed on the grid strip (such as the grid horizontal strip 1 or the grid vertical strip 2). The sliding groove / sliding groove box of the embodiment can ensure that the sliding rotating shaft reciprocates in it without falling off.

[0101] The working principle of the adjustable trash rack structure of the embodiment is as follows:

[0102] When the first rotating strip rotates, the first sliding rotating shaft at the end of the first rotating strip drives the sliding rod to move, and the second sliding rotating shaft end of the sliding rod connected with each other slides along the grid horizontal strip or the grid vertical strip, when the first sliding rotating shaft at both ends of the first rotating strip rotates along the rotating track circle, the first rotating strip, the first sliding rod, the second sliding rod, the grid horizontal strip and the grid vertical strip form two-stage grid holes with different sizes. When the angle of the first rotating strip is different, the size and distribution of the two-stage grid holes are also different, that is, different two-stage grid holes can be adjusted according to the needs.

[0103] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An adjustable trash rack structure, characterized by, Comprising: lattice horizontal bars, lattice vertical bars and rotating bodies; lattice horizontal bars and lattice vertical bars are fixedly arranged in horizontal and vertical directions to form primary lattice holes with fixed size; each rotating body comprises a first rotating shaft and a first rotating bar, the first rotating shaft is arranged on a lattice horizontal bar or a lattice vertical bar, and the first rotating bar can rotate by any angle around the first rotating shaft to keep the primary lattice hole unchanged or to divide the primary lattice hole; one end of the first rotating bar is connected with the free end of a first telescopic rod / second telescopic rod, and the fixed end of the first telescopic rod / second telescopic rod is on the same lattice horizontal bar or lattice vertical bar as the first rotating shaft; or one end of the first rotating bar is connected with the free end of a first telescopic rod and a second telescopic rod, and the other end of the first rotating bar is vacant; the fixed ends of the first telescopic rod and the second telescopic rod are arranged on the same lattice horizontal bar or lattice vertical bar; when the fixed ends of the first telescopic rod and the second telescopic rod remain unchanged, the lengths of the first telescopic rod and the second telescopic rod change with the rotation of the first rotating bar; or one end of the first rotating bar is connected with the free end of a first telescopic rod and a second telescopic rod, and the other end of the first rotating bar is connected with the free end of the first telescopic rod / second telescopic rod; the fixed ends of all the first telescopic rods and the second telescopic rods are arranged on the same lattice horizontal bar or lattice vertical bar; when the fixed ends of the first telescopic rod and the second telescopic rod remain unchanged, the lengths of the first telescopic rod and the second telescopic rod change with the rotation of the first rotating bar; or both ends of the first rotating bar are connected with the free ends of the first telescopic rod and the second telescopic rod; the first telescopic rod and the second telescopic rod are connected in head-to-tail manner, and the fixed ends of all the first telescopic rods and the second telescopic rods are arranged on the same lattice horizontal bar or lattice vertical bar; when the fixed ends of the first telescopic rod and the second telescopic rod remain unchanged, the lengths of the first telescopic rod and the second telescopic rod change with the rotation of the first rotating bar.

2. The adjustable trash rack structure of claim 1, wherein, The position of the first rotating shaft is fixed, or the first rotating shaft can move along the lattice horizontal bar or the lattice vertical bar.

3. The adjustable trash rack structure of claim 1 or 2, wherein, At least one second rotating shaft and a second rotating bar are arranged on the first rotating bar, and the second rotating bar can rotate by any angle around the second rotating shaft to keep the current lattice hole unchanged or to continue dividing the lattice hole.

4. The adjustable trash rack structure of claim 3, wherein, The length of the second rotating bar is adjustable.

5. The adjustable trash rack structure of claim 1, wherein, The length of the first rotating bar is adjustable.

6. The adjustable trash rack structure of claim 1, wherein, The first telescopic rod and the second telescopic rod have the same structure and are each composed of at least three sections of rods, and a matching telescopic sliding groove and a sliding key are arranged between two adjacent sections of rods, so that the sliding key reciprocatingly telescopes along the sliding groove.

7. An adjustable trash rack structure characterized by, Comprising: lattice horizontal bars, lattice vertical bars and rotating bodies; lattice horizontal bars and lattice vertical bars are fixedly arranged in horizontal and vertical directions to form primary lattice holes with fixed size; each rotating body comprises a first rotating shaft and a first rotating bar, the first rotating shaft is arranged on a lattice horizontal bar or a lattice vertical bar, and the first rotating bar can rotate by any angle around the first rotating shaft to keep the primary lattice hole unchanged or to divide the primary lattice hole; Two ends of the first rotating strip are respectively provided with first sliding rotating shafts, and a first sliding rod with a fixed length is connected to each first sliding rotating shaft. Two ends of each first sliding rod are respectively provided with second sliding rotating shafts, and second sliding rods are connected between two second sliding rotating shafts of different first sliding rods, and the two second sliding rods are parallel to the first rotating strip.

8. The adjustable trash rack structure of claim 7, wherein, The second sliding rotating shafts move along corresponding sliding grooves / slot boxes, and the sliding grooves / slot boxes are arranged on the grid horizontal strips or the grid vertical strips.

9. A method of operation based on the adjustable trash screen structure according to any one of claims 1-8, characterized in that, Comprise: According to the set requirements, rotate the first rotating strip to keep the primary grid holes unchanged or divide the primary grid holes; When the first rotating strip overlaps with the grid horizontal strips or the grid vertical strips, the primary grid holes remain unchanged; When the first rotating strip intersects with the grid horizontal strips or the grid vertical strips, the primary grid holes are divided into multiple secondary grid holes.

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