Measuring tool for measuring expansion height of filter layer

Abstract

The utility model discloses a measuring tool for measuring the expansion height of a filter layer. The measuring tool comprises a measuring rod and a plurality of measuring discs formed on the measuring rod, the measuring rod comprises a measuring main body and a handle rod for lengthening the end part of the measuring main body, and a plurality of measuring discs are formed on the measuring main body; the plurality of measuring discs are formed on the two opposite sides of the measuring main body, and sunken structures for remaining gravels are formed at the tops of the measuring discs; compared with the prior art, the measuring body is controlled by holding the handle rod by hand, it is ensured that the measuring body is fixed along the surface of the filter layer surface, the filter layer is expanded in the washing process, after washing is completed, sand grains left in the measuring disc are checked, the distance from the highest point of the stone sand grains to the filter layer surface is the expansion height of the filter layer, the overall use is convenient, and the measuring accuracy is high. The filtering layer washing process is not influenced.

Description

Technical Field

[0001] This utility model relates to the field of expansion rate measurement technology, specifically to a measuring tool for measuring the expansion height of a filter layer. Background Technology

[0002] The filter bed expansion rate refers to the degree of expansion of the filter media layer during backwashing. It is usually expressed as a percentage of the filter media layer thickness. When the backwash flow rate is less than the minimum fluidization flow rate, the filter bed does not expand. When the backwash flow rate is greater than the minimum fluidization flow rate, the filter bed expands. At this time, the greater the backwashing intensity, the greater the expansion. When the filter bed expands to a certain extent, it no longer expands. At this time, the filter bed is fully expanded.

[0003] Chinese Patent Publication No. CN219915623U discloses a mortar vertical expansion rate measuring device, which includes a detection device for detecting the vertical expansion rate of mortar installed at the upper end of a support device, and a guide device II for guiding the detection device installed in the middle of the detection device.

[0004] The aforementioned method involves rotating a fixed block to allow a limiting rod to slide within a groove, enabling a dial indicator to perform comprehensive testing of the glass plate. However, the movement of the dial indicator can cause flow within the mortar, thus affecting the testing effect of the filter layer. Utility Model Content

[0005] The present invention aims to overcome the defects in the prior art and provide a measuring tool for measuring the expansion height of a filter layer that is easy to operate and does not affect the detection effect.

[0006] To achieve the above-mentioned utility model objectives, the present utility model adopts the following technical solution: a measuring tool for measuring the expansion height of a filter layer, comprising a measuring rod and a plurality of measuring discs formed on the measuring rod; the measuring rod comprises a measuring body and a handle for extending the end of the measuring body, and a plurality of measuring discs are formed on the measuring body; the plurality of measuring discs are formed on opposite sides of the measuring body, and a sinking structure for retaining sand and gravel is formed on the top of the measuring discs.

[0007] As a preferred embodiment of this utility model, the measuring plate is vertically arranged with the measuring body, a sunken structure is formed in the middle of the measuring plate, and an anti-overflow strip is formed around the outer ring of the measuring plate surrounding the sunken structure.

[0008] As a preferred embodiment of this utility model, several measuring discs are arranged in parallel, and several measuring discs located on the same side of the measuring body are arranged at equal intervals along the length direction of the measuring body.

[0009] As a preferred embodiment of this utility model, a plurality of measuring discs located on both sides of the measuring body are arranged alternately along the length direction of the measuring body.

[0010] In a preferred embodiment of this utility model, a transition connector is formed between the handle rod and the measuring body, and the handle rod, the transition connector and the measuring body are located on the same straight line.

[0011] As a preferred embodiment of this utility model, the handle rod consists of at least two handle support rods, and a transition connector is provided between adjacent handle support rods.

[0012] As a preferred embodiment of the present invention, the transition connector includes a first connecting sleeve, a transition sleeve, and a second connecting sleeve connected in sequence. The first connecting sleeve and the second connecting sleeve are respectively formed at opposite ends of the transition sleeve, and the first connecting sleeve is inserted into the end of the handle rod, and the second connecting sleeve is inserted into the end of the measuring body.

[0013] In a preferred embodiment of this utility model, the cross-sectional dimensions of the first connecting sleeve and the second connecting sleeve are smaller than the cross-sectional dimensions of the transition sleeve.

[0014] As a preferred embodiment of this utility model, a first locking pin is installed on the first connecting sleeve to be inserted into the handle rod, and a second locking pin is installed on the second connecting sleeve to be inserted into the measuring body.

[0015] In a preferred embodiment of this utility model, the first locking pin and the second locking pin are arranged parallel to the measuring disc.

[0016] Compared with the prior art, the beneficial effects of this utility model are: the measuring body is controlled by the hand handle, ensuring that the measuring body is fixed on the surface of the filter layer, and the filter layer expands during the rinsing process. After rinsing, the residual sand particles in the measuring plate are checked. The distance from the highest point of the sand particles to the filter layer is the expansion height of the filter layer. The whole process is convenient to use and does not affect the rinsing process of the filter layer. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0019] Figure 3 This is the front view of this utility model;

[0020] Figure 4 This is an exploded view of this utility model;

[0021] Figure 5This is a structural schematic diagram of the transition connector;

[0022] Figure 6 This is a schematic diagram of the handle support rod;

[0023] Reference numerals: measuring rod 1, measuring disc 2, recessed structure 21, anti-overflow strip 22, measuring body 3, handle rod 4, handle support rod 41, transition connector 5, transition sleeve 51, first connecting sleeve 52, second connecting sleeve 53, first locking pin 54, second locking pin 55. Detailed Implementation

[0024] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0025] like Figures 1-6 As shown, a measuring tool for measuring the expansion height of a filter layer includes a measuring rod 1 and a plurality of measuring discs 2 formed on the measuring rod 1; the measuring rod 1 includes a measuring body 3 and a handle rod 4 for extending the end of the measuring body 3, and a plurality of measuring discs 2 are formed on the measuring body 3; the plurality of measuring discs 2 are formed on opposite sides of the measuring body 3, and a sinking structure 21 for retaining sand and gravel is formed on the top of the measuring discs 2.

[0026] The measuring rod 1 is set vertically, and the number of measuring discs 2 on the measuring rod 1 is set according to actual needs. Several measuring discs 2 are distributed from bottom to top along the height direction of the measuring rod 1. The handle rod 4 is easy for the operator to hold, and the position of the measuring body 3 and the measuring discs 2 is limited by the operator holding the handle rod 4.

[0027] The measuring plate 2 is set vertically to the measuring body 3, the sunken structure 21 is formed in the middle of the measuring plate 2, and the outer ring of the measuring plate 2 is formed with an anti-overflow strip 22 surrounding the sunken structure 21.

[0028] The measuring disc 2 is always in a horizontal position during use, while the measuring body 3 is in a vertical position. The measuring disc 2 is used to load the sand and gravel during the measurement process, while the anti-overflow strip 22 is used to prevent the sand and gravel in the measuring disc 2 from flowing out.

[0029] Several measuring discs 2 are arranged in parallel, and several measuring discs 2 located on the same side of the measuring body 3 are arranged at equal intervals along the length direction of the measuring body 3. Several measuring discs 2 are located at different heights of the vertically set measuring body 3.

[0030] The measuring body 3 can be made of stainless steel, and the measuring disc 2 can be made of stainless steel that is welded and fixed to the measuring body 3, so that several measuring discs 2 can be fixedly set on the measuring body 3 under the action of welding.

[0031] Several measuring discs 2 located on both sides of the measuring body 3 are arranged alternately along the length of the measuring body 3. Under the effect of the alternating arrangement of several measuring discs 2 along the length of the measuring body 3, the spacing between adjacent measuring discs 2 on the same side is ensured, so that the sand and gravel can enter the measuring disc 2 from the adjacent measuring disc 2 on the same side. At the same time, it is ensured that there are corresponding measuring discs 2 at different heights of the measuring body 3, so as to accurately measure the measurement results.

[0032] A transition connector 5 is formed between the handle rod 4 and the measuring body 3. The handle rod 4, the transition connector 5 and the measuring body 3 are located on the same straight line. Under the action of the transition connector 5, the handle rod 4 and the measuring body 3 are detachably connected, so that handle rods 4 of different lengths can be connected to the measuring body 3 to meet the measurement needs of different environments.

[0033] The handle rod 4 consists of at least two handle support rods 41, and a transition connector 5 is provided between adjacent handle support rods 41. The number of handle support rods 41 can be set according to actual needs, so that different lengths of handle rods 4 can be set under the action of different numbers of handle support rods 41.

[0034] The transition connector 5 includes a first connecting sleeve 52, a transition sleeve 51, and a second connecting sleeve 53 connected in sequence. The first connecting sleeve 52 and the second connecting sleeve 53 are respectively formed at opposite ends of the transition sleeve 51. The first connecting sleeve 52 is inserted into the end of the handle rod 4, and the second connecting sleeve 53 is inserted into the end of the measuring body 3.

[0035] The first connecting sleeve 52 and the second connecting sleeve 53 have similar structures to the transition sleeve 51. Both the handle rod 4 and the measuring body 3 are hollow structures. When the first connecting sleeve 52 is inserted into the end of the handle rod 4, the outer wall of the first connecting sleeve 52 abuts against the inner wall of the handle rod 4. Similarly, when the second connecting sleeve 53 is inserted into the end of the measuring body 3, the outer wall of the second connecting sleeve 53 abuts against the inner wall of the measuring body 3.

[0036] The cross-sectional dimensions of the first connecting sleeve 52 and the second connecting sleeve 53 are smaller than those of the transition sleeve 51, which satisfies the requirement that the first connecting sleeve 52 is inserted into the end of the handle rod 4 and the second connecting sleeve 53 is inserted into the end of the measuring body 3.

[0037] A first locking pin 54 is installed on the first connecting sleeve 52 and is inserted into the handle rod 4. A second locking pin 55 is installed on the second connecting sleeve 53 and is inserted into the measuring body 3. The first locking pin 54 passes through both the first connecting sleeve 52 and the handle rod 4, and the end of the first locking pin 54 is provided with a nut for locking the first locking pin 54. Similarly, the second locking pin 55 passes through both the second connecting sleeve 53 and the measuring body 3, and the end of the second locking pin 55 is provided with a nut for locking the second locking pin 55. Under the action of the first locking pin 54 and the second locking pin 55, the connection between the handle rod 4, the transition connector 5 and the measuring body 3 is realized.

[0038] The first locking pin 54 and the second locking pin 55 are set parallel to the measuring disc 2.

[0039] In actual use, after assembling the measuring body 3 with the handle rod 4 via the transition connector 5, the measuring body 3 is placed perpendicular to the filter tank wall inside the filter tank, with the bottom of the measuring body 3 in contact with the filter surface. The position of the measuring body 3 is fixed by holding the handle rod 4. During rinsing, the filter layer expands. After rinsing, the residual sand particles in the measuring disc 2 are checked. The distance from the highest point where the sand particles are found to the filter surface is the filter layer expansion height. The expansion rate is calculated as (filter layer expansion height / filter media height in the tank) * 100%.

[0040] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0041] Although this document frequently uses reference numerals from the figures, such as measuring rod 1, measuring disc 2, recessed structure 21, anti-overflow strip 22, measuring body 3, handle rod 4, handle support rod 41, transition connector 5, transition sleeve 51, first connecting sleeve 52, second connecting sleeve 53, first locking pin 54, and second locking pin 55, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A measuring tool for measuring the expansion height of a filter layer, characterized in that, It includes a measuring rod (1) and a plurality of measuring discs (2) formed on the measuring rod (1); the measuring rod (1) includes a measuring body (3) and a handle rod (4) for extending the end of the measuring body (3), and a plurality of measuring discs (2) are formed on the measuring body (3); the plurality of measuring discs (2) are formed on opposite sides of the measuring body (3), and a sinking structure (21) for leaving gravel is formed on the top of the measuring discs (2).

2. The measuring tool for measuring the expansion height of a filter layer according to claim 1, characterized in that, The measuring plate (2) is set perpendicular to the measuring body (3), the sunken structure (21) is formed in the middle of the measuring plate (2), and the outer ring of the measuring plate (2) is formed with an anti-overflow strip (22) surrounding the sunken structure (21).

3. The measuring tool for measuring the expansion height of a filter layer according to claim 1, characterized in that, Several measuring discs (2) are arranged in parallel, and several measuring discs (2) located on the same side of the measuring body (3) are arranged at equal intervals along the length direction of the measuring body (3).

4. The measuring tool for measuring the expansion height of a filter layer according to claim 3, characterized in that, Several measuring discs (2) located on both sides of the measuring body (3) are arranged alternately along the length of the measuring body (3).

5. A measuring tool for measuring the expansion height of a filter layer according to claim 1, characterized in that, A transition connector (5) is formed between the handle (4) and the measuring body (3), and the handle (4), the transition connector (5) and the measuring body (3) are located on the same straight line.

6. A measuring tool for measuring the expansion height of a filter layer according to claim 5, characterized in that, The handle rod (4) consists of at least two handle support rods (41), and a transition connector (5) is provided between adjacent handle support rods (41).

7. A measuring tool for measuring the expansion height of a filter layer according to claim 5 or 6, characterized in that, The transition connector (5) includes a first connecting sleeve (52), a transition sleeve (51), and a second connecting sleeve (53) connected in sequence. The first connecting sleeve (52) and the second connecting sleeve (53) are respectively formed at opposite ends of the transition sleeve (51), and the first connecting sleeve (52) is inserted into the end of the handle rod (4), and the second connecting sleeve (53) is inserted into the end of the measuring body (3).

8. A measuring tool for measuring the expansion height of a filter layer according to claim 7, characterized in that, The cross-sectional dimensions of the first connecting sleeve (52) and the second connecting sleeve (53) are smaller than the cross-sectional dimensions of the transition sleeve (51).

9. A measuring tool for measuring the expansion height of a filter layer according to claim 7, characterized in that, The first connecting sleeve (52) is equipped with a first locking pin (54) that is inserted into the handle rod (4), and the second connecting sleeve (53) is equipped with a second locking pin (55) that is inserted into the measuring body (3).

10. A measuring tool for measuring the expansion height of a filter layer according to claim 9, characterized in that, The first locking pin (54) and the second locking pin (55) are arranged in parallel with the measuring disc (2).

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