A filter tank

Abstract

The present invention relates to a filter tank. The filter tank comprises a tank body and a filter material layer filled in the tank body, a supporting layer located below the filter material layer and a filter brick layer buried in the supporting layer, the filter brick layer comprises a large number of arranged filter bricks, a vertically extending fixed rod is provided at the bottom of the tank body, a supporting structure is installed on at least part of the fixed rod, and a clamping structure is installed on at least part of the fixed rod, the supporting structure is installed on the fixed rod so as to be adjustable up and down, and the filter bricks of the filter brick layer are clamped and fixed by the supporting structure and the clamping structure. The clamping structure and the supporting structure in the present invention can adjust the relative height relative to the fixed rod, so that the height of each filter brick when being fixed can be adjusted, so that the flatness of the filter brick layer can be improved to achieve more uniform air and water distribution, and there is no need to lay cement mortar, which saves the time of waiting for its solidification and reduces the construction period, and the clamping structure and the supporting structure are both detachable and fixed, which makes it easier to repair and replace in the later stage.

Description

Technical Field

[0001] The invention relates to a filter tank. Background Art

[0002] The cross-section of the plastic filter bricks currently used is generally rectangular, and the installation method is to lay a cement mortar leveling layer on the bottom of the filter brick, and then lay the filter bricks. When laying, there is a gap of 5cm-15cm between each adjacent filter brick, and finally fill the gap between the filter bricks with cement mortar. This installation and laying method requires waiting for the cement mortar to solidify before continuing the next step. The construction period is long. After the filter bricks and cement mortar are cast as one, the later maintenance and replacement are complicated. In addition, since the flatness of the filter brick layer will directly affect the uniformity of its air and water distribution, the filter tank has high requirements for the flatness of the filter brick layer. However, when laying the filter brick layer in the existing method, the flatness of the filter brick layer depends entirely on the flatness of the leveling layer, and it is not easy to adjust the flatness of the filter brick layer after laying the filter brick layer, resulting in poor uniformity of air and water distribution in the filter brick layer. Summary of the invention

[0003] The object of the present invention is to provide a filter tank to solve the problems in the prior art that the flatness of filter bricks is difficult to adjust during laying and that filter bricks are difficult to replace and repair later.

[0004] To achieve the above object, the technical solution of the filter tank of the present invention is:

[0005] A filter tank comprises a tank body and a filter material layer filled in the tank body, a supporting layer located below the filter material layer and a filter brick layer buried in the supporting layer, wherein the filter brick layer comprises a large number of arranged filter bricks, a vertically extending fixing rod is arranged at the bottom of the tank body, a supporting structure is installed on at least part of the fixing rods, and a clamping structure is installed on at least part of the fixing rods, the supporting structure is installed on the fixing rods in an adjustable manner up and down, and the filter bricks of the filter brick layer are clamped and fixed by the supporting structure and the clamping structure.

[0006] The beneficial effect of the filter tank of the present invention is that the filter bricks in the filter tank of the present invention are fixed by a clamping structure and a supporting structure installed on a fixing rod, and the supporting structure can adjust the relative height relative to the fixing rod. For the filter bricks, the height of each filter brick when being fixed can be adjusted by adjusting the clamping structure and the supporting structure on different fixing rods, which is convenient for adjusting all filter bricks to the same height, thereby improving the flatness of the filter brick layer to achieve more uniform air and water distribution, and since this method does not require laying cement mortar, it saves the time of waiting for it to solidify, thereby also reducing the construction period, and the clamping structure and the supporting structure are both detachable and fixed. During later maintenance and replacement, it is only necessary to remove the filter material layer and the supporting layer above the filter brick, and then remove the clamping structure to replace the filter brick, which makes replacement simpler.

[0007] Furthermore, each filter brick is supported by at least two supporting structures in the length direction. After the filter brick is supported by at least two supporting structures, the front and rear inclination of a single filter brick can be adjusted by adjusting the relative height of the two supporting structures, thereby further adjusting the flatness of the filter tank.

[0008] Furthermore, the fixing rods are both provided with the pressing structure and the supporting structure, which can clamp and fix the filter bricks more stably, and can reduce the number of fixing rods, the pressing structure and the supporting structure, so as to facilitate installation.

[0009] Furthermore, each filter brick is supported by four supporting structures and compressed by four pressing structures, and the four supporting structures and the four pressing structures correspond to the four corners of the filter brick respectively. The supporting structures and the pressing structures are arranged at the four corners to fix the filter brick more stably and the force on the filter brick is more even.

[0010] Furthermore, the fixing rods are arranged on both sides of the filter brick in the width direction. Since the fixing rods are located on both sides of the filter brick, the water and air distribution of the filter brick will not be affected.

[0011] Furthermore, in the filter brick layer, the filter bricks arranged continuously along the length direction of the filter bricks are a row of filter bricks, the pressing structure on the fixing rod between two adjacent rows of filter bricks simultaneously presses the corresponding filter bricks in the two rows, and the supporting structure on the fixing rod between two adjacent rows of filter bricks simultaneously supports the corresponding filter bricks in the two rows. The pressing structure and the supporting structure correspondingly fix the two rows of filter bricks, which can reduce the number of fixing rods and is also convenient for installation.

[0012] Furthermore, the upper part of the filter brick has symmetrically arranged inclined surfaces on both sides in the width direction, so that the upper part of the filter brick has a ridge-shaped structure, and the pressing structure has a pressing inclined surface adapted to the relative inclined surfaces of the corresponding filter bricks in the two rows. After the inclined surface is arranged on the top of the filter brick, the air and water distribution is more uniform, and the pressing inclined surface is arranged to press down the inclined surface on the top of the filter brick, so that the contact area is larger and the fixation is more stable. In addition, under the pressing of the inclined surfaces on both sides of the filter brick, it is also convenient to arrange the filter brick at a position centered on the fixing rods on both sides.

[0013] Furthermore, the fixing rod is a screw rod, and the clamping structure includes an upper clamping plate and an upper clamping seat. The upper clamping seat is located below the upper clamping plate, and the upper clamping plate is locked by a locking nut. The two opposite sides of the upper clamping seat are clamping inclined surfaces. The upper clamping seat is provided with a clamping inclined surface for clamping the filter brick, and then the upper clamping seat is clamped by the upper clamping plate, and finally locked by a locking nut. Multiple components are provided to make the clamping structure more stable.

[0014] Furthermore, the fixing rod is a screw rod, the supporting structure includes a lower support plate and a locking nut, and the lower pressing plate is fixed by the locking nuts located on the upper and lower sides of the lower support plate. The locking structure of the lower support plate by the locking nut is simple and easy to install.

[0015] Furthermore, the support material of the support layer is filled below the filter brick layer. Filling the support material of the support layer below the filter brick layer to support the filter bricks can make the filter tank structure more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic plan view of the filter tank of the present invention;

[0017] Figure 2 for Figure 1 A-axis sectional view;

[0018] Figure 3 for Figure 1 Middle B-direction sectional view;

[0019] Figure 4 for Figure 3 Enlarged view of the middle filter brick;

[0020] Figure 5 Schematic diagram of filter brick structure;

[0021] Explanation of the reference numerals: 1-tank body; 2-filter material layer; 3-supporting layer; 4-filter brick; 41-bottom surface; 42-vertical surface; 43-inclined surface; 44-backwash hole; 45-reinforcing rib; 5-backwash water inlet pipe; 6-backwash air inlet pipe; 71-screw; 72-upper clamp; 73-upper pressure plate; 74-lower support plate; 75-locking nut. DETAILED DESCRIPTION

[0022] The embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0023] The specific embodiment of the filter tank of the present invention is as follows Figures 1 to 3 As shown, the filter tank includes a tank body 1 and a filter material layer 2 arranged in the tank body 1, a supporting layer 3 located below the filter material layer 2 and filter bricks 4 buried in the supporting layer 3. The filter brick layer is composed of filter bricks 4 arranged in an array. The filter bricks 4 continuously arranged along the length direction of the filter bricks 4 form a row, and adjacent rows are arranged at intervals.

[0024] A backwash channel is also provided below the filter brick layer, and a cover plate is provided on the top of the backwash channel. A backwash water inlet pipe 5 and a backwash air inlet pipe 6 are arranged in the backwash channel. The backwash water inlet pipe 5 and the backwash air inlet pipe 6 are connected with a water inlet branch pipe and an air inlet branch pipe. The water inlet branch pipe and the air inlet branch pipe extend upward, pass through the cover plate and then extend into each row of filter bricks, so as to realize water and air intake of each row of filter bricks, and at the same time prevent the material of the supporting layer from falling into the backwash channel.

[0025] like Figure 5As shown, the filter brick 4 in this embodiment is a cylindrical structure, the middle cavity is used to pass backwashing gas and backwashing holes, and five side surfaces are distributed around the length direction of the filter brick 4, namely, the bottom surface 41, two vertical surfaces 42 and two inclined surfaces 43. The bottom surface 41 of the filter brick 4 is arranged horizontally, the two vertical surfaces 42 are perpendicular to the bottom surface 41, and the two inclined surfaces 43 are arranged upwardly, so that the middle part of the top of the filter brick is higher than the two sides. The filter brick 4 is provided with backwashing holes 44 on the two inclined surfaces 43 and the bottom surface 41 for backwashing. Since the filter brick 4 is buried in the supporting layer 3, the filter brick 4 is arranged around the filter brick 4 for supporting materials. In addition to the inclined surface 43 on the top of the filter brick 4, which can disperse the backwashing water and backwashing gas to the two sides of the filter brick 4 for washing, some backwashing water will flow out through the backwashing holes 44 at the bottom, flow out from the bottom of the filter brick 4, and flow upward through the gaps between the filter bricks 4, washing the supporting materials at the bottom of the filter brick 4 and in the gaps, and distributing water and air more evenly. In order to enhance the structural strength of the filter brick, the outer peripheral surface of the filter brick is surrounded by reinforcing ribs 45. In other embodiments, backwashing holes may be provided only on the two inclined surfaces and the two vertical surfaces.

[0026] like Figure 3 and Figure 4 As shown, the fixing device in this embodiment includes a vertical screw rod 71 arranged at the bottom of the pool body 1, and the screw rod 71 is located in the interval between adjacent groups of filter bricks. Each screw rod 71 is provided with a clamping structure for clamping the filter brick 4 and a supporting structure for supporting the filter brick 4. Specifically, the clamping structure includes an upper pressure plate 73, an upper clamping seat 72 located below the upper pressure plate 73 and a locking nut 75 for locking. The supporting structure includes a lower support plate 74 and a locking nut 75 for locking the lower support plate 74. By screwing the locking nut 75 to adjust the height of the lower support plate 74 on the screw rod, the posture and height of the filter brick 4 can be adjusted, thereby adjusting the flatness of the filter brick layer. The upper clamping seat 72 and the upper pressure plate 73 above the filter brick 4 are used to press the filter brick 4 on the supporting structure, thereby fixing the filter brick 4.

[0027] Since the top of the filter brick 4 in this embodiment is two inclined slopes 43, the upper clamping seat 72 in the clamping structure is a quadrangular prism structure, the edges of which extend along the length direction of the filter brick 4, and the sides located on both sides of the screw 71 are parallel to the slope 43 on the top of the filter brick 4 and press down the slope 43, and these two sides are clamping slopes, and the upper clamping seat 72 is fixed by the upper pressing plate 73 and the locking nut 75, and each side of the filter brick 4 is clamped and fixed between the clamping structure and the supporting structure by two screws 71, and except for the outermost screw 71 in the width direction of the filter brick, each screw 71 can fix the filter bricks 4 on both sides, reducing the number of screws 71 and making the installation simpler. In other embodiments, the upper clamping seat may no longer be provided, and a clamping slope may be provided at the bottom of the upper pressing plate. In other embodiments, the filter brick with a flat top may also be clamped and fixed only by the upper pressing plate.

[0028] In other embodiments, the screw in the fixing device can also pass through the middle of the filter brick and be fixed by the upper pressure plate and the lower support plate. At this time, a single filter brick can be fixed by at least one screw. Of course, two screws can also be set and the two ends of the filter brick can be fixed by the clamping structure and the supporting structure on the screw.

[0029] In other embodiments, three screws may be provided on each side of the filter brick, the screws at both ends are only provided with supporting structures for support, and the screws in the middle are only provided with pressing structures for pressing the filter brick.

[0030] In other embodiments, two rows of screws may be provided in the intervals between adjacent groups of filter bricks to fix the filter bricks on the corresponding side respectively.

[0031] In other embodiments, there is no need to lay materials for supporting the filter bricks under the filter bricks, and the filter bricks are only supported and fixed by screws.

[0032] In other embodiments, the inner holes of the upper pressure plate and the lower support plate on the screw rod may also be threaded holes, and the upper pressure plate and the lower support plate cooperate with the screw rod threads. At this time, the clamping structure may no longer be provided with a locking nut, and only be locked by the upper pressure plate, and the lower support plate is only provided with a single nut on the lower side for locking.

[0033] In other embodiments, the supporting structure may also be a supporting plate fixedly disposed on the fixing rod, and bolts adjustable up and down are disposed on the supporting plate to support the filter bricks.

Claims

1. A filter tank, characterized in that: include; Pool body; The filter material layer is filled in the tank body; A supporting layer, located below the filter material layer; The filter brick layer is buried in the supporting layer and includes a large number of filter bricks arranged in an array; A vertically extending fixing rod is provided at the bottom of the pool body, a supporting structure is installed on at least part of the fixing rod, and a pressing structure is installed on at least part of the fixing rod; The supporting structure is mounted on the fixing rod in an adjustable manner up and down, and the filter bricks of the filter brick layer are clamped and fixed by the supporting structure and the pressing structure; In the filter brick layer, the filter bricks continuously arranged along the length direction of the filter bricks are a row of filter bricks, the pressing structure on the fixing rod between two adjacent rows of filter bricks simultaneously presses the corresponding filter bricks in the two rows, and the supporting structure on the fixing rod between two adjacent rows of filter bricks simultaneously supports the corresponding filter bricks in the two rows; The upper part of the filter brick has symmetrically arranged inclined surfaces on both sides in the width direction so that the upper part of the filter brick presents a ridge-shaped structure, and the pressing structure has a pressing inclined surface adapted to the relative inclined surfaces of the corresponding filter bricks in the two rows; The fixing rod is a screw rod, and the clamping structure includes an upper pressure plate and an upper clamping seat. The upper clamping seat is located below the upper pressure plate, and the upper pressure plate is locked by a locking nut. The two opposite side surfaces of the upper clamping seat are clamping inclined surfaces. Each filter brick is supported by at least two supporting structures in the length direction, and the clamping structure and the supporting structure are installed on the fixing rod.

2. The filter tank according to claim 1, characterized in that: Each filter brick is supported by four supporting structures and compressed by four pressing structures. The four supporting structures and the four pressing structures correspond to the four corners of the filter brick respectively.

3. The filter tank according to claim 1 or 2, characterized in that: The fixing rod is a screw rod, the supporting structure comprises a lower supporting plate and a locking nut, and the lower pressing plate is fixed by the locking nuts located on the upper and lower sides of the lower supporting plate.

4. The filter tank according to claim 1 or 2, characterized in that: The support material of the support layer is filled below the filter brick layer.

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