Construction device for sand filter

Abstract

The application discloses a construction device for a sand filter tank, and belongs to the technical field of sand filter tank construction, which comprises a shear wall, the upper end of a top inclined formwork and the upper end of a bottom inclined formwork are simultaneously sealed through a movable cover plate, the lower end of the top inclined formwork is hinged to one end of a horizontal formwork, and end formworks are arranged at the two ends of the top inclined formwork and the bottom inclined formwork; a sleeve pipe is arranged on the shear wall on the same side of a V-shaped groove, the sleeve pipe simultaneously penetrates through through holes arranged on the top inclined formwork and the bottom inclined formwork, a screw rod is rotationally arranged at the center of the sleeve pipe, a first nut and a second nut are simultaneously threadedly connected to the screw rod, the screw threads of the first nut and the second nut are opposite in rotation direction, the first nut can drive the top inclined formwork to deflect towards one side of the bottom inclined formwork by rotating the screw rod, and the second nut can drive the bottom inclined formwork to deflect towards one side of the top inclined formwork. The construction device can be used for rapidly constructing the V-shaped groove of the sand filter tank, and the construction quality of the V-shaped groove is ensured.

Description

Technical Field

[0001] This invention belongs to the field of sand filter construction technology, specifically relating to a construction device for sand filters. Background Technology

[0002] The purpose of using filters in wastewater treatment is to remove fine suspended solids, especially fine suspended particles and colloidal substances that cannot be removed by biological treatment and coagulation sedimentation. Filters are widely used as a tertiary treatment method to further treat secondary treated effluent; or as pretreatment for advanced treatments such as activated carbon adsorption, ion exchange, electrodialysis, reverse osmosis, and membrane separation. Most existing sand filters have V-shaped or H-shaped tanks. For V-shaped tanks, direct excavation can easily lead to tank structure damage and substandard V-shaped tank precision, seriously affecting the filtration quality. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a construction device for sand filters, which can be used to quickly construct V-shaped channels in sand filters and ensure the construction quality of V-shaped channels.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] This invention discloses a construction device for a sand filter, comprising a shear wall, one side of which forms a sidewall of a V-shaped groove in the sand filter. A bottom inclined template is hinged to one side of the shear wall, and a top inclined template is spaced apart above the bottom inclined template. The upper ends of the top and bottom inclined templates are simultaneously sealed by movable cover plates. The lower end of the top inclined template is hinged to one end of a horizontal template, and the other end of the horizontal template is installed to the shear wall. End templates are provided at both ends of the bottom and top inclined templates. A sleeve is installed on the shear wall on the same side as the V-shaped groove, and the sleeve passes horizontally through through holes opened on both the top and bottom inclined templates. A screw is rotatably mounted at the center of the sleeve, and a first nut and a second nut are threadedly connected to the screw. The threads of the first and second nuts have opposite directions. By rotating the screw, the first nut can drive the top inclined template to deflect towards the bottom inclined template, and the second nut can drive the bottom inclined template to deflect towards the top inclined template.

[0006] Furthermore, the first nut is connected to the first push plate, the first push plate has a first guide hole, a first guide rod is slidably inserted in the first guide hole, the first guide rod is fixedly connected to the first pressure plate, a first spring is installed between the first pressure plate and the first push plate, and the first pressure plate abuts against the top inclined template.

[0007] Furthermore, the second nut is connected to the second push plate, the second push plate has a second guide hole, a second guide rod slides through the second guide hole, the second guide rod is fixedly connected to the second pressure plate, a second spring is installed between the second pressure plate and the second push plate, and the second pressure plate abuts against the bottom inclined template.

[0008] Furthermore, the first guide rod is connected to a first limiting member at the end away from the top inclined template, and the second guide rod is connected to a second limiting member at the end away from the bottom inclined template.

[0009] Furthermore, a first push rod is connected to the first push plate, and the first push rod is slidably disposed in an opening groove opened on the sleeve, and the first push rod is detachably connected to the first nut; a second push rod is connected to the second push plate, and the second push rod is slidably disposed in an opening groove opened on the sleeve, and the second push rod is detachably connected to the second nut.

[0010] Furthermore, a rubber ring is installed inside the through hole, and the inner side of the rubber ring abuts against the surface of the sleeve.

[0011] Furthermore, a limiting block is integrally connected to the inner side of the sleeve, and a rotating cavity is provided in the limiting block. The outer end of the screw extends out of the sleeve, and the inner side of the screw is fixedly connected to the rotating disk. The rotating disk is rotatably disposed in the rotating cavity.

[0012] Furthermore, one end of the movable cover plate is hinged to the top inclined template, and the other end is connected to the bottom inclined template through an arc-shaped elastic plate. An upper limit plate and a lower limit plate are integrally fixed at both ends of the arc-shaped elastic plate, and a T-shaped groove corresponding to the upper limit plate is formed on the lower surface of the top inclined template, and an L-shaped groove corresponding to the lower limit plate is formed on the upper surface of the bottom inclined template.

[0013] The beneficial effects of this invention are as follows:

[0014] This invention discloses a construction device for sand filters. A shear wall can be used as a stable surface of the V-shaped channel. By simultaneously setting a bottom inclined template, a top inclined template, and a movable cover plate, the device can be used to quickly pour the V-shaped channel of the sand filter, ensuring the construction quality of the V-shaped channel.

[0015] In the construction device disclosed in this invention, by rotating the screw, the bottom and top inclined templates can be compressed towards opposite sides, avoiding the collapse caused by the weight of the concrete on the bottom inclined template and preventing air bubbles from forming between the concrete and the top inclined template. Therefore, by using the above method, the internally poured concrete can be compressed, resulting in a more compact internal structure and ensuring the construction quality of the V-groove. Adjustment via the screw is also convenient.

[0016] In the construction device disclosed in this invention, the thread engagement spacing between the screw and the first nut and the second nut is different. Therefore, the spacing can be adaptively adjusted according to the deflection angle of the bottom inclined template and the top inclined template, so as to achieve synchronous deflection of the bottom inclined template and the top inclined template and ensure the uniformity of the internal concrete construction.

[0017] Other advantages, objectives, and features of the invention will be set forth in the following description and will be apparent to those skilled in the art in some respects, or may be learned by practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0018] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the following figures are provided for illustration:

[0019] Figure 1 This is a schematic diagram of the construction device of the present invention;

[0020] Figure 2 for Figure 1 Enlarged view at point A;

[0021] Figure 3 for Figure 1 Enlarged view at point B;

[0022] Figure 4 for Figure 1 Enlarged view at point C;

[0023] Figure 5 This is a schematic diagram of the casing structure.

[0024] The following are the markings in the attached diagram: Shear wall 1, V-groove 2, Bottom inclined template 3, Top inclined template 4, Movable cover plate 5, Horizontal template 6, End template 7, Sleeve 8, Screw 9, First nut 10, Second nut 11, First push plate 12, First guide hole 13, First guide rod 14, First pressure plate 15, First spring 16, Second push plate 17, Second guide hole 18, Second guide rod 19, Second pressure plate 20, Second spring 21, First limiting member 22, Second limiting member 23, First push rod 24, Opening groove 25, Second push rod 26, Rubber ring 27, Limiting block 28, Rotating cavity 29, Rotating disk 30, Arc-shaped elastic plate 31, Upper limit plate 32, Lower limit plate 33. Detailed Implementation

[0025] like Figures 1-5As shown, the present invention discloses a construction device for a sand filter, comprising a shear wall 1, which is vertically arranged and prefabricated in a factory, or cast on-site according to actual conditions. One side of the shear wall 1 forms one side wall of a V-shaped channel 2 for the sand filter, and the V-shaped channel 2 extends along a path perpendicular to the sand filter. Figure 1 The direction of the paper extends. A bottom inclined template 3 is hinged to one side of the shear wall 1. The upper end of the bottom inclined template 3 extends upward at an angle that is similar to the angle of the inclined wall of the V-groove 2.

[0026] A top inclined formwork 4 is provided on the upper side of the bottom inclined formwork 3 at intervals. The inclination angle of the top inclined formwork 4 is basically the same as that of the bottom inclined formwork 3. The shear wall 1 itself is a side wall. After steel bars are inserted between the top inclined formwork 4 and the bottom inclined formwork 3, the other side wall of the V-shaped groove 2 is formed. The upper ends of the top inclined formwork 4 and the upper ends of the bottom inclined formwork 3 are sealed by movable cover plates 5 to prevent concrete from overflowing. The lower end of the top inclined formwork 4 is hinged to one end of the horizontal formwork 6. The other end of the horizontal formwork 6 is installed to the shear wall 1. End formwork 7 is provided at both ends of the bottom inclined formwork 3 and the top inclined formwork 4 to restrict the two ends of the concrete.

[0027] Specifically, in this invention, a sleeve 8 is installed on the shear wall 1 on the same side as the V-shaped groove 2. The sleeve 8 horizontally passes through through holes opened in the top inclined template 4 and the bottom inclined template 3. A screw 9 is rotatably installed at the center of the sleeve 8. The sleeve 8 serves to combine the concrete and facilitates the rotation of the screw 9. A first nut 10 and a second nut 11 are threadedly connected to the screw 9. The threads of the first nut 10 and the second nut 11 have opposite directions. By rotating the screw 9, the first nut 10 can drive the top inclined template 4 to deflect towards the bottom inclined template 3, and the second nut 11 can drive the bottom inclined template 3 to deflect towards the top inclined template 4. This invention, by simultaneously setting the bottom inclined template 3, the top inclined template 4, and the movable cover plate 5, can be used for rapid pouring construction of the V-shaped groove 2 in the sand filter, ensuring the construction quality of the V-shaped groove 2.

[0028] In some other embodiments, the thread engagement spacing between the screw 9 and the first nut 10 and the second nut 11 is different. Therefore, the spacing can be adaptively adjusted according to the deflection angle of the bottom inclined template 3 and the top inclined template 4, achieving synchronous deflection of the bottom inclined template 3 and the top inclined template 4 and ensuring the uniformity of the internal concrete construction. For example, when the screw 9 is adjusted, since the deflection angles of the bottom inclined template 3 and the top inclined template 4 are different, the corresponding moving distances of the first nut 10 and the second nut 11 are also different. Therefore, the thread engagement spacing of the first nut 10 and the second nut 11 needs to be set to correspond to the angle of their respective inclined templates to achieve synchronous adjustment of the bottom inclined template 3 and the top inclined template 4 as much as possible, allowing the concrete between the inclined templates to be effectively compacted, thereby reducing the generation of air bubbles in the concrete.

[0029] In this embodiment, the first nut 10 is connected to the first push plate 12, which is arranged vertically. The first push plate 12 has a first guide hole 13, through which a first guide rod 14 slides. The diameter of the first guide hole 13 is larger than that of the first guide rod 14. The first guide rod 14 is fixedly connected to the first pressure plate 15. A first spring 16 is installed between the first pressure plate 15 and the first push plate 12. The first pressure plate 15 abuts against the top inclined template 4. When the first nut 10 moves, it can drive the first push plate 12 to move, thereby pressing the first pressure plate 15 against the top inclined template 4 via the first spring 16, thus achieving the pushing and pressing operation of the top inclined template 4.

[0030] Similarly, the present invention discloses that the second nut 11 is connected to the second push plate 17, the second push plate 17 is provided with a second guide hole 18, the second guide rod 19 is slidably passed through the second guide hole 18, the second guide rod 19 is fixedly connected to the second pressure plate 20, the second pressure plate 20 and the second push plate 17 are provided with a second spring 21, the second pressure plate 20 abuts against the bottom inclined template 3, and the pushing operation of the bottom inclined template 3 can also be realized.

[0031] In this embodiment, the first guide rod 14 is connected to a first limiting member 22 at the end away from the top inclined template 4, and the second guide rod 19 is connected to a second limiting member 23 at the end away from the bottom inclined template 3. The first limiting member 22 and the second limiting member 23 can be used to limit the left extreme position of the first push plate 12 and the second push plate 17 respectively, to prevent the first push plate 12 and the second push plate 17 from coming off.

[0032] In this embodiment, a first push rod 24 is connected to the first push plate 12. The first push rod 24 is slidably disposed in the opening slot 25 opened on the sleeve 8, and the first push rod 24 is detachably connected to the first nut 10. A second push rod 26 is connected to the second push plate 17. The second push rod 26 is slidably disposed in the opening slot 25 opened on the sleeve 8, and the second push rod 26 is detachably connected to the second nut 11. By setting the first push rod 24 and the second push rod 26, the push rod and nut can be easily disassembled and assembled, can be reused, and save costs.

[0033] In this embodiment, a rubber ring 27 is installed inside the through hole. The inner side of the rubber ring 27 abuts against the surface of the sleeve 8, which can be used to seal the position between the sleeve 8 and the inclined template to prevent concrete from overflowing and make construction more convenient.

[0034] In this embodiment, a limiting block 28 is integrally connected to the inner side of the sleeve 8. A rotating cavity 29 is provided in the limiting block 28. The outer end of the screw 9 extends out of the sleeve 8. The inner side of the screw 9 is fixedly connected to the rotating disk 30. The rotating disk 30 is rotatably disposed in the rotating cavity 29, which can realize the rotatable connection between the sleeve 8 and the screw 9. The sleeve 8 is made of PVC material, which is convenient for later destruction and removal.

[0035] In this embodiment, one end of the movable cover plate 5 is hinged to the top inclined template 4, and the other end is connected to the bottom inclined template 3 via an arc-shaped elastic plate 31. An upper limit plate 32 and a lower limit plate 33 are integrally fixed to both ends of the arc-shaped elastic plate 31. A T-shaped groove corresponding to the upper limit plate 32 is formed on the lower surface of the top inclined template 4, and an L-shaped groove corresponding to the lower limit plate 33 is formed on the upper surface of the bottom inclined template 3. By setting the arc-shaped elastic plate 31, it has a certain deformation function, thereby adapting to the relative movement of the top inclined template 4 and the bottom inclined template 3. Under its own elastic force, the movable cover plate 5 can be tightly fitted to the upper end of the bottom inclined template 3, which can be used to seal the mold cavity and reduce concrete overflow.

[0036] After the concrete has solidified, the screw 9 is rotated in the reverse direction, causing the first nut 10 and the second nut 11 to move away from each other. The first limiting member 22 and the second limiting member 23 are released, and the screw 9 is continuously rotated so that the first pushing plate 12 and the second pushing plate 17 can be disengaged from the first guide rod 14 and the second guide rod 19, respectively. Then, the first push rod 24, the second push rod 26, the first pushing plate 12, the second pushing plate 17, the first guide rod 14, the second guide rod 19, the first spring 16, and the second spring 21 are removed and recycled. Next, the portion of the sleeve 8 located at the outer end of the V-groove 2 is destroyed, and the screw 9, connecting the first nut 10 and the second nut 11, is removed from the right end of the sleeve 8 for future use, saving costs. Finally, the hole in the sleeve 8 is sealed, completing the construction of the V-groove 2.

[0037] The V-shaped groove disclosed in this invention has a height of 1.08m, a width of 0.9m, and a thickness of 0.15m. The concrete used is C35 fine aggregate concrete with an impermeability grade of S8. During construction, the formwork is moistened with water before concrete pouring. The V-shaped groove concrete is poured using a pump truck and chute. An immersion vibrator is used for concrete compaction; it should be inserted vertically, quickly inserted, and slowly withdrawn. Insertion points should be evenly spaced, moved point by point, and proceeded sequentially without omission. The spacing between insertion points should not exceed 1.5 times the vibration radius. During vibration, the vibrator must not touch the reinforcing steel or formwork. Each insertion and vibration session should last approximately 20-30 seconds, and vibration must be stopped when the concrete no longer settles significantly, no air bubbles appear, and the surface begins to gloss over. Excessive vibration time should be avoided to prevent affecting concrete quality. Special care must be taken during vibration to prevent the vibrator from directly contacting the formwork, reinforcing steel, and embedded parts.

[0038] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. A construction device for sand filter beds, characterized in that: The system includes a shear wall, one side of which forms a sidewall of a V-shaped groove in a sand filter. A bottom inclined template is hinged to one side of the shear wall, and a top inclined template is spaced apart above the bottom inclined template. The upper ends of the top and bottom inclined templates are simultaneously sealed by movable cover plates. The lower end of the top inclined template is hinged to one end of a horizontal template, and the other end of the horizontal template is installed to the shear wall. End templates are provided at both ends of the bottom and top inclined templates. A sleeve is installed on the shear wall on the same side as the V-shaped groove. The sleeve passes horizontally through through holes opened on both the top and bottom inclined templates. A screw is rotatably mounted at the center of the sleeve. A first nut and a second nut are threaded onto the screw. The threads of the first and second nuts have opposite directions. By rotating the screw, the first nut can drive the top inclined template to deflect toward the bottom inclined template, and the second nut can drive the bottom inclined template to deflect toward the top inclined template.

2. The construction device for a sand filter pond according to claim 1, characterized in that: The first nut is connected to the first push plate, the first push plate has a first guide hole, the first guide rod slides through the first guide hole, the first guide rod is fixedly connected to the first pressure plate, the first pressure plate and the first push plate are installed with a first spring, and the first pressure plate abuts against the top inclined template.

3. The construction device for a sand filter pond according to claim 2, characterized in that: The second nut is connected to the second push plate, the second push plate has a second guide hole, a second guide rod slides through the second guide hole, the second guide rod is fixedly connected to the second pressure plate, a second spring is installed between the second pressure plate and the second push plate, and the second pressure plate abuts against the bottom inclined template.

4. The construction device for a sand filter pond according to claim 3, characterized in that: The first guide rod is connected to a first limiting member at the end away from the top inclined template, and the second guide rod is connected to a second limiting member at the end away from the bottom inclined template.

5. A construction device for a sand filter pond according to claim 4, characterized in that: A first push rod is connected to the first push plate. The first push rod is slidably disposed in an opening groove on the sleeve. The first push rod is detachably connected to the first nut. A second push rod is connected to the second push plate. The second push rod is slidably disposed in an opening groove on the sleeve. The second push rod is detachably connected to the second nut.

6. The construction device for a sand filter pond according to claim 1, characterized in that: A rubber ring is installed inside the through hole, and the inner side of the rubber ring abuts against the surface of the sleeve.

7. A construction device for a sand filter pond according to claim 1, characterized in that: A limiting block is integrally connected to the inner side of the sleeve, and a rotating cavity is provided in the limiting block. The outer end of the screw extends out of the sleeve, and the inner side of the screw is fixedly connected to the rotating disk. The rotating disk is rotatably disposed in the rotating cavity.

8. A construction device for a sand filter pond according to any one of claims 1-7, characterized in that: One end of the movable cover plate is hinged to the top inclined template, and the other end is connected to the bottom inclined template through an arc-shaped elastic plate. An upper limit plate and a lower limit plate are integrally fixed at both ends of the arc-shaped elastic plate. A T-shaped groove corresponding to the upper limit plate is formed on the lower surface of the top inclined template, and an L-shaped groove corresponding to the lower limit plate is formed on the upper surface of the bottom inclined template.

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