Sealing device for top long seam of grit chamber

Abstract

The utility model relates to a long seam sealing device at the top of a grit chamber and relates to the technical field of water treatment. The device comprises a sand suction bent pipe, an inverted buckling groove and a water containing groove. The inverted buckling groove is inversely buckled on the water containing groove and partially covers the water containing groove, and an accommodating space is formed by the inverted buckling groove and the water containing groove; liquid is contained in the water containing tank; the opening direction of the reverse buckling groove faces the grit chamber long seam and covers part of the grit chamber long seam, and the bottom part of the water containing groove is combined with the reverse buckling groove and completely covers the grit chamber long seam. The sand suction elbow comprises a bent part, the first end of the sand suction elbow protrudes out of the containing space, the second end of the sand suction elbow passes through the grit chamber long seam, and the bent part is located in the containing space. The position of the sand suction bent pipe is limited and sealed through the water containing groove and the reverse buckling groove, so that the sand suction bent pipe has a movement space in the working process, and due to the fact that liquid exists in the water containing groove, odor in the grit chamber can be effectively absorbed by the liquid in the dissipation process, and then effective sealing of a long seam in the top of the grit chamber is achieved.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, and in particular to a long seam sealing device for the top of a sedimentation tank. Background Technology

[0002] With increasingly stringent environmental protection requirements, wastewater treatment plants are mandated to seal all process units with covers or hoods. In related technologies, fugitive gases escaping from these units are collected through pipes connected to the covers or hoods and then treated for unified deodorization at the end. However, for process units with numerous upper-level facilities and equipment, covering or hooding can easily lead to the accumulation of acidic gases, corroding the equipment. For example, the upper part of a wastewater treatment plant's grit chamber contains rail-mounted trolleys, motors, and pumps that drive the suction pipes; covering these components can easily cause corrosion, and personnel performing maintenance in the confined space are at risk. Therefore, covering the top of grit chambers to prevent odor escape is generally not recommended. However, the long slits at the top of grit chambers where the sludge suction port moves back and forth can easily allow odors to escape. Therefore, odor prevention at the top of grit chambers is generally limited to sealing these long slits.

[0003] In related technologies, there is a sealing device for aerated grit chambers that uses a zipper structure to seal the long seams of the grit chamber. However, this zipper structure has many moving parts, leading to a high failure rate, and the rigid connectors are prone to wear. Document CN219002081U provides a sealing device for the sand discharge channel of an aerated grit chamber, which uses sealing brushes installed on both sides of the long seam to prevent odor escape. However, the brushes cannot achieve a perfect seal, and the flexible horizontal bristles on the wider sides of the long seam are prone to bending and sagging under gravity, causing leaks. Document CN219558791U provides a sealing cover connection structure for aerated grit chambers, which uses PE plates with a thickness of 0.5–2 mm to seal both sides of the long seam. However, the plate-shaped seal and the edge of the cylindrical suction pipe running in the middle cannot be well coupled, and the flexible PE plate is prone to deformation and collapse, allowing odor to still escape. Document CN 220824501 U provides a sedimentation tank with a top-sealed structure. By sealing both sides of the long seam with rubber soft curtains, the coupling leakage between the rubber soft curtains and the sand suction pipe and the collapse and deformation of the soft curtains will also occur.

[0004] Therefore, existing technologies all have related defects and cannot effectively solve the problem of effectively sealing the long seam at the top of the sedimentation tank. Summary of the Invention

[0005] This utility model relates to a sealing device for the long seam at the top of a sedimentation tank, which can effectively seal the long seam at the top of the sedimentation tank. The device includes a sand suction bend, an inverted groove, and a water holding tank;

[0006] The inverted groove is placed upside down on the water tank, partially covering the water tank, and the inverted groove and the water tank form a receiving space;

[0007] The water tank contains liquid;

[0008] The opening of the inverted groove faces the long seam of the sedimentation tank and covers part of the long seam. The bottom part of the water-holding tank is combined with the inverted groove to completely cover the long seam of the sedimentation tank.

[0009] The sand suction bend includes a bend, the first end of the sand suction bend protrudes out of the receiving space, the second end of the sand suction bend passes through the long slit of the sedimentation tank, and the bend is located within the receiving space.

[0010] In one possible implementation, the bend is implemented as an S-shaped bend.

[0011] In one possible implementation, the bend includes a descending bend and a rising bend;

[0012] The rising elbow is located near the first end of the sand suction bend;

[0013] The descending bend is located near the second end of the sand suction bend.

[0014] In one possible implementation, the riser is located below the liquid level in the water tank.

[0015] In one possible implementation, the edge of the inverted groove, which is close to the water tank, extends below the surface of the liquid contained in the water tank.

[0016] In one possible implementation, the device further includes an overflow pipe;

[0017] The overflow pipe inlet is connected to the water tank;

[0018] The outlet of the overflow pipe is located inside the long slit of the sedimentation tank.

[0019] In one possible implementation, the device also includes a water supply pipe;

[0020] The inlet of the water supply pipe is connected to the water source;

[0021] The outlet of the water supply pipe is connected to the water tank.

[0022] In one possible implementation, the water supply pipe is equipped with a water supply pump;

[0023] When the water level in the water tank is lower than the preset water level, the water replenishment pump replenishes the water tank with liquid.

[0024] In one possible implementation, the water supply pump is a programmable water supply pump.

[0025] The beneficial effects of the technical solution provided by this utility model include at least the following:

[0026] By restricting the position and sealing the sand suction bend with the water tank and the inverted groove, the sand suction bend has room to move during operation. Furthermore, because there is liquid in the water tank, the odor in the sedimentation tank can be effectively absorbed by the liquid during the dissipation process, thus solving the problem of effectively sealing the long seam at the top of the sedimentation tank. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This illustration shows an application scenario of a long seam sealing device for the top of a sedimentation tank provided by an exemplary embodiment of the present invention.

[0029] Figure 2 The diagram shows a side view of a long seam sealing device for the top of a sedimentation tank, provided in an exemplary embodiment of the present invention.

[0030] The labels in the attached diagram are as follows:

[0031] 1-Sand suction bend, 2-Inverted groove, 3-Water holding tank, 4-Long seam of sedimentation tank, 5-Overflow pipe, 6-Water supply pipe, 7-Water supply pump;

[0032] 11-Bend;

[0033] 111 - Descending bend, 112 - Ascending bend. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0035] It should be noted that the sealing device for the long seam at the top of the sedimentation tank involved in this utility model is used to cover the long seam at the top of the sedimentation tank in actual application scenarios.

[0036] Figure 1 This diagram illustrates an application scenario of a long-slit sealing device for the top of a sedimentation tank, provided by an exemplary embodiment of the present invention. Figure 2 This diagram shows a side view of a long seam sealing device for the top of a sedimentation tank according to an exemplary embodiment of the present invention. Please refer to the diagram. Figure 1 as well as Figure 2The device includes a sand-suction bend 1, an inverted groove 2, and a water-holding tank 3. The inverted groove 2 is inverted onto the water-holding tank 3, partially covering it, and the inverted groove 2 and the water-holding tank 3 form a receiving space. The water-holding tank 3 contains liquid. The opening of the inverted groove 2 faces the long seam 4 of the sedimentation tank and covers part of the long seam 4. The bottom part of the water-holding tank 3 is combined with the inverted groove 2 to completely cover the long seam 4 of the sedimentation tank. The sand-suction bend 1 includes a bend, the first end of which protrudes out of the receiving space, and the second end of which passes through the long seam 4 of the sedimentation tank. The bend is located within the receiving space.

[0037] The grit chamber applicable to this embodiment is two sets of parallel horizontal flow grit chambers, with a cast-in-place concrete roof slab. Each set of grit chambers has a long slit in the middle of its long side at the top. The grit suction gantry track is also arranged along the two long sides of the grit chamber's top. The gantry is erected along the short side of the grit chamber's top and can move horizontally along the long side, simultaneously driving the suction pipe to move along the long slit in the top of the grit chamber.

[0038] In this embodiment of the invention, the liquid contained in the water tank 3 forms a liquid seal to prevent odor from escaping into the environment through the long slit at the top of the sedimentation tank.

[0039] In this embodiment of the invention, the inverted groove 2 partially covers the long seam 4 of the sedimentation tank and, together with the water tank 3, forms a receiving space for the passage of the suction bend 1. Optionally, the size of this receiving space is such that the suction bend 1 can reciprocate within a limited range.

[0040] In an optional embodiment, please refer to Figure 1 as well as Figure 2 The bend is S-shaped. Correspondingly, the bend includes a descending bend and a ascending bend; the ascending bend is near the first end of the sand suction pipe 1; the descending bend is near the second end of the sand suction pipe 1. The ascending bend is located below the liquid surface in the water tank 3. The edge of the inverted groove 2, which is close to the water tank 3, extends below the liquid surface in the water tank 3. Therefore, the sand suction pipe 1 can reciprocate along the long side of the sedimentation tank without contacting the bottom of the water tank 3 or the edge of the inverted groove 2, ensuring that liquid from the water tank 3 always surrounds the cylindrical sand suction pipe, forming a liquid seal.

[0041] In an optional embodiment, the device further includes an overflow pipe 5; the inlet of the overflow pipe 5 is connected to the water tank 3; the outlet of the overflow pipe 5 is located inside the long slit 4 of the sedimentation tank. When the water level in the water tank 3 reaches the level of the overflow pipe 5, replenished water flows from one end of the replenishment pipe 6 to the other end of the overflow pipe 5 until the replenished water completely replaces the water in the water tank 3. In this case, the overflow pipe 5 can prevent the water in the water tank 3 from overflowing, or, during the water replacement process, ensure proper liquid replacement.

[0042] Because the sealing system is located at the top of the grit chamber, the liquid seal water has a certain evaporation rate, causing the liquid seal water level to drop and potentially breaking the seal. Simultaneously, odorous gases such as volatile organic acids emitted from the grit chamber are absorbed by the liquid seal water. Excessive absorption of these gases can lead to secondary odor release from the exposed side of the liquid seal water. Therefore, the liquid seal water needs to be replenished and replaced periodically. In an optional embodiment, the device further includes a water supply pipe 6; the inlet of the water supply pipe 6 is connected to a water source; the outlet of the water supply pipe 6 is connected to a water tank 3. Correspondingly, the water supply pipe 6 is equipped with a water supply pump 7; when the water level in the water tank 3 is lower than a preset level, the water supply pump 7 replenishes liquid into the water tank 3. In an optional embodiment, the water supply pump 7 is a programmable water supply pump. When the water replenishment pump 7 is implemented as a programmable water replenishment pump, it is programmed to automatically start replenishing water according to the evaporation replenishment demand and the liquid seal water exchange cycle, and automatically shut down after reaching the replenishment time, periodically and automatically starting to replenish water to the water tank 34. Optionally, the water replenishment pipe 6 is connected to the wastewater treatment plant's water supply system to draw water. This application does not limit the specific model of the programmable water replenishment pump. In one example, the programmable water pump is formed by combining a timer socket and a self-priming pump. The timer socket is model GND-1, and the self-priming pump is model WZB.

[0043] In summary, the device provided by this utility model embodiment restricts the position of the sand suction bend and provides a sealing setting through the water tank and the inverted groove, so that the sand suction bend has room to move during the working process. Moreover, since there is liquid in the water tank, the odor in the sedimentation tank can be effectively absorbed by the liquid during the dissipation process, thereby solving the problem of effectively sealing the long seam at the top of the sedimentation tank.

[0044] The apparatus provided in the various embodiments of this utility model also has the following beneficial effects:

[0045] (1) The problem of not being able to use liquid sealing for the long gap at the top of the sedimentation tank was solved by setting up an S-bend sand suction pipe.

[0046] (2) The problem of seamless coupling between the sand suction pipe and the sealing component was solved by adopting a liquid sealing method.

[0047] (3) The reciprocating solid sand suction pipe only comes into contact with liquid liquid seal water, which can avoid the wear problem between traditional solid moving parts.

[0048] (4) By setting up a water supply pipe to replenish the water tank, the problem of liquid seal failure caused by the evaporation of liquid seal water can be prevented, thus ensuring the long-term operation of the liquid seal.

[0049] (5) The overflow pipe ensures that the water is replenished in excess each time and replaces the water in the water tank, preventing the odor from escaping again after the liquid seal water in the water tank absorbs too much odor.

[0050] (6) By setting a programmable water pump, the sealing device is periodically replenished with water, thereby realizing the automatic operation of the sealing device.

[0051] (7) The liquid sealing technology replaces the traditional solid component sealing, avoiding traditional defects such as wear and deformation. The device has a simple structure, low cost and good stability.

[0052] The above are merely optional embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sealing device for a long seam at the top of a sedimentation tank, comprising a long seam in the sedimentation tank, characterized in that, The device also includes a sand suction bend (1), an inverted groove (2), and a water tank (3); The inverted groove (2) is inverted on the water tank (3) and partially covers the water tank (3). The inverted groove (2) and the water tank (3) form a receiving space. The water tank (3) contains liquid; The opening of the inverted groove (2) faces the long seam (4) of the sedimentation tank and covers part of the long seam (4) of the sedimentation tank. The bottom part of the water tank (3) is combined with the inverted groove (2) to completely cover the long seam (4) of the sedimentation tank. The sand suction bend (1) includes a bend (11), the first end of the sand suction bend protrudes out of the accommodating space, the second end of the sand suction bend passes through the long seam of the sedimentation tank, and the bend is located within the accommodating space.

2. The long seam sealing device for the top of the sedimentation tank according to claim 1, characterized in that, The bending portion (11) is implemented as an S-shaped bend.

3. The long seam sealing device for the top of the sedimentation tank according to claim 2, characterized in that, The bending section (11) includes a descending elbow (111) and an ascending elbow (112). The rising elbow (112) is close to the first end of the sand suction bend (1); The descending elbow (111) is located near the second end of the sand suction elbow (1).

4. The long seam sealing device for the top of the sedimentation tank according to claim 3, characterized in that, The rising elbow (112) is located below the liquid level in the water tank (3).

5. The long seam sealing device for the top of the sedimentation tank according to claim 4, characterized in that, The edge of the inverted groove (2) that is close to the water tank (3) extends below the liquid surface in the water tank (3).

6. The long seam sealing device for the top of the sedimentation tank according to claim 1, characterized in that, The device also includes an overflow pipe (5); The inlet of the overflow pipe (5) is connected to the water tank (3); The outlet of the overflow pipe (5) is located inside the long slit (4) of the sedimentation tank.

7. The long seam sealing device for the top of the sedimentation tank according to claim 1, characterized in that, The device also includes a water supply pipe (6); The inlet of the water supply pipe (6) is connected to the water source; The outlet of the water supply pipe (6) is connected to the water tank (3).

8. The long seam sealing device for the top of the sedimentation tank according to claim 7, characterized in that, The water supply pipe is equipped with a water supply pump (7); When the water level in the water tank (3) is lower than the preset water level, the water replenishment pump (7) replenishes the water tank with liquid.

9. The long seam sealing device for the top of the sedimentation tank according to claim 8, characterized in that, The water supply pump (7) is a programmable water supply pump.

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