A multi-functional accessory for rain grate

Abstract

This utility model relates to the field of municipal drainage facilities technology, specifically to a multifunctional accessory for rainwater grates, including a garbage collection trough and a self-closing valve installed on the garbage collection trough. The garbage collection trough has an upward-facing opening and is composed of a hanging part, an overflow part, and a filtering part connected sequentially from top to bottom. The overflow part has a flood discharge port on its side wall, and the filtering part has filter holes. The self-closing valve includes a door leaf and a horizontal hinge shaft installed on the top side of the door leaf. The door leaf is larger than the flood discharge port. Under the action of gravity, the door leaf blocks the flood discharge port from the outside. This accessory can be directly used in the existing structure of the grate installation well. By adding this accessory under the rainwater grate, it can achieve the functions of settling garbage and blocking mosquitoes. It has the advantages of simple structure, low manufacturing cost, easy installation, and strong practicality.

Description

Technical Field

[0001] This utility model relates to the field of municipal drainage facilities technology, specifically to a multifunctional accessory for rainwater grates. Background Technology

[0002] Rainwater grates are an important part of the municipal drainage system. They are mainly used to collect rainwater from the road surface and direct it into the sewer, while preventing large debris from entering. Most existing rainwater grates are grid-type structures, which can only block larger debris and have the following defects: (1) Poor insect prevention: The gaps between the grids are directly connected to the sewer. In summer, insects (such as mosquitoes and cockroaches) can easily crawl out of the sewer through the gaps between the grates and onto the ground, affecting the living environment and hygiene safety; (2) Garbage can easily clog the sewer: Small garbage such as leaves and debris can easily enter the sewer through the grid with rainwater. Long-term accumulation can easily cause pipe blockage, resulting in waterlogging on the road surface during rainy days. Moreover, cleaning up garbage in the sewer is difficult and costly; (3) Single function: Existing grates do not have a special garbage sedimentation and temporary storage structure. Garbage needs to be cleaned after entering the pipe with rainwater. It is impossible to intercept garbage at the source and cannot take into account the dynamic balance between insect prevention and drainage. Utility Model Content

[0003] The purpose of this utility model is to provide a multifunctional accessory for rain grate, which can be installed under the existing rain grate to intercept garbage, prevent insects in normal operation, and not affect the drainage function of the grate.

[0004] The technical solutions for achieving the above objectives include the following:

[0005] A multifunctional accessory for a rainwater grate includes a waste collection trough and a self-closing valve installed on the waste collection trough. The waste collection trough has an upward-facing opening and is composed of a hook-on section, an overflow section, and a filter section connected sequentially from top to bottom. The hook-on section is cone-shaped, wider at the top and narrower at the bottom. The size of the upper port of the hook-on section matches the drain outlet at the bottom of the rainwater grate. A skirt is provided around the top of the hook-on section, and the size of the skirt matches the opening size of the grate installation well. The overflow section has a vent on its side wall. The outlet has a filter section with filter holes. The self-closing valve includes a door leaf and a horizontal hinge shaft installed on the top side of the door leaf. The horizontal hinge shaft is connected to the garbage collection trough. The door leaf is larger than the outlet. Under the action of gravity, the door leaf blocks the outlet from the outside. During operation, the garbage collection trough is set in the grate installation well below the rainwater grate. The upper end of the hanging part receives the drain outlet of the rainwater grate. There is space for the door leaf to swing outward between the overflow part and the inner wall of the grate installation well.

[0006] Furthermore, the waste collection tank is made of stainless steel or corrosion-resistant plastic.

[0007] Furthermore, the taper of the connecting part is 5°-15°. A suitable taper effectively guides the water flow.

[0008] Furthermore, the filter holes are square or round, with a diameter of 1mm-2mm. A suitable filter hole diameter ensures good water filtration while also allowing for the settling of debris and blocking insects.

[0009] Furthermore, the waste collection tank is integrally molded. This integral molding structure can reduce production costs.

[0010] The aforementioned multi-functional accessory is used in conjunction with existing rain grate grates. The skirt size matches the grate installation well opening, ensuring installation under the existing rain grate. When there is no rain, the self-closing valve blocks the large-diameter flood outlet, and the small-diameter filter hole prevents mosquitoes from entering or leaving. Leaves or other garbage seeping from the gaps in the rain grate will settle in the garbage collection trough. Sanitation workers can remove the accessory as needed to empty the garbage. When the rainwater flow is low, rainwater will flow into the sewer through the filter hole. If the rainwater flow is too high, the garbage in the collection trough may block the drainage of the filter hole. If the filter hole cannot drain the water in time, the rainwater pressure accumulated in the garbage collection trough will force open the self-closing valve blocking the flood outlet and discharge it from the flood outlet. Since the opening of the flood outlet is much larger than the filter hole, even in the event of heavy rain, this accessory will not affect the normal drainage of the rain grate.

[0011] This utility model's multifunctional accessory normally blocks mosquitoes from entering and exiting, and in emergency situations such as heavy rain, the flood discharge outlet can be opened without affecting rainwater drainage. This accessory can be directly used in existing grate installation wells; simply adding it below the rainwater grate achieves the functions of settling garbage and blocking mosquitoes. It has advantages such as simple structure, low manufacturing cost, easy installation, and strong practicality. Attached Figure Description

[0012] Figure 1 A diagram illustrating the usage state of a multifunctional accessory for a rain grate when the flood outlet is open, as shown in the embodiment. Figure 2 This is a diagram illustrating the usage state of the multifunctional accessory for a rain grate when the flood outlet is closed, as shown in the embodiment.

[0013] In the diagram, 1. Rain grate; 2. Garbage collection trough; 2-1. Hanging part; 2-2. Flood discharge outlet; 2-3. Filter hole; 3. Self-closing valve. Detailed Implementation

[0014] The present invention will be described in detail below with reference to the embodiments.

[0015] See Figure 1 and 2A multi-functional accessory for a rainwater grate includes a garbage collection trough 2 and a self-closing valve 3 installed on the garbage collection trough 2. The garbage collection trough 2 has an upward-facing opening and is made of corrosion-resistant plastic in one piece. The trough 2 consists of a hook-on part 2-1, an overflow part, and a filter part connected sequentially from top to bottom. The hook-on part 2-1 is tapered, wider at the top and narrower at the bottom, with a taper of 10°. The size of the upper port of the hook-on part 2-1 matches the bottom drain outlet of the rainwater grate 1. The top periphery of the hook-on part 2-1 is provided with a skirt, the size of which matches the opening size of the grate installation well. The overflow part has a flood discharge outlet on its side wall. 2-2, The filter section is provided with circular filter holes 2-3 with a diameter of 1.5mm. The self-closing valve 3 includes a door leaf and a horizontal hinge shaft installed on the top side of the door leaf. The horizontal hinge shaft is connected to the garbage collection tank 2. The size of the door leaf is larger than the flood discharge outlet 2-2. Under the action of gravity, the door leaf blocks the flood discharge outlet 2-2 from the outside. When working, the garbage collection tank 2 is set in the grate installation well below the rainwater grate 1. The upper end of the hanging part 2-1 receives the drain outlet of the rainwater grate 1. The skirt is hung on the step where the rainwater grate 1 is installed. There is space for the door leaf to swing outward between the overflow part and the inner wall of the grate installation well.

[0016] The multifunctional accessory of this embodiment can be assembled and used based on the existing municipal drainage facility structure. The existing rain grate 1 is opened, and the garbage collection trough 2 is placed into the grate installation well with its opening facing upwards. After the skirt is attached to the installation step at the edge of the well opening, the accessory is fixed. Then, the rain grate 1 is reset, at which point the upper end of the garbage collection trough 2 is aligned with the drain outlet of the rain grate 1. Normally, garbage leaking from the gaps in the rain grate 1 is settled in the collection trough 2, which sanitation workers can remove and empty as needed, thus preventing garbage from entering the sewer. The filter holes 2-3 of this accessory ensure that mosquitoes cannot enter while also allowing some water to leak through. When a sudden downpour occurs, if water enters the collection trough and cannot drain through the filter holes 2-3 in time, the pressure of the water in the collection trough will force open the self-closing valve 3 blocking the flood discharge outlet 2-2, and the water will be discharged from the flood discharge outlet 2-2 into the sewer, thus accelerating drainage.

[0017] The multifunctional accessory of this embodiment can be directly installed below the existing rain grate 1 to achieve beneficial functions such as blocking mosquitoes and settling garbage, and has the advantages of low manufacturing cost and broad application prospects.

Claims

1. A multifunctional fitting for a rainwater grate, characterized in that The system includes a garbage collection trough and a self-weight closing valve installed on the trough. The garbage collection trough has an upward-facing opening and consists of a hanging part, an overflow part, and a filter part connected sequentially from top to bottom. The hanging part is cone-shaped, wider at the top and narrower at the bottom. The size of the upper port of the hanging part matches the drain outlet at the bottom of the rainwater grate. The top perimeter of the hanging part has a skirt, the size of which matches the opening size of the grate installation well. The overflow part has a flood discharge port on its side wall. The filter part has water filter holes with a diameter sufficient to prevent mosquitoes from entering or exiting. The self-weight closing valve... The valve includes a door leaf and a horizontal hinge shaft installed on the top side of the door leaf. The horizontal hinge shaft is connected to the garbage collection trough. The size of the door leaf is larger than the flood discharge outlet. Under the action of gravity, the door leaf blocks the flood discharge outlet from the outside. During operation, the garbage collection trough is set in the grate installation well below the rainwater grate. The upper end of the hook part receives the drain outlet of the rainwater grate. There is space for the door leaf to swing outward between the overflow part and the inner wall of the grate installation well. The taper of the hook part is 5°-15°. The filter hole is square or round with a diameter of 1mm-2mm.

2. The multifunctional fitting for a rainwater grate according to claim 1, characterized in that The waste collection tank is made of stainless steel or corrosion-resistant plastic.

3. The multifunctional fitting for a rainwater grate according to claim 1, characterized in that, The waste collection trough is formed in one piece.

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