CN103074934B - Sewer well lid - Google Patents

Abstract

The invention discloses a sewer manhole cover, in particular to a non-blocking sewer manhole cover that automatically floats up when the flow is large and resets automatically when the flow is small, which consists of an upper cover plate, a guide rod, and a lower well base. It is characterized in that the lower well base is There are guide holes in the inner groove, and there are multiple diversion grooves on the upper cover plate, and there are airtight air chambers between the diversion grooves. The average density of the upper cover plate and guide rods is less than 0.9×10 ³ kg/ ^m3 , the guide rod passes through the guide hole from the bottom of the lower well base to connect with the upper cover plate. When in use, the lower well base is poured into the concrete ground, and the small flow water is directly left from the diversion groove of the upper cover plate, and the water flows into the lower well along the wellhead For water wells, when the diversion groove of the upper cover plate cannot meet the flow rate of large flow water, the upper cover plate floats from the lower well seat, the lower end of the guide rod restricts the upper cover plate, and water flows into the wellhead from between the upper cover plate and the lower well seat , after the water flow rate is reduced, the upper cover plate descends, and the upper cover plate enters the groove of the well seat under the guiding action of the guide rod, which has great practicability.

Description

a sewer manhole cover

technical field

The invention relates to a sewer manhole cover, in particular to a non-blocking sewer manhole cover that automatically floats up when the flow is large and resets automatically when the flow is small.

Background technique

The sewer manhole cover, commonly known as the water grate, is the manhole cover of the rainwater wells on both sides of the road. The sewer manhole cover is a device that introduces rainwater into the rainwater well, and at the same time has the function of preventing debris from entering the sewer and preventing pedestrians and vehicles from falling into the rainwater well.

The sewer manhole cover is composed of a lower well seat and a cover plate, and the diversion groove in the middle of the cover plate is a channel for rainwater to flow. When it rains, plastic bags, waste paper, waste wood chips and other items will block the diversion groove in the middle of the cover plate due to the hydraulic transportation, causing the water inlet of the sewer manhole cover to be blocked, especially during heavy rains, rainwater wells in low-lying areas are often blocked . In the process of clogging the diversion channel that forms the manhole cover, debris is continuously accumulated, gradually reducing the flow of water, and finally causing a complete blockage. When the collection speed of rainwater exceeds the drainage capacity of the urban pipe network, the water in the rainwater wells in low-lying areas may even overflow outwards. When the water level drops, the well covers are constantly covered with debris, resulting in poor drainage or even complete blockage. If the well cover is removed, the workload of moving and covering back the well cover is large and unsafe, leaving a potential safety hazard in the stagnant water.

For example, stagnant water is often caused by the blockage of the sewer manhole cover under the overpass, and personal safety accidents will occur in severe cases.

After retrieving the patent literature, a kind of drainage well cover is provided in the patent document CN 201080650Y. The specific structure is as shown in Figure 3, comprising a well cover main body 1 with a water inlet on it, wherein a water tank 3 is provided below the well cover main body 1, and the water tank 3 is connected with the well cover main body 1 through a connecting body, and the center of the well cover main body 1 is opened, and there is a disk 2 at the opening, and a floating block 4 arranged in the water tank 3 is connected to the bottom of the disk 2. The water tank 3 is connected to the manhole cover main body 1 through four columns, and the side wall of the water tank 3 is provided with water outlet holes. The disc 2 is connected with the floating block 4 through the connecting frame 5, and the blocking rod 6 is fixed on the connecting frame 5. Because the total cross-sectional area of the diversion holes on the surface of the well cover main body 1 is small, when there is just water accumulation on the ground, if the diversion holes on the surface of the well cover main body 1 are blocked, the amount of water entering the water tank 3 will be insufficient, and the water will flow from the water outlet hole of the water tank 3. Flow out, floating block 4 just can't float up, and disc 2 can't be pushed upwards, can not produce the effect of design. When the collection speed of rainwater exceeds the drainage capacity of the urban pipe network, and the water in the rainwater wells in low-lying areas even overflows outwards, the floating block 4 rises to the highest point, and when the water level falls back, the floating block 4 blocks the inlet on the well cover main body 1. Nozzle, this technical scheme can not produce its design effect.

The drainage manhole cover of patent document CN 201080650Y has defects such as small displacement, complex structure, many moving parts, poor structural reliability, and inconvenient installation.

Contents of the invention

The technical problem solved by the present invention is: to solve the problem of blockage of the diversion channel of the manhole cover of the rainwater well in the low-lying land during heavy rain, especially a non-blocking sewer manhole cover that automatically floats up when the flow is large and resets automatically when the flow is small.

The technical scheme that the present invention solves technical problem is:

The invention discloses a sewer manhole cover, which consists of an upper cover plate, a guide rod and a lower well seat, and is characterized in that:

There are grooves on the inner side of the lower well seat;

The lower well base also includes a guide hole, and the guide hole is in the groove of the lower well base;

The middle of the groove of the lower well seat also includes the wellhead;

The outer edge of the upper cover plate is smaller than the groove of the lower well base, when the upper cover plate is put into the lower well base, the upper surface of the upper cover plate is equal to the upper surface of the lower well base;

There are multiple diversion grooves on the upper cover;

There is a sealed air chamber between the diversion grooves on the upper cover;

The average density of the upper cover plate and guide rods is less than 0.9×10 ³ kg/m ³ ;

The guide rod is connected with the upper cover plate through the guide hole from the bottom of the lower well base;

The diameter of the lowermost end of the guide rod at the bottom of the well block is larger than the guide hole;

When in use, the drainage manhole cover is installed on the ground, and the lower well seat is poured in the concrete ground. The small flow water is directly left from the diversion groove of the upper cover plate, and the water flows into the lower well along the wellhead. The diversion groove of the upper cover plate cannot meet the requirements. When the flow rate of large flow water is high, the upper cover plate floats from the lower well base, the lowermost end of the guide rod restricts the upper cover plate, and the water flows into the wellhead from between the upper cover plate and the lower well base. After the water flow rate decreases, the upper cover plate descends. The upper cover plate enters the groove of the well base under the guidance of the guide rod.

Principle of the present invention is:

The average density of the upper cover plate and the guide rod is less than that of water, and if the water of a large flow covers the upper cover plate, the upper cover plate and the guide rod can float in the water.

The key technology of the invention is: the average density of the upper cover plate and the guide rod is less than 0.9×10 ³ kg/m ³ .

Compared with the current patent certificate, the invention has the following beneficial technical effects: simple structure, large load-bearing capacity of the manhole cover, debris in the water cannot block the manhole cover, and the manhole cover will not float away when it floats up, protecting the safety of pedestrians, and has great practicability.

Description of drawings

The present invention will be further described below in conjunction with drawings and embodiments.

Figure 1 is a schematic diagram of the present invention.

FIG. 2 is a schematic cross-sectional view along line A-A of FIG. 1 .

Fig. 3 is a schematic diagram of the prior art.

Among Fig. 1 and Fig. 2 1. diversion groove, 2. upper cover plate, 3. airtight air chamber, 4. guide rod, 5. lower well seat, 6. groove, 7. guide hole, 8. well head.

Among Fig. 3 1. well cover main body, 2. disc, 3. water tank, 4. floating block, 5. connecting frame, 6. retaining rod.

Detailed ways

The present invention will be further described below in conjunction with specific examples, but the scope of protection required by the present invention is not limited to the scope described in the specific examples.

A kind of sewer well cover disclosed as shown in Fig. 1 and Fig. 2 comprises an upper cover plate 2, a guide rod 4, and a lower well seat 5, and is characterized in that:

There is a groove 6 on the inner side of the lower well seat 5;

The lower well base 5 also includes a guide hole 7, and the guide hole 7 is in the groove 6 of the lower well base 5;

The middle of the groove 6 of the lower well block 5 also includes a wellhead 8;

The outer edge of the upper cover plate 2 is smaller than the groove 6 of the lower well base 5, when the upper cover plate 2 is put into the lower well base 5, the upper surface of the upper cover plate 2 is equal to the upper surface of the lower well base 5;

There are multiple guide grooves 1 on the upper cover plate 2;

There is a sealed air chamber 3 between the guide grooves 1 on the upper cover plate 2;

The average density of the upper cover plate 2 and the guide rod 4 is less than 0.9×10 ³ kg/m ³ ;

The guide rod 4 is connected to the upper cover plate 2 through the guide hole 7 from the bottom of the lower well base 5;

The diameter of the lowermost end of the guide rod 4 at the bottom of the lower well block 5 is larger than the guide hole 7;

During use, this drainage well cover is installed on the ground, and the lower well base 5 is poured in the concrete ground, and the small flow water is directly left from the diversion groove 1 of the upper cover plate 2, and the water flows into the lower well along the wellhead 8, and the upper cover plate 2 When the diversion groove 1 cannot meet the flow rate of large flow water, the upper cover plate 2 floats from the lower well base 5, and the lowermost end of the guide rod 4 restricts the upper cover plate 2, and water flows in from between the upper cover plate 2 and the lower well base 5 At the wellhead 8, after the water flow is reduced, the upper cover plate 2 descends, and the upper cover plate 2 enters the groove 6 of the well base 5 under the guidance of the guide rod 4 .

The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto. Within the scope of knowledge possessed by those skilled in the art, various Changes, various changes made by those skilled in the art starting from the above ideas without creative work, all fall within the protection scope of the present invention.

Claims (1)

1. a well cover for sewer, be made up of upper cover plate (2), guide rod (4), seat of going into the well (5), during use, this well cover for sewer is arranged on ground, seat (5) of going into the well is cast in concrete surface, rill water gaging directly stays from the guiding gutter (1) of upper cover plate (2), water flows into lower well along well head (8), it is characterized in that:

The inner side fluted (6) of described seat of going into the well (5);

Described seat of going into the well (5) also comprises pilot hole (7), and pilot hole (7) is in the groove (6) of seat of going into the well (5);

The centre of the groove (6) of described seat of going into the well (5) also comprises well head (8);

The outer of described upper cover plate (2) is less than the groove (6) of seat of going into the well (5), and when upper cover plate (2) puts into seat of going into the well (5), the upper surface of upper cover plate (2) is equal with the upper surface of seat of going into the well (5);

Described upper cover plate (2) there are many guiding gutters (1);

Sealed gas chamber (3) is had between guiding gutter (1) on described upper cover plate (2);

Described upper cover plate (2) and the averag density of guide rod (4) are less than 0.9 × 103 kg/m 3;

Described guide rod (4) is connected from the pilot hole (7) that passes beneath of seat of going into the well (5) with upper cover plate (2);

Described guide rod (4) diameter bottom below seat of going into the well (5) is greater than pilot hole (7);

Described well cover for sewer is mounted in the well cover for sewer of low-lying land, when the guiding gutter (1) of upper cover plate (2) can not meet the flow velocity of large discharge water, upper cover plate (2) floats in seat of going into the well (5), the upper cover plate of restriction bottom (2) of guide rod (4), water flows into well head (8) between upper cover plate (2) and seat of going into the well (5), after discharge reduces, upper cover plate (2) declines, upper cover plate (2) enters in the groove (6) of well seat (5) under the guide effect of guide rod (4), when described upper cover plate (2) floats, well cover for sewer does not take catch-basin latus rectum.