JPS596883Y2 - Cart-driven sludge scraping device in sludge settling tank - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a cart-driven sludge scraping device in a sludge settling tank.

As shown in FIG. 1, the conventional sludge scraping device of this type has a scraper 02 for scraping sludge attached to a cart 01, and the cart is moved in the direction of the arrow by a winder 05 via a rope 03. 0
After collecting the liquid in the tank 6, the on-off valve 07 is opened to discharge it to the outside of the tank.

When moving the cart 01 backward, the scraper 02 is rotated horizontally by a drive means (not shown), and the scraper 02 is rotated horizontally.
The trolley 01 is moved back while being separated from the bottom of the tank for an appropriate period of time.

At the initial stage when the scraper 02 attached to the cart 01 scrapes up the sludge at the bottom of the tank, due to the structure of the cart 01, the scraper 02 cannot scrape up the sludge by the distance A in Figure 1. There will inevitably be some residue left in area A.

Since the sludge in this unscraped portion accumulates over time, the conventional apparatus has a drawback in that the inside of the tank must be periodically drained and cleaned.

The present invention was proposed with the aim of providing a sludge scraping device that eliminates the drawbacks of the conventional devices and prolongs the tank cleaning cycle. A shaft rod 11 has one end rotatably supported on a bearing 11a provided at a suitable position on the upper surface of the underframe of the truck 1, and a support rod 10 has one end fixed to the other end of the coaxial rod 11. A weight 10 is attached to the other end of a and always applies a clockwise urging force to the shaft 11, and a weight 10 is fixed to the middle part of the shaft 11 and is rotatable on the side wall of the main body of the truck 1. A weight 13 is pivoted on the shaft and has a counterclockwise biasing force.
a stopper 12 having a sloped bottom portion; a locking member 11b that engages with the stopper 12 and restricts the biasing force of the weight 10 against the shaft 11; and a weight 10 of the shaft 11.
A lever 8 is fixed at one end to the end opposite to the mounting side of the support rod 10a, and has a roller 9 at the other end. The shaft rod 11 is rotated counterclockwise by overcoming the biasing force, and engages with the guide plate 17 fixed at a proper position on the inner wall of the sludge settling tank and the inclined surface of the stopper 12. , the stopper 12 is rotated clockwise against the weight 13 to release the engagement between the locking member 1lb and the stopper, and the guide pin 18 fixed at a suitable position on the inner wall of the sludge settling tank; A pair of left and right support frames F whose front ends are fixed to the rear end of the truck 1 and which are inclined so that the rear ends are positioned downward as they move toward the rear end; an auxiliary scraper 15 rotatably supported on the shaft of the shaft 11; an arm 14 having one end fixed to the extending end of the shaft support of the shaft 11 and the other end pin-connected to one end of the lever 16; A connecting member 15 whose other end is connected to the auxiliary scraper 15 by a pin.
This invention relates to a cart-driven sludge scraping device in a sludge settling tank, characterized by comprising: (b).

Hereinafter, the present invention will be specifically explained with reference to embodiments shown in FIGS. 2 to 5.

In FIG. 2, reference numeral 1 denotes a cart equipped with a scraper 2 for scraping sludge. While the scraper 5 moves the sludge forward in the direction of the arrow, the scraper 2 scrapes up the sludge at the bottom of the tank toward the sludge pit 6 and collects it inside the sludge pit 6. Then, the on-off valve 7 is opened and the sludge is removed from the sludge pit 6. sludge is discharged outside the tank.
Furthermore, when the truck 1 is retreating, the scraper 2 is placed in a horizontal state, which is almost the same as in the conventional device described above.

Reference numeral F denotes a pair of inclined support frames whose front ends are fixed to both sides of the rear end of the truck 1, and whose rear ends are inclined so as to be located appropriately below the front ends, and which are located under the inclined support frames. Both end shaft portions 15a of each rear end auxiliary scraper 15 are rotatably supported.

(See FIG. 5; however, only one shaft portion 15a is shown in the figure.

) 11 is a bearing 11 a fixed on the upper surface of the car frame of the truck 1
The base of an arm 14 is fixed to one end of the coaxial rod 11, and a connection whose one end is attached to the auxiliary scraper 15 is fixed to the other end of the arm 14. The other end of the link 16 that is pin-connected to the member 15b is pin-connected.

Reference numeral 10 denotes a heavy peg attached to the tip of the support member 10a to which the base of the other end of the connecting rod 11 is fixed.
0 always urges the shaft rod 11 to rotate clockwise, and due to this urging force, the auxiliary scraper 15 is always in a vertical position via the arm 14, link 16, and member 15b, that is, the sludge at the bottom of the tank is removed. It is now in a raking position.

(See FIG. 3) 11b is fixed to the middle part of the shaft 11 as shown in FIG. This is a locking member that has a stepped portion that restricts the biasing force.

The stopper 12 is rotatably supported on one side of the vehicle frame of the truck 1, has a retaining portion that engages with the stepped portion of the locking member 1lb, and has an inclined surface on the lower surface as shown in FIG. In addition, it is provided with a heavy stud 13 that always urges the stopper 12 counterclockwise around its axis.

8 is the heavy stud 10 at the end of the shaft 11 on the side where the heavy stud 10 is attached.
This lever is fixed at one end to the opposite side of the support rod 10a, and has a roller 9 rotatably supported at the other end.

Reference numeral 17 denotes a guide plate fixed at a suitable location on the inner wall T1 in the longitudinal direction (traveling direction of the trolley) of the sludge settling tank T, and having a sloped portion 17a and a horizontal portion 17b. When the front end reaches the stop position, the roller 9 of the lever 8 descends along the slope of the guide plate 17 overcoming the biasing force of the heavy reef 10, causing the shaft rod 11 to rotate counterclockwise. At the same time, the stopper 12 engages with the stepped portion of the locking member 11b by the biasing force of the heavy stud 13, so that the shaft rod 11 is placed in an interrotated state in which it cannot rotate.

In this case, by rotating the shaft rod 11 in the counterclockwise direction, the auxiliary scraper 15 takes the horizontal position shown by the solid line in FIG. 4 via the arm 14, the link 16, the connecting member 15b, etc. At the same time, the scraper 2 is also brought into the horizontal position shown by the two-dot chain line in the figure by another drive mechanism.

In addition, the support frame F, the lever 14, the link 16, the connecting member 1
The dimensions and shape of the member 5b are appropriately set so that when the cart 1 is at the rearmost position of the sludge settling tank T as shown in FIG. .

In addition, 18 in FIG. 5 is a guide pin fixed at a suitable position on the inner surface of the side wall T1 of the sludge settling tank, and the guide pin 18 is fixed to the inclined surface of the stopper 12 just before the cart 1 moves backward and reaches the state shown in FIG. 3. The guide pin 18 engages and rotates the stopper 12 clockwise against the heavy stud 13, causing the locking member 1lb and the stopper 12 to rotate.
The auxiliary scraper 15 is held in a vertical position where it can scrape up sludge by the biasing force of the heavy plow 10.

Furthermore, reference numeral 19 in FIG. 5 denotes stoppers (only one of which is shown in the figure) projecting from both inner sides of the rear end portion of the support frame F, as shown in the same figure.

), the stopper 19 has the role of bearing the sludge scraping resistance of the auxiliary scraper 15.

One embodiment of the device of the present invention is constructed as described above, and the sludge on the bottom of the sludge settling tank T is collected in the sludge pit 6 and further discharged to the outside of the tank via the on-off valve 7. Well,
First, the trolley 1 is positioned at the position shown in FIG. 3, and the rope 3 is wound up by the winder 5 (see FIG. 2) as usual, and the trolley 1 is moved forward in the direction of arrow B.

In this case, the scraper 2 scrapes up the sludge on the bottom of the tank other than area A in FIG.
As a result, it is scraped up to the position A+i in FIG.

The sludge scraped up in this way is left in the position when the trolley 1 moves back, but when the trolley 1 moves forward again,
The sludge is collected by the scraper 2 into the sludge pit 6 together with the sludge other than the area A, and is finally discharged to the outside of the tank via the on-off valve 7.

Since the device of the present invention has the above-mentioned structure and function, according to the present invention, (1) there is no leftover part of the sludge in the sludge settling tank;
Therefore, cleaning the inside of the tank can be carried out over a long period of time, and maintenance costs can be reduced.

(2) Since the auxiliary scraper 15 is operated and locked by a relatively simple mechanism, there is no risk of malfunction and it operates reliably.

(3) It can be applied as is to the conventional trolley-driven sludge scraping device.

(4) By appropriately changing the mounting position of the guide plate 17,
The effective operating range of the auxiliary scraper can be set freely.

The following practical effects can be mentioned.

[Brief explanation of drawings]

Fig. 1 is a schematic explanatory diagram of a conventional device, Figs. 2 to 5 are schematic explanatory diagrams of an embodiment of the present invention, Fig. 2 is an explanatory diagram of the overall procedure, and Fig. 3 shows that the cart is a sludge settling tank. FIG. 4 is a schematic explanatory view when the cart is at the frontmost position, and FIG. 5 is a partial perspective view of the main part.

Claims (1)

[Scope of utility model registration request] An axial rod 1L whose one end is rotatably supported on a bearing 11a provided at a suitable position on the upper surface of the underframe of the cart 1 of the cart-driven sludge scraping device in a sludge settling tank, and the other end of the coaxial rod 11 A weight 10 is attached to the other end of a support rod 10a whose one end is fixed, and always applies a clockwise urging force to the shaft rod 11; Trolley 1
It is rotatably supported on the side wall of the underframe, and has a weight 13 having a biasing force in a counterclockwise direction. a locking member 11 b that restricts the biasing force of the weight 10 against the
The support rod 10a of the weight 10 of the shaft rod 11 has one end fixed to the end opposite to the mounting side, and has a roller 9 at the other end.The lever 8 guides the roller 9 of the lever 8, weight 10
The guide plate 17 fixed at a suitable position on the inner wall of the sludge sedimentation tank and the stopper 12 rotate the shaft 11 counterclockwise by overcoming the clockwise biasing force of the shaft 11.
The stopper 12 is rotated clockwise against the weight 13, and the engagement between the locking member 11b and the stopper is released, and the stopper 12 is fixed in place on the inner wall of the sludge settling tank. A guide pin 18 is provided, the front end of which is fixed to the rear end of the truck 1,
a pair of left and right support frames F that are inclined so that the rear ends are positioned downward as they move toward the rear ends; an auxiliary scraper 15 that is rotatably supported on the shafts of the rear ends of both support frames F;
An arm 14 whose one end is fixed to the extending end of the shaft support of the shaft rod 11 and whose other end is connected by a pin to one end of the lever 16, and a connecting member which connects the other end of the lever 16 to the auxiliary scraper 15 with a pin. 15b. A cart-driven sludge scraping device for a sludge settling tank.