JP5742498B2 - Sediment pressure feeding device - Google Patents

Description

  The present invention relates to a pressure-feed processing apparatus for residue used in a sewage treatment facility. More specifically, the present invention relates to a residue pressure feed processing apparatus that performs processing by intermittently feeding and collecting the residue collected and collected by a sewage treatment facility by a plunger that reciprocates.

  Usually, sewage, rainwater, etc. are sent to a sewage treatment facility as sewage for treatment. The sewage such as sewage and rainwater includes various sewage substances other than sand and earth, for example, life substances discharged from homes, wood pieces, vinyl pieces, cloth pieces, dead leaves and the like. Sewage such as sewage and rainwater is collected, and after these sewage substances are removed, they are discharged into rivers. The recovered sewage material is subjected to incineration or the like. A sewage treatment facility is required for these treatments, and this treatment is performed, for example, with the following facilities.

  That is, the collected sewage is stored in a sand basin, sand and soil are removed, and sewage substances in the sewage, that is, dusts are scraped out by, for example, a dust remover and accumulated in a hopper as a residue. The residue of the hopper falls and is taken into the pressure feeding device by a certain amount and is pumped by the action of the reciprocating pump. The pumped residue is temporarily suspended and finally subjected to incineration and other processing.

  As a pressure feeding device in the above, a screen pressure feeding processing device as described in Patent Document 1 has been proposed.

  The screen residue pressure feed processing device described in Patent Document 1 is a device that intermittently feeds and processes the residue with a plunger that reciprocally moves the residue, as shown in FIG. 1 and FIG. The residue pressure feed processing apparatus 1 includes a main body 2 (mounted on the base 3) provided in a discharge port 57a of a hopper 57 that accumulates the transferred sewage residue 54, and is provided in the main body 2. The accumulation chamber 24 that takes in the residue 54 from the discharge port 57a and the residue blade member 9 (shape surface 9a) fixed to the pressing body 8 with the bolt 10 at the end, passes through the accumulation chamber 24. And a cylinder body 7 that is reciprocally movable, and a cylindrical first support body 6 that is provided in the main body 2 and that is slidably supported by the first sliding member 17 on the outer side of the cylinder body 7 (a first body integral with the main body 2). 1 is fixed to the support plate 4 with bolts 5) A pressure chamber (first pressure chamber 16, second pressure chamber 19) is formed between the cylinder body 7 and a pressure fluid (first pressure chamber 16, second pressure chamber 19) communicating with the pressure chamber (first pressure chamber 16, second pressure chamber 19). The second support member 14 (the second support plate 13 at the rear of the main body 2) has a hydraulic oil passage (communication passages 22 and 23) and slidably supports the cylinder body 7 by the second sliding member 18. Is fixed via a stay member 15) and a cylindrical third support 26 (a third front part of the front of the main body 2) that supports the cylinder body 7 that is provided in the main body 2 and moves through the accumulation chamber 24. The inner diameter of the pressing plate 8 is substantially the same as the outer diameter of the pressing body 8), and the inner diameter of the third supporting body 26 is provided on the accumulation chamber 24 side. The blade-shaped member 28 and the end of the third support 26 on the residue discharge side Which are pumped has been to cut off the residue, the opening and closing device 29 repeats the passage comprises (door 30, the hole 30a, the peripheral edge portion 30b of the hole, the stay 32) and.

  Incidentally, FIG. 1 shows a state before the cylinder body 7 is pumped, and FIG. 2 shows a state after the cylinder body 7 is pumped.

  And this residue pressure feed processing apparatus 1 performs the following operation | movement by the above structures.

  When the residue 54 accumulated in the hopper 57 and taken into the accumulation chamber 24 is pressure-fed, it is in the state of FIG. 1, but when hydraulic fluid is supplied to one communication path 22, The cylinder body 7 moves forward toward the third support body 26 side, that is, the state shown in FIG. Since the residue 54 is accumulated and filled in the accumulation chamber 24, the residue 54 is pushed out while being compressed by the blade member 9.

  When the blade member 9 reaches the vicinity of the blade-shaped body 28 on the third support 26 side, the cylinder body 7 is rotated by a pin-long groove mechanism (not shown). At this time, the force on the blade member 9 side of the residue 54 is applied in the rotational direction and the forward movement direction while being sandwiched between the blade-shaped member 28 and the blade member 9. This forced rotation and forward movement cause a relative displacement between the shape surface 9a of the blade member 9 and the blade-shaped member 28, and the residue 54 is cut. As a result, the blade member 9 and the residue 54 are easily separated.

  The blade member 9 continues to pump the inside of the third support 26 by the movement of the cylinder body 7 and feeds the residue 54. Since the open / close door 30 of the open / close device 29 at the rear end portion in the third support 26 is open, the pressure-feed residue 54 is smoothly discharged to the outside as it is. When the blade member 9 reaches the position of the open / close door 30, the movement of the cylinder body 7 stops. When the cylinder body 7 moves forward, the residue 54 of the hopper 57 remains on the cylinder body 7.

  Next, the door 30 is closed. Since the peripheral edge 30b of the hole 30a is in a sharp state, the door 54 is closed by smoothly cutting the residue 54 that has been compressed and fed (see FIG. 2). State shown). If this door 30 is closed, the cylinder body 7 moves back to its original position. At this time, since the discharge port 57a of the hopper 57 is open, the residue 54 falls from the hopper 57 and is taken into the accumulation chamber 24. It is. At this time, the opening / closing door 30 of the opening / closing device 29 is opened again. If the cylinder body 7 is moved again in this state, the same operation as described above is repeated. In this way, the residue 54 of the hopper 57 is repeatedly intermittently taken into the accumulation chamber 24 by a fixed amount and is pumped to the next process.

JP 2006-212625 A

  In a sewage treatment facility that treats sewage that has been sent by a combined sewer that sends sewage and rainwater together through a single conduit, as described above, the screen pressure treatment device (FIG. 1) is described. 2), when the residue is transported, sometimes it becomes impossible to transport the residue, and there is a high probability that it becomes impossible to transport especially in rainy weather. This was thought to be due to the change in the properties of the screen residue when it was fine and when it was raining, and the amount of coarse material (for example, long objects such as wood) mixed in the screen residue when it was raining.

  The present invention has been made in view of the circumstances as described above, and can reliably transport a residue even when a coarse material (for example, a long material such as wood) is mixed in the residue. An object of the present invention is to provide a residue pressure feed processing apparatus.

  In order to solve the above-mentioned problems, the present inventors firstly wondered why, in the residue transporting apparatus described in Patent Document 1, if a coarse material is mixed in the residue, it becomes difficult to convey. investigated.

  As a result, in the residue pressure feed processing apparatus described in Patent Document 1, the inner bottom surface 26a of the third support 26 and the bottom plate 24a of the accumulation chamber 24 have been shown so far, as shown in the partial enlarged view of FIG. The step amount 60 of the step portion 60 with respect to the inner surface side peripheral edge portion 24b is large (for example, δ = 15 mm), and a coarse article (coarse residue) 54A is caught on the step portion 60, and the coarse residue 54A is removed from the blade member. It was found that the cutting pressure required for cutting at 9 increased, and when it exceeded the limit, cutting was impossible and conveyance was impossible.

  Therefore, as a result of further studies, the present inventors have found that if the step amount δ of the stepped portion 60 is set to 9 mm or less, the stepped portion 60 becomes coarse and the residue 54A is not caught, and the coarsely formed residue 54A is cut off by the blade. It has been found that the member 9 can be easily cut and the occurrence of inability to convey can be prevented.

  The present invention has been made based on the above findings and has the following characteristics.

  [1] A pressure-feeding treatment apparatus for sewage used in a sewage treatment facility, comprising: a main body provided at a discharge port of a hopper that accumulates the sewage sewage that has been conveyed; and a drain provided in the main body. An accumulation chamber that takes in the residue from the outlet, a cylinder body that has a residue blade member at the end and can be reciprocated through the accumulation chamber, and is slidable outside the cylinder body provided in the main body. A pressure chamber is formed between the cylindrical first support body to be supported and the cylinder body provided on the main body, and a pressure fluid passage communicating with the pressure chamber is provided to slidably support the cylinder body. A second support body that is provided in the main body and that supports the cylinder body that moves through the accumulation chamber and that moves in the accumulation chamber; Opening and closing device that repeatedly blocks and passes the dried residue The bottom plate of the accumulation chamber is arranged such that the step between the inner bottom surface of the third support and the inner peripheral edge of the bottom plate is within 9 mm. Shishikaga pressure feed processing equipment.

  [2] The screen pressure feed processing apparatus according to [1], wherein a bottom plate of the accumulation chamber is concave.

  In the present invention, even if a coarse material (for example, a long material such as wood) is mixed in the residue, the residue can be reliably conveyed.

It is sectional drawing of the whole structure of the residue pressure feeding processing apparatus in one Embodiment of this invention, and has shown the state before a cylinder body is pumped. It is sectional drawing of the whole structure of the residue pressure feed processing apparatus in one Embodiment of this invention, and the state after the cylinder body is pumped is shown. It is the elements on larger scale of the conventional residue pressure feed processing apparatus. It is the elements on larger scale of the residue pressure feed processing apparatus in one Embodiment of this invention. It is a figure which shows the state which is cutting the coarse residue with a blade member.

  An embodiment of the present invention will be described with reference to the drawings.

  The overall configuration and operation of the residue pressure feed processing apparatus according to the embodiment of the present invention are the same as those described with reference to FIGS. To do.

  In the embodiment of the present invention, as shown in a partially enlarged view in FIG. 4, the stepped portion 60 between the inner bottom surface 26 a of the third support 26 and the inner surface side peripheral edge portion 24 b of the bottom plate 24 a of the accumulation chamber 24. The bottom plate 24a is arranged so that the step amount δ is 9 mm or less.

  Here, Table 1 shows the result of comparing the cutting state when cutting the coarse residue 54A with the blade member 9 while changing the step amount δ of the step portion 60 to 15 mm, 9 mm, and 3 mm. As the coarse residue 54A, wood (cross-sectional dimension: 40 mm × 25 mm) and a PVC pipe (outer diameter: φ60 mm) were used.

  As shown in Table 1, when the step amount δ is 15 mm, the PVC pipe can be cut (Δ: the pressure of the hydraulic oil during cutting is less than 12 MPa), but the wood cannot be cut (×: A hydraulic oil pressure of 12 MPa or more is necessary).

  On the other hand, when the level difference δ was 9 mm, both the wood and the PVC pipe could be cut (Δ: the pressure of the hydraulic oil at the time of cutting was less than 12 MPa). Further, when the step amount δ was 3 mm, cutting was good for both the wood and the PVC pipe (◯: the pressure of the hydraulic oil at the time of cutting was less than 9 MPa).

  When the step amount δ is 15 mm, as shown in FIG. 5A, the coarse residue 54A is caught by the step portion 60 and closes the inlet of the third support 26, This is because cutting resistance increases. When the step amount δ is 9 mm or less, as shown in FIG. 5B, the coarse residue 54A is not caught by the step portion 60, and the third support 26 This is because the cutting resistance is reduced because the entrance is not blocked.

  Therefore, in this embodiment, since the step amount δ of the step portion 60 is 9 mm or less, the coarse portion 54A is not caught on the step portion 60, and the coarse portion 54A is easily cut by the blade member 9. Become so. As a result, even if the coarse residue 54A is mixed with the coarse residue 54, the residue 54 can be reliably conveyed.

  In this embodiment, the bottom plate 24a of the stacking chamber 24 is a flat plate. However, in the present invention, the step between the inner bottom surface 26a of the third support 26 and the inner peripheral side edge 24b of the bottom plate 24a of the stacking chamber 24. Since the amount δ need only be 9 mm or less, the bottom plate 24a of the accumulation chamber 24 may be a concave surface such that the inner peripheral edge 24b is lifted upward.

DESCRIPTION OF SYMBOLS 1 Screen pressure feed processing apparatus 2 Main body 3 Base 4 1st support plate 5 Bolt 6 1st support 7 Cylinder body 8 Pressing body 9 Blade member 9a Shape surface of blade member 10 Bolt 13 2nd support plate 14 2nd support 15 Stay member 16 First pressure chamber 17 First sliding member 18 Second sliding member 19 Second pressure chamber 22 Communication passage 23 Communication passage 24 Accumulation chamber 24a Bottom plate of accumulation chamber 24b Inner surface side peripheral edge portion of bottom plate of accumulation chamber 25 3 Support Plate 26 3rd Support Body 26a Inner Bottom Surface of 3rd Support Body 27 Bolt 28 Blade-Shaped Member 29 Opening / Closing Device 30 Opening Door 30a Hole 30b Periphery of Hole 32 Stay 54 Slag 54A Coarse Objects in Sediment 57 Hopper 57a Ejection port of hopper 60 Step portion between the inner bottom surface of the third support and the inner peripheral edge of the bottom plate of the accumulation chamber

Claims (1)

A pressure treatment device for sewage used in a sewage treatment facility, and a main body provided at a discharge port of a hopper for collecting the sewage sewage that has been conveyed,
A collecting chamber provided in the main body and taking in the residue from the outlet;
A cylinder body having a blade member for residue at the end and capable of reciprocating through the accumulation chamber;
A cylindrical first support body provided on the main body and slidably supporting the outside of the cylinder body;
A second support body which is provided in the main body and forms a pressure chamber between the cylinder body and has a passage for a pressure fluid communicating with the pressure chamber and slidably supports the cylinder body;
A cylindrical third support that is provided in the main body and supports the cylinder body that moves through the accumulation chamber;
A blade-shaped member that is provided at an end portion of the third support plate that supports the third support body and that matches the inner diameter portion of the third support body ;
In a residue pressure feed processing apparatus provided with an opening and closing device that repeatedly blocks and passes the residue of a residue that is provided at the end of the residue support side of the third support and is pumped.
The residue pressure feed processing apparatus, wherein the bottom plate of the accumulation chamber is disposed so that a step between the inner bottom surface of the third support and the inner peripheral edge of the bottom plate is 3 mm or more and 9 mm or less.

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