JP5048726B2 - Sediment separation dehydrator - Google Patents

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a residue separating and dewatering machine, and in particular, a single drive mechanism including a cylindrical casing that performs solid-liquid separation of sewage and a screw that is inserted into the cylindrical casing and conveys the residue. The present invention relates to a residue separation and dehydrator that is configured to efficiently perform solid-liquid separation and dehydration of contaminants (hereinafter referred to as “shigaku”) contained in sewage by being rotated in reverse with each other.

  Conventionally, the present applicant has proposed a residue separation and dehydrator disclosed in Patent Document 1 as an apparatus for separating impurities contained in wastewater from wastewater and dewatering the residue.

  By the way, this kind of residue separation dehydrator is, for example, as shown in FIG. 2 to FIG. 3, a cylindrical shape configured to perform solid-liquid separation of sewage, and a conical cylindrical portion so that one end side has a slightly smaller diameter. A cylindrical casing 1 is inserted into a cylindrical casing 1 through which the residue 2 separated from the solid and liquid is sent out, and a screw 2 for transferring the residue is inserted into the cylindrical casing 1 from the conical cylindrical portion side of the cylindrical casing through the motor M and the planetary gear unit E. The casing 1 and the screw 2 are driven so as to rotate in the opposite directions, and sewage is supplied from the end on the non-driving side, and the sewage containing the residue is conveyed toward the drive side. When separating and draining sewage out of the draining screen and transporting the residue to the drive side, it is dehydrated by overpressure by the action of the back pressure resistor plate arranged at the end of the draining screen, and then the drive side end So that it is discharged outside the cylindrical casing. It is configured.

For this reason, in order to rotate the cylindrical casing 1, it is necessary to connect the internal gear of the planetary gear unit E and the cylindrical casing 1 via a connecting mechanism, but this part also serves as a place for dewatering and discharging the residue. Since the discharge hole is formed, it is impossible to obtain sufficient strength against torsion in the connecting member, so the strength against torsion is secured by using a thick-walled large-diameter member for this cylindrical connecting member. There was a problem that the planetary gear unit became large.
Further, when dewatered and the residue is discharged and dropped as a lump, there is a problem that the residue discharge hole formed in the connecting member is blocked and the residue cannot be discharged stably.

JP 2009-142723 A

  In view of the problems of the conventional screen residue separator and dehydrator, the present invention makes the drive mechanism small and simple by using a bevel gear for the cylindrical casing and the screw drive mechanism that rotate in reverse to each other, An object of the present invention is to provide a residue separating and dewatering machine in which dewatering and discharging of the residue can be performed stably by setting the discharge port to the non-driving side.

  In order to achieve the above object, the residue separator and dewatering machine of the present invention has a screw inserted into a cylindrical casing in which a screen portion is formed so as to drain from the peripheral surface, and the sewage introduced into the cylindrical casing. In the residue separator and dewatering machine, the cylindrical casing and the screw are driven to rotate reversely with each other by a drive mechanism using a bevel gear. It is configured as described above.

  In this case, a drive mechanism using a bevel gear is arranged opposite to each other on a bevel pinion driven by an electric motor, and meshes two bevel gears respectively connected to a cylindrical casing and a screw so as to rotate in reverse with each other. Can be configured.

  Moreover, it can comprise so that a screw shaft may be made hollow and sewage may be supplied in a cylindrical casing from a counter drive side edge part.

  Moreover, a sewage discharge hole can be formed in the screw shaft in the cylindrical casing.

  According to the residue separating and dewatering machine of the present invention, a screw is inserted into a cylindrical casing having a screen portion so as to drain from the peripheral surface, and the residue in the wastewater introduced into the cylindrical casing is screened. In the residue separating and dewatering machine, the cylindrical casing and the screw are configured to be driven to rotate reversely with each other by a drive mechanism using a bevel gear. Thus, the drive mechanism can be reduced in size, and can be strengthened without forming a discharge port for discharging the residue in the connecting drive portion of the cylindrical casing and the screw.

  In addition, a drive mechanism using a bevel gear is arranged to be opposed to each other on a bevel pinion driven by an electric motor, and meshes two bevel gears respectively connected to a cylindrical casing and a screw, and is configured to rotate reversely to each other. As a result, the drive mechanism can be simplified, and the cylindrical casing and the screw can be firmly supported while ensuring smooth rotation.

  In addition, by making the screw shaft hollow and supplying sewage into the cylindrical casing from the end on the non-driving side, the sewage supply into the cylindrical casing can be reliably dehydrated and hindered from discharging the residue. Can be done without giving.

  Moreover, by forming the sewage supply hole in the screw shaft in the cylindrical casing, the sewage can be reliably supplied into the cylindrical casing.

It is sectional drawing which shows one Example of the residue separation dehydrator of this invention. It is explanatory drawing which shows the conventional residue separation dehydrator. It is a front view which shows the cylindrical casing of the conventional residue separation dehydrator.

  Hereinafter, embodiments of the residue separating and dehydrating machine of the present invention will be described with reference to the drawings.

FIG. 1 shows an embodiment of a residue separation dehydrator according to the present invention.
This screen separator dewatering machine A has a cylindrical casing 1 in which a screen portion is formed so as to be drained from a peripheral surface so as to be rotatable in a main body casing K, and is transported while compressing the screen in the cylindrical casing 1. The screw 2 for transporting the residue is rotatably inserted and disposed, and the cylindrical casing 1 and a drive mechanism D using a bevel gear are disposed at one end of the screw 2. The screws 2 are configured to be driven to rotate in reverse to each other.

  The main body casing K is preferably structured so that the cylindrical casing 1 and the screw 2 can be sealed so that the sewage to be treated is not scattered around, and the cylindrical casing 1 is gently inclined so that the horizontal or non-driving side is lowered. Thus, the cylindrical casing 1 is clogged so that the cleaning nozzle N is disposed above the cylindrical casing 1 and the cleaning water is sprayed toward the outer peripheral surface of the cylindrical casing 1. Washing is performed so as not to occur, and the drainage port Ka for draining the washed water after washing and the sewage separated into solid and liquid by the cylindrical casing 1 is formed.

In addition, as shown in FIG. 1, the cylindrical casing 1 includes a series of a conical dewatering portion 12 formed in a conical shape so as to be slightly smaller in diameter than the cylindrical portion on one end side of the cylindrical portion that becomes the draining screen portion 11. The cylindrical casing is formed so that the residue can be dehydrated by the conical portion so that the sewage introduced in the draining screen portion 11 can be separated into solid and liquid and drained into the main body casing K. A back pressure resistance plate 3 is provided so that dewater is discharged from the conical end portion of the residue dewatering portion 12 and the residue is discharged.
The cylindrical casing 1 is rotatably supported by a bearing which is a rotation support device on the drive mechanism D side and a bearing which is a support device disposed in the main body casing K.

The screw 2 is configured to wind a screw blade 22 that turns around the outer periphery of a screw shaft 21 having a hollow inside. The blade pitch of the screw 2 may be uniform over the entire length of the screw shaft 21, or the separation zone for solid-liquid separation of sewage and the dehydration zone for dewatering residue may be made different depending on the action. The end of the screw blade 22 is longer than the residue discharge port 13 of the cylindrical casing 1 so that the residue can be reliably dehydrated and discharged.
Further, the screw shaft 21 can supply sewage from the end portion on the non-driving side, and preferably one or two or more sewage discharge ports are formed in the cylindrical casing in the vicinity of the closed inner end portion of the cylindrical casing 1. 23, the sewage supplied into the hollow screw shaft is discharged and supplied into the cylindrical casing.

The cylindrical casing 1 and the screw 2 are connected to a drive mechanism D using a bevel gear disposed at one end, and are driven so as to rotate in reverse.
As shown in FIG. 1, the drive mechanism D includes a bevel pinion 4 driven by an electric motor M in a gear box of the drive mechanism D, a bevel gear 5 for driving a cylindrical casing, and a bevel gear 6 for driving a screw. The two bevel gears are arranged so as to mesh with each other so that the cylindrical casing 1 and the screw 2 rotate counterclockwise.

  The bevel gear 5 for driving the cylindrical casing is connected to the base end portion of the cylindrical casing 1 through a cylindrical connecting shaft member 8 rotatably supported by a bearing 7, and is also used for driving the screw. 6 is connected to the base end portion of the screw shaft 21 through a cylindrical screw shaft coupling member 9. The screw shaft connecting member 9 is inserted so as to penetrate the connecting shaft member 8 of the cylindrical casing 1 and is rotatably supported in the connecting shaft member 8 via a bearing 10.

Next, the operation of the residue separation dehydrator configured as described above will be described.
When the bevel pinion 4 directly connected to the electric motor M is driven to rotate by the drive of the electric motor M, the two bevel gears 5 and 6 for driving the cylindrical casing and the screw driving meshed with the bevel pinion 4 are both driven to form a cylinder. The casing 1 and the screw 2 rotate counterclockwise.
In this case, since the two bevel gears 5 and 6 mesh with each other so as to rotate in opposite directions with respect to the bevel pinion 4 in one drive mechanism, the bevel pinion 4 rotates between the cylindrical casing 1 and the screw 2. The drive shaft rotates smoothly and reversely, and the connection between the bevel gears 5 and 6 and the cylindrical casing 1 or the screw 2 is also formed on the other screw shaft connecting member 9 inserted into the cylindrical connecting shaft member 8. Since the connection is complete, the strength of the member is not impaired.

  In this state, when sewage is supplied from the sewage supply port 24 at the end of the screw shaft on the counter drive side, the sewage discharge port 23 formed at the end of the hollow screw shaft 21 flows down into the hollow screw shaft. To be supplied. At this time, since the cylindrical casing 1 and the screw 2 are rotated in the opposite directions, solid-liquid separation of the sewage is promoted by the draining screen portion 11 of the cylindrical casing 1, and the dirty moisture as moisture is removed from the draining screen portion of the cylindrical casing 1. 11 is drained into the main body casing K, and the separated residue is conveyed to the discharge port side by a screw 2 that rotates reversely to the cylindrical casing 1.

  When the residue reaches the conical residue dewatering portion 12 of the cylindrical casing 1, it is dehydrated because it is pressurized by the action of the back pressure resistance plate 3. It is reliably and stably discharged from the residue discharge port 13 formed at the end of the casing to the outside. In this way, continuous solid-liquid separation of wastewater and dewatering of residue are performed.

  As mentioned above, although the residue separation dehydrator of the present invention has been described based on the embodiments, the present invention is not limited to the configurations described in the above-described embodiments, and the configurations thereof are appropriately set within the scope not departing from the gist thereof. It can be changed.

  The residue separating and dewatering machine of the present invention uses a bevel gear mechanism for a cylindrical casing and a screw driving mechanism that rotate in reverse to each other, so that the driving mechanism is made small and simple, and the discharge port is on the non-driving side and stable discharge. In addition to being able to be suitably used for a residue separator dehydrator, for example, it can also be used for a fiber washing dehydrator.

A Screen residue dewatering machine D Drive mechanism K Main body casing M Electric motor N Cleaning nozzle 1 Cylindrical casing 11 Drainage screen portion 12 Screen residue dewatering portion 13 Screen residue discharge port 2 Screw 21 Screw shaft 22 Screw blade 23 Waste water discharge port 24 Waste water supply port 3 Back pressure resistance plate 4 Bevel pinion 5 Bevel gear for driving cylindrical casing 6 Bevel gear for driving screw 7 Bearing 8 Connecting shaft member 9 Screw shaft connecting member 10 Bearing

Claims (4)

  A screw is inserted into the cylindrical casing in which the screen portion is formed so as to drain from the peripheral surface, the sewage residue introduced into the cylindrical casing is captured by the screen portion, and the residue is removed by rotating the screw. A residue separating and dewatering machine configured to pressurize and dewater, wherein the cylindrical casing and the screw are reversely driven by a drive mechanism using a bevel gear.   The drive mechanism using the bevel gear is arranged to be opposed to each other on a bevel pinion driven by an electric motor, meshing with two bevel gears respectively connected to a cylindrical casing and a screw, and configured to rotate reversely to each other The residue separating and dewatering machine according to claim 1, characterized in that:   3. The residue separating and dewatering machine according to claim 1, wherein the screw shaft is hollow and sewage is supplied into the cylindrical casing from the end on the non-driving side.   4. A residue separating and dewatering machine according to claim 3, wherein a sewage discharge port is formed on a screw shaft in the cylindrical casing.

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