JP2004136288A5 - - Google Patents

Description

Chain transmission device and stirring device for fermentation cracking tank by application of the same device

The present invention relates to a chain transmission device in which tension adjustment is easy, and a fermenting cracker agitation capable of agitating a target treatment that is thickly deposited in a fermentation cracking tank having a large depth by applying the device. Relates to the device.

Fermentative decomposition treatment equipment equipped with a fermentation decomposition tank for fermentative decomposition treatment of inputs mainly composed of organic matter such as excess sludge is a fermentative decomposition action by a fungus bed member planted with a target product to be fermentatively decomposed and aerobic soil bacteria A member or the like is charged and deposited in a fermentation decomposition tank, and this is stirred and mixed to subject the target product to fermentation decomposition by the action of the aerobic soil fungus.

  Generally, the stirring device for mixing and stirring the target processed material in the fermentation decomposition tank is provided with a stirrer including a plurality of paddle blades that can be rotated in the longitudinal direction of the fermentation decomposition tank. Configured. By rotating the stirrer in the target processed product in the fermentation decomposition tank and moving the cart forward and backward, the target processed product and the fermentation decomposition working member are mixed and stirred to take in air, and the fermentative decomposition treatment by aerobic soil bacteria is performed. Facilitate.

  However, when the cart is moved back and forth while rotating the stirrer in the object to be treated, the stirrer has to be arranged shallowly in order to keep the running resistance of the drive unit of the stirrer small, and the depth at which stirring can be performed. Was limited. For example, the central axis of the stirrer is arranged in the horizontal axis in the vicinity of the height of the deposition surface of the target treatment object. Therefore, in order to process a large amount of objects, the installation area of the fermentation decomposition tank is increased.

An object of the present invention is to provide a chain transmission device in which tension can be easily adjusted, and by applying the device, fermentation capable of stirring a target processed material that is thickly deposited in a fermentation decomposition tank having a large depth dimension. It is providing the stirring apparatus of a decomposition tank.

In order to solve the above-mentioned problem, the invention according to claim 1 is composed of a chain that is circulated between input and output shafts each having a sprocket wheel attached thereto to transmit power, and a chain tensioner that adjusts the tension of the chain. In the chain transmission, the chain tensioner includes two guide members that are supported so as to be movable along the tension side and the slack side of the chain, and the two guide members connected to each other to apply the acting force from the chain. And a connecting means having a predetermined length that can move in a posture corresponding to these acting forces.

The connecting means of the chain tensioner receives an acting force according to the tension from the tension side and the slack side of the chain via the two guide members to be connected, and the tension is applied to the slack side by moving in the respective circumferential directions. When it is secured and receives a larger transmission load, it moves while changing its posture until both acting forces are balanced.

The invention according to claim 2 is a vehicle that is disposed so as to be able to advance and retreat above the input sediment to be fermented and decomposed in the fermentation decomposition tank, two suspending frames that hang from the trolley, and a horizontal space between the two suspending frames. A stirring device of a fermentation cracking tank comprising an agitator supported by a shaft arrangement and capable of stirring and mixing the deposits in the fermentation cracking tank, wherein the chain transmission device according to claim 1 is provided on at least one of the two hanging frames. It is installed internally, and power is transmitted to the stirrer from the driving part of the carriage by this chain transmission device.

The agitator of the horizontal axis arrangement is supported between two hanging frames that hang down from the carriage, and receives a driving force from the driving section of the carriage through a predetermined chain transmission device with a simple configuration provided in the hanging frame. By receiving, the input sediment in the fermentation cracking tank is stirred and mixed.

The chain transmission device of the present invention and the stirring device of the fermentation decomposition tank by application of the device have the following effects.
The chain tensioner connecting means of the chain transmission device receives the acting force corresponding to the tension from the tension side and the slack side of the chain via the two guide members to be connected, and loosens by moving in the respective circumferential directions. When tension is secured on the side and a larger transmission load is applied, the slack side tension and the chain wrap angle of the sprocket wheel are secured by changing the posture until both acting forces are balanced. The Therefore, the chain transmission device can perform stable chain transmission corresponding to the rotation direction and the magnitude of the load with a simple configuration without requiring any special adjustment operation.

The agitator of the horizontal axis arrangement is supported between two hanging frames that hang down from the carriage, and receives a driving force from the driving section of the carriage through a predetermined chain transmission device with a simple configuration provided in the hanging frame. By receiving, the input sediment in the fermentation cracking tank can be stirred and mixed. Therefore, the stirring device of this fermentation decomposition tank can stably stir and mix even when the input deposit to be stirred and mixed is at a deep position below the carriage, and the transmission system for moving the stirring device forward and backward Therefore, the fermentation decomposition treatment by the deep bottom type fermentation decomposition tank with good space efficiency can be realized.

  Embodiments specifically configured based on the above technical idea will be described below with reference to the drawings.

The fermentation decomposition processing apparatus according to the invention will be described. FIG. 1 is a longitudinal sectional view of the fermentation decomposition treatment apparatus according to the invention, and FIG. 2 is a plan view thereof.
In FIG. 1 and FIG. 2, the fermentation decomposition processing apparatus 1 is comprised from the substantially box-shaped fermentation decomposition tank 2 which opens an upper part, the trolley | bogie 3 for stirring dispersion | spread etc. which can drive | run along the longitudinal direction. The fermentation decomposition tank 2 is a container for accommodating a target object mainly composed of organic substances such as excess sludge to be fermented and decomposed, a fermentation decomposition action member by a fungus bed member planted with aerobic soil fungi, and the like. The upper part is open to the whole surface and in contact with the atmosphere. Rails 4 and 4 for guiding the traveling of the carriage 3 are provided on both sides of the fermentation decomposition tank 2. In addition, above the one end side of the fermentation decomposition tank 2, a supply unit 5 by a conveying means such as a belt conveyor for supplying the input is fixedly disposed.

Next, the cart for stirring and dispersing will be described.
FIG. 3 is an enlarged plan view of the stirrer truck shown in FIG. 2, FIG. 4 is a view taken along arrow A, FIG. 5 is a right half partial view taken along arrow B, and FIG. It is shown in FIG.

  3-5, the stirring part of the cart 3 includes a drive motor 7 at the upper part of the frame 3a, a cylinder 8, a stirrer 9 forming a stirring unit at the lower part, a vertical feed auger 10, and the like. A horizontal transfer mechanism 11 extending on both side ends of 3a, a discharge mechanism 12 below it, and the like are provided, and respectively constitute a stirring device and a spraying device integrally with the carriage 3.

  The drive motor 7 of the stirring unit is connected from the speed reducer 21 to an intermediate support shaft 23 that is horizontally disposed below the speed reducer 21 via a chain 22. Hanging frames 24 and 24 extending downward from both ends of the intermediate support shaft 23 are pivotally supported, and the upper horizontal shaft 25 and the lower horizontal shaft 26 are configured in two stages between the both hanging frames 24 and 24, and the stirrer 9. , 9 are supported in a horizontal axis arrangement. The stirrer 9 is configured by keying cylindrical members each having a large number of paddle blades 9a.

  Two types of chains 27 and 28 are installed between the intermediate support shaft 23 and the upper horizontal shaft 25 and between the intermediate support shaft 23 and the lower horizontal shaft 26 along the hanging frames 24 and 24 on both sides. Thus, a drive system for the upper and lower agitators 9 and 9 is configured. Further, the longitudinal feed augers 10 and 10 and their drive motors 29 and 29 are arranged at the front and rear positions of the hanging frames 24 and 24, respectively. The longitudinal feed auger 10 and the drive motor 29 are connected by a chain coupling 30 that allows misalignment.

Since the upper and lower stirrers 9 and 9 are rotated from the drive motor 7 through the intermediate support shaft 23 and the chains 27 and 28, the stirring unit of the carriage 3 having the above-described configuration can secure a stirring depth. Further, the vertical auger 10 is driven by the drive motor 29 to suppress the running resistance acting on the drooping frames 24, 24 on both sides drooping deeply, and the upper and lower stirrers 9, 9 and the left and right drooping frames are driven by the carriage 3. 24, 24 can be moved back and forth. By this advancing / retreating operation of the carriage 3, the entire fermentation decomposition tank 2 can be stirred sequentially. Therefore, the fermentation decomposition tank 2 can be configured to have a large length and depth dimension, and a large amount of a target to be processed by the large fermentation decomposition tank 2 can be efficiently fermented and decomposed by the action of aerobic soil bacteria.

  Next, a detailed configuration of the lower horizontal axis chain will be described. FIG. 7 is an enlarged front view of the lower stirrer chain, FIG. 8 is an enlarged view of the tensioner, and FIG.

7 to 9, a tensioner 31 is provided at an intermediate portion of a chain 28 that is laid between an intermediate support shaft (input shaft) 23 and a lower horizontal shaft (output shaft) 26. The tensioner 31 swings two pressing members (guide members) 31a and 31b that press inward from both outer sides of the chain 28, and the two pressing members 31a and 31b apart from each other at a distance necessary for the tension of the chain. It is comprised from the connection plates 32 and 32 arrange | positioned in parallel as a connection means connected so that a movement is possible. Inside the two pressing members 31a and 31b, arc portions 33 for sliding contact along the chain 28 are respectively formed, and the guide portions 33a are projected along the chain 28 at the center of the arc portion 33. To form. The connecting plates 32 and 32 are formed to have a length dimension that is smaller than the diameter dimension of the sprocket wheels 23a and 26a and is necessary for chain tension.

  The tensioner 31 having the above-described configuration is configured so as to apply tension to the chain 28 by supporting the two pressing members 31a and 31b at both ends of the connecting plates 32 and 32 so as to sandwich the chain 28 from the outside and holding the connecting plates 32 and 32 at a predetermined distance. Assemble. Specifically, when the driving force is received by the chain 28 from the intermediate support shaft 23, in the example of counterclockwise rotation, as shown in FIG. Along with the operation, the tension-side pressing member 31a rises and the slack-side pressing member 31b descends, whereby the slack-side tension of the chain 28 is secured. Further, when the chain 28 is rotated and a large tension is applied to the tension side, the tension-side pressing member 31a corresponds to the arc portion 33 according to the tension, as shown in FIG. As a result, the corresponding tension acts on the slack side through the connecting plates 32 and 32. Therefore, the tensioner 31 configured as described above allows the tensioner 31 to move up and down in accordance with the load on the chain to secure tension on the slack side and secure the winding angle of the two sprocket wheels 23a and 26a. As a result, a stirrer driving unit for the fermentation decomposition tank 2 having a large depth dimension can be easily configured.

Next, the raising mechanism of the stirring unit will be described. A side view showing the configuration of the pulling mechanism of the stirring unit is shown in FIG.
In FIG. 11, a holding frame 8a for suspending and holding the cylinder 8 is erected on the frame 3a of the carriage 3, and one end of the cylinder 8 is attached to the holding frame 8a. Further, a lifting arm 41 is projected from the hanging frame 24 below the holding frame 8a, and the other end side of the cylinder 8 is connected to the tip portion thereof. A set of agitation units constituted by the two drooping frames 24 and 24 includes cylinders 8 and 8 corresponding to the two drooping frames 24 and 24, respectively, thereby constituting a raising mechanism of the agitation unit.

  The stirring unit pulling mechanism having the above-described configuration is such that the drooping frames 24 and 24 constituting the stirring unit by the stirrer 9 and the like are formed in a pendulum shape with the intermediate support shaft 23 as the center, so that the cylinders 8 and 8 are shortened. As a result, a rotational moment about the intermediate support shaft 23 acts on the hanging frames 24, 24 via the lifting arm 41. As a result, the stirring unit can be lifted up to a position near the frame 3a of the carriage 3 as shown in the side view of the pulled-up state in FIG. Therefore, the stirring unit suspended in the fermentation cracking tank 2 having a large depth dimension can be used for the stirrer 9, the longitudinal feed auger 10, the chains 27, 28, etc. Maintenance can be performed.

Next, the scattering unit of the carriage will be described in detail. FIG. 13 is a plan view of the spraying part of the carriage, and FIGS.
The horizontal transfer mechanism 11 of the spraying unit drives the horizontal transfer members 11a and 11b by two spiral shafts extending to both side ends of the carriage 3 with a chain 51, and diffuses the one horizontal transfer member 11b through the chain 52a. The motor 52 is connected. The two lateral transfer members 11a and 11b are formed so that the twisting directions are opposite to each other, so that when the diffusion motor 52 is driven, the received input is fed to both sides of the carriage 3. The discharge mechanism 12 is configured in parallel with discharge members 12a formed by a spiral shaft that is sent in the traveling direction of the carriage 3 below the lateral transfer mechanism 11. Each pushing member 12a faces an opening 53 formed on the front end side, and is connected to the worm shaft 54 on the rear end side via a worm mechanism 54a. The worm shaft 54 is connected to the discharging motor 55 via a chain 55a.

  The spraying unit having the above configuration operates the horizontal transfer mechanism 11 after moving the carriage 3 directly below the pit 5a of the supply unit 5 that is fixedly disposed when receiving the input. When the input is received from above, the input is deposited on the discharge mechanism 12 below the horizontal transfer mechanism 11, and when the input is further deposited, the two horizontal transfer members 11a and 11b cause the side discharge mechanism. 12 are sequentially transferred to reach the entire width of the carriage 3. By operating the discharge mechanism 12 while the carriage 3 is running in this state, the charges accumulated on the discharge mechanism 12 are simultaneously spread over the entire width of the carriage from the opening 53 on the front end side through the respective extrusion members 12a. Extruded. Therefore, the input received from the supply unit 5 can be uniformly dispersed over the travel range of the carriage 3. That is, in a wide range, the fermentation decomposition treatment can be performed under the same conditions.

The longitudinal cross-sectional view of the fermentation decomposition processing apparatus which concerns on invention The top view of the fermentation decomposition processing apparatus which concerns on invention FIG. 2 is an enlarged plan view of the cart. A view of arrow A in FIG. Right half partial view as seen from arrow B in FIG. CC sectional view of FIG. Enlarged front view of the lower stirrer chain in FIG. Enlarged view of the tensioner in FIG. FIG. 8 D arrow view Transmission state at the start of operation (a) and load operation (b) of the chain of FIG. The side view showing the structure of the raising mechanism of the stirring unit of FIG. Side view of the stirring unit in FIG. Fig. 1 is a plan view of the spraying part of the carriage of Fig. 1 E arrow view of FIG. F arrow view of FIG.

Explanation of symbols

1 Fermentation decomposition processing device 2 Fermentation decomposition tank 3 Carriage (stirring device)
3a Frame 4 Rail 7 Drive motor 8 Cylinder 8a Holding frame 9 Stirrer (stirring device)
9a Paddle blade 10 Vertical feed auger 11 Horizontal transfer mechanism 12 Discharge mechanism 21 Reducer 23 Intermediate support shaft (input shaft)
23a Sprocket wheel 24 Hanging frame 25 Upper horizontal axis 26 Lower horizontal axis (output shaft)
26a Sprocket wheel 27, 28 Chain 29 Drive motor 31 Tensioner 31a, 31b Press member (guide member)
32 connecting plate (connecting means)
33 Arc part 33a Guide part 41 Lifting arm

Claims (2)

In a chain transmission device comprising a chain that is circulated between input and output shafts each having a sprocket wheel mounted thereon and transmits power, and a chain tensioner that adjusts the tension of the chain,
The chain tensioner includes two guide members that are supported so as to be movable along the tension side and the slack side of the chain, and is connected to the two guide members to receive an action force from the chain. A chain transmission device comprising a connecting means having a predetermined length that can move in a posture corresponding to the position. A cart arranged to be able to move forward and backward above the input sediment to be fermented and decomposed in the fermentation decomposition tank, two hanging frames hanging from the cart, and a fermentation decomposition supported by the horizontal axis arrangement between the two hanging frames In the stirring device of the fermentation decomposition tank comprising a stirrer capable of stirring and mixing the deposits in the tank,
A stirring device for a fermentation decomposition tank, wherein the chain transmission device according to claim 1 is installed in at least one of the two drooping frames, and power is transmitted from a driving part of a carriage to a stirrer by the chain transmission device. .