JPH0342155Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to an inhalation treatment device, and its purpose is to be used for collecting and treating industrial waste (sludge, wet earth and sand, dust) and general waste, for example. The present invention relates to a suction processing device that automatically obtains the air volume, head, or degree of vacuum according to its usage conditions.

[Prior art]

As shown in FIGS. 1 and 2, a suction device 3 is provided at the front of the cargo frame 2 of the automobile 1, and a reserve storage tank 4 is provided at the rear.
The preliminary storage tank 4 is connected to the PTO shaft 6 through an appropriate interlocking mechanism, and the front part of the preliminary storage tank 4 is raised and lowered so that it can be raised and lowered as a whole. 7 and a mist catcher and muffling water tank 8 are provided with a partitioned tank 9, the preliminary storage tank 4 is connected to the wet type dust collection tank 7, the intake port of the Roots blower 3 is connected to the wet type dust collection tank 7, and the discharge port is connected to the wet type dust collection tank 7. There is a suction treatment device formed by a flexible suction pipe 10 extending from the preliminary storage tank 4 and communicating with the mist catcher/silenced water tank 8 to perform a series of dust collection functions.

[Problems to be solved by ideas]

By the way, since the air volume or head of the Roots blower 3, which is normally used as the suction device 3, is constant, the above-mentioned device 11 can handle non-inhalable materials that require a large air volume, such as scale and powder, or highly viscous materials. In cases where high vacuum pressure is required when absorbing non-inhalable substances, a Roots blower with a large air volume can be used in the former case, and a high vacuum in the latter case, depending on the application. There was a problem in that at least two Roots blowers were required for each type of blower.

However, the driving force of the Roots blower is
Since it is usually supplied from the PTO shaft, etc.
The maximum power is determined in advance, and it is usually not possible to obtain a large output to drive two large-capacity Roots blowers.

It is necessary to place other essential equipment on the chassis, and considering the space for these essential equipment, there is no remaining space on the chassis to mount two large-capacity Roots blowers, making it difficult to operate and to accommodate disconnecting devices such as clutches. There is no mounting space, and there is very little space to mount a separate, independent drive source.

Furthermore, even if two Roots blowers were mounted on a truck, there were various constraints such that the two Roots blowers had to rotate coaxially, which was a problem.

In light of these circumstances, the inventors installed two relatively small-capacity Roots blowers and used the two Roots blowers in series (when high vacuum pressure was required) or two Roots blowers as needed. We have already completed and disclosed an invention that allows multiple Roots blowers to be used in parallel (when a large air volume is required) or selected using a switching valve. (Japanese Unexamined Patent Publication No. 58-76629) I see, this invention has been developed based on these two methods according to its needs.
Roots blowers can be used in series or in parallel, and have been effective in eliminating all of the drawbacks of the conventional method, but the drawback is that the operator must manually select whether to use them in series or in parallel. It was hot.

[Devised solution]

This invention was made to further improve the above invention, and this invention is based on B. A drive source and a suction mechanism are rotatably connected, and at least a preliminary storage tank, a wet dust collection tank, and a mist carrier are installed in the vicinity of the suction mechanism. The three tanks, the tsutiya and noise-reducing water tank, may be combined together or placed in close proximity to each other, and a flexible suction pipe is connected to the inlet of the preliminary storage tank, and the outlet of the preliminary storage tank is connected to the inlet of the wet dust collection tank. The outlet of the wet dust collection tank is connected in communication with the suction port of the suction mechanism, and the discharge port of the suction mechanism is connected to the suction port of the mist catcher and silencing water tank, so that the discharge port can also be used as a mist catcher. In the suction treatment device, which is open to the atmosphere through the outlet of the muffling water tank and has a suction pipe attached to the suction port of the preliminary storage tank, the suction mechanism is composed of at least two Roots blowers, and is branched from the suction port. One of the branch pipes is directly connected to the intake port of one Roots blower, and the other branch pipe is connected to the intake port of another Roots blower through a check valve and extends from the intake port of the other Roots blower. A pipe in which a spring-loaded check valve is loaded into a passage is connected in communication with a pipe extending from the outlet of one Roots blower, and a check valve is loaded in the passage of this connecting pipe and further extends to the outlet of another Roots blower. "A suction processing device" B, characterized in that it is connected in communication with a pipe extending from the pipe, and this connecting pipe is used as a discharge port of the suction mechanism.
By providing this, we have succeeded in eliminating all of the above-mentioned conventional drawbacks.

〔Example〕

An embodiment of this invention will be described in detail below based on the drawings.

The inhalation treatment device 11 shown in FIGS. 1 and 2 can also be suitably used in the embodiment of this invention.

The inhalation processing device 11 may be of a portable type as shown in FIG. 1, or may be of a stationary type equipped with at least each mechanism shown in the flowchart shown in FIG.

In this invention, as shown in FIG.
The suction device 3 shown in the figure is a roots blower 31, 3.
These two Roots blowers branch the intake system path 10, and the branch pipe 1
One side 13 of 2 is the intake port 3 of the roots blower 31 of 1.
1a, and the other 14 of this branch pipe 12 is connected to the intake port 32a of another Roots blower 32 via a check valve 15.

A pipe 17 into which a spring-loaded check valve 16 extending from the intake port 32a of another Roots blower 32 is loaded
is connected to the pipe 18 extending from the discharge port 31b of one Roots blower 31.

A check valve 20 is loaded into the path of this connecting pipe 19, and the connecting pipe 19 is further extended to the discharge port 32a of the other Roots blower 32.
This connecting pipe 2 is connected in communication with a pipe 21 extending from the
2 serves as a discharge path and leads to a mist catcher and muffler tank 8.

In the suction processing apparatus 11 according to this invention, it is preferable to use Roots blowers 31 and 32 with different air volumes and vacuum pressures, particularly those with different vacuum pressures.

The inhalation treatment device 11 having such a configuration is
Roots blowers 31 and 3 are set based on the maximum power of the vehicle chassis on which the spring-loaded check valve 16 is operated based on the maximum power of the vehicle chassis on which it is mounted, in order to operate the spring-equipped check valve 16 with the differential pressure between points A and B shown in the third figure.
The spring-loaded check valve 16
Set the spring pressure.

For example, when a high vacuum pressure of about minus 700 mmHg is required in the suction processing device 11 system, the operation of the spring-loaded check valve 16 is controlled to compensate for the difference in capacity between the Roots blowers 31 and 32 at maximum power operation, that is, as shown in Figure 3. Set the spring pressure to operate with the differential pressure between points A and B.

In reality, the operation of this spring-loaded check valve 16 is as follows:
Since it operates at a value close to the theoretical differential pressure value between points A and B shown in the third diagram, it is necessary to confirm the operating value experimentally.

In this case, at least one Roots blower 31 uses vacuum pressure to compensate for the difference in capacity between the Roots blowers 31 and 32.
It is desirable to have a higher capacity than other roots blowers 32 by about 200 mmHg.

Generally, in this invention, it is desirable that one Roots blower 31 has a higher vacuum pressure capacity than the other Roots blowers 32.

In this invention, since the spring-loaded check valve 16 is closed at the initial stage of driving the Roots blowers 31 and 32,
Both roots blowers 31 and 32 are set to be driven in parallel.

When the suction processing device 11 set in this manner is operated, the vacuum pressure at point A in FIG. 3 increases over time as shown by the curve α in FIG. 4A.

The bending point β of the curve α in FIG. The check valve 16 opens, and the roots blower 31,
32 are connected in series and driven.

At this time, due to the action of the check valves 15 and 20, the branch pipe 12
The other 14 and the connecting pipe 19 are closed.

The curve γ in FIG. 4B shows the relationship between the air volume and vacuum pressure at point A shown in FIG. , Roots blowers 31 and 32 are connected in series and driven to lower the vacuum pressure.

Figure 4A shows the driving force set on the vertical axis and the vacuum pressure set on the horizontal axis. Within the maximum driving force, a certain range of air volume or vacuum pressure can be obtained, and an excessive load is applied to the drive source. It doesn't cost.

The case where the Roots blowers 31 and 32 are connected in series in this way is when highly viscous industrial waste or the like is to be suctioned.

Therefore, when treating industrial waste with high viscosity, the suction treatment equipment 1 must be operated until a high degree of vacuum is achieved.
It is sufficient to operate 1 continuously.

When a large air volume is required by using the Roots blowers 31 and 32 in parallel, such as when processing powder, etc., in the case of this embodiment, the spring-loaded reverse The vacuum pressure at point A when the stop valve 16 opens is read in advance or initially set (minus 450 mmHg in this embodiment), and the vacuum pressure at point A is controlled by a safety valve, etc. so that the degree of vacuum does not rise above this vacuum pressure. Then, all you have to do is control and maintain parallel drive.

In this way, the Roots blowers 31 and 32 are always driven in parallel, and a large air volume is obtained, which is the sum of the air volumes of each. It will be possible.

[Effect of idea]

As described in detail above, the inhalation treatment device according to this invention has C.
At least three tanks, a preliminary storage tank, a wet dust collection tank, and a mist catcher/silencing water tank, are installed in the vicinity of the above-mentioned suction mechanism, and either they are combined together or placed separately in close proximity, and a flexible suction is provided at the entrance of the preliminary storage tank. The pipe is communicated with the outlet of the preliminary storage tank and the inlet of the wet type dust collection tank, and the outlet of the wet type dust collection tank is connected in communication with the suction port of the suction mechanism, and the discharge port of the suction mechanism is also used as a mist catcher. In the suction treatment device, the suction processing device is connected to the suction port of the muffler tank, the discharge port is opened to the atmosphere through the outlet of the mist catcher and muffler tank, and the suction pipe is attached to the suction port of the preliminary storage tank. The mechanism consists of at least two Roots blowers, one of the branch pipes branched from the above-mentioned suction port is directly connected to the intake port of one Roots blower, and the other of this branch pipe is connected to the other Roots blower through a check valve. A pipe that is connected to the intake port and which loads a spring-loaded check valve in a path that extends from the intake port of the other Roots blower is connected to the pipe that extends from the discharge port of the one Roots blower, and the path of this connecting pipe. A suction processing device characterized in that a check valve is installed in the unit and the tube is further extended to communicate with a pipe extending from a discharge port of another Roots blower, and this connecting pipe is used as a discharge port of the suction mechanism. Therefore, since the spring-loaded check valve 16 of these Roots blowers is opened at a preset differential pressure, all that is required is to switch between series or parallel as necessary, and continuous operation is possible without any manual operation. If the material to be inhaled is highly viscous, it can be connected in series to obtain a high vacuum, and if the material to be inhaled is powder, which requires a large air volume, a large air volume can be used. The purpose of use of the resulting parallel connection and suction treatment device,
Depending on the application, one suction treatment device and one Roots blower can be operated.
This has the effect of providing performance suitable for each.

[Brief explanation of drawings]

Figures 1 and 2 show a flowchart of the suction processing device, Figure 3 is a flow diagram of the Roots blower used in the present invention, and Figures 4A and B respectively show the vacuum pressure and drive at point A shown in Figure 3. FIG. 3 is a diagram showing the relationship between force, air volume, and vacuum pressure, respectively. 3...Suction device, 4...Preliminary storage tank, 7...Wet type dust collection tank, 8...Mist catcher/silence water tank, 10...
Suction pipe (intake system route), 31, 32... Roots blower, 31a, 32a... Intake port, 31b, 32b...
Discharge port, 12... branch pipe (13... one side, 14... other side), 16... check valve with spring, 15, 20... check valve, 18, 21... pipe, 19, 22... connecting pipe.

Claims (1)

[Scope of utility model registration request] A drive source and a suction mechanism are rotatably connected, and at least three tanks, a preliminary storage tank, a wet dust collection tank, and a mist catcher and silencing water tank, are either integrally connected or placed separately in the vicinity of the suction mechanism. death,
A flexible suction pipe is connected to the inlet of the preliminary storage tank, the outlet of the preliminary storage tank is connected to the inlet of the wet type dust collection tank, and the outlet of the wet type dust collection tank is connected to the inlet of the suction mechanism. Connect the discharge port of the suction mechanism to the suction port of the mist catcher and silencing tank, open the discharge port to the atmosphere through the outlet of the mist catcher and silencing tank, and attach the suction pipe to the suction port of the preliminary storage tank. In the suction processing device, the suction mechanism includes at least two Roots blowers, one of the branch pipes branched from the suction port is directly connected to the suction port of the one Roots blower, and the other of the branch pipes is connected to the intake port of the first Roots blower. A pipe that is connected to the intake port of another Roots blower through a valve and that is loaded with a spring-loaded check valve extending from the air supply port of the other Roots blower extends from the discharge port of one Roots blower. A check valve is installed in the path of this connecting pipe, and the connecting pipe is further extended to communicate with a pipe extending from a discharge port of another Roots blower, and this connecting pipe is used as a discharge port of the suction mechanism. An inhalation treatment device characterized by: