JP5519254B2 - How to use mixer pressure regulator - Google Patents

Description

The present invention relates to a method of using a pressure regulator of a mixer that prevents a gas from being blown out due to an increase in internal pressure of the mixer when kneading rubber or the like.

  When kneading various types of rubber with a mixer, the pressure inside the mixer rises due to the volume increase of various components put into the mixer, and there is a possibility that gas containing carbon and chemicals may be ejected outside the mixer. For example, as shown in FIG. 1, a bag-like member made of a highly airtight material is attached to an exhaust path connecting the mixer and the dust collector, and the bag-like member is expanded (solid line in FIG. 1). There is a pressure regulator that absorbs the internal pressure of the mixer and absorbs the gas that could not be absorbed by the expansion of the bag-like member with a dust collector. When the gas does not flow in from the mixer, the pressure regulator shrinks the bag-like member (the shape indicated by the broken line in FIG. 1), so that the airflow from the mixer to the dust collector is blocked and dust is accumulated and accumulated. In such a case, as a method for removing dust, for example, a pulse jet method (for example, refer to Patent Document 1) that vibrates a bag-like member by jetting of pressure air is known. When the inside of the duct that becomes the gas flow path between the bag-shaped member and the pressure regulator and the dust collector is closed, dust cannot be removed even with the pulse jet method, and it is disassembled and removed manually. There was a need to do. In addition, the bag-like member is constantly expanded and contracted under the exhaust pressure from the inside of the mixer, so bending may easily cause pinholes or tears, improving workability and durability. There was a need for improvement in sex.

JP 2002-113318 A

An object of the present invention is to absorb pressure even if the internal pressure of the mixer rises and prevent the gas from being ejected to the outside, and to easily remove the dust adhering to the inside of the pressure regulator and to improve durability. It is to provide an excellent method of using a new mixer pressure regulator.

The present invention is arranged between a mixer for kneading a processing member and a dust collector connected to an exhaust path of the mixer, and a pressure absorber having an internal space in which gas discharged from the mixer is partitioned by an outer peripheral wall A method of using a pressure regulator of a mixer that introduces into the gas and absorbs the pressure of the gas,
A damper that introduces and stops gas discharged from the mixer is provided in the inlet side exhaust path of the pressure absorber,
In the pressure regulator of the mixer provided with a plurality of fine apertures that allow ventilation between the inner space and the outside on the outer peripheral wall, in performing absorption of the pressure of the gas and backwashing of the pressure absorber,
The dust collector is a method of using a pressure regulator of a mixer, characterized in that air in the internal space of the pressure absorber is always sucked .

  The pressure absorber is preferably composed of a flexible sheet that forms the outer peripheral wall and a frame that supports the sheet and forms the internal space.

  It is desirable that the damper includes an actuator that opens and closes the inlet-side exhaust path according to the operation status of the mixer.

  Of the gas discharged from the mixer, carbon and chemicals are filtered by the outer peripheral wall of the pressure absorber and only air is discharged to the outside, so the gas pressure is absorbed by the pressure absorber and leaks carbon etc. to the outside. There is nothing. Also, when closing the damper arranged in the inlet side exhaust path and stopping the introduction of gas to the pressure absorber, the outside air is conversely sent to the internal space through the fine opening in the outer peripheral wall and sent to the dust collector. Therefore, carbon or the like deposited on the outer peripheral wall of the pressure absorber is removed by filtration (backflow cleaning), and clogging is eliminated.

  Since the pressure absorber is composed of a flexible sheet that forms the outer peripheral wall and a frame that supports the sheet and forms an internal space, the sheet is excessive even when exhaust pressure is applied from inside the mixer. The durability can be improved without bending.

  The damper is equipped with an actuator that opens and closes the inlet-side exhaust path according to the operation status of the mixer, so that gas pressure can be absorbed and backwashing can be performed under optimal conditions. To prevent. Moreover, when not exhausting gas in the mixer, it is possible to prevent the carbon adhering to the inside of the pressure absorber from entering the mixer inadvertently by closing the damper.

  Since both the gas pressure absorption and the backwashing of the pressure absorber can be realized while the dust collector is sucked, it is not necessary to switch the operation of the dust collector, whereby the configuration of the apparatus can be simplified.

It is the figure which showed the pressure regulator of the conventional mixer, A continuous line shows the state which a bag-like member expand | swells by exhaust_gas | exhaustion from a mixer, and a broken line shows the state which a bag-like member shrink | contracts without the inflow of a gas from a mixer . It is the figure which showed embodiment of the internal pressure regulator of the mixer regarding this invention, and shows the case where an entrance side exhaust path is provided below the pressure regulator and the exit side exhaust path is provided above. It is a figure which shows the structure of the control part of the actuator which opens and closes an inlet side exhaust path among embodiment of the internal pressure regulator of the mixer regarding this invention.

  Hereinafter, the present invention will be described more specifically with reference to the drawings.

  2 in FIG. 2 has an internal space that is blocked from the outside by a partition wall, and is a mixer for kneading various rubbers, carbon, chemicals, and other processing members that are put into the internal space with a rotor with a blade (not shown). is there. The mixer 1 is airtight except for a gas exhaust path in order to prevent carbon, chemicals, and the like from leaking to the outside. For this reason, when the processing member is introduced into the mixer 1, the pressure inside the mixer 1 increases as the volume of the processing member increases. Further, the internal pressure of the mixer 1 constantly fluctuates due to kneading.

Reference numeral 2 denotes a chute serving as an inlet side exhaust path for introducing the gas discharged from the mixer 1 into a pressure absorber 3 described later. In the embodiment of the pressure regulator of the mixer according to the present invention, one end of the chute 2 is connected to the internal space of the mixer 1 and extends upwardly from the coupling portion, and the lower opening is the cylinder. A tapered body 2b is provided which is connected to the other end of the shaped body 2a and whose upper opening expands upward in a tapered shape.

Reference numeral 3 denotes a pressure absorber that absorbs an increase in the internal pressure of the gas. The pressure absorbing member 3, the body portion 3a ₁ of the outer peripheral wall 3a, along with extending straight from the lower end opening leading to the tapered body 2b and hermetically upward, partitioned formed by sealing the upper end with canopy 3a ₂ An internal space is formed. The outer peripheral wall 3a is provided with a plurality of fine apertures that allow ventilation between the internal space and the outside, and allows only air to pass therethrough without allowing carbon or chemicals to pass through the gas. is there. The pressure absorber 3 can be selected from various shapes such as shape, size, and thickness.

A frame 4 forms an internal space of the pressure absorber 3. The frame 4 can be omitted if the pressure absorber 3 can form a strong internal space by itself. However, when a flexible sheet is selected as the outer peripheral wall 3a, the frame 4 By supporting the sheet, bending of the sheet due to the internal pressure of the gas can be suppressed. In the embodiment relating to the present invention, the frame 4 and the chute 2 are combined and integrated.

  Reference numeral 5 denotes an outlet side exhaust path connecting portion having one end connected to the internal space of the pressure absorber 3 and the other end connected to a dust collector (not shown). The outlet-side exhaust path connecting portion 5 is disposed above the pressure absorber 3, and the gas exhausted from the mixer 1 once enters the internal space of the pressure absorber 3 from below the pressure absorber 3. Since it is introduced, the pressure of the gas is not directly applied to the dust collector.

  A damper 6 is disposed on the chute 2 which is an inlet side exhaust path, and introduces and stops the gas discharged from the mixer 1 by opening and closing the inlet side exhaust path. The damper 6 can employ various dampers such as a butterfly damper and a slide gate damper.

  The damper 6 may be manually driven to open and close the inlet-side exhaust path, but is more preferably driven by an actuator 7 shown in FIG. The actuator 7 can be selected from various types such as an air cylinder, a hydraulic cylinder, and a motor.

  Reference numeral 8 denotes processing member information acquisition means for acquiring information on processing members to be input to the mixer. The information on the processing member refers to, for example, the type and amount of the processing member. The processing member information acquisition unit 8 can be configured by an external input device such as a keyboard connected to a computer, for example.

  9 is a damper driving condition storage means for storing conditions for driving the damper 6 in accordance with information on the processing member. The conditions for driving the damper 6 are, for example, conditions such as whether the inlet side exhaust path is opened or closed based on information on the processing member, and when the inlet side exhaust path is opened or closed. The damper drive condition storage means 9 can be constituted by a computer memory, for example.

  Reference numeral 10 denotes a control unit that calls a damper driving condition corresponding to the processing member from the processing member information acquisition unit 8 and the damper driving condition storage unit 9 and controls driving of the actuator 7 according to the damper driving condition. The control means 10 measures the internal pressure and gas flow rate of the mixer 1, the chute 2, the pressure absorber 3, etc. by various sensors (not shown), and adds feedback of measurement information of these various sensors to add the actuator 7 It is also possible to control. The control means 10 can be composed of, for example, a CPU of a computer and an external output device such as a sequencer connected thereto.

  In performing the absorption of the gas pressure and the backwashing of the pressure absorber 3 with the pressure regulator of the mixer configured as described above, the dust collector always sucks the air in the internal space of the pressure absorber 3. deep.

  In order to absorb the pressure of the gas exhausted from the mixer 1, the damper 6 is driven to open the inlet exhaust path. Thereby, the gas is introduced into the pressure absorber 3. Out of the gas, the outer peripheral wall 3a of the pressure absorber 3 does not permeate carbon, chemicals, or the like, and discharges only air to the outside (the direction of the arrow pointing outward from the pressure absorber 3 shown in FIG. 2). Air flows into the air). Thereby, the pressure of the gas is absorbed by the pressure absorber 3. Further, since the dust collector is always sucked, the gas that cannot be exhausted from the pressure absorber 3 is absorbed by the dust collector. Therefore, the internal pressure of the mixer 1 does not increase too much.

  Further, the suction of the dust collector prevents the gas from staying in the internal space of the pressure absorber 3 and prevents the filtered carbon or the like from accumulating only at a specific location on the outer peripheral wall 3a.

  In order to perform back flow cleaning of the pressure absorber 3, the damper 6 is driven to close the inlet side exhaust path. Since the dust collector is always sucking, air is taken into the internal space of the pressure absorber 3 from the outside (air flows in the direction of the arrow from the outside toward the pressure absorber 3 as shown in FIG. 2), Carbon or the like accumulated inside the outer peripheral wall 3a is removed. If the exhaust from the mixer 1 is weak or stopped without closing the inlet-side exhaust path, the backwashing can be performed.

  Therefore, in the pressure regulator of the mixer having the above-described configuration, it is possible to perform the absorption of the gas pressure and the backflow cleaning without switching the suction operation of the dust collector.

  Even if the outer peripheral wall 3a of the pressure absorber 3 is a flexible sheet, the sheet is supported by the frame 4 and may be bent excessively even if the pressure of the gas is absorbed and backwashing is performed. And durability can be improved.

In order to drive the damper 6 by the actuator 7, first, the processing member information acquisition means 8 acquires information about the processing member to be thrown into the mixer. In order to acquire information on the processing member, an operator may input the information, or a method using a sensor that reads an identification code indicating the type and amount of the processing member to be input may be attached. The control means 10 selects a predetermined damper driving condition from the damper driving condition storage means 9 according to the output of the processing member information from the processing member information acquisition means 8 that acquired the information of the processing member, and The actuator 7 is driven based on a damper driving condition. Further, various sensor measurement information obtained by measuring the internal pressure and gas flow rate of the mixer 1 and the chute 2 may be fed back to the control means 10 to drive the actuator 7. By operating the actuator 7 in accordance with information on processing members, driving conditions of dampers, measurement information of various sensors, which are the operation status of these mixers, absorption of the gas pressure and backwashing are performed under optimal conditions. And it becomes possible to carry out automatically.

  In the conventional pressure regulator having the configuration shown in FIG. 1, the airtight bag-shaped member 3a ′ has a hole or crack, and needs to be replaced at a frequency of 1 to 3 months. Further, it was necessary to clean the inside of the pressure regulator to remove carbon etc. once a month.

On the other hand, the outer peripheral wall 3a about the present invention is a flexible sheet of breathable, the pressure regulator which supports the seat frame 4, damage to the seat even after 6 months was observed. Further, during the operation for 6 months, it was not necessary to clean the inside of the pressure regulator or the inside of the duct which becomes a gas flow path between the pressure regulator and the dust collector.

According to the present invention, even if the internal pressure of the mixer rises, the pressure is absorbed and the gas is prevented from being ejected to the outside, and dust attached to the inside of the pressure regulator can be easily removed and durability is also improved. An excellent method of using a new mixer pressure regulator can be provided.

DESCRIPTION OF SYMBOLS 1 Mixer 2 Chute 3 Pressure absorber 3a Outer peripheral wall 4 Frame 5 Outlet side exhaust path connection part 6 Damper 7 Actuator 8 Processing member information acquisition means 9 Damper drive condition storage means 10 Control means

Claims (3)

The gas exhausted from the mixer is introduced between the mixer for kneading the processing member and the dust collector connected to the exhaust path of the mixer, and introduced into the pressure absorber having the internal space defined by the outer peripheral wall. A method of using a pressure regulator of a mixer that absorbs the pressure of the gas,
A damper that introduces and stops gas discharged from the mixer is provided in the inlet side exhaust path of the pressure absorber,
In the pressure regulator of the mixer provided with a plurality of fine apertures that allow ventilation between the inner space and the outside on the outer peripheral wall, in performing absorption of the pressure of the gas and backwashing of the pressure absorber,
The method of using a pressure regulator of a mixer, wherein the dust collector keeps air in the internal space of the pressure absorber constantly sucked. 2. The pressure regulator of a mixer according to claim 1, wherein the pressure absorber comprises a flexible sheet that forms the outer peripheral wall and a frame that supports the sheet and forms the internal space. How to use . The method for using a pressure regulator of a mixer according to claim 1 or 2, wherein the damper includes an actuator that opens and closes the inlet-side exhaust path according to an operating state of the mixer.

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