JPH0561135U - Vertical rotary valve - Google Patents

Abstract

(57) [Summary] [Purpose] To make it possible to efficiently transfer raw materials from the raw material inlet to the outlet in a rotary valve, and to downsize the device itself. [Structure] In the case of the gravity discharge type, a plurality of raw material inlets 3 are provided with a predetermined angle phase shift in a plane, and a plurality of raw material outlets 6 are provided so as to face between the inlets 3. A plate-shaped seal member 7, 8 is provided on the upper and lower sides, and a communication hole 701 for individually communicating the raw material inlet 3 and the raw material discharge port 6 with the raw material storage chamber 406, which is rotated, in each of the seal members 7, 8. 801 is provided, and a pressing mechanism 9 for pressing the upper seal members 7 and 8 in the axial direction of the rotor 4 is provided in the housing 2.
It is characterized by being provided in.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a vertical rotary valve used for supplying / discharging powder particles.

[0002]

[Prior Art]

 A vertical rotary valve used for transferring and supplying raw materials in a path having a pressure difference for transferring powder or grain raw materials is known. In this type of rotary valve, the raw material is put into the raw material storage chamber formed in the horizontally rotating rotor from the raw material input port, and the raw material storage chamber is insulated by the rotation of the rotor from the raw material input port. It is designed to discharge the raw material from the raw material storage chamber, and this kind of valve is used when there is a pressure difference between the raw material inlet and the raw material outlet. It has been known that such a vertical rotary valve is provided with one raw material inlet and one raw material outlet in the case of a gravity discharge type, and one air flow inlet in the case of an air flow type. ..

[0003]

[Problems to be solved by the device]

 However, in the above-mentioned conventional technology, since there is only one raw material inlet, one raw material outlet and one air flow inlet, it has not been possible to sufficiently respond in terms of efficient raw material transfer. An object of the present invention is to solve the above problems, to enable efficient transfer of a raw material from a raw material inlet to a raw material outlet, and to downsize the apparatus itself.

[0004]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention provides a plurality of raw material inlets with a predetermined angle phase shift in a plane in the case of a gravity discharge type, and a plurality of raw material outlets corresponding to the space between the raw material inlets. Individually provided, plate-like seal members are provided above and below the rotor, and each seal member is provided with a communication hole for individually communicating the raw material input port and the raw material discharge port with the rotationally moving raw material storage chamber, A pressing mechanism for pressing the upper seal member in the axial direction of the rotor was provided in the housing. Further, in addition to the above, in the air flow discharge type, a plurality of air flow inlets are provided with a predetermined angle phase shift in the plane, and plate-shaped seal members are provided above and below the rotor, and each seal member has a raw material inlet and a raw material exhaust port. A communication hole was provided to individually communicate the outlet and air flow inlet with the rotating material storage chamber, and the housing was equipped with a pressing mechanism for pressing the upper seal member in the axial direction of the rotor.

[0005]

[Action]

 According to the above means, by providing a plurality of raw material inlets, raw material outlets, and air flow inlets, the raw material can be transferred much more rapidly than the conventional one, and the sealing pressure can be further optimized. It can be adjusted.

[0006]

【Example】

 Next, an embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a front sectional view of a gravity discharge type vertical rotary valve of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a bottom view thereof, and FIG. 4 is a developed view thereof. Reference numeral 1 is a rotary valve, and the valve housing 2 is in the shape of a cylindrical container, and is composed of a cylindrical main body 201, and a disk-shaped upper cover 202 and lower cover 203 that close the upper and lower sides of the main body 201. The flanges 204 and 205, which are provided on the outer periphery of the upper and lower ends of the main body 201 in a radial direction, and the peripheral portions of the covers 202 and 203 are connected by bolts and nuts 207 ... With packings 206 and 206 interposed. As a result, a closed chamber 208 is formed in the housing 2.

Two openings 214, which form a part of the raw material inlet, are formed 180 ° apart from each other in a portion near the peripheral portion of the upper cover 202, and the peripheral portion of this portion has an annular shape protruding upward in an annular shape. The protrusion 215. In the embodiment, the tubular member 301 constituting the raw material feeding port 3 is vertically inserted and fitted, and the gland packing 302 is interposed between the tubular member 301 and the opening 214 to maintain the two hermeticity.

In the chamber 208 of the housing 2, the rotor 4 forming the valve body is installed. The rotor 4 is composed of upper and lower substrates 401 and 402, and a plurality of cylindrical bodies 403 ... Vertically interposed in a peripheral portion between them. The upper and lower substrates 401, 402 are provided with the same number of openings 404, 405 communicating with the insides of the respective cylinders 403, and the raw materials storage chamber 406 is formed inside the cylinders 403, including the openings. ..

The rotor 4 is connected to a vertical drive shaft 5 provided so as to extend vertically through the central portions of the upper and lower substrates via a cylindrical holder 407 and a key 408, and the shaft 5 includes upper and lower covers 202 and 203. It is extended to the outside of the upper and lower covers through the through-holes 209 and 210 formed in the center of the annular cylindrical portion. In the figure, 501 and 502 are gland packings that seal between the through holes 209 and 210 and the shaft 5. The shaft 5 is rotatably driven, for example, by connecting an upward extending portion to a motor (not shown) or the like, and the lower end portion 503 is rotatably supported via a bearing 505 by a support stay 504 attached to the lower cover 203. To be done. Further, the support stay 506 attached to the upper cover 202 supports the intermediate portion 507 of the upward extending portion via the bearing 508. The rotor 4 is rotationally driven in the housing 2 by the drive shaft 5 described above, and the cylindrical bodies 4 forming the raw material storage chambers 406 ... Radial at equal angular intervals in the radial direction, as is apparent from FIG. In the embodiment, twelve pieces are arranged at the equidistant portion.

The raw material discharge port 6 is provided in a part of the lower cover 203 near the periphery. The raw material discharge port 6 is formed by a cylindrical extending portion 212 surrounding the opening portion 211 provided in the cover 203. Two such raw material discharge ports 6 are provided at a position 90 ° apart from the above-described raw material input port 3, and in the embodiment, the same raw material discharge port 6 is located at a position facing the raw material storage chamber 406 of the rotor 4. The positions of both sides 3 and 6 are set so that the storage chamber 406 does not communicate with the other.

The upper and lower substrates 401 and 402 of the rotor 4 face the sealing plates 7 and 8 constituting a disc-shaped sealing member, respectively. The lower seal plate 8 is disposed on the lower cover 203, the lower substrate 402 of the rotor 4 is slidably contacted from above with a predetermined pressure, and a part thereof is provided with a communication port 801 which communicates with the raw material discharge port 6 described above, and a central portion. The shaft 5 is provided with a through hole 702.

The upper sealing plates 7 and 8 face the upper substrate 401 of the rotor 4, and a communication hole 701 communicating with the injection port 3 is provided in a part of the upper sealing plate 7, 8 and is connected to the lower flange 303 of the tubular member 301 at this portion. Has been done. Since the tubular member 301 is fitted in the opening 214 of the upper cover 202 via the gland packing 302, it can slide in the axial direction. An insertion opening 702 for the shaft 5 is provided at the center of the seal plate 7.

A part of the above-mentioned upper seal plate 7 is pressed downward from above the rotor 5 in the direction of the axis 5 by the pressing mechanism 9 provided in the valve housing 2. The pressing mechanism 9 includes a holder 901 vertically provided on a part of the upper cover 202, a packing 902 accommodated in a lower portion of the holder 901, and a gland packing 904 including a nut 903 for pressing the packing 902. And an adjusting screw 905 that vertically penetrates the nut 903 and abuts the lower end portion 906 with a part of the upper surface of the upper seal plate 7. A recess 703 that engages with the lower end 906 is provided on the upper seal plate 7, and the seal plate 7 is pressed by the screw rotation of the adjusting screw 905 to seal between the substrates 401 and 402 above and below the rotor and the seal plates 7 and 8. Adjust pressure. In order to equalize the pressure, a plurality of such pressing mechanisms 9 are preferably provided, and in the embodiment, they are provided 180 ° apart as shown in FIG. The engagement between the concave portion 703 and the adjusting screw 905 not only applies the above-mentioned pressure but also fixes the seal plate to prevent rotation.

As the seal plates 7 and 8 described above, a hard material such as metal or ceramic may be used, or a soft synthetic resin material such as Teflon may be used. When the upper seal plate 7 is a soft seal plate 7A as shown in FIG. 13, it is preferable to provide a backup material 7B made of a metal plate material or the like on the seal material 7A. In addition, 7C in the drawing is a stopper for preventing rotation of both 7A and 7B.

In the above, the raw material is charged from the raw material charging port 3, and the raw material storage chamber of, for example, a faces the position directly below the raw material charging port 3 by the rotation of the rotor 4, and the raw material is stored therein. By rotating the rotor 4, the raw material storage chamber a is sealed by the seal plates 7 and 8 at a position apart from the communication hole 701 of the raw material inlet 3 and the seal plate 7, and the seal pressure is the same as the pressing mechanism 9 described above. Adjust the seal with. In this case, the sealing member is plate-shaped, and surface pressure is also obtained by sandwiching the sealing member from above and below, and high airtightness is maintained due to surface contact. When the rotor rotates and the storage chamber reaches the position of b, it communicates with the raw material discharge port 6 and discharges the raw material in the storage chamber. After discharging, the rotor is rotated to reach the degassing holes 803 and 213, and degassing is performed to smoothly receive the next raw material. Repeat the above.

By the way, in this embodiment, the following configuration is adopted. That is, 10 is an opening provided in a part of the peripheral wall of the housing main body 201, and 11 is an opening provided in a part of the lower cover 203, which are pipes 101 and 111 equipped with switching valves 102 and 112. The medium is introduced into the chamber 208 by communicating with the outside. The medium may be selected according to the raw material or the treatment method in the next step. For example, in the case of a raw material that easily adheres to the wall surface of the storage chamber 406, cold water is supplied into the chamber 208 by the above system. Cooling.

When the raw material is overheated in the next step, steam or hot water or the like is supplied as residual heat to superheat it. Further, in the case of performing the overheat treatment in the next step, a medium having a pressure higher than the pressure is introduced, which makes it possible to prevent leakage of fine raw material before sealing. According to this embodiment, two raw material inlets and two raw material discharge ports are provided and twelve raw material storage chambers are provided, so that the raw material can be transferred more efficiently than the conventional one.

Next, an embodiment of an air flow discharge type vertical rotary valve according to the present invention will be described in detail with reference to the drawings. 5 is a front sectional view of the same embodiment, FIG. 6 is a front sectional view seen from another angle, FIG. 7 is a plan view thereof, FIG. 8 is a bottom view thereof, and FIG. 9 is a developed view thereof. This air flow type vertical rotary valve has two air flow ports separated by 90 ° from the raw material charging port and four seal pressing mechanisms separated by 90 ° from the gravity discharge described above. It is different from the vertical type rotary valve. That is, an opening 214 that forms a part of the raw material inlet 3 of the cover 202 and an opening 29 that forms a part of the airflow inlet 30 are formed in the lower peripheral portion 90 ° apart, and the peripheral portion of this portion is circularly shaped upward. The ring-shaped protrusion 215 protrudes in the direction. In this embodiment, a tubular member 31 constituting the airflow inlet 30 is vertically inserted and fitted, and a gland packing 302 is interposed between the tubular member 31 and the opening 29 to maintain airtightness of both.

In this embodiment, the air flow of the heating medium (eg, superheated steam) is used as the air flow to perform the superheat treatment or the sterilization treatment of the raw material. However, the present invention is not limited to this and other An air flow using gas may be used. Further, in this embodiment, four seal pressing mechanisms 9 are provided between the raw material charging port 3 on the upper cover 202 and the air flow inlet 30 at 90 ° intervals.

Further, if the communication port 801 communicating with the raw material discharge port 6 of the lower seal plate 8 is rotated downstream in the rotor rotation direction, for example, if the rotor 4 is rotated to the right in FIG. 5, a deaeration hole 803 is formed in a portion on the back side of the paper surface. The deaeration hole 803 is provided at a position where it is insulated from the raw material storage chamber 406 and the communication port 801, and communicates with the deaeration hole 213 provided in the lower cover 203. Therefore, the rotor 4 rotates, the raw material received from the charging port 3 is stored in the raw material storage chamber 406, and is discharged from the raw material discharging port 8. After discharging, the raw material storage chamber 406 is degassed by facing the degassing holes 803 and 213.

In this embodiment, two raw material inlets, two air flow inlets, and two raw material discharge ports are provided, and twelve raw material storage chambers are provided. Therefore, the raw material can be transferred more efficiently than the conventional one. Comes out. In the above embodiment, the gravity discharge type and the air flow discharge type are described as different examples, but the two types may be combined.

10 and 11 show an embodiment of the vibration absorbing device. In FIG. 10, a counter spring 920 is interposed between the lower seal plate 8 and the lower cover 203. A downward recess 820 is formed in a part of the seal plate 8 and a lower recess 820 is formed in a part of the lower cover 203. A protrusion 220 that is loosely fitted is provided to restrict movement in a plane between the seal plate 8 and the lower cover 203, and a spring 920 is arranged around the protrusion 220 to perform a spring guide.

FIG. 11 shows a coil spring 930 interposed between the end surface 906 of the adjusting screw 905 and the bottom surface of the recess 703 of the upper seal plate 7. The depth of the recess 703 is increased to increase the depth of the screw tip. Prevent it from coming off. According to the embodiment shown in FIGS. 10 and 11, the adhesiveness of the seal surface is improved as compared with the embodiment described above, and the impact caused by the rotation of the rotor can be absorbed.

Next, an embodiment of the pressing mechanism for the seal plate 7 will be described. FIG. 12 shows an example in which a hydraulic cylinder is used as the pressing mechanism. Instead of the adjusting screw passing through the packing 902 and the nut 903, the rod 910 is brought into contact with the upper seal plate 7, and the rod 910 is moved downward by supplying pressure oil to the cylinder 912 supported by the mount 911. The seal plate 7 is pressed. In this embodiment, in order to keep the pressure of the seal surface 7a constant, the load current of the motor for driving the rotor 4 which changes depending on the pressure is detected to control the operation of the hydraulic cylinder.

That is, the load current of the motor 913 is detected by the ammeter 914, this signal is input to the controller 915, and the controller 915 instructs the servo valve 916 to control the pressure of the cylinder 912 in accordance with the signal. Adjust the pressure on the sealing surface. As another embodiment, a pressure sensor 917 may be installed at the contact portion between the rod 910 and the upper seal plate 7 to detect the pressure and control the cylinder pressure. It is also possible to detect the amount of leakage of a medium such as water vapor from the sealing surface and control the hydraulic cylinder 912 accordingly.

FIG. 14 shows an embodiment in which a swirl flow generating mechanism is provided at the air inlet of the superheated medium, and two openings 214 and 29 are provided in the peripheral portion of the upper cover 202, spaced 180 ° apart from each other. Each of them forms a part of the raw material charging port 3 and the air flow inlet 30. A peripheral portion of the opening 29 is an annular protrusion 210 that protrudes upward in an annular shape. In the embodiment, a tubular member 31 that constitutes the air flow inlet 30 is vertically inserted and fitted, and the tubular member 31 is provided between the tubular member and the opening 29. Holds the airtightness of both sides through the ground packing 302. Inside the tubular member 31, a swirl flow generating mechanism 32 having an upper end and a lower end having a cone shape and an intermediate portion having a cylindrical shape is supported by the inner peripheral surface of the tubular member 31 via a twisting blade 32. There is.

According to the embodiment shown in FIG. 14, the air flow (superheated steam) of the superheated medium blown from the air flow inlet 30 is diverted to the inner peripheral surface side of the air flow inlet by the upper end cone of the swirl flow generating mechanism 32, and the twist blade After passing through 33, a swirl flow is formed, and the raw material is discharged more smoothly and quickly.

In FIG. 15, an airflow speed increasing mechanism 34 is supported at the airflow inlet via a fixed plate 35 on the inner peripheral surface of the tubular member. According to the embodiment of FIG. 15, the airflow (superheated steam) of the superheated medium blown from the airflow inlet 30 determines the airflow passage of the airflow inlet 30 by the airflow accelerating mechanism 34, thereby increasing the flow velocity and discharging the raw material. Do smoothly and quickly.

FIG. 16 shows an application example of a gravity discharge type vertical rotary valve. The raw materials supplied to the vertical rotary valve 100 from the two raw material inlets 3 and 3 are sent to the different steaming cans 200 and 200 from the two raw material outlets 6 and 6, respectively. The raw material contained in the can is cooked by the air stream (for example, saturated steam) of the heating medium fed from the upper part of the can during the process of moving on the belt conveyor, and is delivered as a product from the discharge valves 260, 260.

FIG. 17 shows an application example of an air flow discharge type vertical rotary valve. The airflow superheater 600 is provided with a cyclone 603 for separating superheated steam while air-transporting the raw material while the superheated steam is aerated, and a discharge valve 608 provided at a raw material discharge port of the cyclone 603 to discharge the raw material airtight to the outside of the system. The superheater 607 superheats the superheated steam whose temperature has decreased due to contact with the raw material, and the vertical rotary valve 100 used as a raw material charging device.

The upstream side of the superheat pipe 609 is connected to the raw material discharge ports 6, 6 of the vertical rotary valve 100, and the downstream side is connected to the inlet 602 of the cyclone 603. Then, the outlet 604 of the cyclone 603, the suction port of the circulation blower 605, the discharge port of the blower 605 and the superheat medium inlet of the vertical rotary valve 100 are connected via the super heater 607 through pipes 610, 611 and 612, respectively. They are connected to each other to form a circulation system 601. Two circulation systems 601 are formed for one rotary valve 100. A saturated steam supply pipe 613 is connected to the pipe 611 and supplies saturated steam to the circulation systems 601 and 601.

The airflow superheater 600 is configured as described above, and the raw material supplied from the raw material inlets 3 and 3 to the vertical rotary valve 100 is heated after the rotor 4 in FIG. It is discharged from the raw material discharge ports 6 by the action of the steam flow. Next, the raw material is superheated in the superheated pipe 609 by flowing an air stream, separated from the superheated steam by the cyclone 603, and recovered as a product from the discharge valve 608. On the other hand, the superheated steam flows through the circulation systems 601 and 601 by the action of the circulation blower 605.

FIG. 18 shows an application example of a vertical rotary valve of the air flow discharge type, which shows an example in which the raw material is charged into the line and the product is discharged into one unit. In this embodiment, while having the same circulation system 601 as that of the above-mentioned embodiment, the raw material separated from the superheated steam by the cyclone 603 is sent again to the rotary valve 100 and sent out as a product from the product discharge port 6a. Further, the superheated steam discharged from the circulation blower 605 may be adjusted by a switching valve and sent to the rotary valve 100 via a pipe 614.

[0034]

As described in detail above, according to the present invention, in the gravity discharge type, a plurality of raw material inlets are provided with a predetermined angle phase shift in a plane, and the raw material outlets are arranged so as to face the raw material inlets. In addition to the above, in addition to the above, in the air flow discharge type, a plurality of air flow inlets are also provided with a predetermined angle phase shift in the plane, and a plate-like seal member is provided above and below the rotor as a mechanism common to both types. , Each sealing member is not provided with a communication hole for individually communicating the raw material inlet, the raw material outlet, and the air flow inlet with the rotating raw material storage chamber, and the upper sealing member is pressed in the axial direction of the rotor. Since the mechanism is installed in the housing, the raw materials can be transferred more efficiently than the conventional equipment and the equipment can be downsized, and the air tightness between the raw material input port and the raw material discharge port and each raw material storage chamber of the rotor can be achieved. Is held, from low pressure part to high pressure part Alternatively, the raw material can be supplied and discharged from the high pressure section to the low pressure section.

[Brief description of drawings]

FIG. 1 is a front cross-sectional view (a cross-sectional view taken along line 1-1 of FIG. 2) of a gravity discharge type vertical rotary valve.

FIG. 2 is a plan view of the same.

FIG. 3 is a bottom view of the same.

FIG. 4 is a development view of the same.

5 is a front cross-sectional view (cross-sectional view taken along line 5-5 of FIG. 7) of an air flow discharge type vertical rotary valve.

6 is a front cross-sectional view (cross-sectional view taken along line 6-6 of FIG. 7) viewed from another direction.

FIG. 7 is a plan view of the same.

FIG. 8 is a bottom view of the same.

FIG. 9 is a development view of the same.

FIG. 10 is a sectional view showing an embodiment of a vibration absorber.

FIG. 11 is a sectional view showing another embodiment of the vibration absorber.

FIG. 12 is a cross-sectional view showing an example of a pressing device.

FIG. 13 is a cross-sectional view showing an example of a seal member.

FIG. 14 is a cross-sectional view showing an embodiment in which a swirl flow generation mechanism is provided at the air flow inlet.

FIG. 15 is a cross-sectional view showing an embodiment in which an airflow speed increasing mechanism is provided at an airflow inlet.

FIG. 16 is a diagram showing an application example of a gravity discharge type vertical rotary valve.

FIG. 17 is a view showing an application example of an air flow discharge type vertical rotary valve.

FIG. 18 is a diagram showing an application example of an air flow discharge type vertical rotary valve in which the raw material is charged into a line and discharged as a product in one unit.

[Explanation of symbols]

 1 Rotary Valve 2 Housing 3 Raw Material Input Port 4 Rotor 6 Raw Material Discharge Port 7, 8 Seal Plate 9 Pressing Mechanism 30 Air Flow Inlet 32 Swirling Flow Generation Mechanism 33 Twisted Blade 34 Air Flow Accelerating Mechanism 406 Raw Material Storage Chamber 701 Communication Hole 801 Communication Hole

Claims (5)

[Scope of utility model registration request] 1. A rotor arranged in a housing and rotating in a horizontal plane is provided with a plurality of raw material storage chambers, into which raw material is introduced through an inlet provided on the housing, and a phase with the inlet provided on the seat surface of the housing. In a vertical rotary valve in which raw materials are discharged from the displaced outlets, a plurality of the inlets are provided with a predetermined angle phase shift in a plane, and the outlets are arranged so as to face the inlets. And a plurality of plate-shaped sealing members are provided above and below the rotor,
Each of the seal members is provided with a communication hole for individually communicating the feed port and the discharge port with the raw material storage chamber that rotates, and a pressing mechanism for pressing the upper seal member in the axial direction of the rotor is provided in the housing. Vertical type rotary valve characterized by. 2. A rotor arranged in the housing and rotating in a horizontal plane is provided with a plurality of raw material storage chambers, the raw material is introduced from an input port provided on the housing, and the superheat medium is supplied from an air flow inlet provided on the housing. In a vertical rotary valve in which raw materials are discharged from an outlet provided on the seat surface of the housing and out of phase with the inlet, a plurality of the inlets are shifted in phase by a predetermined angle. Provided,
A plurality of the airflow inlets are provided with a predetermined angle phase shift in a plane, and a plurality of the airflow outlets are provided corresponding to the airflow inlets, and plate members are provided above and below the rotor, and the seal members are provided. The inlet, outlet, and airflow inlet are provided with communication holes for individually communicating the rotationally moving raw material storage chamber with each other, and the housing is provided with a pressing mechanism for pressing the upper seal member in the axial direction of the rotor. A vertical rotary valve featuring. 3. The vertical rotary valve according to claim 2, wherein a swirl flow generating mechanism is provided at the air flow inlet. 4. The vertical rotary valve according to claim 3, wherein the swirl flow generating mechanism is formed of a twist blade. 5. The vertical rotary valve according to claim 2, wherein an air flow speed increasing mechanism is provided at the air flow inlet.