TWI745327B - Low profile receiver - Google Patents

Abstract

A receiver having a horizontally elongated chamber within a housing, the chamber having a convex triangular cross-section and a dump flap defining a bottom vertex of the triangular cross-section, with a horizontal air/vacuum resin material inlet connecting to the chamber, and a horizontal air/vacuum outlet leading from and connected to the chamber.

Description

Low profile receiver Cross-reference of related patent applications

This application is a partial continuation of US Patent Application No. 29/550,569 entitled "Low Profile Receiver" filed by Stephen B. Maguire on January 5, 2016; a priority claim is made according to 35 USC 120.

The present invention relates to a receiver, and particularly a low-profile receiver.

The terms "air/vacuum", "vacuum/air" and "air/vacuum airflow" are used synonymously and interchangeably herein to indicate that the vacuum pump is sucked at sub-atmospheric pressure. The moving airflow of the air below. This kind of mobile "air/vacuum" airflow is usually used to transfer granular plastic resin material in equipment where the granular plastic resin is molded or extruded into finished or semi-finished plastic parts.

"Receiver" is a term used in the plastics industry to indicate a device in which granular plastic resin materials are loaded into a hopper for subsequent use by compression, or injection molding press, Or temporarily hold the granular plastic resin material before processing in the extruder. As used herein, the term "processing machine" refers to the general term for such compression molding machines, injection molding machines, and extruders.

The receiver usually includes a vacuum chamber, which effectively pulls the granular plastic resin material into the receiver by the vacuum existing in the vacuum chamber. A vacuum pump is connected to the receiver to establish the required vacuum in the vacuum chamber to pull the granular plastic material into the receiver. This helps to move the granular plastic resin material from a remote location to the hopper to be fed by the receiver, and the hopper is usually positioned on the processing machine. The receiver and vacuum pump are usually part of a larger resin delivery system that transfers the granular plastic resin from the supply source to the receiver.

The receiver can be located on a surge bin, or on a temporary storage unit other than the hopper.

The receiver is loaded periodically. Specifically, as an operation cycle, the receiver is loaded with granular plastic resin material, and then the granular plastic resin material is poured. Accordingly, the receiver needs some sort of collection box or surge hopper below the receiver to receive the granular plastic resin material when the granular plastic resin material is fed to the processing machine.

Generally speaking, the vacuum source is remote, that is, it is not integrated into the receiver itself. The simplest and basic form of the receiver is a simple chamber, which has a vacuum circuit connected to the chamber to remove air from The chamber is pulled out to establish a vacuum inside the chamber. The vacuum then sucks the granular plastic resin material into the cavity portion of the receiver. The receiver therefore has a material circuit connected to it for the granular plastic resin material to flow into it, or, more precisely, the granular plastic resin material to be drawn into it by vacuum. The receiver usually has a valve or gate at the bottom of the receiver to allow granular plastic resin material to pass from the bottom of the receiver when the vacuum is broken or removed, or when the valve or gate is additionally opened electrically or pneumatically Fall out. Since the receiver has a storage area, the storage area has a relatively large volume and cross-sectional area compared to the duct through which the air/vacuum and granular material mixture travels. When the mixture reaches the storage area of the receiver, the moving air/volume airflow The speed drops. The kinetic energy of the air flow is no longer enough to carry the granular resin, so the resin falls to the bottom of the receiver.

All known receivers have these characteristics in common.

An important feature of the low-profile receiver of the present invention is to provide a very low-profile receiver when installed. The processing machine usually has several auxiliary items mounted above the throat of the processing machine. These items may include magnetic gates; additional feeders; simple material funnels; large drying funnels; gravity mixers; and other devices. The receiver is usually installed above this collection of equipment. Such upwardly stacked items may conflict with height limits or restrictions, such as ceilings or mezzanines in plastic processing equipment. Access to the receiver for services can also become a problem. As the altitude becomes too high, safety issues arise.

In the low profile receiver according to the present invention, the receiver only increases by 7 inches in height in one configuration. This is compared with the existing receiver design, which requires an increased height of 15 to 25 inches due to its configuration.

The low profile receiver of the present invention includes filter blow off, which effectively cleans the entire filter. This cleaning is very effective, and it substantially eliminates the regular filter removal required by conventional filter blow-off designs in known receivers.

A true full-range cloth filter is always blocked when used in a traditional receiver, and therefore, the traditional receiver most often uses only a metal filter as a filter. The metal filter blocks the granular resin material particles, but does not block or capture dust and fines. The passage of dust and fines requires an additional filter at the vacuum pump to capture the dust and fines, otherwise the dust and fines will damage the vacuum pump.

The low-profile receiver of the present invention includes a full cloth filter, which blocks dust and fine debris; the full cloth filter is easy to clean in each cycle by the filter blowing device.

In one of its faces, the present invention provides a receiver having a horizontally elongated body with an internal cavity. The inlet duct of the horizontal granular plastic material communicates with the internal chamber of the elongated body. The horizontal vacuum outlet duct is connected to the elongated body. A removable dust and material fines (preferably cloth) filter is positioned between the inlet duct and the outlet duct, and collects the dust before the dust and material fines can enter the vacuum outlet duct guided to the vacuum pump With fine shavings of material. Capture dust by using a cloth filter With fine material, no filter is needed at the vacuum pump.

The receiver also includes a blower device for guiding the air to the filter to clean the remaining dust and material fines of the filter. The outlet dumping baffle extends the longitudinal length of the lower end of the longitudinally elongated body of the receiver in which the granular resin material is stored. The outlet dumping baffle can move between the open position and the closed position. In the open position, the granular plastic material in the body can freely flow down to the body. In the closed position, the dumping baffle defines The bottom part of the chamber. With the dumping baffle extending the horizontal and longitudinal length of the main body, when the dumping baffle moves to the open position, the main body is emptied almost instantaneously. Therefore, the receiver empties much faster than known receivers.

The receiver body is preferably wider than its height, and preferably has a substantially convex triangular cross-section.

In another aspect of its central aspect, the present invention provides a method for temporary storage of the granular resin material before processing the granular resin material into a finished product or a semi-finished product by molding or extrusion. The method includes feeding an air/vacuum gas stream with granular resin material into the chamber along a first horizontal direction under vacuum. The method is performed by reducing the speed of the air/vacuum airflow in the chamber, so that the granular material entrained in the airflow falls to the bottom of the chamber. The method is performed by passing the air flow through the filter in the second horizontal direction and releasing the air flow from the chamber in the first horizontal direction. In response to the weight of the material, the baffle defining the bottom of the chamber swings to the open position, allowing the granular material to fall from the chamber.

In its other aspect, the present invention provides a The receiver has a longitudinally elongated body, and the body has an internal cavity extending the length of the body. The horizontal duct is provided as an inlet for air/vacuum air flow with granular resin material and communicates with the internal chamber of the elongated body. The horizontal air/vacuum outlet duct is connected to the internal chamber of the elongated body. The dumping baffle extends horizontally along the lower end of the inner chamber and can move between the open position and the closed position. At the open position, the granular plastic material in the chamber can freely flow down to the outside of the chamber , In the closed position, the baffle defines the bottom of the chamber.

In this aspect of the present invention, the receiver has a dump baffle that extends the horizontal length of the inside of the chamber, and also includes a dust and material fines filter between the inlet duct and the outlet duct, which is used to remove dust and materials. Before the fines enter the vacuum outlet duct, the dust and material fines are collected, and a blower device is also included to guide air to the filter to clean the remaining dust and material fines of the filter. The dumping baffle can be rotatably moved between the open position and the closed position; the body of the receiver is wider than its height; when the chamber is empty, the dumping baffle swings to the closed position under the influence of gravity ; The filter is a cloth filter; the inlet for the granular plastic material is in the laterally extending surface of the receiver.

In yet another part of this aspect of the invention, the outlet for the air/vacuum airflow is in the lateral surface of the receiver; the body of the receiver has a convex triangular cross-section; the cavity has at least one convex wall; the cavity is It is longer than its height, and the chamber is longer than its width.

In yet another aspect of its aspect, the present invention provides a method for processing granular resin materials into finished products by molding or extrusion. Or before the semi-finished product, it is used for the temporary storage of granular resin material, wherein this method includes horizontally feeding the air/vacuum air stream with the granular resin material into the chamber under vacuum. The method is carried out by reducing the speed of the air flow in the chamber, so that the granular material entrained in the air flow falls to the bottom of the chamber. The method then continues to draw airflow from the chamber, thereby maintaining the vacuum in the chamber. The method can be summarized by releasing the vacuum from the chamber. Due to the weight of the granular material staying in the bottom of the chamber, the baffle defining the bottom of the chamber swings to the open position, allowing the granular material staying on the baffle to fall from the chamber. In this aspect of the invention, the air/vacuum airflow preferably passes through the cloth filter. More preferably, the air flow through the cloth filter is performed before the vacuum is released from the chamber. Also preferably, the air flow horizontally passes through the cloth filter perpendicular to the air flow.

In yet another aspect of its central face, the present invention provides a receiver having a horizontally elongated cavity, wherein the cavity has a convex triangular cross-section. The chamber includes a dump baffle that defines the bottom apex of the triangular cross-section. The horizontal air/vacuum resin material mixture inlet is connected to the chamber, and the horizontal air/vacuum outlet is guided from and connected to the chamber. The modular control part is removable from the body, the chamber is present in the body, and a manually actuable clamp releasably keeps the control section in engagement with the body.

In yet another aspect of its central aspect, the present invention provides a receiver having a longitudinally elongated body, and the body has an internal cavity extending the length of the body. The horizontal duct used as the inlet of the air/vacuum air flow with the granular resin material communicates with the internal chamber of the elongated body. The horizontal air/vacuum outlet duct is connected to the internal chamber of the elongated body. In The dust and material fines filter between the port duct and the outlet duct is arranged to collect dust and material fines, and is positioned to filter the airflow before entering the vacuum outlet duct. The receiver also includes a blower device for guiding the air to the filter in a direction opposite to the direction of the vacuum/air flow when the air flows through the filter, so as to clean the remaining dust and material fines of the filter, and tilt The unloading baffle extends horizontally along the lower end of the inner chamber, wherein the dumping baffle is movable between an open position and a closed position. At the open position, the granular plastic material in the chamber can freely move toward Flow down to the outside of the chamber. In the closed position, the baffle defines the bottom of the chamber.

In a preferred embodiment of the receiver, the dump flap is pivotable between a closed position and an open position. The outlet dump baffle is a counterweight that swings to the closed position under gravity and remains closed in response to the vacuum being drawn in the receiver, allowing the receiver to fill. Once the vacuum sucked into the receiver body (the granular resin material transferred to the receiver by the air/vacuum airflow is collected in this body) is closed, there is no longer any need to keep the receiver dump baffle in Internal vacuum force in the closed position. The weight of the granular resin material on the dump baffle causes the dump baffle to move to the open position, and the granular resin material falls out of the receiver due to gravity.

10: receiver

12: Inlet duct

14: Piston cylinder (air cylinder)

16: dump baffle

16A: End part (triangular part)

16B: Triangular part

16C: Longitudinal extension

16D: Main longitudinal extension

16E: Secondary longitudinal extension

17: Control Department

18: Control department cladding

20: body

22: filter

24: Latch (fixture, lock)

28: Outlet duct

30: The first end plate (front end plate)

32: The first bottom flange

32A: Ear piece (lip part)

34: second bottom flange

34A: Ear piece

36: side

36L: side

36R: side

38: Unloading trough (chute, outlet trough)

42: top of the shell

46: The first middle plate

48: second intermediate board

50: Front panel (front housing panel)

52: rear panel

54: discharge flange

60: Blowback device (blowing device)

68: pin

74: Horizontal blowback support plate at the inlet end

76: Horizontal plate at the outlet end

78: Vertex

80: Horizontal support plate

82: Mounting flange (front mounting flange)

84: Rear mounting flange

86: filter opening

88: accessories

90: Rear panel

102: open interior

104: Spacer

106: Split pin

108: Disc

110: The first internal compartment (the first compartment)

112: second internal compartment (second compartment)

A: Arrow

B: Arrow

C: Arrow

Figure 1 is an isometric view of a low profile receiver according to the present invention, where the top, left and left ends of the receiver are visible.

Fig. 2 is a front view of the left or front end of the receiver depicted in Fig. 1 with the receiver dumping shutter in an open position. Section line in Figure 2 8-8 and 9-9 indicate where the cross-sectional views presented in FIGS. 8 and 9 in this document are cut.

Fig. 3 is a front view of the right or rear end of the receiver shown in Figs. 1 and 2 with the receiver dump shutter in an open position.

Fig. 4 is a right side view of the receiver shown in Fig. 1, Fig. 2 and Fig. 3, with the receiver dump shutter in an open position.

Fig. 5 is a front view of the left side of the receiver shown in Figs. 1, 2, 3, and 4, with the receiver dump baffle in an open position.

FIG. 6 is a view of the top of the receiver shown in FIG. 1, FIG. 2, FIG. 3, FIG. 4, and FIG. 5.

Fig. 7 is a view of the bottom of the receiver shown in Figs. 1 to 6 with the dump baffle in an open position for discharging granular resin material.

Fig. 8 is a cross-sectional view of the receiver shown in Figs. 1 to 7 taken along the line in Fig. 2 and arrows 8-8, in which the dump baffle has been shown in the open position.

Fig. 9 is a cross-sectional view of the receiver shown in Figs. 1 to 8 taken along the line in Fig. 2 and arrows 9-9, in which the dump baffle is shown in a closed position.

Fig. 10 is an exploded perspective view of the receiver shown in Figs. 1-9, showing the modular structure of the receiver.

Figure 11 is an exploded isometric view of the receiver depicted in Figures 1 to 10, showing details of the receiver components.

Figure 12 is an exploded isometric schematic diagram of the specific components of the receiver shown in Figures 1 to 11, and lines and arrows are provided to illustrate the through The receiver transfers the vacuum/air flow and the flow of the granular resin material being transferred.

Figure 13 is a cross-sectional end view of the lower part of the left end of the receiver shown in Figures 1 to 12, depicting the discharge chute and the left triangular part of the dumping baffle, and the dumping baffle is in the open position .

Fig. 14 is a cross-sectional end view of the lower part of the receiver shown in Figs. 1-13, depicting the discharge trough and the left triangular part of the dumping baffle, and the dumping baffle is in the closed position.

With reference to the drawings and particularly to FIG. 1, the receiver according to the present invention is generally designated as 10. The inlet duct 12 receives the moving air/vacuum air flow with the granular resin material for temporarily storing the granular resin material in the receiver 10. The inlet duct 12 is installed in a first end plate 30 oriented vertically. Also installed in the first end plate 30 is the air-actuated piston-cylinder assembly 14, which controls the air/vacuum flow through the receiver 10 in an on-off manner as explained below.

The control part 17 of the receiver 10 is maintained in the control part enclosure 18, wherein the control part enclosure 18 is shown in FIG. 1. The receiver 10 further includes a body (or housing) 20, which serves as a granular material storage container or chamber for temporarily storing the granular resin material therein. The control part enclosure 18 and the components therein are fixed to the body 20 via clip-on latches 24, two of which are visible in FIG. 1. These clip-on latches facilitate quick disassembly of the receiver 10 and allow the control section to be installed in the control section enclosure 18 17 is quickly removed from the remainder of the receiver 10 for adjustment, repair, filter replacement, etc.

The receiver 10 also includes an outlet duct 28 through which the air/vacuum airflow is sucked by a vacuum pump, which is not shown in the figure. In Figure 1, the inlet end horizontal blowback support plate 74 is visible, extending from below the control portion 17. The control portion 17 is invisible or unlabeled in Figure 1, but is shown in other drawings. And assign a label.

As shown in Fig. 1 and particularly preferably shown in Figs. 2 and 3, the body 20 has convex curved sides 36, and these sides are designated as 36L and 36R for the left and right sides, respectively. (As used herein, the word "left" refers to the portion of the lateral surface of the receiver that is visible in FIG. 1, and refers to the right side of the user in FIGS. 2 and 3.) Still referring mainly to FIG. 2 and 3, at the bottom of the side 36, extending from the sides 36L and 36R and fixed to the sides 36L and 36R are the first bottom flange 32 and the second bottom flange 34, wherein the first bottom flange 32 It is longer than the second bottom flange 34 in the vertical direction. The second bottom flange 34 is substantially shielded by the end portion 16A of the dump baffle (or bottom baffle) 16 in FIG. 2.

Still referring mainly to FIG. 2, the dumping baffle 16 is installed for pivotal movement relative to the granular resin material discharge groove 38, which is protruded from the first bottom flange 32 and the second bottom. The portion of the rim 34 extending vertically downward is formed, and the granular resin material discharge groove 38 runs the longitudinal length of the body 20 of the receiver 10 (in the figure, the first bottom flange 32 and the second bottom flange 34 The vertically downward part is not independent Place a label). The first bottom flange 32 and the second bottom flange 34 have ears designated as 32a and 34a, which extend perpendicularly to the housing side 36 and facilitate the manufacture, maintenance and operation of the receiver 10

The left and right sides 36 of the main body 20 are designated as 36L and 36R for the left and right sides of the receiver 10, where the left side of the receiver 10 is the side visible in FIG. 1. When the discharge chute 38 is opened because the dump baffle 16 is in the open position shown in FIGS. 2, 3, and 13, the granular resin material stored in the body 20 passes through the discharge chute 38 due to gravity. Flow out of the receiver 10 downwards.

In Fig. 2, the structure and configuration of the receiver 10 are shown particularly well. The receiver 10 and particularly its body 20 are wider at the vertices or angles where the top 42 of the housing meets the sides 36L, 36R; these vertices or angles are indicated by 78 in FIG. 2. The ratio of the width of the receiver 10 (measured as the distance between the apexes 78) and the height of the receiver 10 (measured from the high point of the top 42 of the housing to the horizontal support plate 80) that is visible in FIG. 2 is About 5:3, which means that the body 20 of the receiver 10 is about 40% wider than its height.

In FIG. 2, the dump baffle is shown in the open position, so that the granular resin material can flow out of the receiver 10 through the discharge trough 38. The left triangular part of the dump baffle 16 is indicated by 16A in FIG. 2. The longitudinal extension of the dump baffle 16 is shown as 16C in FIG. 2 and can only be seen as a pair of closely spaced lines. The longitudinally extending portion 16C of the dump baffle 16 runs the longitudinal length of the body 20. The dump barrier 16 is pivotally movable around a pair of pins 68, one of which is shown in FIG. 2.

2, the inlet duct 12 and the pneumatic piston cylinder 14 are clearly shown as being installed in the front plate 50. It should be noted in FIG. 2 that the control section enclosure 18 defines the outer periphery of the control section 17 and is slightly inside the housing top 42 and the housing sides 36L, 36R. The control part cladding 18 is connected to the horizontal support plate 80 shown in FIG. 2. Still referring to FIG. 2, the mounting flange 82 is firmly fixed and connected to the inlet end horizontal blow-back support plate 74 with a portion extending vertically downward from it. The downwardly extending portion of the front mounting flange 82 is equipped with a pair of holes for mounting the receiver 10 to the associated adjacent equipment when needed.

3, the body 20 of the receiver 10 has a substantially convex triangular shape in cross section, and the top 42 of the housing and the sides 36L, 36R of the housing again exhibit their convex triangular shape. The outlet of the outlet duct 28 is clearly located in the rear end plate 90. The rear mounting flange 84 is mounted on the outlet end horizontal support plate 76 and has an upwardly extending part for mounting the receiver 10 on auxiliary equipment. The first bottom flange 32 is shown in FIG. 3. In FIG. 3, the dumping baffle 16 is again visible, and the right triangular portion 16B is clearly displayed, and the longitudinal portion 16C is again displayed as a pair of lines, which indicates that the longitudinal portion 16C runs away from the viewer and is vertical The viewer in Figure 3. The outlet end horizontal plate 76 is shown in FIG. 3.

4, the receiver 10, the main body 20, the control part cladding 18, the inlet duct 12, the air piston cylinder 14 and the outlet duct 28 are all well shown. In Fig. 4, the two pins 68 around which the dumping baffle 16 rotates are clearly shown, and the longitudinally extending of the dumping baffle 16 The same is true for part 16C. The main longitudinally extending flange 16D and the smaller longitudinally extending flange 16E are also visible in FIG. 4. As noted above, FIG. 4 depicts the dump baffle 16 in the open position as shown in FIGS. 2, 3 and 13.

Referring to FIG. 5, the first bottom flange 32 is well shown as extending the length of the body 20 longitudinally to define a portion of the outlet groove 38. The lip portion 32A represents the lip portion of the first bottom flange 32; the lip portion 32A is also shown in FIG. 2. In Fig. 5, the dumping baffle 16 is slightly hidden by the first bottom flange 32, as can be understood by comparing Fig. 5 with Fig. 2, and note that Fig. 5 is a side view, and Fig. 2 is End view. The pin 68 on which the dump flap 16 is mounted and rotated is again shown in FIG. 5, as are the inlet duct 12, the piston cylinder 14 and the outlet duct 28, and the inlet end horizontal blowback support plate 74 The same is true for the horizontal support plate 76 at the outlet end.

In FIG. 6, the top of the receiver 10, the inlet duct 12, the outlet duct 28, the top 42, the latch 24, the control part enclosure 18 and the outlet end horizontal support plate 76 are all shown. The dumping baffle 16, its various parts, and various parts associated with it are blocked from the perspective of the top view provided in FIG. 6.

Referring to FIG. 7, the bottom of the receiver 10 is shown, and the dump baffle 16 is in the open position, and the discharge flange 54 is obvious, as is the open interior 102 of the body 20. The pins 68 about which the dump barrier 16 rotates are shown at either end of the dump barrier 16 and engage the left and right triangular portions 16A, 16B of the dump barrier 16. For the other views discussed above The figure shows the inlet duct 12, the piston cylinder 14, the inlet end horizontal blowback support plate 74, the outlet end horizontal support plate 76, the outlet duct 28, and the sides 36L, 36R of the receiver 10 in a similar manner.

Referring mainly to Figures 8 and 9, in Figure 8, the dumping baffle 16 is shown in an open position. In the open position, the granular resin material stored in the body 20 is caused by gravity to the receiver 10 The outflow of the body 20 is discharged by itself.

Still referring to FIG. 8, the control section for the receiver 10 is roughly designated 17 and includes two internal compartments, which are numbered 110 and 112 in FIG. 8. The first internal compartment 110 is delimited by the front end plate 30 and by the first intermediate plate designated 46 in FIG. 8. The first compartment 110 is further delimited by a horizontal support plate 80 and appropriate coverings. The horizontal support plate 80 effectively forms the floor of both the first compartment 110 and the second compartment 112. The appropriate coverings are for illustration purposes. The formula is not shown in the diagram for the sake of clarity. The control unit 17 also includes a second compartment 112, which is delimited by the first intermediate plate 46 and the second intermediate plate 48, by the horizontal support plate 80, and by the same upper plate. In order to improve the clarity of the drawings, the same The upper plate is not shown in the diagram.

The first compartment 110 is effectively under ambient pressure, while the second compartment 112 must be maintained airtight. Therefore, the compartment 112 is preferably manufactured by welding the first middle plate 46 and the second middle plate 48, the horizontal support plate 80, the top plate not numbered and not shown, and the side not shown in the drawings. , To ensure the air tightness of the second compartment 112. This airtight structure is necessary for the normal operation of the blowback device 60 described below of.

Further visible in FIG. 8 is a disc 108 which is fixed to a piston rod extending from the piston cylinder 14. When the piston cylinder 14 is actuated, the disc 108 acts to close the end of the outlet duct 28, that is, its inlet opening, in an airtight manner.

Surrounding the outlet duct 28 is a spacer 104 which is held in position relative to the outlet duct 28 by a cotter pin 106. The spacer 104 is preferably elastic and functions to maintain the required air-tight joint where the outlet duct 28 passes through the rear plate 52 and through the front housing plate 50. The front housing plate 50 shown in FIG. 8 should not be confused with the front end plate 30, and the front end plate 30 is also visible in FIGS. 8 and 2. The outlet duct 28 is matched with an unlabeled suitable fitting that receives the disc 108 when the piston cylinder 14 is actuated and the disc 108 occupies the position shown in FIG. 8 to create an airtight seal.

Referring to FIG. 9, the cloth filter 22 is preferably installed in a suitable orifice formed in the front plate 50. Adjacent to the filter 22 and mounted on the first intermediate plate 46 is a blower device 60 of the type disclosed in US Patent 8,753,432. The blower device 60, sometimes referred to as a "blow-back device", has its blower outlet axially aligned with the filter 22, and is oriented such that when the blower 60 delivers the blower, the blower is directed to the filter The filter 22 is in contact with the filter 22 at a substantially vertical angle. The blowback provided by the blowback device 60 is preferably provided before each time the receiver 10 is filled with the granular resin material. The blowback device 60 keeps the filter 22 clean, and dust and fines are blown out of the filter 22 and fall to the bottom of the open interior 102 of the body 20 Department. The use of the blowback device 60 and the filter 22 ensures that the air/vacuum airflow entering the second compartment 112 through the filter 22 and entering the vacuum pump does not carry dust or fines.

With the action of the vacuum pump sucking the air/vacuum air flow through the outlet duct 28, the required air/vacuum air flow is sucked through the filter 22. 8 and 9, when the disc 108 is removed from the orifice that defines the entrance of the outlet duct 28 (that is, when the disc 108 is removed from the second intermediate plate 48), due to the second compartment The airtight structure of 112 results in a free flow of air/vacuum airflow from the open interior 102 of the body 20 through the filter 22 and into the outlet duct 28. For the same reason, when the piston cylinder 14 is actuated and the disc 108 closes the orifice of the outlet duct 28, the vacuum in the open interior 102 of the body 20 is effectively relieved.

The weight of any granular resin material remaining in the open interior 102 of the main body 20 causes the dump baffle 16 to rotate to the position shown in FIG. 2, in which the discharge slot 38 is open. At this position, the granular resin material stored in the body 20 flows out of the body 20 downward. It should be noted that the left triangular portion 16A and the right triangular portion 16B of the dumping baffle 16 are constructed in a geometrical shape, so that in the absence of any granular resin material in the body 20, they are in contact with the remaining dumping block The plate 16 will rotate to the closed position depicted in FIG. 14. When a vacuum is applied by sucking air/vacuum airflow through the outlet duct 28 at a pressure lower than atmospheric pressure, the vacuum is transmitted back to the open interior 102 of the body 20 through the second compartment 112 and the filter 22, thereby helping to reduce the pressure. The discharge flap 16 is maintained in the closed position. Since the pressure in the open interior 102 is lower than atmospheric pressure, this causes It corresponds to the inward closing force of the dump flap 16.

10, the modular structure of the receiver 10 is drawn. The control part 17 is easily removed from the body 20 to replace the filter 22 when necessary. The screw connection and sealing gasket shown in FIG. 8 are used to keep the control portion 17 in operative engagement with the main body 20. When service is required or the filter 22 must be replaced, these connections facilitate quick disassembly of the receiver 10. The clamp 24 is easily loosened to release the control part 17 from the body 20. In FIG. 8, the second intermediate plate 48 is spaced apart from the front plate 50. By providing suitable elastic gaskets 114, 116 for sealing at the orifice defining the entrance of the outlet duct 28, the lock catch 24 can be unlocked, thereby allowing the control portion 17 to be essentially slidingly removed from the body 20.

FIG. 11 shows the receiver and all its parts, and the modular structure and separation of the control portion 17 and the main body 20 are immediately obvious.

As described above, the dumping baffle 16 has two triangular parts represented by 16A and 16B respectively, which are located at the two ends of the dumping baffle 16. The triangular portion 16A is shown in FIG. 2, and the triangular portion 16B is shown in FIG. 3. Running between the triangular portions 16A, 16B is the longitudinally elongated portion 16C of the dump baffle 16. The elongated portion 16C is more clearly visible in FIG. 9 (and FIG. 7), where the dumping baffle 16 is shown in FIG. 9 as closing the discharge chute 38 and preventing any granular resin material from flowing downward. The location of the body 20 of the receiver 10. The horizontal elongated portion 16C of the dump baffle 16 is represented by closely spaced double lines in FIGS. 2 and 3.

Preferably, there are three cables connected to the receiver control, It is guided from the power supply unit to the receiver, and the power supply unit preferably provides power to the vacuum pump to establish a vacuum to draw the air-material mixture into the receiver. Two of these lines from the power supply are preferably controlled by a vacuum pump, which supplies the required 24 volts to the receiver. The third line is the signal line. When the receiver requires granular resin material and the dumping shutter is closed, this third line provides power to the signal line, and the microprocessor opens the receiver 10 when it knows it.

Each receiver 10 preferably includes such a microprocessor. In addition, the microprocessor is preferably provided in the power supply unit. The microprocessor in the receiver preferably detects that the dumping flap has been closed, and informs the power supply unit associated with the vacuum pump to run a set period of time calculated in advance and input to the microprocessor. Alternatively, the receiver 10 may operate until the high material level sensor in the receiver 10 is covered, meaning that the receiver 10 is filled with granular resin material. The timing part of the microprocessor functions as a safety pause, so that in the event of clogging of the granular resin material or the event of the granular resin material being unable to be obtained from the source, the receiver 10 will not operate forever.

The top 42 of the housing and the sides 36L, 36R of the housing are all outwardly curved. The outward curvature of the housing top 42 and the housing sides 36L, 36R resists the atmospheric pressure that generates forces on these sides 36L, 36R and the housing top 42. Due to the vacuum that exists in the body of the receiver 10 during operation (in fact, slightly below atmospheric pressure), the force of the atmospheric pressure tends to push the top 42 of the housing and the sides 36L, 36R inward. The curved and protruding shapes of the sides 36L, 36R and the top 42 of the housing are conducive to the small size of the receiver 10 -Inch, compact design and high-capacity characteristics.

The tipping baffle 16 and in particular the triangular portions 16A, 16B of the tipping baffle 16 are configured for pivotal movement of the dumping baffle 16 about the pin 68. As mentioned above, the configuration and weight of the dumping baffle 16, and especially the weight of the left and right triangular portions 16A, 16B and the longitudinal portion 16C of the dumping baffle 16 make the dumping baffle 16 rotate as shown in FIG. 13 The closed position. When the dump flap 16 reaches the closed position, the vacuum sucked by the vacuum pump maintains the dump flap 16 in the closed position.

The air cylinder 14 effectively controls the flow of air passing through the receiver 10 and a mixture of air or vacuum and resin material. As shown in FIG. 8, the air cylinder 14 includes a shaft portion extending therefrom, and a circular disc 108 is installed at the end of the shaft portion 70; the circular disc is indicated as 108 in FIG. 8. When the air cylinder 14 is activated, the shaft portion 70 extends therefrom, and the circular disc 108 closes the opening of the outlet duct 28.

During operation, as the receiver 10 is receiving the granular resin material entrained into the vacuum/air flow (which enters through the inlet duct 12), due to the suction force of the vacuum pump sucked through the outlet duct 28, the block is dumped The plate 16 is held in the closed position. Once the vacuum is closed, either by closing the vacuum pump, or by closing the air cylinder 14 of the outlet duct 28, thereby precluding further extraction of the vacuum through the receiver 10, or if the weight of the granular resin material changes Large enough to overcome the vacuum suction force that tends to keep the dump flap 16 in the closed position, then as the dump flap 16 is forced to open due to the weight of the resin material in the receiver 10, the dump flap 16 Move to the open position.

During operation, the dump flap 16 is opened due to the weight of the granular resin material particles that stay in the body 20 of the receiver 10 and stop on the dump flap 16. There is no weight of the granular resin material, or once the granular resin material has flowed out of the receiver, the dumping baffle is due to gravity and the configuration of the dumping baffle (especially the left and right triangular parts 16A, 16B of the dumping baffle) With the geometric shape of the longitudinally extending portion 16C) and swing closed. In the normal suspended position, except for the slight gap between the surface of the baffle and the edge of the opening to the open interior 102 of the body 20, the dump baffle 16 is closed.

When the receiver dumps the load of the granular resin material just outside the receiver 10 and, for example, stays in the funnel (not shown in the drawings and not part of the receiver 10) located under the dump baffle 16 When a pile of granular resin material is attached, the dumping baffle 16 can be kept open by the pile of granular resin material. In this case, due to the existence of the pile under the receiver 10 at the moment it was dumped before, when the granular resin material is dumped, the dump flap 16 is opened and the granular resin material may not have enough space from the receiver 10 Flow out completely.

As the granular resin material is used by the associated processing machine, any granular resin material remaining in the receiver 10 flows out. When the granular resin material previously dumped under the receiver 10 drops to the level below the dump flap 16, the dump flap 16 swings and closes, and another batch of granular resin material can be loaded into the receiver 10 . The vacuum pulls the dumping baffle 16 tightly to establish a vacuum seal, allowing the air/vacuum air flow with the granular resin material to be vacuum fed into the open interior 102 of the body 20.

In FIG. 12, the receiver 10 is schematically shown. Not all components of the receiver 10 are given numbers or shown in detail in FIG. 12 to improve the clarity of the drawings. FIG. 12 depicts the flow of vacuum/air and material through the receiver 10.

Specifically, the vacuum/air flow with the granular resin material enters the receiver 10 through the inlet duct 12, as indicated by the dashed line and arrow A. The vacuum/air granular material mixture passes into the interior of the body 20, where the vacuum/air flow that has entered into the larger air space volume (that is, the open interior of the body 20) is guided from the guide to the inlet duct The speed of the air/vacuum airflow in the duct of 12 is greatly reduced, and the granular resin falls out of the vacuum/air airflow in the downward direction due to gravity.

At lower speeds, particles of resin material fall out of the air/vacuum air stream. The downward flow of this granular resin material is indicated by a longer dashed line and arrow B in FIG. 12. The vacuum/air flow drawn by the vacuum pump not shown in FIG. 12 is sucked out from the inside of the body 20, as indicated by the arrow C in FIG. 12 and the line formed by the long and short dashes . In the direction opposite to the direction of arrow A, the vacuum/air mixture flows out from the inside of the body 20 in a direction toward the control portion 17 of the receiver 10. The vacuum/air flow passes through the filter 22, where fines and dust are removed from the vacuum/air mixture moving through the filter 22, and the filter 22 is installed in the filter opening 86. The vacuum/air mixture from which dust and fines have been removed is diverted via the fitting 88 and enters the outlet duct 28, travels through the outlet duct 28, and leaves the receiver 10 And proceed to the vacuum pump. When a sufficient amount of weight is accumulated to enable the dump flap 16 to be opened, the granular resin material falls out of the open interior 102 of the body 20 in response to gravity.

The main advantage of the inlet duct 12 and the outlet duct 28 (which are horizontal and respectively enter and exit the receiver 10 through orifices formed in the vertically extending surface of the receiver 10) is that the receiver 10 has a very low height, thereby Provide space for other parts in plastic resin processing equipment.

10: receiver

12: Inlet duct

14: Piston cylinder

16: dump baffle

20: body

28: Outlet duct

74: Horizontal blowback support plate at the inlet end

86: filter opening

88: accessories

A: Arrow

B: Arrow

C: Arrow

Claims (6)

A receiver for temporarily storing granular materials conveyed by pneumatic vacuum before its processing. The receiver includes: an elongated body with a chamber defining a part of the body; an inlet duct for carrying the granular material The inlet duct of the pneumatic vacuum air flow is connected to the inside of the chamber of the elongated body; the outlet duct of pneumatic vacuum air flow is connected to the inside of the chamber of the elongated body; dust and material fines A filter is connected to the chamber for the vacuum airflow to pass therethrough, and is used to collect dust and material fines from the vacuum airflow before the vacuum airflow enters the outlet duct of the pneumatic vacuum airflow; a blower device is connected To the chamber, it is used to guide the jet of compressed air to the filter in the direction opposite to the direction through which the airflow passes, so as to clean the remaining dust and material fines of the filter; dump the baffle along The lower end of the chamber extends horizontally and can move between an open position and a closed position. At the open position, the granular material in the chamber can freely flow downwards when the pneumatic vacuum material is stopped. Outside the chamber, the baffle is sucked to the closed position by gravity, and the vacuum caused by conveying pneumatic vacuum material to the chamber is maintained in the closed position to define the bottom of the chamber. A receiver for temporarily storing granular materials conveyed by pneumatic vacuum before its processing. The receiver includes: a longitudinally elongated body with a convex triangular cross section and a cavity defining a part of the body; the width of the body Greater than its height; The inlet duct is used as the inlet of the pneumatic vacuum air flow with the granular material, and the inlet duct communicates with the inside of the chamber of the longitudinally elongated body; the outlet duct of the vacuum airflow is connected to the longitudinally elongated body The inside of the chamber; a dust and material fines filter is connected to the chamber and is positioned for the vacuum airflow to pass therethrough for removing the vacuum airflow from the vacuum airflow before it enters the vacuum airflow outlet duct The airflow collects dust and material fines; a blower device, connected to the body, is used to periodically guide the compressed air in a direction that faces the interior of the chamber and is opposite to the direction in which the vacuum airflow passes through the filter Air jet to the filter to clean the remaining dust and material fines of the filter; the bottom baffle, which extends horizontally along the lower end of the chamber, can move at an angle between the open position and the closed position. At the open position, the granular material in the chamber can freely flow down to the outside of the chamber when the pneumatic vacuum material is stopped. The baffle is sucked to the closed position by gravity, and the pneumatic The vacuum during the delivery of the vacuum material to the chamber is maintained in the closed position. For example, the receiver of item 2 of the scope of patent application further includes pins, wherein the bottom baffle plate is installed on the pins and can be pivotally moved around the pins. For example, the receiver of item 2 of the scope of patent application, wherein the two vertices of the convex triangular cross-section define the lateral ends of the body. Such as the receiver of item 2 of the scope of patent application, where the convex triangle The apex of the cross-section is located at the bottom of the body. For example, the receiver of claim 4, wherein the body has a part extending above the two vertices of the convex triangular cross-section defining the lateral end of the body.

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