JPS62206280A - Pressure device - Google Patents

Abstract

PURPOSE:To provide a pressure device having high efficiency of exhausting pressurized liquid by disposing a bag-like elastic film in a housing and fixing an end of the elastic film to one side of the housing while the other end is connected to an actuator rod through a plate. CONSTITUTION:A bag-like elastic film 5' is disposed in a housing 4. An end of the elastic film 5' is fixed to one side of the housing 4 while the other end is connected to as actuator 18 outside the housing 4 through a plate 16 and a rod 17. By this constitution can be changed the volume of a pressurized chamber 7' in the elastic film 5' through the plate 16 to send forcibly slurry 13 while pressurized liquid in a pressurizing chamber 8' can be securely exhausted by the pumping action of the blade 16 when the slurry 13 is sucked into the pressurized chamber 7'.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The disclosed technology belongs to the field of structural technology for a bag-like diaphragm type pump-feeding device.

<Summary of the gist> The invention of this application has a cylindrical housing with a lid near one side provided with an inlet/outlet for supplying a pressurized liquid such as slurry, and a lid near the other side provided with an oil supply/discharge port. A pressure chamber for pressurized liquid such as oil and a pressurized chamber for pressurized liquid such as slurry are provided in the housing, and the base end thereof is fixed to the housing. The invention relates to a pumping device defined by a membrane, and in particular, the base end of the bag-shaped elastic membrane is fixed to the base end of the housing or the peripheral edge of the lid body so that the outer band of the elastic membrane A pressurizing chamber is formed in the cylindrical part of the housing, and a ring-shaped gap is sufficiently formed in the cylindrical part of the housing, and the other end of the elastic membrane is connected to an actuator outside the housing via a rod. Alternatively, the invention relates to a pressure feeding device that is held between a plate and a sub-plate of a pressurized chamber.

<Prior Art> As is well known, various pressure feeding devices such as pumps have been developed and put into practical use, such as the so-called plunger type and diaphragm type. Among these, the diaphragm type has a large pumping capacity, so Although they have been widely used in a variety of industries, conventional devices have had the disadvantage of short operating strokes and low output relative to the diameter of the diaphragm.

<Problems to be solved by the invention> To deal with this, in many of the applicant's prior inventions, a pressure feeding device 1 as shown in FIG. 4 was developed and put into practical use. It's coming.

In the pressure feeding device 1, a sealed housing 4 is formed by the cylindrical drum 2 and the front and rear lids 3, 3', and a bag-shaped elastic membrane is formed inside the housing 4 even in its natural state. 5 is held between the base end of the cylindrical drum 2 and one of the lids 3', and a sleeve 6 that moves relative +1 between the lid 3' and the tip of the elastic membrane. The housing 4 is supported so as to maintain a predetermined shape by a support bar 6'.
A pressurized chamber 7 is formed between the pressurized chamber 7 and the pressurized chamber 8 is formed inside the pressurized chamber 8, and oil 9 of the pressurized liquid is supplied to the pressurized chamber 8 by the pump 10 of the pumping device to swell the pressurized chamber 8. Slurry 13 is introduced into the pressure chamber 7 from the slurry tank 11 via the pump 12.
The slurry 13 is sucked in and forced out, and the slurry 13 is pumped into the vast surface area of the elastic membrane 5 using human power, for example, to a filter press 14 for predetermined solid-liquid separation. .

<Problem to be solved by the invention> Then, the elasticity of the insertion shape II! Pumping device 1 having 5
In this case, an extremely large output was obtained, and as mentioned above,
Although it is possible to improve the operating efficiency of the filter press 14, etc., since the pressurizing chamber 7 is formed between the elastic membrane 5 and the housing 4, the slurry supplied and discharged to the pressurizing chamber 7 is In the case of sludge containing gravel, etc., the nuclide gravel etc. accumulates between the elastic membrane 5 and the inner surface of the housing 4 at the end of the pumping process, causing damage to the inner surface of the housing 4 or causing cracks in the elastic membrane 5. Moreover, since the pressurized chamber of the supply/discharge port 14 of the pressurized chamber 8 is small, it takes time to drain the liquid, and the work efficiency is poor. was there.

The purpose of the invention of this application is to solve the problems of the pumping device having a bag-shaped elastic membrane, which was developed in the applicant's earlier invention based on the above-mentioned prior art, and to The pressure chamber and pressurized chamber are arranged oppositely to take full advantage of the advantages of pressure-feeding, which has a bag-like elastic membrane and has a powerful output, resulting in good work efficiency, no need for maintenance, and improved durability. The purpose of this invention is to provide an excellent pumping device that is useful in the field of liquid processing technology in various industries.

<Means/effects for solving the problem> In accordance with the above-mentioned purpose, the structure of the invention of this application, which is summarized in the scope of the above-mentioned claims, is as follows: In order to solve the problem, a cylindrical drum portion and a The base of the drum is inside a housing sealed by a lid, or a pressurized chamber formed inside a bag-shaped elastic membrane whose ring-shaped end is fixed to the lid is covered with slurry or the like. In addition to supplying the pumped liquid, a plate whose other end surface is sandwiched between the other end surface of the elastic membrane, or the plate and the sub-plate 1- are opposed to each other via a rod by an actuator such as a hydraulic cylinder outside the other lid body. The elastic membrane is inflated to fill the pressurized chamber with a predetermined amount of pressurized liquid, and the actuator is operated to supply pressurized liquid such as oil to the pressurized chamber on the housing and elastic membrane side. The elastic membrane is compressed together with the plate to pressurize the liquid in the internal pressurized chamber and force the liquid to be fed from the supply/discharge port to the next stage filter press, etc., and after a predetermined stroke, the liquid is again pressurized from the supply/discharge port. In this process, the pressurized liquid in the pressurized chamber is smoothly drained from the drain port, which has a larger diameter than the liquid supply port, through the plate and rod due to the opposing actuators, and the next pressurization process can be started quickly. During this time, since the pressurized chamber is formed inside the elastic membrane, it will not be damaged by gravel, etc. fed into the housing, or by sandwiching gravel, etc. between the housing and the elastic membrane. Technical measures have been taken to prevent the elastic membrane from cracking.

<Embodiments - Configuration> Next, embodiments of the invention of this application will be described as follows based on FIGS. 1 to 3. Incidentally, the same parts as those in FIG. 4 will be explained using the same reference numerals.

In the embodiment shown in FIG. 1, reference numeral 1' denotes a pressure feeding device which constitutes the gist of the invention of this application, and in this embodiment, slurry-like sludge containing fine gravel, etc. is fed under pressure to a filter press 14 under high pressure. A certain type of housing 4 is formed by the cylindrical drum 2 and the front and rear lids 3,3'.

Inside the housing 4, there is a rubber elastic membrane 5' that bulges out like a bag even in its natural state, and its base ring-shaped end is connected to the base end of the lid 3 via a ring-shaped retainer 30. A pressurized chamber 8' is provided on the outside and a pressurized chamber 7 is provided on the inside, with a predetermined gap 28 having a ring-shaped cross section between the housing 4 and the drum. ', and as detailed in the cross section of Figure 2,
Similarly, a metal plate 16 and a sub-plate 19 whose periphery is curved toward the pressurized chamber 7' are sandwiched in a substantially planar shape by bolts 22 and nuts 23 with a ring-shaped set gap between them and the drum 2. A ring-shaped protrusion 31 is formed in a part toward the pressurized chamber 7' and is fitted into a ring-shaped recess @32 formed corresponding to the sub-plate 15. , and the plate 16 is the seal 2 of the lid 3'.
The rod 17 inserted through the housing 4 is connected to a hydraulic cylinder 18 as an actuator, and the movement of the hydraulic cylinder 18 causes the elastic membrane 5' to form a set gap with the drum 2 in the drum 2 of the housing 4. It is designed to scale.

Incidentally, the plate 16 and the sub-plate 19 are tightened to the rod 11 by a lock nut 20 and a cap nut 21 with an elastic membrane 5' in between.

The pressurized chamber 7' is connected to the slurry tank 11 by an on-off valve 24, a pressure pump 12, and a filter press 14 by a three-way valve 29 connected to a supply/discharge port 15 formed in the lid 3. Connected slurry 13
is supplied to the pressurized chamber 7' and discharged by applying pressure.

On the other hand, in the pressurizing chamber 8', the liquid supply port 1 has a relatively small diameter.
A drain port 14' having a relatively large diameter with respect to the opening/closing valve 24
．． 24 and an electromagnetic switching valve 25, a pump 10 is also provided to supply and discharge pressurized liquid oil 9 from a tank 26.

<Embodiment - Effect> In the above configuration, the actuator 18 is extended at full stroke and the pressurizing chamber 8' is filled with the oil 9 from the tank 26 by the electromagnetic valve 25 and the pressure pump 10, that is, When the elasticity 1lSi5' is in the minimum contracted state, the slurry 13 in the internal pressurized chamber 7' flows through the three-way valve 29.
When the slurry 13 is fed under pressure from the slurry tank 11 to the pressurized chamber 7', the solenoid valve 25 is switched and the actuator 18 is moved backward by a full stroke. The plate 16 and the sub-plate 15 move back, the elastic +15' expands, the internal pressure of the pressurizing chamber 8' is increased, and the oil 9 flows from the large diameter drain port 14' to the opening/closing valve 24.
, returns to the tank 26 via the electromagnetic valve 25, and the elastic membrane 5' bulges accordingly, forming a negative pressure in the pressurized chamber 1', and the plate 12 operates, causing the three-way valve 29 The slurry from the slurry tank 11 flows into the pressurized chamber 7' from the supply/discharge port 15.
3 is smoothly supplied in a push-pull state, and therefore, the elastic membrane 5' is sufficiently expanded during the full stroke and reaches the end of the stroke.

Therefore, by switching the electromagnetic valve 25 and switching the three-way valve 29, the pressure pump 10 and the actuator 18
When the pressurizing chamber 8' is operated, the oil 9 from the tank 26 is supplied from the liquid supply port 14' by the pressure pump 10, and the plate 16 assists and applies a pressing force to the pressurized chamber 7'. In addition to applying pressure to the slurry 13 inside, a set gap 28 is formed between the elastic membrane 5' and the drum 2 of the housing 4 in the pressurizing chamber 8'.
The pressing force of the oil 9 is applied to the elastic membrane 5' from all sides other than the lid 3, and an extremely large pressure is applied, and the slurry 13 is given a kind of squeezing effect and flows through the supply and discharge ports 15,
It is fed under pressure to the filter press 14 through the three-way valve 29.

By repeating the above process, the slurry 13 from the slurry tank 11 is sucked and discharged by the pumping device 1' and is fed to the filter press 14 under high pressure.

Moreover, in the invention of this application, it is a housing.

An elastic membrane 5 is placed inside the drum 2 of No. 4 through a predetermined gap 28.
' is formed by defining a pressurized chamber 7', so even if gravel or the like is mixed in the slurry 13 being supplied and discharged, there will be no leakage between the inner surface of the drum 2 of the housing 4 and the elastic membrane 5'. This prevents damage to the inner surface of the drum 2 and cracks in the elastic membrane 5' due to sliding of gravel between the inner circumferential surface of the drum 2 and the elastic membrane 5'.

Further, the curved radius formed around the sub-plate 19 and the retainer 30 prevents fatigue, cracks, etc. due to wear of the corresponding portions during expansion and contraction of the elastic membrane 5'.

Next, the embodiment shown in FIG. 3 has a housing 4 of an elastic membrane 5'.
The manner in which the elastic membrane 5' is attached is different from the above-described embodiment in that the ring-shaped end of its base is attached to the end of the drum 2 in the housing via a retainer 30', increasing the surface area of the elastic membrane 5' to This is an embodiment in which the pumping pressure for 13 is increased, and the operation and effect achieved are substantially the same as those of the above-mentioned embodiments.

It goes without saying that the embodiments of the invention of this application are not limited to the above-mentioned embodiments. For example, a coil spring may be loosely inserted outside the elastic membrane to prevent deformation in its natural state, or the elastic membrane may be prevented from deforming in its natural state. Various methods have been proposed, such as providing a plurality of sleeves and support bars along the outer axial direction and making them expandable and retractable to maintain a predetermined gap between the housing and the drum and to prevent deformation. Adoptable.

<Effects of the Invention> As described above, according to the invention of this application, basically, the rear end of the elastic membrane made of rubber or the like that defines the pressurized chamber and the pressurized chamber inside the housing is connected to the lid body with its tip end surface. By being fixed to the plate and making it expandable and contractible, it is possible to supply and discharge a pressurized liquid such as slurry to the pressurized chamber inside the elastic membrane, so if gravel etc. is mixed in the slurry, etc. This prevents damage to the inner surface of the housing, or the occurrence of cracks in the elastic membrane due to gravel, etc. getting caught between the elastic membrane and the housing.
It has the excellent effect of being able to always maintain the pumping function as designed and improving durability.

In addition, when supplying and discharging pressurized liquid such as oil to the pressurized chamber formed between the elastic membrane and the housing, a plate integrally provided with the elastic membrane is installed on the pressurized chamber side of the housing. By connecting to an actuator such as an external hydraulic cylinder via a rod, the pressurized liquid can be rapidly discharged, and the excellent effect of improving the working efficiency of the recycle device is achieved.

Further, by doing so, the diameter of the liquid drain port can be made larger than the diameter of the liquid supply port, and the pressurized liquid can be discharged even more smoothly.

In addition, by forming a pressurized chamber for storing a pressurized liquid such as slurry inside the elastic membrane, by providing a coil spring, multiple sleeves, and support bars on the outside of the elastic membrane, the elastic membrane can be expanded and contracted. The excellent effect of maintaining shape retention during contraction is achieved.

[Brief explanation of drawings]

1 to 3 are detailed explanatory diagrams of the invention of this application, in which FIG. 1 is an overall schematic vertical sectional view of one embodiment, FIG. 2 is an enlarged sectional view of a portion where the plate and the elastic membrane are joined, The figure is an overall schematic vertical sectional view of another embodiment, and FIG. 4 is a schematic sectional view of a pumping device based on the prior art.

Claims (8)

[Claims] (1) A bag-shaped housing that defines a pressurized chamber for pressurized liquid and a pressurized chamber for pressurized liquid in a housing that has a pressurized liquid supply/discharge port on one side and a pressurized liquid supply/discharge port on the other side. In a pumping device in which an elastic membrane is interposed, the proximal end of the elastic membrane is fixed to one side of the housing, the other side is fixed to a plate on the pressure chamber side having a ring-shaped gap with the housing, and A pumping device characterized in that the plate is connected to an actuator outside the housing via a rod. (2) The pressure feeding device according to claim 1, wherein the pressure feeding liquid supply/discharge port of the pressurizing chamber is comprised of a small diameter liquid supply port and a roughly liquid drain port. (3) The pressure feeding device according to claim 1, wherein the base end of the elastic membrane is fixed to the lid. (4) The pressure feeding device according to claim 1, wherein the base end of the pressurizing chamber is fixed to the base end of the cylindrical body. (5) A bag-like shape defining a pressurized chamber for pressurized liquid and a pressurized chamber for pressurized liquid in a housing having a pressurized liquid supply/discharge port on one side and a pressurized liquid supply/discharge port on the other side. In a pumping device in which an elastic membrane is interposed, the proximal end of the elastic membrane is fixed to one side of the housing, and the other side is connected to the housing and a plate on the pressurized chamber side having a ring-shaped gap and a plate on the pressurized chamber side. 1. A pumping device, characterized in that it is clamped and fixed to a sub-plate, and the plate is connected to an actuator outside the housing via a rod. (6) The pressure feeding device according to claim 5, wherein the outer edge of the sub-plate is curved toward the pressurized chamber. (7) Claim 5, characterized in that the elastic membrane has a ring-shaped convex portion formed between the plate and the sub-plate, and a groove formed in the corresponding sub-plate.
Pressure feeding device as described in section. (8) The pumping device according to claim 5, wherein the elastic membrane has a ring-shaped convex portion formed between the plate and the sub-plate, and a concave groove formed in the corresponding plate. .