JP4277594B2 - Muddy water concentration method and muddy water concentration pump device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pump technology created so that purified water can be filtered and extracted from mud water and the mud water can be concentrated.
[0002]
[Prior art]
There are a great many types of civil engineering works, and there are many cases in which "muddy water treatment" must be performed.
There are various sources of muddy water, and muddy water may spring out, may have been stored naturally, or may be generated as industrial waste.
For about 20 years after the war, it was usual to discharge muddy water from the civil engineering work site into the river, but the Water Pollution Control Law was enacted on December 25, 1971, and the same on June 12, 1946. Since the enactment of the law, the release of muddy water has been severely regulated,
Since then, the law has been revised repeatedly until 2000, resulting in increasingly strict regulations.
[0003]
[Problems to be solved by the invention]
The methods for treating muddy water to clear the Water Pollution Control Law can be broadly classified as follows. (B) A method of filtering with a filter. Is the mainstream.
In addition, (c) there is a method of storing mud water in a calm pond and waiting for mud particles to settle, but it is not practical because it takes a long time.
[0004]
The drug addition method of item (a) has a high drug cost. In addition, as a filter method of the item B, for example, “filter press dewatering filter” disclosed in Japanese Patent Application Laid-Open No. 11-15611 is known, but the working mode is “pressure filtration” and “disassembly / cleaning / assembly”. ”, The work efficiency is low, and the processing cost is high.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a technique for concentrating muddy water with low cost and high efficiency on the premise that it is used in combination with the above-mentioned filter system.
If mud is concentrated, it can be naturally expected that the muddy water filtration work in the subsequent process will be greatly reduced.
[0005]
[Means for Solving the Problems]
The present inventor has made diligent efforts regarding the pressurization and supply of muddy water over the past several years, and has created a technique capable of pumping muddy water with high efficiency and low cost. Furthermore, it was also confirmed that the durability and reliability of the device according to this technology is practically sufficient.
Therefore, the present inventor has further developed the mud water pressurization technique described above and made it possible to concentrate mud water, thus completing the present invention.
Concentration of mud water according to the present invention belongs to the broad category of filtration essentially, but for the convenience of distinguishing between filtration in the prior art and filtration in the present invention,
The operation of dehydrating muddy water into a plastic body is called a filter press,
If fluidity is not lost as a result of dewatering from the muddy water, it is called concentration.
[0006]
FIG. 2 is a view for explaining a plunger pump for pressurizing and feeding muddy water, which is a prior art related to the creation of the present inventor, and (A) is a schematic cross-sectional view, (B). FIG. 3 is an external view of a piston extracted and drawn.
A piston 2 is formed by housing the piston 2 in the cylinder 1.
The definition of the plunger pump is not constant among various technical terminology dictionaries. However, in the present invention, the plunger pump is the broadest meaning of a generic term for a piston type pump and a plunger type pump. It is not limited to the rod shape.
[0007]
The piston 2 of this example is provided with a piston rod 2a on one side, and the screw and the rod 2a protrude through the cylinder bottom of the cylinder 1. The piston 2 is driven to reciprocate in the vertical direction in the figure via this piston rod.
The cylinder head of the cylinder 1 is provided with a suction port 1a and a discharge port 1b.
The piston 2 is provided with a ring groove, and a V packing 2b and a piston ring 2c are fitted into each other.
[0008]
Referring to FIG. 2, the matter described in paragraph 0007 is not applicable to muddy water pumping.
A characteristic configuration of the prior art (FIG. 2) related to the creation of the present inventor is that a wear ring 2 d is provided on the piston 2.
Prior to the provision of the wear ring 2d, the muddy water pump was prematurely worn due to the mud particles being caught in the sliding surface.
If the sliding surface is worn, leaks occur and pump efficiency decreases.
In the prior art (before wearing the wear ring), the existing concept that “the muddy water pump wears quickly” became common sense, and a large capacity pump several times the required pump capacity was installed. “Decreased state” was the regular performance.
[0009]
By wearing the wear ring 2d, the progress of wear of the sliding portion was remarkably reduced.
The progress of wear varies depending on the working conditions, particularly the type, particle size, and content of the mud particles. The period during which the volumetric efficiency of the plunger pump equipped with the wear ring was reduced to 80% of the rated value was about 1000 hours.
The significance of 1000 hours in civil engineering foundation work is critical. That is, because the concept that “the pump's useful life has been exhausted, which hinders the overall construction”, the standard of durability required for the pump is 1000 hours.
[0010]
Civil engineering works are diverse, and the construction period is long and short.
However, the foundation work is positioned first in the series of processes, and the foundation work cannot proceed to the next process unless the foundation work progresses to some extent. Therefore (although there is no exception), the construction period of foundation work in one work area is less than half a year.
And it is usually the first half of the foundation work period that is pursued by muddy water treatment.
In summary of such circumstances, if the durability of the mud pump is 1000 hours, there is no possibility that the maintenance stop of the mud pump will hinder the entire construction work.
[0011]
For example, in the equipment pool of a huge construction project, the necessary mud pumps are prepared and sent out in accordance with a number of construction schedules. On the other hand, the muddy water pump that has been used and returned is maintained and stocked for the next delivery.
In this case, the reliability required for the muddy water pump is half a year (pump operating time of about 800 hours) from when it is sent out until it is returned. Therefore, if it works for 1000 hours with a volumetric efficiency of 80%, it can be said that the durability and reliability are practically sufficient.
For medium and small works, a machine leasing company plays the role of the equipment pool. In this case, the durability and reliability required for the muddy water pump are the same as described above (1000 hours).
[0012]
In the present invention, the wear ring refers to a fibrous flexible thick cloth-like ring-shaped member.
In the example shown in FIG. 2, a cloth-containing synthetic resin is used. A microporous material is more desirable.
It is an experimental fact that the durability and reliability of the conventional mud pump have been dramatically improved by the additional mounting of the wear ring 2d.
The mechanism of durability and reliability improvement has not been clarified theoretically,
Fine mud particles (clay or colloidal region) trapped on the surface of the wear ring act as a lubricant, and the circulating fine particles are applied to the inner peripheral surface of the cylinder 1 as the piston reciprocates. It is estimated that
However, since the “mud plunger pump with a wear ring” is known as of today, the “mud plunger pump with a wear ring” has no novelty. Therefore, the present invention does not require only the “plunger pump with the wear ring” as an essential component.
[0013]
In the prior art example shown in FIG. 2, muddy water is 30 kg / cm. ² To 50 liters per stroke.
If mud water can be fed in this way, it can be easily conceived that mud particles can be removed by filtration by circulating the mud water through the filter device.
However, according to such means, since the filter must be periodically disassembled and cleaned, a great amount of labor is required. In addition, since the filtering operation is performed intermittently, the work efficiency is low.
The basic principle of the present invention is to perform “concentration” as a preliminary operation of the filter press without immediately filtering (filter press) the muddy water.
[0014]
Based on the above-mentioned principle, the configuration of the “muddy water concentration method” according to the invention of claim 1 (see FIG. 1) is provided in a cylinder (3) having water permeability and rigidity. Wearing wear ring (2d) The plunger (2) is housed to form a plunger pump,
By surrounding the cylinder (3) with an outer cylinder (4) to form a water purification chamber (5) and reciprocating the piston,
I. The muddy water to be treated is sucked into the cylinder head chamber of the plunger pump,
B. Pressurize the sucked muddy water in the cylinder head chamber,
C. While filtering the purified water component contained in the pressurized muddy water by the water permeability of the cylinder (3) and flowing it into the purified water chamber (5),
C. The filtered mud particle component remains in the cylinder (3),
D. The sludge-like mud particles that have been filtered and adhered to the inner wall surface of the cylinder (3) are scraped off by reciprocating sliding of the piston (2),
E. The mud water that has become thicker due to mixing of the mud particles scraped off is pressurized by the reciprocating drive of the piston and is intermittently discharged from the cylinder head chamber.
By repeating the above work cycle, the muddy water is concentrated while collecting purified water from the muddy water to be treated.
[0015]
According to the method of the invention of claim 1 described above, the mud water to be treated can be concentrated with high efficiency while continuously circulating and flowing.
Purified water, which is a component of muddy water, passes through the cylinder wall and is separated and extracted into the water purification chamber.
Solid particles that are components of muddy water remain inside the cylinder wall. However, these solid particles (mud particles) are not taken out as a plastic material, but are spread thinly on the inner peripheral surface of the cylinder by the piston, functioning as a lubricant, and excess solid components are scraped off by the piston. It is diluted by mixing with the mud water (it is diluted when paying attention to the mud particles, and it is concentrated when looking at the whole mud water).
The concentrated mud is finally finished by a filter press,
I. Compared with the case where it is not concentrated, the filter press process becomes much easier,
B. Condensed mud water is significantly easier to transport than unconcentrated raw water (mud water).
Moreover, according to the method of the present invention, the plunger pump, which is a means for condensing mud water, also has a function of pumping concentrated mud water, so that it can be carried out without increasing the equipment for transporting mud water. .
Actually, the capacity of the filter press can be greatly reduced and the required muddy water treatment capacity can be maintained by slightly modifying the muddy water supply pump in the conventional muddy water treatment facility.
[0016]
In addition to the constituent features of the inventive method of the first aspect, the configuration of the inventive method according to the second aspect is such that a wear ring (2d) is attached to the piston (2) and the water purification chamber (5) is inserted. The purified water that has flowed in is vacuum-sucked out of the purified water chamber, used as working water or miscellaneous water, or used as source water for clean water.
[0017]
According to the method of the invention of claim 2 described above, the “muddy water that is pressurized in the cylinder head chamber and leaks between the cylinder and the piston and flows into the cylinder bottom chamber” is concentrated by the permeable cylinder. It can be moved to the water purification room, merged with “purified water that did not leak”, and extracted as “purified water”.
Since the extracted purified water is visually perceived as fresh water, it can be used effectively as working water or miscellaneous water. Moreover, if further processing is added, it can be used as clean water.
[0018]
In addition to the constituent features of the inventive method of the first aspect, the configuration of the inventive method according to the third aspect includes a wear ring (2d) attached to the piston (2), and a cylinder bottom chamber of the plunger pump is checked. Pressure air is fed through the valve (19),
When the piston (2) moves away from the cylinder head and the pressure in the cylinder head chamber decreases, a part of the pressurized air flows into the cylinder head chamber via the water purification chamber (5), and the cylinder The water-permeable cylinder (3) forming the head chamber is back-washed to remove the adhering mud particles.
[0019]
According to the method of the invention of claim 3 described above, clogging caused by the water-permeable cylinder acting as a filter can be automatically backwashed and cleaned, further improving reliability and maintenance. Is easy.
That is, when pressurized air is not supplied to the cylinder bottom chamber, the cylinder head chamber and the cylinder bottom chamber alternately become positive pressure and negative pressure as the piston reciprocates. When pressurized air is supplied to the cylinder bottom chamber, the cylinder bottom chamber is always at a positive pressure and almost filled with air.
A part of the pressure air filled in the cylinder bottom chamber permeates the water permeable cylinder and flows into the water purification chamber, and a part of the pressure air permeates the water permeable cylinder and flows into the cylinder head chamber. Thus, the flow direction of the air flowing into the cylinder head chamber is opposite to the “flow direction of the purified water that is pressurized by the plunger pump and flows into the water purification chamber”.
In this way, the mud particles clogging the permeable cylinder are backwashed. This cleaning action is performed automatically where the user cannot see it.
In addition, when the purified water that has flowed into the water purification chamber is extracted upward from the water purification chamber, part of the pressure air that has flowed into the water purification chamber becomes bubbles and rises in the water purification flow path, and acts as a bubble pump. , Extraction of purified water is promoted.
[0020]
The configuration of the invention method according to claim 4 is the above-described plunger pump (see FIG. 3) in addition to the constituent features of the inventions of claims 1 to 3. The Installed on land,
The muddy water in the muddy pond (11) is sucked into the cylinder head chamber and concentrated.
The concentrated mud is stored in the concentrated mud tank (12),
The concentrated mud in the concentration tank (12) , Return line (14) with valve means (22) ) Therefore, the concentration action is further advanced by re-inhalation into the cylinder head chamber for circulation.
[0021]
According to the method of the invention of claim 4 described above, the muddy water in the muddy pond is pumped up and concentrated by the plunger pump, the concentrated muddy water is stored in the concentrated muddy water tank, and supplied to the filter press as the next step. The amount of work of the filter press can be reduced.
In addition, it is possible to further reduce the volume of the concentrated mud water by increasing the degree of concentration by circulating the mud water between the mud water concentration tank and the plunger pump.
The increase in the degree of concentration can be arbitrarily adjusted within a range where the concentrated mud does not lose fluidity, and the burden on the filter press is greatly reduced.
Since the above-mentioned filter press work is expensive, the economic effect of reducing the work amount of the filter press is great.
[0022]
The configuration of the inventive method according to claim 5 is the same as that of the first to third aspects of the invention (see FIG. 4). The Installed in or near the muddy water of the muddy pond (11)
The muddy water in the muddy pond is sucked into the cylinder head chamber of the plunger pump and pressurized, and the purified water components are filtered and concentrated.
The concentrated muddy water is circulated and circulated in the muddy pond (11).
By repeating the above operation repeatedly, the whole mud in the mud pond is gradually concentrated while collecting purified water from the mud pond.
[0023]
According to the method of the invention of claim 5 described above, the plunger pump is installed in the muddy pond (or a muddy water storage tank equivalent thereto) or suspended and operated, thereby the plunger pump. A new practical effect, which was not expected in the prior art, can be obtained by extracting the purified water from the water purification chamber attached to the water and gradually concentrating the muddy water in the muddy pond.
When the muddy water stored in the muddy pond is continuously concentrated by the inventive method of claim 5, the amount of muddy water in the muddy pond decreases. This naturally reduces the amount of post-filter press work, but in addition, the following invisible effects can be obtained.
In other words, even if the amount of generated muddy water increases unexpectedly, the muddy water in the muddy pond does not overflow. This is not just a matter of work volume and work cost, but has an important significance of preventing construction disasters.
Considering this as a whole construction plan, the required capacity of the filter press is not only reduced by applying the present claim 5 to concentrate the muddy water, but also the water storage capacity of the muddy pond is sufficient.
[0024]
The configuration of the inventive device according to claim 6 is as shown in FIG. And rigidity A piston (2) fitted with a wear ring (2d) is housed in a cylinder (3) made of a material having a plunger pump,
A suction valve (3a) and a discharge valve (3d) are provided in the cylinder head of the plunger pump,
An outer cylinder (4) is fitted on the water permeable cylinder (3), and a water purification chamber (5) is formed between them.
[0025]
When the mud concentrating pump apparatus according to the invention of claim 6 described above is applied, the mud can be concentrated by circulating and flowing.
In the plunger pump according to the first aspect of the present invention, since the cylinder is water permeable, when the muddy water sucked into the cylinder head chamber is pressurized by the piston, the purified water which is a component of the muddy water passes through the cylinder wall. It flows into the water purification chamber and is extracted, and solid components (mud particles) are separated by filtration and remain in the cylinder head chamber. For this reason, the muddy water in the cylinder head chamber has an increased solid component content (that is, is concentrated).
The solid component filtered off as described above adheres to the inner peripheral surface of the water permeable cylinder, but is immediately spread by wear ring and the excess is scraped off.
The spread solid component (mud fine particles) acts as a lubricant and is diluted with a large amount of muddy water scraped off. On the other hand, the concentration of muddy water in which solid components are dissolved increases. That is, it is concentrated.
Concentration of muddy water reduces the volume and reduces the amount of work of the filter press, which is the next process. Thereby, the outstanding practical effect that the total cost of muddy water treatment is reduced significantly is produced.
[0026]
The configuration of the inventive apparatus according to claim 7 is the same as that of the muddy water concentration pump according to the invention of claim 6 (see FIG. 3), wherein the water purification chamber (5) is a steam separator (15). It is characterized by being connected to the vacuum pump (16) via.
[0027]
According to the invention device of the seventh aspect described above, the purified water flowing into the water purification chamber and separated from the muddy water can be extracted and used.
That is, the cylinder head chamber of the plunger pump (requirement of claim 6) becomes a positive pressure or a negative pressure with the reciprocation of the piston, but by vacuum suction of the water purification chamber, The purified water is constantly extracted without flowing back into the cylinder head chamber.
Further, since the extracted purified water flows into the steam separator, there is no possibility that the purified water flows into the vacuum pump and damages it.
[0028]
In addition to the constituent features of the inventive device of the sixth aspect (see also FIGS. 1 and 4), the cylinder bottom chamber of the plunger pump includes a check valve (19). It is connected to a pressure air source (17) through.
[0029]
According to the invention apparatus of the eighth aspect described above, the water-permeable cylinder is always cleaned by receiving the backwashing action, so that it does not become clogged.
That is, if the configuration is not such that pressurized air is supplied by applying this claim, the cylinder bottom chamber of the plunger pump becomes positive or negative with the reciprocation of the piston, and this is repeated. .
However, when the cylinder bottom chamber is connected to the pressure air source by applying the present invention, a positive pressure is always maintained in the cylinder bottom chamber regardless of the reciprocating motion of the piston.
The positive pressure air in the piston bottom chamber prevents “muddy water from leaking from the cylinder head chamber to the cylinder bottom chamber”.
Further, the pressure air in the cylinder bottom chamber passes through the cylinder wall and enters the water purification chamber, and again passes through the cylinder wall and flows into the cylinder head chamber.
The above “flow into the cylinder head chamber” is in the opposite direction compared to “flow when the purified water component in the muddy water is pushed by the piston and moves into the purified water chamber”. As a result, the cylinder wall of the water permeable cylinder is backwashed with pressurized air, and the cylinder wall is prevented from being clogged.
[0030]
The configuration of the invention device according to claim 9 is, in addition to the configuration requirements of the invention device of claim 6, (see FIG. 3), the plunger pump is configured as a land-installed device,
A concentrated mud tank (12) to which the concentrated mud flowing out of the discharge valve (3b) is guided;
A return line (14) for guiding the concentrated muddy water in the concentrated muddy water tank (12) to the suction valve (3a), and an insertion connection to the return line (14). Tightening And a throttle valve (22) having a cutting function.
[0031]
According to the invention apparatus of the ninth aspect described above, the muddy water concentrated by the plunger pump is stored in the concentrated muddy water tank.
Further, when the throttle valve is opened, the concentrated muddy water in the concentrated muddy water tank is again sucked into the cylinder head chamber of the plunger pump, and is further concentrated and sent to the concentrated muddy water tank.
By repeating the above-mentioned operation continuously, the muddy water circulates between the concentrated muddy water pump and the plunger pump, and the concentration proceeds.
The circulating flow can be adjusted by operating the throttle valve, and by closing the throttle valve, the circulation can be stopped and the one-way operation can be performed.
If the degree of enrichment is increased by increasing the circulation flow rate, the capacity of the concentrated mud tank is sufficient, and it becomes easy to configure it as a portable type.
[0032]
In addition to the constituent features of the inventions of the sixth to eighth aspects, the configuration of the invention device according to the tenth aspect (see FIG. 4) is that the plunger pump is configured as a submersible pump, and the discharge valve (3b ) Outlet side is open to the muddy water in the muddy pond (11),
The water purification chamber (5) is provided with a water purification pipe (20) for feeding the purified water (21) filtered and extracted to the land or on the water surface.
[0033]
According to the apparatus of the invention of claim 10 described above, the purified water is sent from the plunger pump installed in the muddy water. Can also be used.
Since the purified water component is separated and extracted as described above, the muddy water in the muddy pond is concentrated and the volume is reduced.
When the volume of muddy water is reduced, the amount of work of the filter press, which is the next process, is reduced. Since this filter press work is intermittently operated and requires a lot of labor, the reduction of this work greatly contributes to the cost reduction of the entire muddy water treatment.
In addition, since the mud is concentrated and the volume is reduced, there is no possibility that the mud will overflow from the mud pond even if bad conditions such as rain, unscheduled water discharge and filter press failure overlap, which is also effective for disaster prevention. .
[0034]
The configuration of the invention device according to claim 11 is the same as that of the invention device according to claims 6 to 10 (see FIGS. 3 and 4), with respect to the cylinder bottom side of the plunger pump. A hydraulic cylinder (6) is installed concentrically,
To the other end of the piston rod (2a) of the plunger pump , Hydraulic piston for the hydraulic cylinder (7 )But Is installed,
The hydraulic cylinder is configured to reciprocately drive the piston (2) of the plunger pump by sharing the piston rod (2a).
[0035]
According to the invention device of the eleventh aspect described above, the piston of the plunger pump can be driven to reciprocate by hydraulic pressure.
Since the piston is driven without using a crank mechanism, no side pressure is applied to the piston, which is effective in improving durability.
The drive system according to the invention of claim 11 is particularly suitable when the plunger pump is used as a submersible pump, and it is not necessary to generate a power transmission line near the muddy water in the muddy pond. There is no safety.
[0036]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a diagram showing a main part in one embodiment of the present invention, and is a diagram in which a piping symbol diagram is added to a sectional view of a plunger pump in which a piston is housed in a cylinder having water permeability and rigidity.
In a ring groove provided around the piston 2, a V packing 2b, a piston ring 2c, and a wear ring 2d are fitted.
The wear ring 2d is a constituent member described above with reference to FIG. 2 described above, and is a fibrous flexible annular member.
[0037]
The piston 2 is housed in a water permeable cylinder 3 to form a plunger pump. 2a is a piston rod.
In this example, the water permeable cylinder 3 was constituted by Fine Wedge (trade name) manufactured by Toyo Screen Industry Co., Ltd.
In this member, stainless steel wires having a triangular cross section are arranged with a gap size of 10 μm. As a rough guide, the fine gaps allow the colloid to pass but not the clay particles.
[0038]
In carrying out the present invention, the constituent member of the water permeable cylinder is not limited to the fine wedge, but may be any member having a micron unit hole and appropriate rigidity. For example, it may be a stainless steel cylinder having innumerable through holes with a diameter of micron order, or may be a porous sintered alloy or ceramic.
Furthermore, it may not be a single material, but may be a flexible sheet material reinforced with a rigid member,
In short, what is necessary is just to have the water permeability which can separate the solid component (mud particle) in muddy water, and the rigidity which can endure as a cylinder for pumps.
[0039]
The periphery of the water permeable cylinder 3 is surrounded by an outer cylinder 4, and a water purification chamber 5 is formed between the two. Although FIG. 1 is schematically depicted for convenience of understanding the structure, the water purification chamber 5 does not require a large volume. The actual outer cylinder 4 in the present embodiment is a steel tubular member having an inner periphery that fits to the outer periphery of the water-permeable cylinder 3 to the extent of “play fit”, and has a water guide groove on the inner peripheral surface thereof. Is carved.
The water purification chamber 5 is connected to a vacuum pump 16 and is configured to be vacuum suctioned Vc.
[0040]
A cylinder head chamber is shown with the symbol Ch, and Cb is a cylinder bottom chamber. The terms “cylinder head” and “cylinder bottom” have not been established in various technical terminology dictionaries, and are often misused as slang terms in the technical field.
However, since these terms specify essential constituent elements of the present invention, their definitions are defined as follows.
The reason why the term “cylinder head” was confused was originally called as a member constituting the combustion chamber of the internal combustion engine, and at this time it was read and placed on the cylinder block as a letter. The word is diverted to hydraulic and hydraulic cylinders, and it is thought that the name was uncertain because it was not necessarily placed on the main body like a “head”. Actually, the part denoted by Ch in FIG. 1 does not feel like a head but wants to be called a bottom.
Also, in an internal combustion engine, one piston rod type and two piston rod types are used in hydraulic, hydraulic and pneumatic devices, compared to one connecting rod (connecting rod) attached to one piston. Yes, the concept of cylinder head and cylinder bottom is not valid in both piston rod cylinders.
[0041]
Therefore, in the present invention, for convenience of explanation, an embodiment of a single rod type cylinder structure is illustrated, and a space functioning as a pressurizing chamber is called a cylinder head chamber, and a muddy water intake valve (inlet) is provided in the cylinder head chamber. Provide a discharge valve (outlet).
There can be various modifications using cylinders other than single rod type,
The pressure chamber where the muddy water is pressurized is the cylinder head chamber,
A space facing the cylinder head chamber through the piston is defined as a cylinder bottom chamber.
In the double rod type cylinder, the pressure chambers change alternately with the reciprocation of the piston. In such a case, the cylinder head chamber and the cylinder bottom chamber alternate with each other, but the pressure chamber side is the cylinder head chamber and the opposite side is the cylinder bottom chamber.
[0042]
The cylinder head chamber Ch is provided with a suction valve 3a and a discharge valve 3b, and a throttle valve 13 is inserted and connected to a pipe line connected to the discharge valve 3b.
A pressure air source 17 is connected to the cylinder bottom chamber Cb via a check valve 19 so that pressurized air Ca can be supplied.
The piston rod 2a is reciprocated in the vertical direction in the figure by driving means (not shown).
As the driving means, known driving devices can be appropriately selected and used. One example of a suitable driving means will be described later with reference to FIGS.
[0043]
When the piston 2 rises, the inside of the cylinder head chamber Ch becomes negative pressure, and the muddy water Mw is sucked.
Next, when the piston 2 descends, the suction valve 3a is closed, and the cylinder head chamber Ch attempts to flow out by pushing the discharge valve 3b open. However, since the flow rate is limited by the throttle valve 13, the pressure is increased. In this example, the “relation between the descending speed of the piston 2 and the flow resistance of the throttle valve 13” is adjusted according to the properties of the muddy water so as to be about 30 atmospheres (relative pressure).
The pressure of the pressurized air Ca can be set as appropriate. When this pressure is made substantially equal to the pressure in the cylinder head chamber Ch, the pressurized muddy water is prevented from leaking along the outer periphery of the piston 2 to the cylinder bottom chamber Cb.
[0044]
When the muddy water in the cylinder head chamber Ch is pressurized, the purified water component constituting the muddy water passes through the cylindrical wall of the water permeable cylinder 3 and flows into the purified water chamber 5 as indicated by an arrow a.
The mud particles (solid particles), which are the components of the muddy water, are larger than the diameter of the permeation flow path of the water permeable cylinder 3 and cannot pass therethrough, and accumulate on the inner peripheral surface of the water permeable cylinder 3.
The accumulated mud particles are scraped off by the piston 2 at the next moment.
Part of the mud particles is adsorbed near the surface of the wear ring made of a fibrous material and acts as a lubricant to prevent wear.
[0045]
The scraped mud particles are mixed with a large amount of mud and diluted. Looking at this phenomenon for muddy water, the muddy water is concentrated by separating and purifying the purified water components.
The concentrated mud Cm is sent through the discharge valve 3b and the throttle valve 13.
In the device of the present invention (FIG. 1), the cylinder wall of the plunger pump also serves as a filter as described above.
In the prior art, the pump (that is, the pressurizing means) and the filter (filtering means) are configured as separate bodies. Therefore, the filter must be periodically disassembled and the “solid component separated by filtration must be discharged. , Spent a lot of effort and time.
On the other hand, in the apparatus of the present invention, the solid component (mud particles) separated by filtration is scraped off by the piston and mixed with the raw water (mud water), so that the filter press is not performed and the mud water is concentrated exclusively. The Therefore, it is not necessary to disassemble and maintain the filter means, and it operates continuously and automatically.
[0046]
Although the configuration of supplying the pressure air Ca to the cylinder bottom chamber Cb is not absolutely essential, when the pressure air Ca is supplied, backwashing is performed as follows.
As the piston 2 reciprocates, the cylinder head chamber Ch becomes positive pressure or negative pressure.
When a negative pressure is reached, part of the pressurized air in the cylinder bottom chamber Cb flows into the water purification chamber 5 as indicated by an arrow b, and further flows into the cylinder head chamber Ch as indicated by an arrow c.
This inflow air (arrow c) flows in the direction opposite to the previously described permeation direction of purified water (arrow a).
[0047]
When the muddy water flows in the direction of arrow a, the solid particles accumulate on the inner peripheral surface of the water permeable cylinder 3. Almost all of this deposit is immediately scraped off by the piston 2 and a part thereof is adsorbed and spread by the wear ring 2d to perform a lubricating action. Clogging occurs near the surface. In detail, it fits in the vicinity of the inlet of the water-permeable hole of the water-permeable cylinder and closes the water-permeable hole, thereby hindering the filtering action.
Since the pressure air blows in the direction opposite to the arrow a (arrow c), the mud particles clogged in the vicinity of the inner peripheral surface of the water permeable cylinder 3 are back-washed and returned into the cylinder head chamber Ch. Mixed in the muddy water. Muddy water that has been mixed with sedimentary mud particles will be concentrated, albeit minutely. The air that has finished the backwashing action flows again in the direction of arrow a when the piston 2 descends and enters the water purification chamber 5 or enters the concentrated mud Cm.
[0048]
FIG. 3 is a diagram of a muddy water treatment plant configured to install the plunger pump shown in FIG. FIG. 3 is a system diagram in which a pipe symbol mark is added to a cross-sectional view schematically showing the embodiment.
The plunger pump in which the piston 2 is housed in the water permeable cylinder 3 shown in FIG. 3 is a schematic diagram of the plunger pump shown in FIG. 1 described above. 3 is surrounded by an outer cylinder 4 and a water purification chamber 5 is formed.
[0049]
A hydraulic cylinder 6 is mounted concentrically with the cylinder bottom of the water permeable cylinder 3, and a hydraulic piston 7 of the hydraulic cylinder 6 is attached to the “piston rod 2 a of the plunger pump”. As a result, the piston rod 2d is shared by the plunger pump and the hydraulic cylinder.
The hydraulic pump 9 sucks the hydraulic oil in the hydraulic oil tank 8 and feeds it to the hydraulic cylinder 6 via the automatic switching valve 10.
As a result, the hydraulic piston 7 drives the piston rod 2a to expand and contract, causing the piston 2 to reciprocate in the vertical direction in the figure.
[0050]
The vacuum pump 16 vacuums the water purification chamber 5 of the plunger pump via the steam separator 15.
The purified water vacuumed from the purified water chamber 5 is separated from the bubbles by the air / water separator 15, and the purified water 21 is taken out through the purified water collection pipe 20. Since it is comprised in this way, there is no possibility that purified water may flow into the vacuum pump 16 and damage it.
In this example, the plunger pump and the accessory member, the vacuum pump 16 and the accessory member, and the hydraulic pump 9 and the accessory member are installed on land. However, in the present invention, the term "land" includes the shipboard, and in short, means above the water surface of the muddy pond.
[0051]
The plunger pump sucks mud water in the mud pond 11 through the suction valve 3a. The above muddy ponds are not limited to ponds in the narrow sense, but mean a large amount of muddy water, such as lakes and lakes or springs, that are to be treated.
The muddy water concentrated by the plunger pump is injected into the concentrated muddy water tank 12 through the discharge valve 3b.
The concentrated muddy water tank 12 communicates with the suction valve 3a via a return line 14 having a throttle valve 22 that can be cut off.
[0052]
When the throttle valve 22 is closed, the return pipe 14 is not provided, and the muddy water concentrated by the plunger pump is temporarily stored in the concentrated muddy water tank 12 and sent to a filter press (not shown). Processed.
When the throttle valve 22 is opened, the concentrated muddy water in the concentrated muddy water tank 12 flows back to the plunger pump through the return line 14, is concentrated again, and is sent to the concentrated muddy water tank 12, and is circulated and flowed repeatedly. .
As the circulating flow continues, the concentration action further proceeds and the concentrated mud is concentrated as long as it does not lose fluidity. Thus, if it concentrates extremely, the filter press operation | work which is a post process will be remarkably reduced.
In addition, the concentrated mud water tank 12 can have a small capacity, and can be configured as a portable member.
[0053]
The purified water 21 separated and extracted along with the concentration of the muddy water is taken out through the purified water sampling pipe 20 and used for working water or miscellaneous water.
In the present invention, purified water refers to filtered water that is not pure water. It is clear water or water that has been purified to an equivalent level by visual inspection. Although it is inappropriate to use it for drinking, it is easy to apply sterilization treatment or re-filtration treatment to obtain clean water by applying a known water treatment technique.
[0054]
FIG. 4 shows a muddy water treatment plant in which the plunger pump shown in FIG. 1 is installed in the muddy water to concentrate the muddy water in the muddy pond and to supply the separated purified water to the land for use. FIG. 3 is a system diagram in which a pipe symbol mark is added to a cross-sectional view schematically showing one embodiment of FIG.
The plunger pump and the attached members such as the outer cylinder 4 and the hydraulic cylinder 6 that are mechanically fixed to the plunger pump are installed in the muddy water of the muddy pond 11.
[0055]
In the present embodiment, the air sucked by the air pump 17 via the breather 18 is supplied to the cylinder bottom chamber Cb via the check valve 19. Thereby, muddy water does not leak into the cylinder bottom chamber Cb.
The hydraulic cylinder 6 is attached to the plunger pump, and the components that drive the piston 2 up and down upon receiving pressure oil from the hydraulic pump 9 are the same as those in the embodiment shown in FIG.
[0056]
When the piston 2 moves upward in the figure, the muddy water in the muddy pond 11 flows through the suction valve 3a and is sucked into the cylinder head chamber Ch. When the piston 2 moves downward in the figure, the muddy water in the cylinder head chamber Ch is discharged. It flows through the valve 3 b and the throttle valve 13 and returns to the muddy pond 11.
At this time, “pressure commensurate with the flow resistance of the throttle valve 13” is generated in the cylinder head chamber Ch, and a part of the water purification component constituting the muddy water in the cylinder head chamber Ch permeates the permeable cylinder 3. And flows into the water purification chamber 5.
[0057]
The actions described above with reference to FIG. 4 are combined, and the muddy water is gradually concentrated while circulating and flowing between the cylinder head chamber Ch of the plunger pump and the muddy pond 11, and the separated purified water 21 is purified water collecting pipe 20. It is sent to the land by the water and used as working water.
Since the muddy water in the muddy pond 11 is gradually concentrated to reduce the volume, the muddy water treatment cost by the filter press outside the figure is remarkably reduced.
In addition, the decrease in the amount of muddy water in the muddy pond 11 eliminates the possibility of the muddy water in the muddy pond 11 overflowing even if there is unexpected heavy rain or unexpected water discharge, which is also effective in terms of safety management.
[0058]
【The invention's effect】
As described above, the configuration and action of the embodiment of the present invention have been clarified, and according to the method of the invention of claim 1, the mud water to be treated is concentrated with high efficiency while continuously circulating and flowing. be able to.
Purified water, which is a component of muddy water, passes through the cylinder wall and is separated and extracted into the water purification chamber.
Solid particles that are components of muddy water remain inside the cylinder wall. However, these solid particles (mud particles) are not taken out as a plastic material, but are spread thinly on the inner peripheral surface of the cylinder by the piston, functioning as a lubricant, and excess solid components are scraped off by the piston. It is diluted by mixing with the mud water (it is diluted when paying attention to the mud particles, and it is concentrated when looking at the whole mud water).
The concentrated mud is finally finished by a filter press,
I. Compared with the case where it is not concentrated, the filter press process becomes much easier,
B. Condensed mud water is significantly easier to transport than unconcentrated raw water (mud water).
Moreover, according to the method of the present invention, the plunger pump, which is a means for condensing mud water, also has a function of pumping concentrated mud water, so that it can be carried out without increasing the equipment for transporting mud water. .
Actually, the capacity of the filter press can be greatly reduced and the required muddy water treatment capacity can be maintained by slightly modifying the muddy water supply pump in the conventional muddy water treatment facility.
[0059]
According to the second aspect of the invention, “muddy water pressurized in the cylinder head chamber and leaking between the cylinder and the piston and flowing into the cylinder bottom chamber” is concentrated in the water-permeable cylinder and moved to the water purification chamber. Can be combined with “purified water that did not leak” and extracted as “purified water”.
Since the extracted purified water is visually perceived as fresh water, it can be used effectively as working water or miscellaneous water. Moreover, if further processing is added, it can be used as clean water.
[0060]
According to the method of the invention of claim 3, clogging caused by the water-permeable cylinder acting as a filter can be automatically backwashed and cleaned, further improving reliability and facilitating maintenance. .
That is, when pressurized air is not supplied to the cylinder bottom chamber, the cylinder head chamber and the cylinder bottom chamber alternately become positive pressure and negative pressure as the piston reciprocates. When pressurized air is supplied to the cylinder bottom chamber, the cylinder bottom chamber is always at a positive pressure and almost filled with air.
A part of the pressure air filled in the cylinder bottom chamber permeates the water permeable cylinder and flows into the water purification chamber, and a part of the pressure air permeates the water permeable cylinder and flows into the cylinder head chamber. Thus, the flow direction of the air flowing into the cylinder head chamber is opposite to the “flow direction of the purified water that is pressurized by the plunger pump and flows into the water purification chamber”.
In this way, the mud particles clogging the permeable cylinder are backwashed. This cleaning action is performed automatically where the user cannot see it.
In addition, when the purified water that has flowed into the water purification chamber is extracted upward from the water purification chamber, part of the pressure air that has flowed into the water purification chamber becomes bubbles and rises in the water purification flow path, and acts as a bubble pump. , Extraction of purified water is promoted.
[0061]
According to the method of the invention of claim 4, the mud in the mud pond is pumped up and concentrated by a plunger pump, and the concentrated mud is stored in a concentrated mud tank and supplied to the filter press as the next step. The amount of work can be reduced.
In addition, it is possible to further reduce the volume of the concentrated mud water by increasing the degree of concentration by circulating the mud water between the mud water concentration tank and the plunger pump.
The increase in the degree of concentration can be arbitrarily adjusted within a range where the concentrated mud does not lose fluidity, and the burden on the filter press is greatly reduced.
Since the above-mentioned filter press work is expensive, the economic effect of reducing the work amount of the filter press is great.
[0062]
According to the method of the invention of claim 5, by installing or suspending a plunger pump in a muddy pond (or a similar muddy water storage tank) and operating it, the purified water attached to the plunger pump It is possible to obtain a new practical effect that is not expected in the prior art, in which the muddy water in the muddy pond is gradually concentrated while extracting purified water from the room.
When the muddy water stored in the muddy pond is continuously concentrated by the inventive method of claim 5, the amount of muddy water in the muddy pond decreases. This naturally reduces the amount of post-filter press work, but in addition, the following invisible effects can be obtained.
In other words, even if the amount of generated muddy water increases unexpectedly, the muddy water in the muddy pond does not overflow. This is not just a matter of work volume and work cost, but has an important significance of preventing construction disasters.
Considering this as a whole construction plan, the required capacity of the filter press is not only reduced by applying the present claim 5 to concentrate the muddy water, but also the water storage capacity of the muddy pond is sufficient.
[0063]
When the mud concentration pump apparatus according to the invention of claim 6 is applied, the mud can be concentrated by circulating and flowing.
In the plunger pump according to the first aspect of the present invention, since the cylinder is water permeable, when the muddy water sucked into the cylinder head chamber is pressurized by the piston, the purified water which is a component of the muddy water passes through the cylinder wall. It flows into the water purification chamber and is extracted, and solid components (mud particles) are separated by filtration and remain in the cylinder head chamber. For this reason, the muddy water in the cylinder head chamber has an increased solid component content (that is, is concentrated).
The solid component filtered off as described above adheres to the inner peripheral surface of the water permeable cylinder, but is immediately spread by wear ring and the excess is scraped off.
The spread solid component (mud fine particles) acts as a lubricant and is diluted with a large amount of muddy water scraped off. On the other hand, the concentration of muddy water in which solid components are dissolved increases. That is, it is concentrated.
Concentration of muddy water reduces the volume and reduces the amount of work of the filter press, which is the next process. Thereby, the outstanding practical effect that the total cost of muddy water treatment is reduced significantly is produced.
[0064]
According to the seventh aspect of the present invention, the purified water flowing into the water purification chamber and separated from the muddy water can be extracted and used.
That is, the cylinder head chamber of the plunger pump (requirement of claim 6) becomes a positive pressure or a negative pressure with the reciprocation of the piston, but by vacuum suction of the water purification chamber, The purified water is constantly extracted without flowing back into the cylinder head chamber.
Further, since the extracted purified water flows into the steam separator, there is no possibility that the purified water flows into the vacuum pump and damages it.
[0065]
According to the eighth aspect of the present invention, the water-permeable cylinder is always subjected to the backwashing action to be cleaned, so that it is not clogged.
That is, if the configuration is not such that pressurized air is supplied by applying this claim, the cylinder bottom chamber of the plunger pump becomes positive or negative with the reciprocation of the piston, and this is repeated. .
However, when the cylinder bottom chamber is connected to the pressure air source by applying the present invention, a positive pressure is always maintained in the cylinder bottom chamber regardless of the reciprocating motion of the piston.
The positive pressure air in the piston bottom chamber prevents “muddy water from leaking from the cylinder head chamber to the cylinder bottom chamber”.
Further, the pressure air in the cylinder bottom chamber passes through the cylinder wall and enters the water purification chamber, and again passes through the cylinder wall and flows into the cylinder head chamber.
The above “flow into the cylinder head chamber” is in the opposite direction compared to “flow when the purified water component in the muddy water is pushed by the piston and moves into the purified water chamber”. As a result, the cylinder wall of the water permeable cylinder is backwashed with pressurized air, and the cylinder wall is prevented from being clogged.
[0066]
According to the ninth aspect of the present invention, the muddy water concentrated by the plunger pump is stored in the concentrated muddy water tank.
Further, when the throttle valve is opened, the concentrated muddy water in the concentrated muddy water tank is again sucked into the cylinder head chamber of the plunger pump, and is further concentrated and sent to the concentrated muddy water tank.
By repeating the above-mentioned operation continuously, the muddy water circulates between the concentrated muddy water pump and the plunger pump, and the concentration proceeds.
The circulating flow can be adjusted by operating the throttle valve, and by closing the throttle valve, the circulation can be stopped and the one-way operation can be performed.
If the degree of enrichment is increased by increasing the circulation flow rate, the capacity of the concentrated mud tank is sufficient, and it becomes easy to configure it as a portable type.
[0067]
According to the invention device of claim 10, since purified water is sent from the plunger pump installed in the muddy water, it can be used as working water or miscellaneous water, or it can be used as clean water after further purification treatment. it can.
Since the purified water component is separated and extracted as described above, the muddy water in the muddy pond is concentrated and the volume is reduced.
When the volume of muddy water is reduced, the amount of work of the filter press, which is the next process, is reduced. Since this filter press work is intermittently operated and requires a lot of labor, the reduction of this work greatly contributes to the cost reduction of the entire muddy water treatment.
In addition, since the mud is concentrated and the volume is reduced, there is no possibility that the mud will overflow from the mud pond even if bad conditions such as rain, unscheduled water discharge and filter press failure overlap, which is also effective for disaster prevention. .
[0068]
According to the eleventh aspect of the present invention, the piston of the plunger pump can be reciprocated by the oil pressure.
Since the piston is driven without using a crank mechanism, no side pressure is applied to the piston, which is effective in improving durability.
The drive system according to the invention of claim 11 is particularly suitable when the plunger pump is used as a submersible pump, and it is not necessary to generate a power transmission line near the muddy water in the muddy pond. There is no safety.
[Brief description of the drawings]
FIG. 1 is a view showing a main part in one embodiment of the present invention, in which a piping symbol diagram is added to a sectional view of a plunger pump in which a piston is housed in a cylinder having water permeability and rigidity.
FIGS. 2A and 2B are views for explaining a plunger pump for pressurizing and feeding muddy water, which is a prior art related to the creation of the present inventor. FIG. 2A is a schematic sectional view, and FIG. FIG. 3 is an external view of a piston extracted and drawn.
FIG. 3 shows a muddy water treatment plant constructed by installing the plunger pump shown in FIG. 1 on the land to pump up and concentrate the muddy water in the muddy pond and extract the separated purified water so that it can be used. FIG. 3 is a system diagram in which a pipe symbol mark is added to a cross-sectional view schematically showing the embodiment.
4 is a muddy water treatment plant configured to install the plunger pump shown in FIG. 1 in the muddy water so as to concentrate the muddy water in the muddy pond and to supply the separated purified water to the land for use. FIG. 3 is a system diagram in which a pipe symbol mark is added to a cross-sectional view schematically showing one embodiment of FIG.
[Explanation of symbols]
1 ... Cylinder
1a ... Suction port
1b: Discharge port
2 ... Piston
2a ... Piston rod
2b ... V packing
2c ... Piston ring
2d ... Wear ring
3 ... Permeable cylinder
3a ... Suction valve
3b ... Discharge valve
4 ... Outer cylinder
5 ... Water purification room
6 ... Hydraulic cylinder
7 ... Hydraulic piston
8 ... Hydraulic oil tank
9 ... Hydraulic pump
10 ... Automatic switching valve
11 ... Muddy water pond
12 ... Concentrated mud tank
13 ... Throttle valve
14 ... Return line
15 ... Steam separator
16 ... Vacuum pump
17 ... Air pump
18 ... Breeza
19 ... Check valve
20 ... Purified water sampling tube
21 ... purified water
22 ... Throttle valve
Ca ... Pressure air
Cb ... Cylinder bottom chamber
Ch ... Cylinder head chamber
Cm ... concentrated mud
Mw ... Muddy water

Claims (11)

A piston (2) with a wear ring (2d ) is housed in a cylinder (3) having water permeability and rigidity to constitute a plunger pump,
By surrounding the cylinder (3) with an outer cylinder (4) to form a water purification chamber (5) and reciprocating the piston,
I. The muddy water to be treated is sucked into the cylinder head chamber of the plunger pump,
B. Pressurize the sucked muddy water in the cylinder head chamber,
C. While filtering the purified water component contained in the pressurized muddy water by the water permeability of the cylinder (3) and flowing it into the purified water chamber (5),
C. The filtered mud particle component remains in the cylinder (3),
D. The sludge-like mud particles that have been filtered and adhered to the inner wall surface of the cylinder (3) are scraped off by reciprocating sliding of the piston (2),
E. The mud water that has become thicker due to mixing of the mud particles scraped off is pressurized by the reciprocating drive of the piston and is intermittently discharged from the cylinder head chamber.
A method for concentrating mud water, comprising collecting the purified water from the mud water to be treated by repeating the above work cycle.   A wear ring (2d) is attached to the piston (2), and the purified water that has flowed into the purified water chamber (5) is drawn out from the purified water chamber by vacuum suction, and is used as working water or miscellaneous water. Or the method for concentrating mud water according to claim 1, wherein the method is used as source water of clean water. A wear ring (2d) is attached to the piston (2), and pressure air is supplied to a cylinder bottom chamber of the plunger pump via a check valve (19),
When the piston (2) moves away from the cylinder head and the pressure in the cylinder head chamber decreases, a part of the pressurized air flows into the cylinder head chamber via the water purification chamber (5), and the cylinder The method for concentrating mud water according to claim 1, wherein the water-permeable cylinder (3) forming the head chamber is back-washed to remove the adhering mud particles. The plunger pump is installed on land,
The muddy water in the muddy pond (11) is sucked into the cylinder head chamber and concentrated.
The concentrated mud is stored in the concentrated mud tank (12),
Concentrated mud of the concentrate tank (12), by allowed to circulating fluidized by rebreathing return pipe provided with a valve means (22) to (14) depending on the cylinder head chamber, causing further advance the concentrated action The method for concentrating muddy water according to any one of claims 1 to 3, wherein: The plan Japon flop placed in mud mud pond (11), or in the vicinity of muddy water surface,
The muddy water in the muddy pond is sucked into the cylinder head chamber of the plunger pump and pressurized, and the purified water components are filtered and concentrated.
The concentrated muddy water is circulated and circulated in the muddy pond (11).
4. The method according to any one of claims 1 to 3, wherein the entire mud in the muddy pond is gradually concentrated while collecting purified water from the muddy pond by repeating the above operation. Concentration method of muddy water. A piston (2) fitted with a wear ring (2d) is housed in a cylinder (3) made of a material having water permeability and rigidity to constitute a plunger pump,
A suction valve (3a) and a discharge valve (3d) are provided in the cylinder head of the plunger pump,
A muddy water concentrating pump device, wherein an outer cylinder (4) is fitted on the water permeable cylinder (3), and a water purification chamber (5) is formed between the two.   The water purification chamber (5) is connected to a vacuum pump (16) through a steam separator (15). The mud concentration pump apparatus according to claim 6.   The muddy water concentration pump device according to claim 6, characterized in that the cylinder bottom chamber of the plunger pump is connected to a pressure air source (17) via a check valve (19). The plunger pump is configured as a land-installed device,
A concentrated mud tank (12) to which the concentrated mud flowing out of the discharge valve (3b) is guided;
The concentrate mud tank (12) within said suction valve concentrated mud and return pipe leading to (3a) (14), said return pipe (14) in interposed connected throttle valve having a clamping cutting function (22 The muddy water concentration pump device according to claim 6, comprising: The plunger pump is configured as a submersible pump, and the outlet side of the discharge valve (3b) is open to the muddy water in the muddy pond (11),
The purified water collecting pipe (20) for feeding the purified water (21) filtered and extracted in the water purification chamber (5) to land or on the surface of the water is provided. Item 9. A muddy water concentration pump device according to any one of Items 8 to 9 . A hydraulic cylinder (6) is installed concentrically with the cylinder bottom side of the plunger pump,
The other end of the piston rod (2a) of the plunger pump, have hydraulic piston for the hydraulic cylinder (7) is mounted,
11. The hydraulic cylinder according to claim 6, wherein the hydraulic cylinder is configured to reciprocately drive the piston (2) of the plunger pump using a piston rod (2 a) in common. Mud concentration pump device.

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