KR100968253B1 - Plunger pump for chemicals mixing device - Google Patents

Abstract

The present invention relates to a plunger pump for efficiently injecting quantitative chemicals in a device for injecting chemicals used in the manufacture of polyurethane foam or in purifying water and sewage.

The present invention implements a new type of drug injection means for pumping the drug by using a dual type plunger that alternately operates when the drug is used in the production of polyurethane foam or water and sewage purification, it is possible to accurately match the dosage of the drug Accordingly, the efficiency of the chemical input process can be increased, and the driving part and the pumping part can be combined in one assembly form on one block, so that the size and structure of the device can be simplified. In addition, by adopting the dual type plunger type that operates alternately, two or more kinds of chemicals can be properly mixed and added, thereby providing a plunger pump for a chemical mixing device that can improve the functionality of the device and widen its application. do.

Description

Plunger pump for chemicals mixing device

The present invention relates to a plunger pump for a chemical mixing device, and more particularly, to a plunger pump for efficiently injecting a quantitative medicine in a device for injecting a chemical used in the manufacture of polyurethane foam or in purifying water and sewage.

In general, a water intake plant in which a constant water is collected is treated with water from a river or a reservoir and then filtered and disinfected.

For example, the raw material in which the flocculant is mixed is introduced into the screen tank by first filtering the solid having a large particle size, then mixing the flocculant and the raw water in a rapid mixing tank, and then performing slow stirring in a floc forming tank. Floating solids and colloidal substances of coagulate to form a large floc, which causes the floc to settle in the sedimentation basin, and then the floc is treated with a sludge treatment unit.

In the treatment of these constants, it is important to evenly dispense the quantitative chemicals into the raw water so that various impurities mixed in the raw water can be completely removed.

Therefore, in order to uniformly distribute the chemicals introduced during the water treatment process in the raw water was conventionally equipped with a separate mixing and stirring device for evenly mixing the water purification chemicals in the raw water.

However, in the case of the conventional chemical input method, the chemicals are generally injected through a pump, a nozzle, a spray pipe, etc., so that the facility itself is large and complicated, and above all, in terms of inputting the correct amount of chemicals. There is a weak point, and there is a disadvantage in that the input of the drug is not efficient, such as sometimes the amount is more than necessary because there is a lack of other control devices related to the dose adjustment of the drug.

On the other hand, polyurethane foam used as a container filling material is the most excellent insulating material among the organic and inorganic insulating material is used in container fillers, refrigerators, freezing containers, low-temperature warehouses, etc. that require high heat insulation.

This is because polyurethane foam is composed of independent bubbles, excellent heat insulation, and can control low density foam by adjusting the amount and type of blowing agent.

The main components of these polyurethane foam raw materials are generally composed of crosslinking agents, catalysts, blowing agents, additives, etc. to polyether polyols and isocyanates, and colorants are added to impart color thereto.

Colorant properties of dispersed organic or inorganic pigments and organic and inorganic mixtures should be very compatible with the raw materials as polyether polyols and isocyanates.

So that the polyurethane foam raw material is instantaneously mixed in the mixing head of the foaming machine.

Uniformly mixed and molded articles of the same color can be obtained.

Otherwise, a defective product that causes color streaks may occur in the molded article due to partial color defects, or in severe cases, may impede mixing of other raw materials and cause defects such as foaming defects and hardness irregularities.

Therefore, in the case of foam molding of polyurethane foam, it is important to quantitatively input chemicals such as various blowing agents and additives.

However, in the conventional polyurethane foam foaming of the chemicals is a form of mixing in the ratio of the main component of the polyurethane foam without a separate injection device, there is a limit to the exact amount of chemicals, such as a lot of error in weighing occurs. In addition, the process of adding the chemicals is made separately from the molding process, and also has a disadvantage in that the efficiency and productivity are poor in terms of productivity and workability because it depends on manual labor.

Therefore, the present invention has been made in view of the above, a new type of chemical injection means for pumping the drug using a dual-type plunger that operates alternately when the chemicals used in the manufacture of polyurethane foam or water and sewage purification, etc. By implementing the, it is possible to accurately match the dosage of the drug, and accordingly to provide a plunger pump for the drug mixture device that can increase the efficiency of the drug input process.

In addition, another object of the present invention is to provide a plunger pump of a compact form, such as simplifying the size and structure of the device by combining the driving portion and the pumping portion in one assembly form on one block.

In addition, the present invention adopts a dual-type plunger type that operates alternately to properly mix and inject two or more kinds of chemicals, thereby providing a plunger pump which can improve the functionality of the apparatus and widen its application. There is a purpose.

In order to achieve the above object, the plunger pump for chemical mixing device provided in the present invention is a block having a crank rod and a space portion for installation of a plunger coupled with a crank shaft and a link therein, which is installed below the space portion of the block plunger A crank rod for operating a crank shaft and a pair of links coupled to the crank rod is installed side by side above the space portion of the block is connected to the link side coupled to the top of each crank rod to pump the medicine through the forward and backward reciprocating motion And a pair of plungers and plunger cylinders, which are installed at the upper end of the block, communicate with the plunger cylinder side, and are discharged one-to-one to each plunger and having a valve body for opening and closing by plunger pressurization. A pair of plungers driven by the crankshaft and the rod alternately As is characterized in that to the discharge the medicines to be supplied into the plunger cylinder.

In addition, the link is positioned between the crank rod and the plunger, it is characterized in that it is penetrated through the sliding hole formed in the block to rise and fall vertically.

The plunger pump for a chemical mixing device as described above is connected to each discharge nozzle side to incorporate a medicine discharged from each discharge nozzle, a meta connected to one side of the housing to display pressure, and the housing. It is preferable to configure in a form further comprising a chemical mixing and supply device consisting of a flow regulator installed in the discharge line extending from.

Plunger pump for chemical mixing device provided in the present invention has the following advantages.

First, by inputting the drug using the dual type plunger pumping alternately, it is possible to add the correct amount of the drug, as well as to accurately mix the two or more types of drugs.

Secondly, since it is composed of an assembly type in which a drive unit consisting of a crankshaft and a rod and a pumping unit consisting of a pair of plungers are combined in one block, the device can be made compact, such as greatly reducing the overall size and size. Improve layout space utilization.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 and 2 are a front sectional view and a side view showing a plunger pump for a drug mixing device according to an embodiment of the present invention, Figure 3 is a front sectional view according to another embodiment.

First, as shown in FIGS. 1 and 2, the plunger pump includes a crank shaft 10, a crank rod 11 coupled with a link 11a, a plunger 12, a plunger cylinder 14, and the like. The pumping means composed of a) and the like is composed of a structure in which the assembly is combined in one assembly form, and in the form of discharging the medicine in a dual type in which the pair of plungers 12 are operated alternately.

To this end, a rectangular block 13 corresponding to the main body of the plunger pump is provided, and the crank shaft 10 and the link 11a coupled to the crank shaft 10 and the plunger 12 inside the block 13. A space is installed for installing the light.

In addition, both sides of the upper end of the block 13 is formed with a chemical input hole 24 into which the chemical is input, and the chemical input hole 24 at this time is an external chemical supply source (not shown) and tube tubes. Connected, the medicine from the chemical supply source can be injected into the plunger cylinder 14 to be described later through the chemical input hole 24.

In addition, a crank rod 11 having a crank shaft 10 and a link 11a coupled thereto is provided as a driving means for the operation of the plunger 12 performing a pumping action.

The crankshaft 10 is driven by an actuator, such as a motor (not shown), is installed in a form that penetrates through the lower portion of the space of the block 13 and installed in a structure in which both ends are supported by the bearing cap 22. do.

The crank rod 11 to which the link 11a is coupled is a portion for substantially operating the plunger 12, and is installed in a form having a central axis eccentric with each other while maintaining a predetermined distance from each other on the crank shaft 10. Consists of two, the plunger 12 is assigned to the link 11a coupled to the upper portion of each crank rod 11 one by one.

Accordingly, when the crank shaft 10 is rotated, each plunger 12 is sequentially one by one, that is, by the crank movement of the crank rod 11 to which the link 11a is coupled, that is, while moving up and down alternately, It can be pumped.

The link 11a coupled to the upper portion of the crank rod 11 is coupled to the sliding hole 13a formed in the block 13 so as to vertically move up and down, and the sliding hole 13a to freely slide without large friction. Inside the bushing is preferably fastened.

The plunger 12 for pumping the drug is a dual type, and consists of a pair installed side by side.

Each of these plungers 12 is arranged side by side vertically in the inner space of the block 13, the rear end is pin-connected to the crank rod 11, while the front end is installed on the inner hole processing portion of the upper end of the block 13 It is installed in the form of being inserted into the plunger cylinder 14.

In the case of the plunger cylinder 14, the medicine input hole 24 provided in the block 13 and the inside thereof allow the medicine to be injected from the outside into the cylinder.

The discharge nozzle 16 is responsible for discharging the chemical pressurized by the plunger pumping action in the plunger cylinder 14 to the outside of the final block.

The discharge nozzle 16 is disposed in the form of extending coaxially with the plunger cylinder 14 and at the same time communicating with the inside of the cylinder is installed in a structure that is fastened to the upper end of the block (14).

In particular, the discharge nozzle 16 at this time is screwed to the upper end of the block 13 together with the nut 17 coupled to the outer surface as shown in Figure 3, that is, depending on the degree of screwing, that is, to loosen and tighten As a result, the length extension from the side of the block 13 can be adjusted, and accordingly, the flow rate of the chemical discharged by the plunger 12 can be adjusted.

For example, if the nut 17 is slightly loosened and then pulled out of the block 13 while rotating the entire discharge nozzle 16, the cylinder volume increases by that much, so that The chemical can be discharged, and if the nozzle is inserted into the inside of the block 13 while rotating the entire discharge nozzle 16, the volume of the chemical can be reduced while reducing the cylinder volume.

The discharge nozzle 16 as described above has a support body 25 assembled therein, a valve body 15 that can be opened and closed while being inserted into a hole of the support body 25 and restoring force to the valve body 15. It includes a spring 23 to provide.

Accordingly, when the pressing force of the plunger 12 is applied, the valve body 15 opens the hole while being pushed out by pushing the force of the spring 23, and at the same time, the chemical is discharged through the hole. It can be discharged to the outside of the block through the maximum discharge port.

On the other hand, the present invention is connected to the plunger pump side and the line as shown in Figure 4, the chemicals discharged from the two places to combine, or to adjust the appropriate flow rate to the final mixing facility (not shown) to play the role of chemical mixing and Supply device 21 is provided.

The chemical mixing and supplying device 21 includes a housing 18, a meta 19, a flow regulator 20, and the like, each of which is connected to a line such as a tube, a hose, a pipe, or the like, and serves as a bar. Done.

That is, the housing 18 is connected to the two discharge nozzles 16 side to combine the chemicals discharged from each nozzle side, the meta 19 is connected to one side of the housing 18 to pressure It serves to display, the flow regulator 20 is installed on a line extending from the housing 18 serves to control the flow rate of the drug supplied through the line at this time.

Therefore, looking at the operating state of the plunger pump for chemical mixing device is configured as follows.

Figure 4 is a front view showing the operating state of the plunger pump for drug mixing device according to an embodiment of the present invention.

As shown in FIG. 4, liquid medicine provided from a medicine supply source such as a medicine storage tank is supplied into the plunger cylinder 14 through the medicine input hole 24 in the block 13, and together with the crank By alternating pumping of a pair of plungers 12 operated by the shaft 10 and the crank rod 11, the chemicals in each cylinder are transferred to the housing of the chemical mixing and supplying device 21 through the discharge nozzle 16. Are sent to (18).

That is, when the plunger 12 rises, the chemical in the cylinder exits the final discharge port of the discharge nozzle 16 by the pressure at this time and enters the housing 18.

Here, the medicines supplied into the two plunger cylinders 14 may be the same kind of medicines or different kinds of medicines.

Subsequently, the chemicals introduced into the housing 18 are mixed therein and then sent to the chemical mixing facility via the flow regulator 20 so that they can be mixed there.

In this way, the chemical injection process is made by the alternating pumping operation by the dual type plunger operating while maintaining the correct stroke, it is possible to quantitatively input the drug, as well as to mix the correct amount of two or more chemicals Can be.

In addition, the crankshaft, the crank rod, the plunger, the plunger cylinder, the discharge nozzle, and the like are combined in an assembly form through one block, so that the overall size and volume of the plunger pump can be minimized. Increase overall design freedom.

1 is a front sectional view showing a plunger pump for a drug mixing device according to an embodiment of the present invention

Figure 2 is a side configuration view showing a plunger pump for drug mixing device according to an embodiment of the present invention

Figure 3 is a front sectional view showing a plunger pump for drug mixing device according to another embodiment of the present invention

Figure 4 is a front view showing the operating state of the plunger pump for drug mixing device according to an embodiment of the present invention

<Description of the symbols for the main parts of the drawings>

10: crankshaft 11: crank rod

12 plunger 13 block

14 plunger cylinder 15 valve body

16 discharge nozzle 17 nut

18: housing 19: meta

20: flow regulator 21: chemical mixing and supply device

22: bearing cap 23: spring

24: chemical input hole

Claims (4)

A block 13 having a space for installing the crank rod 11 and the plunger 12 to which the crank shaft 10 and the link 11a are coupled, and installed below the space of the block 13 A crank rod 11 coupled with a crank shaft 10 for operating the plunger 12 and a pair of links 11a, and each crank rod 11 are installed side by side above the space portion of the block 13. A pair of plunger 12 and plunger cylinder 14 connected to the link 11a coupled to the side to pump the medicine through the forward and backward reciprocating motion, and the plunger cylinder 14 being installed at the upper end of the block 13. And a discharge nozzle 16 having a valve body 15 which is in communication with the side) and is connected to each plunger 12 one-to-one, and opened and closed by plunger pressurization, and a pair of plungers are operated alternately. Drugs, characterized in that to discharge the medicine supplied to the inside Plunger pump for mixing device. The method according to claim 1, wherein the link (11a) is positioned between the crank rod 11 and the plunger 12, characterized in that penetrated through the sliding hole (13a) formed in the block 13 to vertically move up and down Plunger pump for chemical mixing device. The method of claim 1, wherein the discharge nozzle 16 is screwed to the upper end of the block 13 in a structure coupled to the nut 17 on the outer surface, extending from the block 13 side by loosening and tightening the screw The plunger pump for chemical mixing device, characterized in that the length can be adjusted to adjust the discharge flow rate by the plunger (12). The method according to claim 1, wherein the housing 18, which is connected to each of the discharge nozzles 16 side to coalesce the medicine discharged from each discharge nozzle 16, and connected to one side of the housing 18, the pressure For drug mixing device further comprises a drug mixing and supply device 21 consisting of a meta (19) and a flow regulator 20 installed in the discharge line extending from the housing (18) Plunger pump.

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