KR20220161913A - Micro metering pump - Google Patents

Abstract

The present invention relates to a micro metering pump. In accordance with the present invention, when an operation cam is rotated, the micro metering pump ascends through compression and decompression procedures of an elastic member, wherein as a space of an operation pressure part is narrowed in a state in which a discharge case, a discharge guide unit, an opening/closing unit, and a lifting unit have descended, the opening/closing unit guides a fluid to be discharged through an opening/closing hole and a discharge hole while descending and then, as the opening/closing unit ascends and returns, the lifting unit, the opening/closing unit, the discharge guide unit, and the discharge case ascend and return. Therefore, through a mechanical structure including the elastic member, the discharge case, the discharge guide unit, the opening/closing unit, and the lifting unit, instead of a diaphragm structure, pumping is performed in accordance with a pressure change of a fluid occurring as expansion into an original state is performed after contraction with respect to the operation pressure part, which is a space outside a membrane of a suction case, thereby enabling stable micro metering pumping without causing components to be easily deformed, and enabling the micro metering pumping on the fluid to be efficiently performed for a long period.

Description

Micro metering pump {Micro metering pump}

The present invention relates to a micro-metering pump, and more particularly, when an operating cam rotates, an elastic member moves up and down through a process of compression and release of compression. As the space of the part becomes narrow, the opening and closing opening descends and discharges and guides the fluid through the opening and closing hole of the discharge guide hole and the discharge hole, and then the opening and closing opening ascends and returns to raise and return the diaphragm. Pressure change of the fluid that occurs as it expands to its original state after being narrowed for the operating pressure part, which is the outer space of the separation membrane of the suction case, through the mechanical structure including the non-structural elastic member, discharge case, discharge guide, opening and closing openings, and elevators. The present invention relates to a micro-quantity pump capable of performing micro-quantity pumping stably without being easily deformed with respect to the components while applying a configuration in which pumping is performed according to .

In general, metering pumps suck liquid through a suction pipe and then discharge it through a discharge pipe, and are used in various fields.

In other words, metering pumps are generally used in fields where an accurate amount of fluid must be supplied at regular intervals, such as wastewater treatment, water treatment, and physics and chemistry fields. A metering pump is essential.

At this time, a very small amount as an amount pumped by a metering pump will be referred to as a "micro amount" hereinafter.

A conventional metering pump includes a storage tank containing a fluid normally supplied, an eccentric cam rotated by a motor, a diaphragm reciprocated periodically by a pumping shaft that is in periodic contact with the eccentric cam, and coupled to the lower portion of the diaphragm. It is composed of a structure in which a suction pipe connected to the storage tank and a discharge pipe coupled to the upper part of the diaphragm and transporting liquid to a desired place are combined.

The conventional metering pump as described above can perform a pumping action according to a periodic reciprocating motion through a pumping shaft in a sealed state by a diaphragm, but this diaphragm structure is overheated due to external conditions or when operated in a sealed state. However, there is a problem that deformation easily occurs during continuous repetitive operation, and thus, the sealing maintenance state is easily unstable, and accordingly, there is a problem that the efficiency of pumping in a fixed amount is lowered.

That is, the conventional metering pump has a problem in that the efficiency of pumping a small amount is lowered even though it pumps in a fixed amount. In the case of such a diaphragm structure, it is difficult to mention the efficiency of pumping in an unspecified amount because hunting of the supply amount is severe due to back pressure.

Therefore, through a separate mechanical structure rather than a diaphragm structure, micro-quantity pumping can be stably performed without easily changing the pumping configuration according to the pressure change of the fluid, and micro-quantity pumping of the fluid can be performed efficiently over a long period of time. Research and development of a micro-metering pump that can be achieved is required.

Republic of Korea Patent No. 1823607 2018.01.24. registration. Republic of Korea Patent No. 1784188 2017.09.27. registration. Republic of Korea Patent No. 1255595 2013.04.04. registration. Republic of Korea Patent No. 1205869 2012.11.22. registration.

In order to solve the above problems, the present invention moves up and down through the process of compressing and releasing the compression of the elastic member when the operating cam rotates, and the space of the operating pressure unit in a state in which the discharge case, the discharge guide, the opening and closing opening, and the elevator are lowered. As this narrows, the opening and closing opening descends and discharges and guides the fluid through the opening and closing hole of the discharge guide hole and the discharge hole, and then the opening and closing opening rises and returns so that the elevator door, opening/closing opening, discharge guide, and discharge case rise and return, resulting in a diaphragm structure. Through a mechanical structure including an elastic member, a discharge case, a discharge guide, an opening, an opening, an opening, etc., the operating pressure part, which is the outer space of the separation membrane of the suction case, is narrowed and then expanded to the original state according to the pressure change of the fluid. It is an object of the present invention to provide a micro-metering pump capable of performing micro-quantity pumping stably without being easily deformed with respect to the components while the configuration in which the pumping is applied is applied.

Another object of the technology according to the present invention is to narrow the operating pressure part, which is the outer space of the separation membrane of the suction case, through a mechanical structure including an elastic member, a discharge case, a discharge guide, an opening, an opening, a lift, etc. rather than a diaphragm structure. Micro-quantity pumping for fluid is efficient over a long period of time by applying a configuration in which pumping is performed according to the pressure change of the fluid that occurs while expanding to its original state, so that micro-quantity pumping can be performed stably without being easily deformed for the components. is to make it happen.

The present invention for achieving the above object is as follows. That is, the micro metering pump according to the present invention is provided in a pair of 'L'-shaped case types with open facing sides, a plurality of ribs are provided in the open installation space, and are in close contact with each other. A body case that is fixed along the circumference through fastening of fixing bolts, and has a long hole formed on one side of the upper portion of the vertical portion and a single hole formed on one side of the lower portion; It is installed to protrude from the inside of the vertical part of the main body case to the outside, and the suction connector is fixedly installed so as to protrude a certain length through a single hole in the main body case, and is bent upward from the suction connector to seal the lower side. The inlet is formed to protrude upward for a certain length to communicate with the inlet hole of the inlet connector, and the separation membrane protrudes higher than the top of the inlet at a certain distance from the circumference of the inlet, and the lower end of the elastic member is installed on the floor between the inlet and the separator, A suction case in which an operating pressure unit is formed between the separator and the inner wall of the hollow inner space; At the same time, the upper outer side is formed with an inward end, and the upper inner side is provided in a hollow cylindrical shape with an outward end. It is arranged at a certain distance from the door and selectively moves up and down, the upper end of the elastic member is in close contact with the inner part of the upper part, and the outer surface is recessed with a groove for guiding fluid upward; The lower side is arranged so as to surround the upper end of the doorway, and the protrusion protruding downward from the center of the lower surface is arranged to protrude downward for a certain length through the center of the doorway, and is opened and closed at the end of the upper protrusion protruding in a cylindrical shape from the center of the upper surface. an opening and closing opening in which a protrusion protrudes with an inward end, and a groove is recessed on an outer surface of a portion surrounding the passage so that fluid guided through the groove of the passage is guided upward; It is connected to the opening and closing so that the lower side covers the upper surface of the opening and closing, and the upper protrusion of the opening and closing is inserted upward from the bottom to the discharge guide hole penetrated in the center, and the central part in the longitudinal direction of the discharge guide hole is narrowed inward toward the hollow disk to open and close. A ball is formed and the discharge guide is selectively opened in a closed state by the opening and closing protrusion of the opening and closing opening with respect to the opening and closing hole; It is fixed inside the vertical part of the main body case, and the open lower side is fixed so as to wrap over a certain length downward from the top of the suction case to seal the open top of the suction case, and the outer surface away from the lower end of the discharge guide by a certain distance upward is in the center. A fixed guide that protrudes upward to allow a certain length of elevation through the; It is disposed inside the vertical part of the main body case, and the open lower side wraps around the upper end of the fixing guide for a certain length and is arranged to ascend and descend, and the discharge connector protrudes outward from one side of the sealed upper part and the discharge connector is formed to protrude, and the upper portion is sealed from the discharge connector end. A discharge case in which a discharge hole is formed through the bottom of the discharge hole, the upper portion of the discharge guide is closely inserted and connected to the lower portion of the discharge hole, and the discharge connector protrudes to the outside by a certain length through the long hole of the main body case; It is fixed and installed through a fixing guide and a fixing bolt so that the lower side of the discharge case is wrapped around a certain length downward from the top of the fixing guide so that it can be lifted up and down, and a long groove is formed on one side corresponding to the long hole of the main body case. Lift guide for guiding the lift of the case; a drive motor disposed inside the horizontal portion of the main body case and fixedly installed so as to be orthogonal to the top of the discharge case; and an actuating cam that is connected to the shaft of the driving motor and driven, and operates to move the discharge case up and down by a certain distance by an eccentricity when the outer surface is rotated through driving of the driving motor in a state of being in close contact with the upper end of the discharge case.

At this time, when the space of the operating pressure unit is narrowed in a state in which the elevator shaft, opening/closing door, and discharge guideway are lowered through the elevation of the discharge case, the fluid moves upward from the operating pressure unit through the groove of the elevator shaft and the groove of the opening/closing opening, and the opening/closing opening The grooves of the hoistway are recessed on the outer surface of the hoistway to guide the fluid upward so that the opening and closing hole can be smoothly opened by lowering a certain length. The recesses of the opening and closing doors are also recessed on the outer surface of the portion surrounding the doorways so that the fluid guided through the recesses of the doorways is guided upward, and it is preferable to form a plurality of recesses at regular intervals in the circumferential direction.

In addition, one side of the operating cam is axially connected to the shaft of the drive motor so that a part in close contact with the top of the discharge case can be replaced and used, and the engaging step is recessed with an inward end away from the side opposite to the shaft at a certain distance. A cam body provided in a ring type and fixed to be caught on the hooking step from the side opposite to the drive motor of the cam body, and the outer surface is fixed to be caught on the hooking step of the cam body and the cam ring closely installed on the top of the discharge case It is preferable to include a fixing member for restraining and fixing the cam ring on the cam body by fastening and fixing from the side opposite to the driving motor of the cam body so as to constrain the fixed state to the installed cam ring.

At this time, it is preferable that the fixing member is provided as a washer-integrated bolt having a washer part extending outward along the circumference of the head so as to constrain and fix the cam ring on the cam body.

In addition, the discharge case has a width corresponding to the width of the cam ring on the upper surface and is recessed downward at a certain depth so that the close contact state of the cam ring can be maintained restrained when the operating cam is in close contact with the cam ring at the top. It is preferable that a restraining groove for insertion and restraint is formed.

In addition, the fixing guide is fixed inside the vertical part of the main body case, and the fixing brackets are protruded in the form of a vertical plate on both sides of the lower part, and the pair of main body cases are positioned inside the vertical part of the main case with respect to the fixing bracket. It is preferable to be fixed together when fixing through a fixing bolt for.

Moreover, so that the upper part of the discharge guide can be tightly inserted and connected to the lower part of the discharge hole, the upper part of the discharge guide is fitted and fixed so that the downward restraining ring and the O-ring sequentially cover the outer surface of the discharge hole of the discharge case from the upper end. It is preferable to insert and connect to the lower part of the discharge hole in the state.

The effects of the micro-metering pump according to the present invention are described as follows.

First, when the operating cam rotates, it moves up and down through the process of compression and release of compression of the elastic member. In the state where the discharge case, discharge guide, opening/closing opening, and elevator opening descend, as the space of the operating pressure part becomes narrow, the opening/closing opening descends and the fluid After guiding the discharge through the opening/closing hole and the discharge hole of the discharge guide, the opening and closing opening rises and returns, and the elevator, opening/closing opening, discharge guide, and discharge case are configured to ascend and descend so that the discharge case rises and returns, so that the elastic member, the discharge case, and the discharge guide After being narrowed for the operating pressure part, which is the outer space of the separation membrane of the suction case, through a mechanical structure including openings, openings, doors, etc., the configuration in which pumping is performed according to the pressure change of the fluid generated while expanding to the original state is applied to the components. Micro-quantity pumping can be performed stably without being easily deformed.

Second, through a mechanical structure including an elastic member, a discharge case, a discharge guide, an opening, an opening, an elevation, etc. rather than a diaphragm structure, the fluid generated while expanding to its original state after being narrowed for the operating pressure part, which is the outer space of the separation membrane of the suction case. Micro-quantity pumping of the fluid can be performed efficiently over a long period of time by enabling micro-quantity pumping to be stably performed without being easily deformed with respect to the components while applying a configuration in which pumping is performed according to a change in pressure.

1 is an exploded perspective view showing a micro metering pump according to the present invention.
Figure 2 is a perspective view showing the coupling structure of the micro-metering pump according to the present invention.
Figure 3 is a flat separation configuration diagram showing a pumping structure, which is a main part, in a micro-metering pump according to the present invention.
Figure 4 is a micro-metering pump according to the present invention, a main part bottom separation configuration showing the main part pumping structure.
5 to 7 are examples of use states showing the use states of the micro-metering pump according to the present invention.

Hereinafter, preferred embodiments of the micro-metering pump according to the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective configuration diagram showing a micro-metering pump according to the present invention, and FIG. 2 is a perspective configuration diagram showing a coupled structure of the micro-metering pump according to the present invention.

3 is a plane separation configuration diagram showing a main part pumping structure in a micro metering pump according to the present invention, and FIG. 4 is a main part bottom separation configuration diagram showing a main part pumping structure in a micro metering pump according to the present invention.

5 to 7 are diagrams illustrating the state of use of the micro-metering pump according to the present invention.

As shown in FIGS. 1 to 7, the micro-metering pump 100 according to a preferred embodiment of the present invention has a suction line (not shown) from the outside so that fluid is sucked into the suction connector 111 of the suction case 110 provided at the bottom. When connected through the suction connector 111, the fluid sucked through the suction connector 111 is discharged in a fixed amount through the discharge connector 161 of the discharge case 160 provided at the top. Suction case 110, elevator shaft 120, opening/closing door 130, discharge guide 140, fixing guide 150, discharge case 160, lift guide 170, drive motor 180, and operation It consists of a cam 190.

Specifically, the body cases 101 and 102 are provided as a pair of 'L'-shaped case types with open facing sides, and a plurality of ribs (unsigned) in the open installation space (unsigned). Is provided, and is fixed by fastening the fixing bolt (B) along the circumference in a state of being in close contact with each other, so that a long hole 103 is formed on one side of the upper part of the vertical portion and a single hole 104 is formed on one side of the lower part will be.

At this time, the long hole 103 and the short hole 104 are a pair of long holes in the vertical direction formed when the main body cases 101 and 102 are fixed by fastening the fixing bolts B, and a circular through-hole type. It means the single hole of

In addition, as described above, inside the main body cases 101 and 102 fixed as a pair through the fastening of the fixing bolts B, a suction case 110, an elevation port 120, an opening and closing port 130, and a discharge guide to be described later 140, the fixing guide 150, the discharge case 160, the lift guide 170, the drive motor 180, and the operating cam 190 are installed inside.

In addition, in the main body cases 101 and 102 as described above, the ribs (unsigned) provided in the open internal installation space are provided in the form of a plate for supporting the components installed inside the normal case without flow. , It is provided on a plate having a certain thickness in which a hemispherical groove for support is recessed, and a more detailed description thereof will be omitted.

On the other hand, the suction case 110 is installed to protrude from the inside of the vertical portion of the main body cases 101 and 102 to the outside, and the suction connector 111 protrudes a certain length through the single hole 104 of the main body cases 101 and 102. ) is fixedly installed, and the suction port 113 is upwardly bent and extended from the suction connector 111 to communicate with the suction hole 111a of the suction connector 111 at the bottom of the inner space formed in a hollow type in which the lower side is sealed. extrusion is formed.

In addition, in the suction case 110 as described above, the separation membrane 115 protrudes higher than the top of the suction port 113 at a predetermined interval around the suction port 113, and the bottom between the suction port 113 and the separator 115 The lower end of the elastic member 110 'is seated and installed, and the operating pressure unit 117 is formed between the separator 115 and the inner wall of the hollow inner space.

That is, in the suction case 110, a suction line (not shown) for suctioning fluid from the outside is connected to the side end protruding from the main body cases 101 and 102 of the suction connector 111 through the single hole 104 This is preferable, in particular, the end of the suction connector 111 as described above is screwed with a connection cap (unsigned) for maintaining the connection state after the suction line provided in the usual flexible tube type is connected through fitting desirable.

In addition, the elevation hole 120 is formed in such a way that the upper outer side has an inward end and at the same time the upper inner side is provided in a hollow cylindrical shape with an outward end, so that it is inserted and installed inside the suction case 110 so as to be able to move up, and when descending, the separator 115 ) is disposed at a certain distance from the top of the separator 115 so that the lower end inside the suction case 110 is selectively lifted.

In particular, the upper end of the elastic member 110' is in close contact with a stepped portion on the inner side of the upper part of the elevator shaft 120, and a recess 120a for guiding fluid upward is formed on the outer surface.

In addition, the lower side of the opening and closing opening 130 is disposed so as to surround the upper end of the hoistway 120, and the lower surface protrudes downward from the center so that the protrusion 131 penetrates the center of the hoistway 120 and protrudes downward for a certain length. are placed

Moreover, in the opening and closing opening 130 as described above, an opening/closing protrusion 133 is protruded with an inward end at the end of the upper protrusion 133a protruding in a cylindrical shape from the center of the upper surface, and the groove 120a of the elevator door 120 is formed. A groove 130a is recessed on the outer surface of the part surrounding the elevator shaft 120 so that the fluid guided through it is guided upward.

In addition, the discharge guide hole 140 is connected to the opening and closing opening 130 so that the lower side covers the upper surface of the opening and closing opening 130, and the upper protrusion 130a of the opening and closing opening 130 is connected to the discharge guide hole 141 penetrating the center of the lower part. is inserted upwardly from

In addition, the discharge guide hole 140 narrows inwardly in the shape of a hollow disc at the central portion of the discharge guide hole 141 in the longitudinal direction to form an opening/closing hole 141a.

That is, the discharge guide hole 140 as described above is selectively opened in a closed state by the opening and closing protrusion 133a of the opening and closing hole 141a.

In addition, the fixing guide 150 is fixed to the inside of the vertical portion of the body cases 101 and 102, and is fixed so that the open lower side is wrapped over a certain length downward from the top of the suction case 110, so that the suction case 110 ) is closed, and the outer surface, which is a certain distance upward from the lower end of the discharge guide 140, penetrates the center and protrudes upward to be able to move up and down a certain length.

Moreover, the fixing guide 150 as described above is fixed inside the vertical portion of the main body cases 101 and 102, and fixing brackets 151 protrude in a vertical plate type on both sides of the lower part, so that the fixing bracket 151 It is preferable to be fixed together when fixing through a fixing bolt (B) for a pair of body cases (101, 102) in a state to be located on the inside of the vertical portion of the body cases (101, 102).

In addition, the fixing guide 150 protrudes along the lower circumference to be mutually fixed to each other in the vertical direction through the lifting guide 170 and the fixing bolt B' to be described later, and a plurality of brackets (Mi) code) is further provided.

That is, the fixing guide 150 protrudes along the lower circumference and has a through hole in the center, in a state where the bracket is in close contact with the lower surface of the lift guide 170, both sides of the lower end of the lift guide 170. As the fixing bolt (B ') is fastened through a coupling hole (not shown) provided in, it can be mutually fixed with the lifting guide in the vertical direction.

In addition, the discharge case 160 is disposed inside the vertical portion of the main body cases 101 and 102, the open lower side wraps around the upper portion of the fixing guide 150 for a certain length and is disposed to ascend and descend, and the closed upper side The discharge connector 161 protrudes outward from the discharge connector 161, and the discharge hole 161a is formed through the lower surface of the sealed upper portion from the end of the discharge connector 161.

In this discharge case 160, in particular, the upper portion of the discharge guide 140 is closely inserted and connected to the lower portion of the discharge hole 161a, and the discharge connector 161 is inserted into the long hole ( 103), it is preferable to protrude a certain length to the outside.

In other words, the discharge case 160 has a discharge line (not shown) for discharging fluid from the outside at the side end protruding through the long hole 103 from the body cases 101 and 102 of the discharge connector 161. It is preferable to be connected, and in particular, the end of the discharge connector 161 as described above is connected by fitting a discharge line provided in a normal flexible tube type, and then a connection cap (unsigned) for maintaining the connection state is screwed. this is preferable

In addition, the lifting guide 170 is wrapped around the lower side of the discharge case 160 over a certain length downward from the upper end of the fixing guide 150 in a state where it can be moved up and down, and the fixing guide 150 and the fixing bolt (B) '), the long groove 173 is recessed to correspond to the long hole 103 of the body cases 101 and 102 on one side, and guides the elevation of the discharge case 160.

The drive motor 180 is disposed inside the horizontal portions of the main body cases 101 and 102 and is fixedly installed so as to cross the top of the discharge case 160 at right angles.

In addition, the operating cam 190 is driven by being connected to the shaft of the driving motor 180, and when the outer surface is in close contact with the upper end of the discharge case 160, the driving motor 180 rotates through the discharge by eccentricity. This is to operate the case 160 to move up and down a certain distance.

The micro-metering pump 100 according to the present invention having the configuration as described above is in a state in which the elevation 120 through the elevation of the discharge case 160, the opening/closing port 130, and the discharge guide 140 are lowered. When the space of the operating pressure unit 117 is narrowed, the opening and closing opening 130 moves upward from the operating pressure unit 117 through the groove 120a of the elevator shaft 120 and the groove 130a of the opening 130 with respect to the fluid. ) is lowered by a certain length so that the opening and closing hole 141a can be opened smoothly.

To this end, the concave grooves 120a of the hoistway 120 are recessed to guide the fluid upward on the outer surface of the hoistway 120, and it is preferable to have a plurality of recesses at regular intervals in the circumferential direction.

In addition, the groove 130a of the opening and closing port 130 is also recessed on the outer surface of the portion surrounding the hoisting port 120 so that the fluid guided through the groove 120a of the hoisting port 120 is guided upward. It is preferable to have a plurality of depressions formed.

In other words, the grooves 130a of the opening and closing opening 130 are spaced at regular intervals in the circumferential direction on the outer surface of the portion surrounding the hoistway opening 120, that is, the central portion where the protruding portion 131 and the upper protruding portion 133 protrude into the lower and upper portions. It is preferable to form a depression with a.

As shown in FIGS. 3 and 4, the opening and closing opening 130 as described above may be extended further downward by a certain length compared to the groove 130a with respect to the protruding portion on both sides of the groove 130a.

Of course, the opening and closing opening 130 may form the same lower end as the groove 130a without extending a certain length further downward than the groove 130a for the portion protruding with the steps on both sides of the groove 130a.

On the other hand, in the micro-metering pump 100 according to the present invention configured as described above, it is important that the working cam 190 can be used by replacing a part of the discharge case 160 in close contact with the upper end.

Therefore, the operating cam 190 preferably includes a cam body 191, a cam ring 192, and a fixing member 193.

In detail, one side of the cam body 191 is axially connected to the shaft of the drive motor 180, and the engaging step 191a is recessed with an inward end away from the side opposite to the shaft at a certain distance.

In addition, the cam ring 192 is provided in a ring type and is fixedly installed so as to be caught on the engaging step 191a from the side opposite to the drive motor 180 of the cam body 191, and the outer surface is at the top of the discharge case 160. It will be closely installed.

In addition, the fixing member 193 is on the opposite side of the drive motor of the cam body 191 so as to restrain the fixed state with respect to the cam ring 192 fixedly installed so as to be caught on the engaging step 191a of the cam body 191. It is fastened and fixed from the cam body 191 to constrain and fix the cam ring 192.

In other words, the operating cam 190 is composed of the cam body 191, the cam ring 192, and the fixing member 193 as described above, so that the operating cam 190 is rotationally driven in close contact with the discharge case 160. ) For the cam ring 192, the fixing member 193 can be released and selectively easily separated and then replaced with a new cam ring 192 to facilitate maintenance of the device.

Moreover, in the actuating cam 190 configured as described above, it is preferable that the fixing member 193 is provided as a washer-integrated bolt with a washer portion extending on an outward piece along the circumference of the head portion.

Of course, although not specifically shown in the drawing, the fixing member 193 may be provided as a bolt having a normal head, and in this case, it is preferable that a separate washer is additionally applied.

In addition, in the micro-metering pump 100 according to the present invention configured as described above, when the discharge case 160 is in close contact with the cam ring 192 of the operating cam 190 at the top, the cam ring 192 A restraining groove 165 is formed on the upper surface to have a width corresponding to the width of the cam ring 192 and to be depressed downward to a certain depth so that the close contact state can be maintained by inserting a certain length of the close contact portion of the cam ring 192 it is desirable

In addition, in the micro-metering pump 100 according to the present invention configured as described above, it is important that the upper portion of the discharge guide 140 can be closely inserted and connected to the lower portion of the discharge hole 161a.

To this end, the upper part of the discharge guide 140 is fitted and fixed to the discharge hole 161a of the discharge case 160 so that the downward restraining ring O' and the O-ring sequentially cover the outer surface from the upper end. is inserted and connected to the lower part of the discharge hole 161a.

In other words, the discharge hole 161a of the discharge case 160 is expanded with a step at the lower end penetrating the sealed upper bottom surface of the discharge case 160, and the discharge guide 140 with respect to the expanded portion. It is preferable that the restraining ring (O') and the O-ring (O), which are fitted and fixed to the upper part sequentially to cover the outer surface, are inserted and connected.

On the other hand, in the micro metering pump 100 according to the present invention configured as described above, the part extending a certain distance upward from the lower end of the elevator door 120, the opening and closing door 130, and the discharge guide 140 is the suction connector. It is bent and extended upward from (111) and is disposed in an inner space formed in a hollow type in which the lower side is sealed.

In other words, in the micro-metering pump 100 according to the present invention, as described above, a portion extending a certain distance upward from the lower end of the elevator shaft 120, the opening/closing port 130, and the discharge guide port 140 is upward from the suction connector 111. Elevation port 120 together with the discharge case 160 when the discharge case 160 ascends and descends through the rotation of the operating cam 190 in a state of being disposed in the inner space formed in a hollow type that is bent and extended and the lower side is sealed, It consists of a structure in which the opening/closing opening 130 and the discharge guide 140 move up and down in conjunction with each other.

Describing the use state of the micro-metering pump 100 according to the present invention having the configuration as described above, first, the initial state is a state in which the discharge case 160 as shown in FIG. 5 has been raised, and then the drive motor ( 180) is driven, the suction connection line (not shown) connected to the suction connector 111 of the suction case 110 while the discharge case 160 is lowered by the eccentric part of the operation cam 190 while the operation cam 190 rotates. When the fluid is sucked through), the fluid flows into the operating pressure unit 117.

Then, as shown in FIG. 6, in a partially lowered state of the discharge case 160, the inner side and the outer side of the separation membrane 115 are separated, and the fluid introduced into the operating pressure unit 117 is sealed.

As shown in FIG. 7 after the fluid is sealed in the operating pressure unit 117 as described above, the eccentric side of the operating cam 190 reaches the lower end, and the discharge case 160 is placed at the bottom dead center. In this process, the fluid in the operating pressure unit 117 moves upward while passing through the groove 120a of the hoisting port 120 and the groove 130a of the opening and closing port 130 (133a) is moved downward a certain distance, and at the same time, a certain amount of fluid is discharged and guided through the opening and closing hole (141a) opened by the downward movement of the opening and closing protrusion (133a).

As described above, the fluid to be discharged is discharged to the outside through the discharge hole 161a of the discharge case 160 through the opening/closing hole 141a.

As described above, the discharge of a fixed amount through one rotation of the operating cam 190 according to the driving of the driving motor 180 can be discharged in a minute amount corresponding to the volume of the operating pressure unit 117. There is, and this micro-quantity discharge can be repeatedly discharged according to the repeated number of rotations of the operating cam 190 driven by the drive motor 190.

Of course, the driving of the drive motor 180 for the above-described quantitative discharge may be controlled to be driven for a certain period of time through the control of a separately connected controller (not shown), although it is not specifically shown in the drawings, and through this, the controller (not shown) It is possible to make the discharge of a certain amount while being driven over the time set by the time).

According to the micro-metering pump according to the present invention having the configuration described above, when the actuating cam rotates, the elastic member moves up and down through the process of compression and release of compression, while the discharge case, discharge guide, opening and closing port, and elevator port are lowered. As the space of the operating pressure part is narrowed, the opening and closing opening descends and discharges and guides the fluid through the opening and closing hole of the discharge guide and the discharge hole, and then the opening and closing opening rises and returns so that the elevator, opening, closing, discharge guide, and discharge case rise and return. As a result, the fluid generated while expanding to its original state after being narrowed for the operating pressure part, which is the outer space of the separation membrane of the suction case, through a mechanical structure including an elastic member, a discharge case, a discharge guide, an opening, an opening, an elevation, etc., rather than a diaphragm structure. Micro-quantity pumping can be performed stably without being easily deformed with respect to the configurations while the configuration in which pumping is performed according to the change in pressure is applied.

Furthermore, fluid generated while expanding to its original state after being narrowed for the operating pressure part, which is the outer space of the separation membrane of the suction case, through a mechanical structure including an elastic member, a discharge case, a discharge guide, an opening, an opening, a lift, etc., rather than a diaphragm structure. Micro-quantity pumping for fluid can be efficiently performed over a long period of time by enabling micro-quantity pumping to be stably performed without being easily deformed with respect to the components while applying a configuration in which pumping is performed according to a change in pressure.

Although specific embodiments of the present invention have been described in detail above, the present invention is not limited thereto, and various modifications can be made to the present invention by those skilled in the art, and these modifications is included in the scope of the present invention.

100: micro metering pump
101, 102: body case 103: long hole
104: single hole 110: suction case
110a: fixing bracket 111: suction connector
111a: suction hole 113: suction port
115: separation membrane 117: operating pressure unit
110 ': elastic member 120: hoistway
120a: groove 130: opening and closing
130a: groove 131: protrusion
133: upper protrusion 133a: opening and closing protrusion
140: discharge guide hole 141: discharge guide hole
141a: opening and closing hole 150: fixing guide
151: fixing bracket 160: discharge case
161: discharge connector 161a: discharge hole
165: restraint groove 170: lift guide
173: Janghom 180: drive motor
190: operating cam 191: cam body
191a: hooking step 192: cam ring
193: fixing member
B, B': fixing bolt
O: O-ring
O': restraining ring

Claims (7)

It is provided as a pair of 'L'-shaped case types with open facing sides, a number of ribs are provided in the open interior installation space, and the fixing bolt (B) is fastened along the circumference in a state of close contact with each other. Fixed through, while the long hole 103 is formed on one side of the upper portion of the vertical portion while the single hole 104 is formed on one side of the lower body case (101, 102);
It is installed to protrude from the inside of the vertical part of the main body case (101, 102) to the outside, and the suction connector 111 is fixedly installed so as to protrude a certain length through the single hole 104 of the body case (101, 102), and the suction connector ( 111), a suction port 113 protrudes upward for a certain length so as to communicate with the suction hole 111a of the suction connector 111 at the bottom of the inner space formed in a hollow type in which the lower side is sealed and bent upward, and the suction port 113 The separator 115 protrudes higher than the upper end of the inlet 113 at a predetermined interval around the circumference, so that the lower end of the elastic member 110 'is installed on the floor between the inlet 113 and the separator 115, and the separator ( 115) and a suction case 110 in which an operating pressure unit 117 is formed between the inner wall of the hollow inner space;
At the same time, the upper outer side is formed to have an inward end, and the upper inner side is provided in a hollow cylindrical shape with an outward end, so that it is inserted and installed inside the suction case 110 so as to be able to ascend, and when descending, the suction case to cover the separator 115 ( 110), the lower end is disposed at a certain distance from the upper end of the separation membrane 115 and selectively moves up and down, and the upper end of the elastic member 110 'is in close contact with the stepped part inside the upper part, and guides the fluid upward to the outer surface. The entrance and exit port 120 in which the groove 120a for the depression is formed;
The lower side is arranged to surround the upper end of the hoistway 120, and the protrusion 131 protrudes downward from the center of the lower surface is disposed to protrude downward for a certain length through the center of the hoistway 120, and has a cylindrical shape from the center of the upper surface. An opening/closing protrusion 133 is formed protruding with an inward end at the end of the upper protrusion 133a protruding toward, and surrounds the elevator shaft 120 so that the fluid guided through the groove 120a of the elevator shaft 120 is guided upward. An opening and closing opening 130 in which a groove 130a is recessed on the outer surface;
The lower side is connected to the opening and closing opening 130 so as to cover the upper surface of the opening and closing opening 130, but the upper protrusion 130a of the opening and closing opening 130 is connected upwardly from the bottom to the discharge guide hole 141 penetrating through the center, and the discharge guide hole An opening/closing hole 141a is formed at the central part in the longitudinal direction of the hollow disk by narrowing inwardly on a hollow disk, and selectively closed with respect to the opening/closing hole 141a by the opening/closing protrusion 133a of the opening/closing opening 130. Discharge guide opening 140;
It is fixed inside the vertical portion of the body cases 101 and 102, and the open lower side is fixed to wrap over a certain length downward from the top of the suction case 110 to seal the open top of the suction case 110, and discharge A fixed guide 150 protruding upward to allow a predetermined length to be lifted through the center of an outer surface separated by a predetermined distance upward from the lower end of the guide 140;
It is disposed inside the vertical part of the main body case (101, 102), the open lower side wraps around the upper part of the fixing guide 150 for a certain length and is arranged to rise and fall, protrudes outward from one side of the sealed upper part, and discharge connector (161 ) is formed to protrude from the end of the discharge connector 161 to pass through the lower surface of the closed upper portion to form a discharge hole 161a, and the upper portion of the discharge guide 140 is closely attached to the lower portion of the discharge hole 161a. A discharge case 160 that is inserted and connected, and the discharge connector 161 protrudes to the outside by a predetermined length through the long hole 103 of the main body case 101, 102;
It is fixed and installed through the fixing guide 150 and the fixing bolt (B') so that the lower side of the discharge case 160 is wrapped in a state in which the lower side of the discharge case 160 can be moved up and down over a certain length from the upper end of the fixing guide 150 downward. an elevating guide 170 in which the elongated grooves 173 correspond to the elongated holes 103 of the main body cases 101 and 102 and guide the elevating of the discharge case 160;
a drive motor 180 disposed inside the horizontal portions of the body cases 101 and 102 and fixedly installed so as to be orthogonal to the top of the discharge case 160; and
It is connected to the shaft of the drive motor 180 and driven, and when the outer surface is in close contact with the upper end of the discharge case 160, the discharge case 160 is moved up and down by a certain distance by the eccentricity when the drive motor 180 rotates. A micro metering pump comprising an actuating cam 190 for operation.
According to claim 1,
When the space of the operating pressure unit 117 is narrowed in a state in which the elevation 120 through the elevation of the discharge case 160, the opening/closing port 130, and the discharge guide 140 are lowered, the operating pressure unit for the fluid While moving upward through the groove 120a of the hoistway 120 and the groove 130a of the gate 130 from 117, the gate 130 is lowered by a certain length so that the opening and closing hole 141a is opened smoothly. so that you can
The grooves 120a of the hoistway 120 are recessed on the outer surface of the hoistway 120 to guide the fluid upward, and are recessed in a plurality at regular intervals in the circumferential direction.
The recess 130a of the opening and closing opening 130 is also recessed on the outer surface of the part surrounding the opening 120 so that the fluid guided through the opening 120 is guided upward, and a number of recesses are formed at regular intervals in the circumferential direction. A micro-metering pump characterized in that it is formed by recessing.
According to claim 1,
The operation cam 190 can be used by replacing a part in close contact with the top of the discharge case 160,
A cam body 191, one side of which is shaft-connected to the shaft of the drive motor 180, and the engaging step 191a is recessed with an inward end at a predetermined distance from the side opposite to the shaft;
A cam ring 192 provided in a ring type and fixedly installed so as to be caught on the hooking step 191a from the side opposite to the drive motor 180 of the cam body 191, the outer surface being closely installed on the top of the discharge case 160 and
The cam body 191 is fastened and fixed from the side opposite to the drive motor of the cam body 191 so as to restrain the fixed state with respect to the cam ring 192 fixedly installed so as to be caught on the engaging step 191a of the cam body 191 A micro-metering pump comprising a fixing member 193 for restraining and fixing the cam ring 192 on the top.
According to claim 3,
The fixing member 193 is so that the cam ring 192 can be constrained and fixed on the cam body 191,
A micro-metering pump characterized in that it is provided as a washer-integrated bolt with a washer part extended on an outward piece along the circumference of the head part.
According to claim 3,
When the operation cam 190 is in close contact with the cam ring 192 at the top of the discharge case 160, the close contact state of the cam ring 192 can be restrained and maintained,
A micro-metering pump, characterized in that a restraining groove 165 is formed on the upper surface to have a width corresponding to the width of the cam ring 192 and to be recessed downward to a predetermined depth to restrain by inserting the contact portion of the cam ring 192 for a predetermined length.
According to claim 1,
The fixing guide 150 is fixed inside the vertical parts of the main body cases 101 and 102, and fixing brackets 151 are protruded in a vertical plate type on both sides of the lower part, so that the fixing bracket 151 is attached to the main body case ( A micro-metering pump characterized in that it is fixed and installed together when fixing through a fixing bolt (B) to a pair of body cases (101, 102) in a state so as to be located inside the vertical parts of (101, 102).
According to claim 1,
So that the upper part of the discharge guide 140 can be closely inserted and connected to the lower part of the discharge hole 161a,
The upper part of the discharge guide 140 is fixed to the discharge hole 161a of the discharge case 160 so that the downward restraining ring O' and the O-ring sequentially cover the outer surface from the upper end, and the discharge hole 161a is fixed. A micro-metering pump characterized in that it is inserted and connected to the lower part of (161a).

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