KR20020065460A - Reciprocating pump utilized motor - Google Patents

Abstract

PURPOSE: A reciprocating pump using driving motor is provided to smoothly execute pumping by installing the driving motor on a center of one side of an outer surface of a pump cylinder. CONSTITUTION: A pump includes a cylindrical pump cylinder(10); an upper cylinder head(20) and a lower cylinder head(20') joined to an upper end and a lower end of the pump cylinder to seal and cover and having intake valves(21,21') and discharge valves(22,22'), respectively; a pump piston(30) installed in the pump cylinder and having a long hole penetrating a center thereof and rack gears(32,32') protruding on an upper horizontal plane and a lower horizontal plane of the long hole; a driving motor joined to a center of one side of an outer surface of the pump cylinder so that a rotary axis(41) thereof is placed on an axis of the long hole; and a pinion gear joined on the rotary axis of the driving motor, rotating together with the rack gears and having a gear tooth(52) protrusively formed on a rotating periphery of a gear body(51).

Description

Reciprocating pump using driving motor {RECIPROCATING PUMP UTILIZED MOTOR}

The present invention relates to a reciprocating pump. More specifically, a piston inside a cylinder executes a linear reciprocating motion by rotating a single drive motor, and fluid or gas is introduced through both cylinder heads by a linear reciprocating motion of the piston. And it relates to a reciprocating pump using a drive motor to be discharged.

In general, a pump refers to a machine that transports a liquid or gas through a pipe by a pressure action, or pumps a fluid in a low pressure container into a high pressure container through a pipe. There are rotary pumps, centrifugal pumps, axial pumps, friction pumps, and other pumps, and it is well known that the pump is divided into a water supply pump and a deep well pump depending on the purpose.

Accordingly, the reciprocating pump sucked and discharged the fluid into the suction valve and the discharge valve while the piston inside the cylinder was linearly reciprocated. As shown in FIG. 1, the cylinder head ( 2, 2 'are combined, and suction valves 2a, 2a' and discharge valves 2b, 2b 'are formed on both sides of the upper and lower cylinder heads 2, 2,', respectively. A pump piston (3) is connected to the delivery pipe (2d) and the pump piston (3) by the linear reciprocating motion of the pump piston (3) is provided with a structure in which a pump piston (3) for linear reciprocating motion is installed inside the pump cylinder (1). ) The fluid was sucked through the suction pipe 2c to the cylinder interior parts on both sides, and then discharged through the discharge pipe 2d.

Therefore, according to the structure used in the past as a power transmission means for the linear reciprocating motion of the pump piston (3) the driving cylinder (4) on one side of the upper and lower cylinder head (2, 2 ') of the pump cylinder (3) Bar is formed, the upper and lower sides of the drive cylinder 4, the hydraulic inlet and outlet 7a, 7b by the hydraulic device (not shown) is formed, the inside of the drive cylinder (4) A driving piston 5 for linear reciprocating motion is formed by alternating hydraulic pressure between the hydraulic inlets and outlets 7a and 7b, and a piston rod 6 is coupled to one side of the driving piston 5 to It is connected to the pump piston 3 inside the pump cylinder 1 through the center of one cylinder head 2.

Therefore, when the driving piston 4 linearly reciprocates by the hydraulic pressure which is alternately entering and exiting through the upper and lower hydraulic inlets and outlets 7a and 7b of the driving cylinder 4, the driving piston 4 The pump piston 3 inside the pump cylinder 1 was linearly reciprocated by the piston rod 6 formed on one side to perform a pumping operation.

However, according to such a structure, first, a separate driving cylinder 4 and a driving piston 5 must be formed in order to operate the pump piston 3, and in order to linearly reciprocate the driving piston 6, There was a problem that the hydraulic device 7 is required.

That is, the problem that the volume of the reciprocating pump itself is increased and a separate device according to it has to be linked, there is a problem that raises the unit price.

In addition, since the piston rod 6 is coupled to one side of the pump piston 3, the amount of fluid or gas introduced into and discharged from both sides of the pump cylinder 1 when the pumping operation is performed is the volume of the piston rod 6. As long as the difference occurred, there was a problem that severe pulsation occurs.

On the other hand, according to the conventional reciprocating pump, the suction pipe 2c or the discharge pipe 2d is branched to the upper and lower cylinder heads 2 and 2 'of the pump cylinder 1, and the respective suction valves 2a and 2a' or It is directly connected to the delivery valves 2b and 2b '. According to this structure, the amount of fluid flowing in or out of the upper and lower pump cylinders 1 by the linear reciprocating motion of the pump piston 3 is covered. Due to the instantaneous inflow and outflow of fluid through a narrow or impossible pipe, there is a problem in that a lot of pressure and heavy load are generated.

Therefore, the present invention has been made in order to solve the above problems and shortcomings, the main purpose is to install a drive motor in the center of one side of the outer surface of the pump cylinder, the pump piston is linear by one-way rotation of the drive motor It is to provide a reciprocating pump using a drive motor to perform a smooth pumping operation while reciprocating.

Another object of the present invention is to significantly reduce the pulsation by supplying the same amount of fluid flowing into and out of the pump cylinders on both sides, and also to smoothly fill the fluid flowing into and out of the suction pipe or discharge pipe pressure and pressure It is intended to provide a reciprocating pump using a drive motor that can be executed effectively by reducing the load significantly.

Another object of the present invention is to allow the pump piston to reciprocate linearly by one-way rotation of the drive motor, the moment load of the drive motor to the inertia of the pump piston and the wear of the rack and pinion gear accordingly It is to provide a reciprocating pump using a drive motor to compensate.

Another object of the present invention is to form a rotary cam coupled to one side on the rotation axis of the pinion gear, a rotation space corresponding to the rotary cam is formed on one side of the rack gear of the pump piston, by the rotation of the rotary cam It is to provide a reciprocating pump using a drive motor that allows the pump piston to move up and down a certain distance for smooth operation of the rack and pinion gear.

Figure 1 is a side cross-sectional view showing a conventional reciprocating pump

Figure 2 is an exploded perspective view showing a reciprocating pump using a drive motor of the present invention.

Figure 3 is a perspective view showing a reciprocating pump using a drive motor of the present invention.

Figure 4 is a side cross-sectional view showing a reciprocating pump using a drive motor of the present invention.

5 is a reference diagram showing the relationship between the rack and pinion gear of the present invention.

Figure 6 is an enlarged view of the main part of the reciprocating pump using the drive motor of the present invention.

Figure 7a, 7b is a use state showing the operation of the reciprocating pump using the drive motor of the present invention.

<Brief description of symbols for the main parts of the drawings>

10: pump cylinder 20, 20 ': upper and lower cylinder head

21, 21 ': suction valve 22, 22': discharge valve

23, 23 ': pressure buffer room 24: suction line

25: delivery pipe 30: pump piston

31: Long hole 32, 32 ': Rack gear

33: rotation space 40: drive motor

41: rotation axis 50: pinion gear

51: gear body 52: gear teeth

53: rotating cam 60, 60 ': spring

The reciprocating pump using the drive motor of the present invention for achieving the above object,

Cylindrical pump cylinders of constant size;

Upper and lower cylinder heads coupled to the upper and lower ends of the pump cylinders to be sealed off, and having suction valves and discharge valves formed at both sides thereof;

A pump piston installed inside the pump cylinder and having a long hole penetrating through the center thereof, and a rack gear protruding from a center line of the upper and lower horizontal planes of the long hole;

A driving motor coupled to a center of one side of the outer surface of the pump cylinder, the outer axis of which is located on a long hole centerline of the pump piston;

It is coupled to the line of rotation of the drive motor to be rotated in engagement with the rack gear, the gear teeth protruding within a certain angle on the outer periphery of the gear body;

In addition, a rotation cam is formed on one side of the pinion gear on the rotation axis, and a fixed rotation space is formed on one side of the rack gear of the pump piston corresponding to the rotation cam, and the upper and lower ends of the rotation space when the rotation cam is rotated. A reciprocating pump using a drive motor, characterized in that formed in contact with the surface (33a, 33b) to force the pump piston (30) to move up and down a predetermined distance. Rotating cam is coupled on the rotation axis of the pinion gear, A fixed rotation space is formed at one side of the rack gear of the pump piston corresponding to the rotating cam, and the pump piston is forced to contact the upper and lower ends of the rotating space during the rotation of the rotating cam for smooth operation of the rack and pinion gear. It is made to move up and down a certain distance.

In addition, a pressure buffer room of a predetermined space is formed outside the suction valve and the discharge valve.

In addition, a spring for maintaining a constant elastic force is formed between the upper and lower cylinder head and both end portions of the piston, respectively.

Hereinafter, described in detail by the accompanying drawings as follows.

Figure 2 is an exploded perspective view showing a reciprocating pump using a drive motor of the present invention.

Figure 3 is a perspective view showing a reciprocating pump using a drive motor of the present invention.

Figure 4 is a side cross-sectional view showing a reciprocating pump using a drive motor of the present invention.

5 is a reference diagram showing the relationship between the rack and pinion gear of the present invention.

Figure 6 is an enlarged view of the main part of the reciprocating pump using the drive motor of the present invention.

Figure 7a, 7b is a use state showing the operation of the reciprocating pump using the drive motor of the present invention.

The reciprocating pump using the drive motor of the present invention, as shown in Figures 2 to 4, first and foremost, the upper and lower cylinder head coupled to the pump cylinder 10 of a predetermined size, and the pump cylinder 10 20, 20 ′, a pump piston 30 coupled to the pump cylinder 10 and having a long hole 31 and rack gears 32 and 32 ′ therein, and an outer circumferential surface of the pump cylinder 10. The suction motor 24 is composed of a drive motor 40 coupled to the center and a pinion gear 50 coupled with the rack gears 32 and 32 'to be engaged on the rotation shaft 41 line of the drive motor 40. The liquid introduced through) is formed to be discharged through the delivery pipe 25.

The pump cylinder 10 is formed in a tubular shape of a predetermined size and the coupling hole 11 is formed so that the rotary shaft 41 of the drive motor 40 can be penetrated through the center of one side of the outer peripheral surface, preferably the Sealing and bearing (not shown) are formed in and out of the coupling hole 11.

The upper and lower cylinder heads 20 and 20 'are coupled so that the upper and lower openings of the pump cylinder 10 are hermetically closed. The suction valves 21 and 2 1' and the discharge valves are provided at both lower ends of the pump cylinder 10, respectively. 22 and 22 'are formed, the intake valves 21 and 21' and the delivery valves 22 and 22 'may be formed in the form of check valves that are open in only one direction.

At this time, the upper side of the suction valve (21, 21 ') and the discharge valve (22, 22') is formed so that the pressure buffer room (23, 23 ') of a predetermined space, respectively, the respective pressure buffer room (23, The suction pipe 24 and the discharge pipe 25 are coupled to the outside of 23 ', that is, both side ends of the upper and lower cylinder heads 20 and 20'.

The pump piston 30 is installed in the pump cylinder 10 to be reciprocated by one-way rotation of the drive motor 40. For this purpose, the pump piston 30 is fixed at the center of the pump piston 30. A long hole 31 having a size is formed therethrough, and rack gears 32 and 32 'are protruded from the upper and lower horizontal surfaces of the long hole 31, respectively, and gears are formed at both circular arcs of the long hole 31, respectively. Do not

In addition, at one side of the rack gears 32 and 32 'of the pump piston 30, a rotation space 33 through which the rotation cam 53 is rotated is formed, and the rotation space 33 is a rotation cam ( At the time of rotation of 53, the pump piston 30 is forcibly moved by a certain distance in contact with the upper and lower ends 33a and 33b.

In addition, a seal is coupled to the outer circumference of both ends of the pump piston 30.

The drive motor 40 is coupled to the rotating shaft 41 is coupled to the coupling hole 11 formed at the center of one side of the outer peripheral surface of the pump cylinder 10, the line of the pump piston 30 on the rotation shaft 41 The pinion gear 50 is formed to be engaged with the rack gears 32 and 32 'to be rotated.

The pinion gear 50 meshes with the rack gears 32 and 32 'on the outer periphery of the gear body 51 and the gear body 51 formed so as to be idle between the ridges of both rack gears 32 and 32'. The gear teeth 52 are protruded so as to be rotated, but the gear teeth 52 protrude only within a predetermined angle on the outer circumference of the gear body 51.

That is, the pump piston 30 in one direction rotation of the pinion gear 50 by causing the outermost gear teeth 52 of both sides of the pinion gear 50 to rotate alternately at one end of both rack gears 32 and 32 '. Make a straight reciprocating exercise.

In addition, the rotation cam 53 is formed on one side of the pinion gear 50 on the rotation axis, that is, in the direction in which the rotation space 33 of the pump piston 30 is formed, and the rotation cam 53 rotates in the rotation space. The pump piston 30 is forcibly moved up and down by a predetermined distance in contact with the upper and lower ends 33a and 33b of (33).

At this time, a spring (60, 60 ') having a constant elastic force is coupled between the inner center of the upper and lower cylinder head (20, 20') and both side ends of the pump piston (30), respectively.

Therefore, looking at the operation and operation of the reciprocating pump using the drive motor of the present invention by such a structure as follows.

First, when the power is applied to the driving motor 40 coupled to one side of the outer circumferential surface of the pump cylinder 10, the pinion gear 50 coupled to the rotation shaft 41 is rotated.

At this time, since the gear teeth 52 are formed only within a predetermined angle on the outer circumference of the pinion gear 50, the gear teeth 52 are both sides with respect to the one-way rotation of the pinion gear 50. The pump piston 30 performs a linear reciprocating motion while alternately engaging the rack gears 32 and 32 '.

Therefore, the operation of the pinion gear 50 and the rack gears 32 and 32 ', for example, the gear teeth 52 of the pinion gear 50 in the state in which the pump piston 30 is stopped as shown in FIG. Rotation cam 53 is located in the center of the rotation space 33 in the state that is engaged with the rack gear 32 on one side, when the drive motor 40 rotates in one direction, the pump piston 30 is the rotation direction Start linear motion with.

Next, when the pump piston 30 reaches the peak of the one-way linear motion by the one-way rotation of the pinion gear 50, one outermost gear tooth 52 of the pinion gear 50 rotates in engagement with one rack gear 32. According to the rotation of the pinion gear 50, the rotary cam 53 contacts the upper surface 33a of one side of the rotation space 33 corresponding thereto, and the pump piston is rotated by the rotational deviation of the rotary cam 53. 30) forcibly move a certain distance.

Accordingly, while the piston piston 30 moves by a certain distance by the rotation cam 53 in the rotation space 30, the outermost gear teeth 52 of the pinion gear 50 are connected to the other rack gear 32 ′. The mesh rotates smoothly.

That is, while the one-way rotation of the pinion gear 50 is maintained, the gear teeth 52 of the pinion gear 50 are engaged with the other rack gear 32 'and rotate so that the pump piston 30 moves in a straight direction in the opposite direction. To start.

In other words, by operating the gear teeth 52 protruding within a predetermined angle on the outer periphery of the rotation of the gear body 51 of the pinion gear 50 and the rotation of the rotating cam 53 in the rotation space 33 pump piston ( The rack pistons 32 and 32 'are alternately rotated in engagement with each other, so that the pinion gear 50 is rotated in one direction by the drive motor 40, while the pump piston 30 executes a linear reciprocating motion. Can be.

In this case, when the direction of movement of the pump piston 30 is changed, the load applied to the driving motor 40 and the wear of the rack gears 32 and 32 'and the pinion gear 50 may be compensated. Between the lower cylinder head (20, 20 ') and both ends of the pump piston (30) is coupled to the spring (60, 60') having a constant elastic force.

That is, smooth rotation may be achieved by equalizing the inertia energy of the tension force of the two springs (60, 60 ') and the one-way branch line movement of the pump piston (30).

In addition, the spring (60, 60 ') is the initial position of the motor 40 by positioning the pump piston 30 in the pump cylinder (10) by the elastic force of its own when the pump piston 30 is stopped, To reduce the load on the rotation.

Meanwhile, as shown in FIGS. 6 and 7A and 7B, pressure relief chambers 23 and 23 ′ of a predetermined space are formed outside the suction valves 21 and 21 ′ and the discharge valves 22 and 22 ′. By smoothly circulating the fluid flowing into and out of the pump cylinder 10 according to the reciprocating motion of the pump piston 30, the rotational force of the drive motor 40 and the load of pumping are reduced.

That is, when the pump piston 30 starts a linear movement in one direction and the pressure in the other pump cylinder chamber 10-b is relatively low, the fluid filled in the pressure buffer chamber 23 of the other cylinder head 20 'is lowered. Flows directly into the pump chamber 30 to compensate for the low pressure of the other pump cylinder chamber 10-b, and the fluid filled in one cylinder chamber 10-a of the linear movement direction of the pump piston 30 is discharge valve ( 22) by being easily discharged to one side pressure buffer room (23 ') having a relatively low pressure during discharge can greatly reduce the linear reciprocating motion of the pump piston 30 and the load of the drive motor 40 therefor.

As described above, according to the reciprocating pump using the drive motor of the present invention, the drive motor is coupled to the center of one side of the outer surface of the pump cylinder, and the rack gear and the pinion gear are formed to form a pump piston for one-way rotation of the drive motor. By allowing the smooth pumping operation to be performed while the linear reciprocating movement, it is possible to significantly reduce the size of the pump by reducing peripherals, such as a separate hydraulic device, as well as to reduce the cost of the product.

In addition, the pulsation is remarkably reduced during the movement of the reciprocating pump by inhaling and discharging the amount of fluid flowing into and out of the pump cylinders on both sides. By easily compensating for the difference in pressure, there is an effect that can significantly reduce the load caused by the operation of the reciprocating pump.

In addition, by coupling the spring between the upper and lower cylinder head and the both ends of the pump piston to compensate the inertial energy due to the one-way movement of the pump piston, the momentary load of the drive motor is significantly reduced, the smooth pumping effect can be performed There is.

Claims (4)

In a known reciprocating pump for transporting a liquid or gas through a pipe by the pressure action of the pump piston, A cylindrical pump cylinder 10 of constant size; The upper and lower cylinder heads 20 and 20 'are coupled to the upper and lower ends of the pump cylinder 10 so as to be sealed off, and the suction valves 21 and 21' and the discharge valves 22 and 22 'are formed at both sides, respectively. ); The pump piston 30 is installed inside the pump cylinder 10 to form a long hole 31 through the center, and the rack gears 32 and 32 'protrude from the upper and lower horizontal surfaces of the long hole 31. ; A driving motor 40 coupled to the center of one side of the outer surface of the pump cylinder 10 so that the outer front shaft 41 is positioned on the center line 31 of the long hole 31 of the pump piston 30; Is coupled to the rotation axis line of the drive motor 40 to be rotated in engagement with the rack gears (32, 32 '), the gear teeth 52 protruding within a certain angle on the rotation outer periphery of the gear body 51 Pinion gear 50; reciprocating pump using a drive motor, characterized in that consisting of. According to claim 1, wherein the rotation cam 53 is formed on one side on the rotation axis of the pinion gear 50, the rack cam (32, 32 ') side of the pump piston 30, the rotation cam (53) In response to the predetermined rotation space 33 is formed, the rotary cam 53 is in contact with the upper and lower ends (33a, 33b) of the rotation space 33 during rotation to force the pump piston 30 up and down Reciprocating pump using a drive motor, characterized in that formed to move a certain distance. 2. The drive motor according to claim 1, wherein a pressure buffer chamber (23, 23 ') of a predetermined space is formed outside the suction valve (21, 21') and the discharge valve (22, 22 '). Reciprocating pump used. The method of claim 1, wherein the upper and lower cylinder heads (20, 20 ') and the spring (60, 60') for maintaining a constant elastic force between the both ends of the pump piston 30 is characterized in that the coupling is installed Reciprocating pump using a drive motor.