KR101189914B1 - Valve for pump - Google Patents

Abstract

PURPOSE: A valve for a pump is provided to prevent the leakage of fluid by minimizing wear due to the repetitive vertical motions of an opening and closing ball. CONSTITUTION: A valve for a pump comprises a valve body(110), a valve housing(140), an opening and closing ball(130), and a guide part(120). The valve body provides a predetermined internal space and has at least one outflow hole. The valve housing is coupled to the valve body and has an inflow hole in which fluid flows. The opening and closing ball is arranged inside the internal space to open and close the inflow hole with external force. The guide part is inserted in the valve body to guide the opening and closing ball and prevent the wear of the valve body due to the opening and closing ball.

Description

Valve for pumps {Valve for pump}

The present invention relates to a valve for a pump, and more particularly to a valve for a pump to improve the performance by a constant injection amount of the fluid.

In general, the valve for the pump is a structure for fastening to the inlet or outlet of the pump to control the inflow of the fluid into or out of the pump.

Here, the valve for the pump can be applied to a pump of various fields, it is one of the very important factors that determine the performance and life of the pump.

In particular, the valves used in the water jet pumps used in textile weaving looms, that is, water jet looms, must be precisely and consistently opened and closed to control the fine injection amount of water, thereby maximizing the wear resistance of the valve itself. Should be.

On the other hand, the valve used in the conventional water jet loom water injection pump has a ball therein to implement the opening and closing of the inlet or outlet while moving back and forth passively by the action of the piston, such action is hundreds to thousands of times per minute Will be repeated.

Here, a large number of contacts are generated between the balls in the valve and the housing constituting the external appearance of the valves during a large number of opening and closing actions, thereby accompanying wear due to the contact.

Abrasion by contact can lead to leaks, which can result in a failure to maintain a constant amount of water sprayed.

This in turn entails replacing the valve every short time, thereby lowering the operating yield of the waterjet loom and increasing the cost burden in the weaving process.

Therefore, in the valve used for the pump for water jet looms, there is an urgent need to study to improve the performance and life of the water jet loom by maximizing wear resistance even when numerous openings and closings are made.

An object of the present invention is to minimize the amount of wear caused by the vertical movement of the opening and closing ball to prevent water leakage phenomenon to improve the spraying performance and life and at the same time assembling the temperature of the pump to maximize the convenience of assembly It is about.

A valve for a pump according to an embodiment of the present invention provides a predetermined internal space, the valve body having at least one outlet hole for allowing the fluid to flow out; A valve housing coupled to the valve body and having an inflow hole through which the fluid is introduced; An opening and closing ball disposed in the inner space to open and close the inflow hole by an external force; And a guide part inserted into the valve body to guide the opening and closing ball, and preventing wear of the valve body by the opening and closing ball, wherein the guide part is radially outward from an inner circumferential surface to provide a flow passage of the fluid. It may be provided with at least one flow portion is formed to be embedded and spaced apart in the circumferential direction.

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The guide part of the valve for a pump according to an embodiment of the present invention may be formed of a ceramic-based zirconium (Zrconium: Zr).

The valve housing of the valve for a pump according to an embodiment of the present invention is a fastening portion inserted into the valve body to be in contact with the inner surface of the valve body and a support portion extending from one side of the fastening portion disposed on the outside of the valve body It can be provided.

The fastening part of the valve for a pump according to an embodiment of the present invention includes an inner fastening part and an outer fastening part based on a thermal expansion compensating part formed therein, and the thermal expansion compensating part is at least one of the inner fastening part and the outer fastening part. It is possible to provide a space for compensating for thermal expansion due to the temperature change.

The thermal expansion compensation part of the valve for a pump according to an embodiment of the present invention may be formed spaced apart or continuously along the circumferential direction.

The valve housing of the valve for a pump according to an embodiment of the present invention may include acetal (Polyoxymethylene (POM)).

The outlet hole of the pump valve according to an embodiment of the present invention may include a central outlet hole formed in the center of the valve body and at least one peripheral outlet hole formed around the central outlet hole.

The pump valve according to an embodiment of the present invention may further include a shock absorbing part inserted into the central outlet hole to absorb the shock caused by the opening and closing ball.

The pump valve according to an embodiment of the present invention may further include a shock absorbing part inserted into at least one of the outlet holes to absorb the shock caused by the opening and closing ball.

The shock absorbing portion of the pump valve according to an embodiment of the present invention may have a communication hole in communication with the outlet hole.

According to the valve for a pump according to the present invention, by minimizing the wear and tear of the opening and closing ball by repeated vertical movement to prevent the leakage of the fluid in advance can maximize the injection performance and life.

In addition, it is possible to pursue the convenience of assembly by minimizing the influence of the ambient temperature when assembling the valve for the pump.

Further, it can be used semi-permanently by improving the material of the valve for the pump.

1 is a schematic cross-sectional view showing a pump including a valve for a pump according to an embodiment of the present invention.
Figure 2 is a schematic perspective view showing a valve for a pump according to an embodiment of the present invention.
Figure 3 is a schematic cutaway perspective view showing a valve for a pump according to an embodiment of the present invention.
Figure 4 is a schematic cross-sectional view showing a valve for a pump according to an embodiment of the present invention.
5A to 5D are schematic perspective views, schematic cutaway perspective views, schematic plan views, and schematic cross-sectional views showing a valve body provided in a valve for a pump according to an embodiment of the present invention.
6A and 6B are a schematic perspective view and a schematic plan view showing a guide portion provided in a valve for a pump according to an embodiment of the present invention.
7A-7D are schematic perspective views, schematic cutaway perspective views, schematic plan views, and schematic cross-sectional views illustrating a valve housing provided in a valve for a pump according to an embodiment of the present invention.
8A to 8D are schematic perspective views, schematic cutaway perspective views, schematic plan views, and schematic cross-sectional views showing a valve body provided in a valve for a pump according to another embodiment of the present invention.
9 is a schematic cross-sectional view showing a state in which fluid is introduced into a pump including a valve for a pump according to an embodiment of the present invention.
10 is a schematic cross-sectional view showing a state in which a fluid is leaked to a pump including a valve for a pump according to an embodiment of the present invention.

Hereinafter, with reference to the drawings will be described in detail a specific embodiment of the present invention. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventive concept. Other embodiments falling within the scope of the inventive concept may readily be suggested, but are also considered to be within the scope of the present invention.

The same reference numerals are used to designate the same components in the same reference numerals in the drawings of the embodiments.

1 is a schematic cross-sectional view showing a pump including a valve for a pump according to an embodiment of the present invention, Figure 2 is a schematic perspective view showing a valve for a pump according to an embodiment of the present invention.

3 is a schematic cutaway perspective view showing a valve for a pump according to an embodiment of the present invention, Figure 4 is a schematic cross-sectional view showing a valve for a pump according to an embodiment of the present invention.

1 to 4, a pump 10 including a pump valve 100 according to an embodiment of the present invention includes a pump housing 200 and a cylinder 300 accommodating the valve 100 for a pump. , The piston driving body 500 and a pump valve 100 for introducing or discharging the fluid W (see FIGS. 9 and 10) may be included.

First, when defining the term for the direction, the axial direction up or down direction refers to the direction from the central outlet hole 112 of the valve body 110 toward the valve housing 140 or the opposite direction as shown in FIG. The radially outward or inward direction may mean a direction from the central outlet hole 112 of the valve body 110 toward the peripheral outlet hole 114 or the opposite direction.

In addition, the circumferential direction may mean a direction of rotation along the curved side of the valve body (110).

The pump housing 200 may provide an appearance of the pump 10, and a pump valve 100 may be fastened to an upper side and a lower side of the pump housing 200 in the axial direction.

Here, the inflow of the fluid into the pump housing 200 and the outflow of the fluid to the outside may be implemented by the pump valve 100, the opening and closing of the pump valve 100 is in the cylinder 300 The piston 400 by the piston drive body 500 may be made by a reciprocating motion.

A detailed description thereof will be described later with reference to FIGS. 9 and 10.

The pump valve 100 includes a valve body 110 having at least one outlet hole 115, a guide part 120 and an opening / closing ball 130 disposed in an inner space of the valve body 110, and the valve. It may include a valve housing 140 fastened to the body 110 and having an inlet hole 142.

The valve body 110 may accommodate the opening / closing ball 130 and the guide part 120 by providing a predetermined internal space, and may include at least one outlet hole 115 to allow the fluid to flow out.

1 to 4, as well as FIGS. 5A to 5D, which show schematic perspective views, schematic cutaway views, schematic plan views, and schematic cross-sectional views of a valve body provided in a valve for a pump according to an embodiment of the present invention. This will be described.

The valve body 110 may have a generally cup shape having an axial lower portion open, and may have at least one outlet hole 115 to allow fluid to flow out on an upper surface thereof.

On the other hand, the outlet hole 115 may include a central outlet hole 112 formed in the center and at least one peripheral outlet hole 114 formed around the central outlet hole 112.

The outlet hole 115, that is, the central outlet hole 112 and the peripheral outlet hole 114 is not predetermined, it can be variously changed in accordance with the intention of those skilled in the art in consideration of the outflow amount of the fluid. Reveal it.

That is, in FIGS. 5A to 5D, the valve body 110 in which three peripheral outlet holes 114 are formed in one central outlet hole 112 is illustrated, but the size and number of the peripheral outlet holes 114 vary. It can be changed.

On the other hand, at least one of the outlet holes 115 may be inserted into the shock absorbing portion 150 to absorb the shock by the opening and closing ball 130, specifically, the shock absorbing portion 150 is the central outflow hole It can be inserted from the inside of 112.

Here, the shock absorbing unit 150 may be formed of a material having excellent durability and wear resistance.

In other words, in the conventional pump valve, the contact between the opening and closing ball and the upper inner surface of the valve body can be generated innumerably by the high speed up and down movement of the opening and closing ball. have.

However, the pump valve 100 according to an embodiment of the present invention prevents the above problems by inserting the shock absorbing part 150 into the contact portion between the opening and closing ball 130 and the valve body 110. can do.

Therefore, the pump valve 100 according to the embodiment of the present invention may maximize the wear resistance to maximize the injection performance and life by preventing the leakage of the fluid in advance.

On the other hand, the outlet hole 115, that is, the inner wall defining the central outlet hole 112 is formed to be stepped to more firmly fix the shock absorbing unit 150, the shock absorbing unit 150 is outside May not be exposed.

In addition, after the shock absorbing unit 150 is fixed by being inserted into the outlet hole 115, that is, the central outlet hole 112, the shock absorbing unit 150 is connected to the central outlet by the communication hole 152. In communication with the hole 112, the fluid can flow out.

The guide part 120 may be inserted into the internal space of the aforementioned valve body 110 to guide the opening / closing ball 130, and may prevent wear of the valve body 110 by the opening / closing ball 130. Can be.

Here, the opening and closing ball 130 may be arranged in the inner space to open and close the inlet hole 142 formed in the valve housing 140 by an external force, and up and down by the reciprocating motion of the piston 400 which is an external force. Can reciprocate.

In addition, the opening and closing ball 130 may be formed of a stainless material, but is not limited to this, any material that can open and close the inlet hole 142 may be applicable.

Meanwhile, referring to FIGS. 1 to 4 with respect to the guide part 120, FIGS. 6A and 6B show a schematic perspective view and a schematic plan view of a guide part provided in a pump valve according to an embodiment of the present invention. This will be described.

The guide part 120 may include at least one flow part 122 formed to be recessed radially outward from an inner circumferential surface to provide a flow passage of the fluid.

The flow part 122 may be formed to be spaced apart from each other in the circumferential direction, when the opening and closing ball 130 is disposed inside the guide portion 120 between the opening and closing ball 130 and the guide portion 120 A predetermined space may be formed to provide a passage through which the fluid can flow.

On the other hand, the size and number of the flow portion 122 is not predetermined, it may be variously changed according to the intention of those skilled in the art in consideration of the flow amount of the fluid.

Here, the guide portion 120 may be contacted innumerably during the vertical movement of the opening and closing ball 130, it may be formed of a ceramic-based zirconium (Zirconium: Zr) in order to minimize the wear caused by the contact.

Zirconium (Zrconium) (Zr) is a material excellent in corrosion resistance and durability, even if the contact between the opening and closing ball 130 and the guide portion 120 can be minimized wear of the guide portion 120 can realize a semi-permanent life.

On the other hand, when the guide portion 120 is inserted into the internal space of the valve body 110, the inner peripheral surface of the valve body 110 is formed stepped to implement a stable insertion of the guide portion 120, stepped dust The inner circumferential surface may perform a stopper function that serves as a locking jaw function of the guide part 120 insertion.

The valve housing 140 may be coupled to the valve body 110 and may include an inflow hole 142 to allow fluid to flow therein.

On the other hand, the valve housing 140, as well as Figures 1 to 4, showing a schematic perspective view, a schematic cut perspective view, a schematic plan view and a schematic cross-sectional view of the valve housing provided in the valve for a pump according to an embodiment of the present invention This will be described with reference to FIGS. 7A to 7D.

The valve housing 140 may be inserted and fastened from the lower side in the axial direction of the valve body 110, thereby preventing the outflow of the guide part 120 and the opening / closing ball 130 to the outside.

Here, the axial upper side surface of the valve housing 140 may have a seating surface 144 is formed to be inclined for the seating of the opening and closing ball 130, the opening and closing ball 130 on the seating surface (144) When it is seated, the inflow of fluid can be blocked.

On the other hand, the valve housing 140 extends from one side of the fastening part 147 and the fastening part 147 inserted into the valve body 110 to be in contact with the inner surface of the valve body 110 and the valve body ( The support part 149 may be disposed outside the 110.

In detail, the fastening part 147 may include an inner fastening part 145 and an outer fastening part 146 based on the thermal expansion compensation part 148 formed therein, and the valve housing 140 and the Direct coupling of the valve body 110 may be implemented by the outer fastening portion 146.

On the other hand, the thermal expansion compensation unit 148 may be a space for compensating for the thermal expansion according to the temperature change of at least one of the inner fastening portion 145 and the outer fastening portion 146, thereby the pump valve of the present invention (100) It is possible to maximize the ease of assembly by minimizing the influence of the ambient temperature during assembly.

In other words, the valve housing 140 may include polyoxymethylene (POM), which is a synthetic resin, and acetal (Polyoxymethylene: POM) may be thermally expanded or contracted depending on the ambient temperature.

Therefore, the valve housing 140 may have different degrees of expansion or contraction according to ambient temperature, that is, seasonality, and when the valve housing 140 is fastened to the valve body 110, problems of fastening may occur due to expansion or contraction. There is a possibility.

However, the valve housing 140 according to the present invention is a thermal expansion compensator 148 that is a space of thermal expansion according to a temperature change of at least one of the fastening part 147, that is, the inner fastening part 145 and the outer fastening part 146. Can solve the problem of fastening.

That is, when the outer fastening portion 146 is inserted into the valve body 110, even if the outer fastening portion 146 is thermally expanded than the predesigned dimension and somewhat larger in diameter, the thermally fastening portion 148 radially inwards. Since the space that can be elastically deformed is provided, it is possible to assemble more robust and simple.

Here, the thermal expansion compensation unit 148 may be continuously formed in the circumferential direction, but is not necessarily limited thereto, and a plurality of thermal expansion compensators 148 may be spaced apart from each other.

8A to 8D are schematic perspective views, schematic cutaway perspective views, schematic plan views, and schematic cross-sectional views showing a valve body provided in a valve for a pump according to another embodiment of the present invention.

8A to 8D, the valve body 110 ′ provided to the pump valve according to another embodiment of the present invention may include at least one outlet hole 115 ′, and the outlet hole ( 115 ′ may include a central outlet hole 112 ′ and a peripheral outlet hole 114 ′.

In detail, the peripheral outflow holes 114 'may be formed to be spaced apart from each other along the circumferential direction around the central outflow hole 112'.

The peripheral outflow hole 114 ′ may allow the fluid to flow out, and may be variously changed according to the intention of those skilled in the art in consideration of the outflow amount of the fluid as described above.

That is, in FIGS. 8A to 8D, the valve body 110 ′ in which six peripheral outlet holes 114 ′ are formed in one central outlet hole 112 ′ is illustrated, but the size and size of the peripheral outlet hole 114 ′ are shown. The number can vary.

9 is a schematic cross-sectional view illustrating a state in which fluid is introduced into a pump including a valve for a pump according to an embodiment of the present invention, and FIG. 10 is a pump including a valve for a pump according to an embodiment of the present invention. It is a schematic sectional drawing which shows the state which a fluid flows out.

The inflow of the fluid W into the pump housing 200 and the outflow of the fluid W to the outside may be implemented by the pump valve 100, the opening and closing of the pump valve 100 is a cylinder The piston 400 may be made by reciprocating the piston 400 by the piston drive body 500 therein.

First, referring to FIG. 9, when the piston 400 is moved backward by the piston drive body 500, the opening / closing ball 130 of the pump valve 100 positioned below the axial direction is raised and positioned above the axial direction. Opening and closing ball 130 of the valve 100 for the pump is lowered so that the fluid (W) can be filled in the pump housing 200 through the lower pipe (P1).

On the contrary, as shown in FIG. 10, when the piston 400 is advanced by the piston driving body 500, the opening / closing ball 130 of the pump valve 100 located in the axial direction is lifted up. The opening and closing ball 130 of the pump valve 100 located in the lower axial direction is lowered and the fluid (W) filled in the pump housing 200 may flow out of the upper pipe (P2).

That is, the above-described action is repeatedly implemented by the repetitive movement of the piston drive body 500, the textile weaving loom adopting the pump valve 100 according to the present invention, that is, the smooth weft of the water jet loom Supply can be realized.

In the above description of the configuration and features of the present invention based on the embodiment according to the present invention, the present invention is not limited thereto, and various changes or modifications can be made within the spirit and scope of the present invention. It will be apparent to those skilled in the art that such changes or modifications fall within the scope of the appended claims.

10: pump
100: valve for pump
110, 110 ': valve body
120: guide part
130: opening and closing ball
140: valve housing
150: shock absorbing part

Claims (12)

A valve body providing a predetermined internal space and having at least one outlet hole for allowing a fluid to flow out;
A valve housing coupled to the valve body and having an inflow hole through which the fluid is introduced;
An opening and closing ball disposed in the inner space to open and close the inflow hole by an external force; And
And a guide part inserted into the valve body to guide the opening and closing ball and preventing wear of the valve body by the opening and closing ball.
And the guide portion has at least one flow portion formed to be recessed radially outward from the inner circumferential surface and spaced apart in the circumferential direction to provide a flow passage of the fluid.
delete delete The method of claim 1,
The guide part is a pump valve formed of a ceramic-based zirconium (Zirconium: Zr).
The method of claim 1,
The valve housing has a fastening part inserted into the valve body to be in contact with the inner surface of the valve body and a pump portion having a support extending from one side of the fastening portion disposed on the outside of the valve body.
A valve body providing a predetermined internal space and having at least one outlet hole for allowing a fluid to flow out;
A valve housing coupled to the valve body and having an inflow hole through which the fluid is introduced;
An opening and closing ball disposed in the inner space to open and close the inflow hole by an external force; And
And a guide part inserted into the valve body to guide the opening and closing ball and preventing wear of the valve body by the opening and closing ball.
The valve housing has a fastening part inserted into the valve body to be in contact with the inner surface of the valve body and a support part extending from one side of the fastening part and disposed outside the valve body.
The fastening part includes an inner fastening part and an outer fastening part based on a thermal expansion compensating part that is formed to be embedded, and the thermal expansion compensating part provides a space for compensating for thermal expansion according to a temperature change of at least one of the inner fastening part and the outer fastening part. Valve for pumps.
The method according to claim 6,
The thermal expansion compensation unit is a valve for a pump is formed spaced apart or continuously in the circumferential direction.
The method of claim 1,
The valve housing is a valve for a pump containing acetal (Polyoxymethylene: POM).
The method of claim 1,
The outlet hole is a pump valve having a central outlet hole formed in the center of the valve body and at least one peripheral outlet hole formed around the central outlet hole.
10. The method of claim 9,
And a shock absorbing part inserted into the central outlet hole to absorb the shock caused by the opening and closing ball.
The method of claim 1,
And a shock absorbing part inserted into at least one of the outlet holes to absorb a shock caused by the opening and closing ball.
The method according to claim 10 or 11,
The shock absorbing portion is a pump valve having a communication hole in communication with the outlet hole.

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