JP5211399B2 - Float type drain trap and drain water discharge method - Google Patents

Description

  The present invention relates to a float drain trap and a drain water discharge method. More specifically, the valve seat connected to the discharge port is closed with a hard rubber at one end of the valve seat. A paramagnetic valve body that is integrally formed. The spring is in contact with the other end, and the valve body is pressed against the valve seat by overcoming the magnetic force. The other end of the spring is received by the spring receiver, and the spring receiver is non-magnetic. The valve case is fixed to the valve case, the valve case is fixed to the valve seat, and the valve body and the spring are housed in the valve seat, the valve case, and the spring receiver so as to operate smoothly. The valve seat is opened by positioning a float with an integrated permanent magnet inside the cover. The float swings around the swing center by the amount of drain water accumulated in the cover. The space between the magnet and the valve body to be attracted Or by using an indirect magnetic force that exerts a magnetic force on both sides of an object or both, that is, by using a spring force and an indirect magnetic force, the float and the valve body move in particular separately. In this way, the technique is described in which it is prevented from moving halfway open when drain water is finally discharged by preventing it from moving correspondingly.

  Conventionally, there has been a technique related to a drain water discharge method and a buoyancy type drain trap (see, for example, Patent Document 1).

  Here, a conventional drain water discharge method and a technique related to a buoyancy type drain trap will be described with reference to Patent Document 1.

In this case, Patent Document 1 includes a float body that can float with water at one end around the arm, a float that integrates a rubber valve seat at the other end and a rotating shaft at the center bending portion, and A case main body formed with an inflow port through which drain water flows in, an outflow port through which drain water flows out, a valve seat positioned at the outflow port, and a float bracket that allows the float to rotate by holding the rotating shaft; If the drain shaft does not flow up to a certain position of the case by the rotation shaft being positioned in the float bracket inside the case, the weight of the float When the rubber valve seat closes the valve seat and the drain water wants to flow to a certain position of the case or more, the rubber valve seat opens the valve seat by the buoyancy of the float body. In the drain trap, a magnet is disposed at any location between the float body and the rotating shaft of the arm, and an attraction force is generated by the magnet at any location inside the case. A technology in which the rubber valve seat closes and opens the valve seat in accordance with the relationship between the weight of the float, the buoyancy, the suction force, and the moments generated by the mating member to be disposed. It is shown.
JP 2005-180677 A

  However, the conventional drain water discharge method and the float drain trap technique have the following problems.

  First, in a drain trap that uses a direct magnetic force method that generates an attractive force by directly attracting a magnet and a mating member, a strong magnetic force is generated when attracted. The magnetic force attenuates in inverse proportion. In particular, there was a problem that a stable magnetic force could not be obtained due to the adhesion of foreign matters such as dust and variations including dimensional errors.

  Next, since the rubber valve seat is integrated with the float and is operated correspondingly, the opening degree of the valve seat is determined by the position of the water surface through the float. Accordingly, there are many cases where the potopot and water droplets are continuously discharged at an equilibrium point where the inflow and discharge of the drain water coincide. Furthermore, since the magnetic force is attenuated in inverse proportion to the square of the distance, if the distance is even a little, the magnetic force tends to be outside the influence range of the magnetic force, and an equilibrium point is easily generated. As a result, drain water cannot be discharged vigorously due to intermittent drainage, and it has become difficult to remove slime and dust adhering to the small holes in the valve seat.

  Furthermore, since the valve itself is swinging, it is difficult to adhere to the valve seat. As a countermeasure, if soft rubber is used for the valve, the range where the equilibrium point is generated becomes larger, and intermittent drainage cannot be performed. Was encouraged.

The present invention accepts a gas-liquid mixture of compressed air and drain water generated from the compressed air from an inlet at the top of the cover, separates the drain water from the gas-liquid mixture, and drains from a discharge port provided at the bottom of the side wall. In a float drain trap that discharges water, the valve seat connected to the discharge port is closed by a paramagnetic valve body integrally formed with hard rubber at one end on the valve seat side. , The valve body is pressed against the valve seat by the force of a spring in contact with the other end, and the other end of the spring is received by a spring receiver, and the spring receiver is fixed to a non-magnetic valve case, The valve case is fixed to the valve seat, and the valve body and the spring are constituted by a cartridge-type valve body that is housed so as to operate smoothly inside the valve seat, the valve case, and the spring receiver, The valve seat is opened inside the cover. A float that is integrally formed with a permanent magnet is positioned, and the valve that is the attracted body and the permanent magnet while the float oscillates around the oscillation center according to the amount of drain water accumulated in the cover. It is characterized by using an indirect magnetic force that acts on the space between the body and / or the object or both, and further, the permanent magnet, when the float is at the bottom, When the float is at the uppermost position, it is positioned in the vicinity of the center line with respect to the valve body, so that the suction by the magnetic force is in the process of increasing so that the suction by the magnetic force is small by being positioned at right angles to the valve body. In the case where the float is at the top, the suction force by the magnetic force between the permanent magnet and the valve body is the portion where the force of the spring and the drain water of the valve seat pass. The valve seat is opened by being larger than the sum of the forces applied to the area portion. Further, in the case where the spring receiver is also a paramagnetic body, the valve body and the spring receiver are attracted by a magnetic force. It is characterized in that it is confirmed that the attractive force by the magnetic force is also large, and further, the case where the float is at the top is when the float reaches a stopper formed at the upper part inside the cover. Further, the swing center is on a bracket that is integrally located on an upper outer periphery of the valve case constituting the valve body, and the bracket is non-magnetic. Furthermore, the float is formed by integrally forming a float body, two supports, the two permanent magnets positioned on the support, and a shaft positioned at the swing center of the bracket. The two permanent magnets swing in a state of being sandwiched between the valve body and symmetrical with respect to the center line of the valve body, and the float has a specific gravity of 0. .80 to 0.95, which corresponds to the change of drain water in a floating state, and when the drain water decreases at the position of the stopper, it is dropped by its own weight, The water surface in the cover when the float is at the lowermost part is positioned above the discharge port, and further, the valve case has a lower part of the contact surface between the valve seat and the valve body. A hole from the outer peripheral bottom is formed in the valve seat or the portion where the valve body is not located in order to prevent any discharge of compressed air, and the valve body further includes the valve Supply drain water so that the body can operate smoothly Therefore, a straight groove or grooves that are V-shaped in parallel with the shaft are formed at the bottom of the groove, and a hole is provided between the spring housing portion that receives the spring and the groove at the bottom. Further, the above-mentioned problems are solved by using a neodymium magnet having a strong magnetic force as the permanent magnet.

In addition, the present invention accepts a gas-liquid mixture of compressed air and drain water generated from the compressed air from the inlet at the upper part of the cover, and separates the drain water from the gas-liquid mixture from an outlet provided at the lower part of the side wall. In the drain water discharging method for discharging drain water, a permanent magnet integrated with the float is swung according to rocking of the float due to the amount of drain water accumulated in the cover, and a valve element is driven by a spring force. closed by a pressed to overcome the magnetic force on the valve seat, indirect magnetic force exerting a magnetic force across a space or an object, or both between the valve body of the permanent magnets and the attractant paramagnetic Accordingly, the said valve seat that is connected to the outlet opening by the movement by the suction of the valve body, characterized by discharging intermittently drain water, further, the permanent magnet, the float top At the bottom Is located at a right angle to the valve body, so that the suction by the magnetic force is the smallest, and when the float is at the top, the suction by the magnetic force is increased by positioning the valve body near the center line. Further, the attraction is the largest, and the attraction by the magnetic force of the spring receiver of the paramagnetic material receiving the valve body and the spring is added. By the same swing angle in the process of rising or lowering, the valve seat and the valve body are brought into close contact when rising, and the valve seat and the valve body are necessarily opened when descending, The above problem has been solved.

  As is clear from the above description, the present invention can provide the following effects.

  First, a gas-liquid mixture of compressed air and drain water generated from the compressed air is received from the inlet at the top of the cover, and drain water is separated from the gas-liquid mixture and drained from an outlet provided at the bottom of the side wall. In a float drain trap that discharges water, the valve seat connected to the discharge port is closed by a paramagnetic valve body that is integrally formed with hard rubber at one end on the valve seat side. The valve element is overcome and pressed against the valve seat by the force of the spring in contact with the end, the other end of the spring is received by the spring receiver, the spring receiver is fixed to the non-magnetic valve case, and the valve case is fixed to the valve seat The valve body and spring are housed in a cartridge-type valve body that is housed in the valve seat, valve case, and spring receiver so that they operate smoothly. The valve seat is opened by a permanent magnet inside the cover. The float is made up of a single piece, and the float is covered. Indirectly causing the magnetic force to act by sandwiching the space between the permanent magnet and the valve body that is the attracted body, or the object, or both, while swinging around the swing center depending on the amount of drain water accumulated in the By using the magnetic force, that is, by using the force of the spring and the indirect magnetic force, especially by preventing the float and the valve body from moving together, It has become possible to prevent a half-open state when discharged.

  Secondly, when the float is at the bottom, the permanent magnet is positioned at a right angle to the valve body so that the magnetic attraction is small. By positioning it in the vicinity, the attraction by the magnetic force is the largest in the process of ascending, and when the float is at the top, the attraction force by the magnetic force of the permanent magnet and the valve body is the force by the spring and the valve It is important to open the valve seat by making it larger than the sum of the forces applied to the cross-sectional area of the portion where the drain water of the seat passes, that is, it is important to use different changes in the acting force due to indirect magnetic force when the float swings Thus, the drain force can be formed by completely configuring the force applied to the cross-sectional area of the portion through which the drain water of the valve seat and the acting force due to the indirect magnetic force changing with the spring force are completely independent. Water is Preventing half-open when issued, it became even cope with variations including adhesion and dimensional errors of the foreign matter such as dust.

  Third, if the spring receiver is also a paramagnetic material, the attractive force by the magnetic force of the valve body and the spring receiver is also large as the attractive force by the magnetic force, so even if the same permanent magnet is used, the attractive force by the magnetic force The force (that is, the force for opening and closing the valve seat) can be made stronger.

  Fourth, the case where the float is at the top is when the float reaches the stopper formed at the upper part inside the cover. The state of the permanent magnet when the float reaches the stopper by the swinging force (permanent magnet) (It is effective to be parallel to the valve body as much as possible) so that the maximum attraction force by the magnet is sufficiently secured so that there is no shortage of moment when the float falls. This is a consideration and ensures that the float moves to a lowering action in terms of position.

  Fifth, the center of oscillation is on a bracket that is located integrally with the upper outer periphery of the valve case that constitutes the valve body, and the bracket is non-magnetic, so that the permanent magnet and the valve body By securing a non-magnetic part called a valve case in between, it is possible to use an attractive force by an indirect magnetic force.

  Sixth, the float is formed by integrally forming the float body, the two supports and the two permanent magnets located on the support, and the shaft located at the pivot center of the bracket. By positioning and swinging with the valve body sandwiched and symmetrical with respect to the center line of the valve body, a non-magnetic part called a valve case is secured between the permanent magnet and the valve body. The structure enables the use of an attractive force due to a magnetic force and allows the change in the acting force due to an indirect magnetic force to be used separately.

  Seventh, the float has a specific gravity of 0.80 to 0.95 and responds to changes in the drain water when it floats. If the drain water decreases at the position of the stopper, it will fall by its own weight. By securing the buoyancy and weight of the stopper, it is expected that the float will rise and fall, and the positional relationship between the permanent magnet and the valve body, while paying sufficient attention to the specific gravity for floating and the weight for dropping. The operation can be performed without any problem.

  Eighth, since the water surface in the cover when the float is at the bottom is positioned above the discharge port, it has become possible to reliably prevent wasteful discharge of compressed air from the discharge port. is there.

  Ninth, in the part of the valve case where the valve seat or valve body below the contact surface between the valve seat and the valve body is not located, in order to prevent any discharge of compressed air, sticking or the like is prevented and the outer peripheral bottom As a result, the wasteful discharge of compressed air from the discharge port can be almost certainly prevented.

  Tenth, in order to supply drain water so that the valve body can be operated smoothly, the valve body is formed with a linear groove or grooves cut in a V shape parallel to the shaft at the bottom. Since the hole is provided between the spring housing portion for receiving the spring and the groove at the bottom, the operation of the valve body in the valve case becomes smooth.

Eleventh, since the permanent magnet is a neodymium magnet having a strong magnetic force, the use of an attractive force by an indirect magnetic force is made more reliable.

  The figure which showed the whole drain trap of this invention   The figure which showed the valve body of the present invention   The figure which located the bracket with the cap on the valve body of the present invention   Sectional view when the bracket is positioned on the valve body of the present invention   Plan view when the float is positioned on the valve body of the present invention   The figure which showed the positional relationship with the water surface at the time of positioning the float in the valve main body of this invention   Operational diagram of the valve body when the float of the present invention is rising   Operational diagram of the valve body when the float of the present invention is descending   The figure which showed the condition where the float of the present invention reached the top   Diagram showing the relationship between magnetic force and distance   Diagram showing the positional relationship of the permanent magnet moving by swinging with the valve body   Diagram showing the relationship between rocking angle and acting force   The figure which showed the positional relationship of the permanent magnet which is moving by swinging with a valve body and a spring holder   Diagram showing the relationship of force acting on the valve

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
Here, FIG. 1 is a diagram showing the entire drain trap of the present invention, FIG. 2 is a diagram showing the valve body of the present invention, and FIG. 3 is a diagram showing a bracket with a cap on the valve body of the present invention. FIG. 4 is a sectional view when the bracket is positioned on the valve body of the present invention, and FIG. 5 is a plan view when the float is positioned on the valve body of the present invention. 6 is a view showing the positional relationship with the water surface when the float is positioned on the valve body of the present invention, and FIG. 7 is a view of the valve body when the float of the present invention is rising. FIG. 8 is an operation diagram of the valve main body when the float of the present invention is descending, and FIG. 9 is a diagram showing a situation where the float of the present invention has reached the top. FIG. 10 is a diagram showing the relationship between magnetic force and distance, and FIG. FIG. 12 is a diagram showing the relationship between the swing angle and the acting force, and FIG. 13 is a diagram showing that the valve body and the spring receiver are swung. FIG. 14 is a diagram showing the relationship of the force acting on the valve element.

  Here, as shown in FIG. 1, 1 is a drain trap, and a substantially spherical cover 10 storing drain water together with compressed air and a permanent magnet 23 are integrally formed and stored inside. The float 20 moves up and down by swinging around the swing center 70a in accordance with the increase or decrease of the drain water, the valve seat 51 for flowing drain water, the valve body 52 for opening and closing the valve seat 51, the spring 53, and the like. The valve main body 50 of the cartridge, the bracket 70 which is located on the outer periphery of the valve main body 50 and forms the swing center 70a of the float 20, and the cap 60 which fixes the bracket 70 to the valve main body 50 are integrally configured. doing.

  In this case, the cover 10 is integrally formed in a spherical shape or a shape close thereto by a substantially hemispherical first cover 11 and second cover 12, an O-ring 13, a bolt or the like not specifically shown. . Then, an inflow port 10a formed in the vicinity of the uppermost portion of the cover 10, a discharge port 10b formed in the lower side of the side wall relatively near the bottom, and an air piping port 10c formed in the upper portion are provided. Except for this, the O-ring 13 is completely sealed so that drain water does not leak. The O-ring 13 may be a packing or a liquid packing.

  And the gas-liquid mixed fluid of compressed air and drain water flows in from the inflow port 10a. Moreover, the drain water isolate | separated is discharged | emitted from the discharge port 10b. Further, in this type of closed cover 10, when a large amount of drain water suddenly flows, an air lock is caused at the inlet 10a, and the drain water does not flow. Note that the drain water in the cover 10 is not intermittently discharged unless air is accumulated inside the cover 10. Therefore, in order to prevent these problems, the air piping port 10c (referred to as a pressure equalizing pipe) can be connected to a compressed air tank storing compressed air or a compressed air pipe passing compressed air. Is also provided. On the other hand, when there is no air piping port 10c or when it is not used, a compressed air introduction tool (not specifically shown) that is a pipe having a smaller diameter than the inlet 10a is inserted using the inlet 10a. Connecting the inside of the cover 10 with compressed air such as a compressed air tank, a filter, or a dryer can be considered as another method.

  As shown in FIG. 2, the valve body 50 includes a valve seat 51 connected to the discharge port 10b by forming a small hole 51a, and the valve seat 51 is opened and closed and sealed to the contact surface of the valve seat 51. A hard rubber 52x for ensuring safety, and a valve body 52 made of a paramagnetic material magnetized in the same direction as the magnetic field; a spring 53 for pressing the valve body 52 against the valve seat 51; The spring seat 54 receiving the other end of the spring 53, and the valve body 52 and the spring 53 housed inside the spring seat 54 are individually integrated with both the valve seat 51 and the spring receiver 54 by screwing. A valve case 55 made of a nonmagnetic material and an O-ring 56 for preventing drain water from leaking when the valve body 50 is attached to the cover 10 are integrally configured as a cartridge. Therefore, the permanent magnet 23 and the paramagnetic valve body 52 which are a part of the float 20 are always located via the nonmagnetic valve case 55.

  The valve body 52 is integrally formed with a hard rubber 52x on the valve seat 51 side, and at the same time receives a spring 53 at the other end with respect to the side where the hard rubber 52x is located. A hole 52a is formed in which a spring accommodating portion 52c having a concave shape is formed, and the spring accommodating portion 52c communicates with the lower portion of the outer periphery of the valve body 52 so that the valve body 52 operates smoothly inside the valve case 55. In addition, by forming one or a plurality of grooves 52b having a V-cut shape parallel to the central axis at the lower part of the outer periphery of the valve body 52, the drain water can easily enter and exit the spring accommodating portion 52c. Also, care is taken to prevent sticking. In this case, the valve body 52 is a paramagnetic body, and an indirect magnetic force is generated between the float 20 and the permanent magnet 23 described later, and this force is used to move the valve body 52 ( That is, it can be said that the technical point of the present invention is that the valve seat 51 is used for opening and closing.

  Further, the spring receiver 54 is formed with a spring accommodating portion 54a having a concave shape at an end portion for receiving the spring 53, and is used for a screwdriver used for screwing on the other side where the spring accommodating portion 54a is located. A groove 54c is formed. Also in this case, the spring receiver 54 is a paramagnetic body, and generates a magnetic force between the valve body 52 and adds the force to the magnetic force between the valve body 52 and the permanent magnet 23 to move the valve body 52. Is helping. However, the spring bearing 54 may be non-magnetic.

  Further, the valve case 55 is a circular tube having a stepped portion 55b for positioning the bracket 70 on the outer periphery, and a portion where the valve seat 51 and the valve body 52 below the contact surface of the valve seat 51 and the valve body 52 are not located. A hole 55a from the bottom of the outer periphery is formed. The purpose of the hole 55a is provided so that the drain water can be smoothly fed into the small hole 51a of the valve seat 51. By the pressure of the compressed air together with the drain water discharged at the same time. This is done so that the compressed air is not discharged until the water surface to be pushed down is below the hole 55a. As shown in FIG. 6, the lowermost water surface in the cover 10 when the float 20 is at the lowermost position is connected to the discharge port 10b (the valve main body 50 is connected to the discharge port 10b as apparent in FIG. 1). It is positioned at the top). For the valve case 55, it is particularly important to use a nonmagnetic material such as copper or aluminum in order to generate an indirect magnetic force between the permanent magnet 23, the valve body 52, and the spring receiver 54. is there.

  That is, since the valve case 55 is made of a non-magnetic material, and the valve case 55 exists between the permanent magnet 23 and the paramagnetic valve body 52, an indirect magnetic force sandwiching both the space and the object. However, the valve seat 51 is opened and closed by pulling or pulling the valve body 52 away. In this case, although it is exceptional, if a window is opened in a portion where the valve body 52 of the valve case 55 faces the permanent magnet 23, it can be said that the space is just through drain water. It can be said that when the valve case 55 is in close contact, an indirect magnetic force sandwiching only the object is generated. Therefore, it can be said that an indirect magnetic force is generated by sandwiching the space between the permanent magnet 23 and the valve body 52, the object, or both.

  A non-magnetic valve case 55 exists between the permanent magnet 23 and the paramagnetic valve body 52 as the attracted body, and a gap by the valve case 55 is always secured. . In this case, as shown in FIG. 10, even if the magnetic force (generated force) attenuates in inverse proportion to the square of the distance, the reduction does not drastically decrease with respect to the change in the distance, and the generated force is reduced slightly. There is only a part. That is, it is clear that the reduction in generated force shows a considerably small value when looking at a distance of, for example, about 1 mm or 1.5 mm after the reduction has dropped sharply. This side is also effectively used when it is related to the valve case 55 that is going to be used.

  Further, as shown in FIGS. 2, 3, 4, and 6, the valve case 55 is formed with a step portion 55b on the outer periphery on the spring support 54 side to generate an indirect magnetic force. Therefore, the permanent magnet 23 located at any place of the support 22 that is a part of the float 20 is located in the immediate vicinity of the valve body 52 and at the side or the diagonally upper part. The placket 70 is fixed with the cap 60 in consideration of the above. The material of the cap 60 may be a non-magnetic material, but if the spring receiver 54 is a paramagnetic material, the cap 60 may also be a paramagnetic material. In this case, the permanent magnet 23 that is a part of the float 20, the valve body 52 that is a part of the valve body 50, and the spring receiver 54 are connected by the shaft 24 that is a part of the float 20, and the float 20 is centered on the shaft 24. However, the permanent magnet 23 swings at the same time. The cap 60 and the valve body 52 may be fixed by screwing, but other methods may be used.

  Although the float 20 and the valve body 52 which is a part of the valve body 50 are integrated as described above, the conventional float 20 and the valve body 52 may be swingable through the shaft 24. Thus, when the float 20 moves, the valve body 52 does not always move correspondingly. As shown in FIGS. 7 and 8, the same fluctuation in the process of raising or lowering the float 20 is observed. The valve seat 51 and the valve body 52 are brought into close contact with each other at the time of ascent and the valve seat 51 and the valve body 52 are opened at the time of descending even if the moving angle α is (that is, the float 20 is located at the same height). May behave differently.

  That is, as can be seen in FIGS. 1 to 6, the non-magnetic part of the valve case 55 constituting the valve body 50 is located on the outer periphery of the step portion 55 b formed on the outer periphery on the spring receiver 54 side. The shaft 24 which is a part of the float 20 is located at the swing center 70 a of the bracket 70 made of the above material (for example, made of plastic), and connects the valve body 50 and the float 20. In addition, by placing the middle of the two sets of supports 22 of the shaft 24 positioned at the swing center 70a as close to the center of the cover 10 as possible, the swing angle of the float 20 is increased and the whole is reduced. Is made possible. Further, the swing center 70a is not necessarily installed on the bracket 70 via the valve body 50, and the valve body 50 and the float 20 may be separated from each other by fixing the bracket 70 directly to the inside of the cover 10. Conceivable.

  In this case, the float 20 is composed of a float body 21, two sets of supports 22, and two rod-like permanents located at any position of the support 22 (generally, the opposite side of the float body 21 is desirable). The magnet 23, the two pairs of supports 22, and the shaft 24 that integrally connects the bracket 70, and the two permanent magnets 23 sandwich the valve body 50. As a whole, the line is symmetrical with respect to a line (a center line of the valve main body 50).

  Therefore, as shown in FIG. 6, the float 20 is centered on the swing center 70 a of the bracket 70 positioned in a state of being fixed to the upper outer periphery of the valve case 55 that is a part of the valve body 50, that is, the same. It can swing according to the amount of drain water accumulated in the cover 10 around the shaft 24 located at the place. The material of the float main body 21 and the support 22 needs to be a non-magnetic material, but it can be considered to be made of plastics in consideration of lightening, etc. If some consideration is given to lightening, a light metal such as aluminum may be used.

  By the way, in the present invention, two permanent magnets 23 integrated with the float 20 sandwich the valve body 52 therebetween, and the position of the permanent magnet 23 is changed by the swing of the float 20, and the position is changed to be permanent. The attraction force generated by the indirect magnetic force between the magnet 23 and the valve body 52 is sometimes attempted to use the attraction force of the valve body 52 and the spring receiver 54. Therefore, the valve body 52 and sometimes the spring receiver 54 are made of a paramagnetic material that is magnetized in the same direction as the magnetic field. The permanent magnet 23 is positioned at a right angle to the valve body 50 when the float 20 is at the lowermost position, so that the attraction by magnetic force is the smallest, and when the float 20 is at the uppermost position, the permanent magnet 23 is positioned. The end portion (N pole or S pole) is positioned in the vicinity of the center line of the valve body 50 so that the suction by the magnetic force is embedded in the support 22 so that the suction is the largest in the process of rising.

As a method for embedding the permanent magnet 23, a method of attaching an adhesive to the bottom of the hole of the support 22, a method of machining a hole having the same diameter on the opposite side of the hole, and attaching a paramagnetic steel plate to the embedded magnet. For example, a method of setting a screw hole in the center of the hole, sinking a paramagnetic steel bolt, and attaching it to the permanent magnet 23 can be considered. In this case, the material of the permanent magnet 23 may be a neodymium magnet having a strong magnetic force.

  Here, as seen in FIG. 6, when the float 20 is located on the lowermost water surface, the float 20 is also located at the lowermost part, and is perpendicular to the permanent magnet 23 and the valve body 52 that is a part of the valve body 50. The float 20 is also located at the top when positioned at the uppermost part of the water surface so that the attraction by the magnetic force is small so that the permanent magnet 23 is a part of the valve body 50. On the other hand, by being positioned in the vicinity of the center line, the attraction by the magnetic force is maximized in the process of ascending, and the magnetic force between the permanent magnet 23 and the valve body 52 when the float 20 is at the top (sometimes the valve) The valve seat 51 is obtained by the fact that the attraction force by the magnetic force of the body 52 and the spring receiver 54 is greater than the sum of the force of the spring 53 and the force applied to the cross-sectional area of the portion of the valve seat 51 through which drain water passes. Is released.

  Therefore, the float 20 needs to rise and fall while floating on the water surface, and further, the float 20 falls from a position of the stopper 10x which is the uppermost part due to a moment to rotate about the swing center 70a. Since the weight needs to be secured, 0.80 to 0.95 is the best value as the specific gravity. For that purpose, the float 20 is made of polypropylene resin, made of low-foam general resin, or light metal with a specific gravity of two or more, such as aluminum, or a hole to make it hollow. It is possible to cover the hole after dawn.

  Further, the float 20 is located at the uppermost position by abutting against a stopper 10x formed at the upper part inside the cover 10 as shown in FIG. In addition to this, the objective of the stopper 10x is one surface where the moment between the swing center 70a of the float 20 and the center of gravity is sufficient for the float 20 located at the uppermost part to descend. It can be said that there is also. That is, it is a necessary condition for the float 20 to fall due to the inertial force due to its own weight when it is positioned at the top, and there is a slight contradiction that a certain amount of weight is secured in addition to floating. It can be said that it is necessary to determine the position of the stopper 10x so that the horizontal distance d between the swing center and the center of gravity of the float becomes large under the weight W of the float while satisfying the conditions.

  The float drain trap and drain water discharge method according to the present invention is configured as described above, and its operation will be described below.

First, among the configurations described so far, the general idea that forms the basis of the present invention is based on the basic permanent magnet 23, the valve seat 51, the valve body 52, the spring 53, the spring receiver 54, and the float 20. To state.
Here, FIG. 10 is a graph showing the relationship between magnetic force and distance.
In general, the mathematical formula shown in [Equation 1] is transmitted as the force that generates magnetic force.

但し、Ｆ ：磁力が発生する力
κ ：常数
ｍ ：磁石が発生する磁力
ｍ‘：磁石により励起された常磁性体の磁力
ｒ ：磁石の距離

F: Force that generates magnetic force
κ: Constant
m: Magnetic force generated by the magnet
m ′: Magnetic force of a paramagnetic material excited by a magnet
r: Magnet distance

  In this case, FIG. 10 is obtained by the mathematical formula [Equation 1]. FIG. 10 shows the relationship between the distance and the force when the generated force is 1 = 1 grf when the distance is r = 1 mm. As a matter of course, it can be said that the magnetic force is abruptly reduced (up to about 1 mm) from the permanent magnet 23 a little. Therefore, in the present invention, by setting the distance between the permanent magnet 23 and the valve body 52 to about 1 mm for the drain trap 1 having an outer diameter of about 100 mm, that is, the reduction rate is greatly reduced. By using a portion with a relatively low reduction rate, even if there is a slight change in distance, the generated force is not changed greatly.

  By the way, FIG. 11 is a diagram showing the positional relationship between the valve body 52 and the permanent magnet 23 that is moving by swinging. However, the N pole of the permanent magnet 23 and the S of the valve body 52 are described. Acting force generated between the poles (attraction force by magnetic force): F1 and acting force generated between the S pole of the permanent magnet 23 and the N pole of the valve body 52 (attraction force by magnetic force): F2 The result of the total acting force (attraction force by magnetic force) obtained by FIG. 10 based on the distance for each moving angle and the obtained acting forces F1 and F2 is shown by the solid line in FIG. In this case, in FIG. 12, the graph is drawn with the meaning of the acting force serving as a reference as a total value of the swing angle of 0 degrees so as to facilitate comparison in the following with the meaning of 100%.

  Further, as shown in FIG. 11, when the spring force F3 by the spring 53 is taken into consideration, the spring force works in the direction to cancel the acting force (attraction force) by the magnet, and the force corresponding to the spring force is based on the above-mentioned reference. Assuming that the acting force is 20%, the lower dotted line curve is obtained by subtracting 20% from the curve shown by the upper solid line in FIG. As a result, the magnetic force is won and the valve body 52 is moved to the right (opening the valve seat 51) between 0 degrees and 30 degrees with the swing angle of 30 degrees as a boundary. On the other hand, between 30 degrees and 90 degrees, the spring force is won and the valve body 52 is moved to the left (the valve seat 51 is closed). Naturally, for example, if the assumed numerical value including the spring force is changed, it is quite possible that another development will be seen, and there will be some change in the numerical value, but the basic idea And the effect does not change.

  On the other hand, when the spring receiver 54 is also a paramagnetic material, it is necessary to consider the acting force (attraction force by magnetic force) acting between the spring receiver 54 and the valve body 52 as shown in FIG. As a matter of course, whether the spring receiver 54 and the valve body 52 are in close contact or separated from each other greatly affects the acting force. In general, as is apparent from FIGS. 11 and 12, if the swing angle is small (the permanent magnet 23 is in a state where the permanent magnet 23 is positioned near the center line with respect to the valve body 52). The applied force increases, and the valve body 52 is moved and the valve seat 51 is opened. On the other hand, if the swing angle is large (if the permanent magnet 23 and the valve body 52 are at right angles), almost no acting force is generated.

  By the way, between the spring receiver 54 and the valve body 52, it can be said that the acting force greatly influences if they are in close contact, and if they are separated from each other, there is almost no influence. Opening the valve seat 51 means that the spring receiver 54 and the valve body 52 are in close contact with each other, and the acting force between the spring receiver 54 and the valve body 52 also has a great influence. In addition, considering the time immediately before the valve seat 51 is opened (when the float 20 is raised) and the time immediately after the valve seat 51 is opened (when the float 20 is turned down), the time until the last opening is as follows. Although it is instantaneous, it can be said that it will last for a relatively long time from the situation that drain water is discharged immediately after opening.

  As a result, the acting force between the permanent magnet 23 and the valve element 52 is assumed assuming that the acting force (attraction force by magnetic force) between the spring receiver 54 and the valve element 52 is 15% of the reference acting force at the maximum. FIG. 14 is a graph summarizing the spring force and the acting force between the spring receiver 54 and the valve body 52 (attraction force by magnetic force). In addition to the acting force (attraction by magnetic force) shown here, the valve body 52 must take into account the pressure applied to the cross-sectional area of the small hole 51a forming the valve seat 51. It does not correspond to.

  In this case, considering the graph of FIG. 14 with reference to FIG. 7 and FIG. 8, the graph above the opening direction shows the situation where the float 20 is descending in the direction of increasing the swing angle, and below the closing direction. This graph shows a situation where the float 20 is rising in the direction of decreasing the swing angle. The swing angle is 0 degree, the float 20 is at the top, the swing angle is 90 degrees, and the float 20 is at the bottom. Will be located. In particular, it is apparent from the graph of FIG. 14 that the valve seat 51 and the valve body 52 are brought into close contact with each other at the same swing angle α in the process in which the float 20 is raised or lowered, and the valve seat 51 and the valve body 52 are lowered when lowered. It can be seen that there is always a case of opening (for example, the situation shown in FIGS. 7 and 8).

  Moreover, what can be said from the graph of FIG. 14 is that the drain seat increases (the float 20 rises), and the valve seat 51 starts to open when the swing angle reaches about 30 degrees. Therefore, it is necessary to install the stopper 10x between 0 degrees and 30 degrees, but the installation is not absolutely necessary, and it is conceivable not to install the stopper 10x. Furthermore, the valve seat 51 starts to close when the swing angle reaches about 40 degrees while the drain water is decreasing (the float 20 is lowered). However, since specific numerical values are also set based on assumptions, it can be considered that they will be different values. Further, in the general idea so far, in the graphs of FIG. 12 and FIG. 14, the swing angle is shown between 0 degrees and 90 degrees, but as seen in the stopper 10x of FIG. It does not always swing between 0 and 90 degrees.

  Here, using FIG. 1 to FIG. 9 again, it will be specifically described by the swing of the float 20 and the movement of the valve body 52. When a gas-liquid mixture of compressed air and drain water generated from the compressed air flows in from the inlet 10a in a situation where the valve body 52 is closed by the force of the spring 53 that pushes the valve body 52 into the cover 51, the inside of the cover 10 The drain water increases and the float 20 starts to rise. As a matter of course, the drain water is not discharged from the discharge port 10b.

  At this stage, the drain water is fed into the spring accommodating portion 52c inside the valve body 52 via the hole 55a of the valve case 55, the groove 52b of the valve body 52, and the hole 52a of the valve body 52. The valve body 52 is helped to operate smoothly.

  As shown in FIG. 7, the float 20 rises while the valve seat 51 is closed by the valve body 52 while the drain water continues to flow from the inlet 10 a. As a matter of course, a gap D between the valve body and the spring receiver is secured.

  Further, the water surface of the drain water as shown in FIG. 9 is also at the highest position and the float 20 is located at the highest position, that is, at the place where the float 20 hits the stopper 10x. 23 and the valve body 52 are attracted by the magnetic force greater than the sum of the force of the spring 53 and the force applied to the cross-sectional area of the portion of the valve seat 51 through which drain water passes, thereby opening the valve seat 51 and In the case where 54 is also a paramagnetic material, the valve seat 51 is opened by confirming that the attractive force due to the magnetic force between the valve body 52 and the spring receiver 54 is also large as the attractive force due to the magnetic force, and the drain water is opened to the valve It is discharged from a discharge port 10b formed in the cover through a small hole 51a formed in the valve seat 51 from a hole 55a formed in the valve case 55 which is a part of the main body 50.

  In this case, it is conceivable that the valve seat 51 is opened slightly before the float 20 hits the stopper 10x.

  Further, when the discharge from the valve seat 51 progresses and the liquid level of the drain water is lowered, the float 20 is in a state where the horizontal distance d between the center of oscillation and the center of gravity of the float and the weight W of the float are present. The moment that the magnet is about to fall (that is, the value of d × W) overcomes the moment that the permanent magnet 23 or the like scratches the drain water, and the float 20 starts to descend. Then, as shown in FIG. 8, the valve seat 51 is opened, and the lowering proceeds while the valve body 52 and the spring receiver 54 are in close contact with each other.

  In this way, before the float 20 reaches the lowest position, the acting force (attraction force by the magnetic force) exerted on the valve body 52 by the permanent magnet 23 is weakened, and as a result, the spring force of the spring 53 is overcome. Then, the valve seat 51 is started to be closed by the valve body 52. Accordingly, a gap is formed between the valve body 52 and the spring receiver 54.

  In the above description, the movement of the valve body 52 has been described focusing on the acting force (attraction force by magnetic force) between the permanent magnet 23 and the valve body 52 and the force of the spring 53. However, it is natural to consider the acting force (attraction force by magnetic force) between the valve body 52 and the spring receiver 54 and the force applied to the cross section of the valve seat 51 described in the general idea.

  Thus, when the valve seat 51 is finally completely closed by the valve body 52, the drain water in the cover 10 increases, and the float 20 starts to rise accordingly. The fact that the float 20 is located at the lowermost or uppermost position has been described with the swing angle being 90 degrees or 0 degrees in the description, but it can be freely changed before and after that value by various condition settings. possible.

  The present invention relates to a float drain trap and a drain water discharge method. More specifically, the valve seat connected to the discharge port is closed with a hard rubber at one end on the valve seat side. A paramagnetic valve body that is integrally formed. The spring is in contact with the other end, and the valve body is pressed against the valve seat by overcoming the magnetic force. The other end of the spring is received by the spring receiver, and the spring receiver is non-magnetic. The valve case is fixed to the valve case, the valve case is fixed to the valve seat, and the valve body and the spring are housed in the valve seat, the valve case, and the spring receiver so as to operate smoothly. The valve seat is opened by positioning a float with an integrated permanent magnet inside the cover. The float swings around the swing center by the amount of drain water accumulated in the cover. The space between the magnet and the valve body to be attracted Or by using an indirect magnetic force that exerts a magnetic force across an object or both, that is, by using a spring force and an indirect magnetic force, the float and the valve element move separately and become one united. This is a technology that prevents the water from being always half-opened when drain water is squeezed out. It can be said that this is one of the most desired technologies in the type drain trap.

1. Drain trap 10 ... Cover 10a ... Inlet 10b ... Outlet 10c ... Air piping port 10x ... Stopper 11 ··· First cover 12 ··· Second cover 13 ··· O-ring 20 ··· Float 21 ··· Float body 22 ··· ···························· Support 23 ······ Permanent magnet 24 ··· Shaft 50 ··· Valve body 51 ··· Valve seat 51a · · · ... valve body 52a ... hole 52b ... groove 52c ... spring housing 52x ... hard rubber 53 ... spring 54 ... ... Spring holder 54a ... Spring housing 54c ... Driver groove 55 ... Valve case 55a ... Hole 55b ... · Step 56 ······ O-ring 60 ··· Cap 70 ··· Bracket 70a ··· Oscillation center d ········ Oscillation center and float Horizontal distance D between the center of gravity of the valve body ······················································· ... Working force F3 generated between the S pole of the permanent magnet and the N pole of the valve body ...... Spring force G ...... Float center of gravity W ...... Float Weight α ······ Oscillating angle

Claims (15)

  The gas-liquid mixture of compressed air and drain water generated from the compressed air is received from the inlet at the top of the cover, drain water is separated from the gas-liquid mixture, and drain water is discharged from the outlet provided at the bottom of the side wall. In the float drain trap, the valve seat connected to the discharge port is closed by a paramagnetic valve body integrally formed with hard rubber at one end on the valve seat side. The valve element is overcome and pressed against the valve seat by the force of the spring in contact, the other end of the spring is received by a spring holder, the spring holder is fixed to a non-magnetic valve case, and the valve case is It is a cartridge-type valve body that is fixed to a valve seat and accommodates the valve body and the spring so as to operate smoothly inside the valve seat, the valve case, and the spring receiver, and the valve seat is opened. All you do is a permanent magnet inside the cover An integral float is positioned, and the float swings around the swing center according to the amount of drain water accumulated in the cover. A float-type drain trap characterized by using an indirect magnetic force that exerts a magnetic force across a space or an object or both.   When the float is at the lowermost position, the permanent magnet is positioned at a right angle to the valve body so that the magnetic attraction is small. When the float is at the uppermost position, the permanent magnet is centered with respect to the valve body. It is arranged that the attraction by the magnetic force is the largest in the process of rising by being positioned in the vicinity of the line, and the attraction force by the magnetic force between the permanent magnet and the valve body when the float is at the top is 2. The float drain trap according to claim 1, wherein the valve seat is opened by being larger than a sum of a force applied by a spring and a force applied to a portion of a cross-sectional area of a portion through which the drain water of the valve seat passes.   3. The float drain trap according to claim 2, wherein when the spring support is also a paramagnetic material, it is confirmed that the attractive force due to the magnetic force between the valve body and the spring support is large as the attractive force due to the magnetic force. .   4. The float drain trap according to claim 2, wherein the float is the uppermost part when the float reaches a stopper formed at an upper part inside the cover. 5.   The swing center is located on a bracket that is integrally located on an outer peripheral upper portion of the valve case constituting the valve body, and the bracket is non-magnetic. The float drain trap according to claim 4.   The float is formed by integrally forming a float body, two supports, two permanent magnets positioned on the support, and a shaft positioned at the swing center of the bracket. The float drain trap according to claim 5, wherein the magnet swings in a state where the magnet sandwiches the valve body and is symmetrical with respect to a center line of the valve body.   The float has a specific gravity of 0.80 to 0.95 and corresponds to the change of drain water in a floating state. When the drain water decreases at the position of the stopper, it falls by its own weight. The float drain trap according to any one of claims 4 to 6, wherein:   The float drain trap according to any one of claims 2 to 7, wherein a water surface in the cover when the float is at a lowermost part is positioned above the discharge port.   In the portion of the valve case where the valve seat or the valve body below the contact surface between the valve seat and the valve body is not located, a hole from the outer peripheral bottom is formed to prevent any discharge of compressed air. The float drain trap according to any one of claims 1 to 8, wherein the float drain trap is formed.   In the valve body, for the purpose of supplying drain water so that the operation of the valve body can be smoothly performed, a straight line or a plurality of grooves cut in a V shape in parallel with the shaft is formed at the bottom of the valve body, The float drain trap according to any one of claims 1 to 9, wherein a hole is provided between a spring housing portion for receiving a spring and the groove at the bottom. The float drain trap according to any one of claims 1 to 10, wherein the permanent magnet is a neodymium magnet having a strong magnetic force. The gas-liquid mixture of compressed air and drain water generated from the compressed air is received from the inlet at the top of the cover, drain water is separated from the gas-liquid mixture, and drain water is discharged from the outlet provided at the bottom of the side wall. In the drain water discharging method, a permanent magnet integrated with the float is swung in response to rocking of the float due to the amount of drain water accumulated in the cover, and the valve element is magnetized on the valve seat by the spring force. closed by pressing overcome the by indirect magnetic force exerting a magnetic force across a space or an object, or both between the valve body of the permanent magnets and the attractant paramagnetic, the outlet It said valve seat that is connected to open by the movement by the suction of the valve body, intermittently discharged methods drain water, characterized in that for discharging the drain water.   When the float is at the bottom, the permanent magnet is positioned at a right angle to the valve body so that the attraction by the magnetic force is the smallest. When the float is at the top, the permanent magnet is centered with respect to the valve body. 13. The drain water discharging method according to claim 12, wherein the suction by the magnetic force is made the largest in the process of rising by being positioned in the vicinity.   The drain water draining method according to claim 12 or 13, wherein attraction by a magnetic force of a spring bearing of a paramagnetic body receiving the valve body and the spring is added.   The valve seat and the valve body are in close contact with each other at the same rocking angle in the process of raising or lowering the float, and the valve seat and the valve body are necessarily opened when descending. The drain water discharge method according to any one of Items 12 to 14.

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