CN214093067U - Lever floating ball type automatic drain valve - Google Patents

Abstract

The utility model discloses a lever float ball type automatic drain valve, which comprises a valve seat and a lever, wherein the valve seat and the lever are arranged in a water storage container, a valve seat flow channel communicated with a drain pipe on the water storage container is arranged in the valve seat, a flow guide valve core is arranged on the valve seat, a valve core flow channel communicated with the valve seat flow channel is arranged in the flow guide valve core, and a valve core side sealing inclined plane lower than the upstream end of the valve core flow channel is arranged outside the flow guide valve core; the lever is connected with a blind hole-shaped valve core sleeve, the valve core sleeve can cover the upstream end of a valve core flow channel, the bottom end of the valve core sleeve is provided with a sleeve side sealing inclined plane which can be matched with the valve core side sealing inclined plane, and the valve core flow channel and the water storage container are conducted or cut off through the valve core sleeve in the swinging process of the lever in the water storage container. The utility model discloses a sealed comparatively stable, long-term between diverter valve core and the case sleeve, the good reliability.

Description

Lever floating ball type automatic drain valve

Technical Field

The utility model relates to a valve specifically is a lever floater formula automatic drainage valve.

Background

The main structure of the lever floating ball type automatic drain valve is shown in figure 1, and the lever floating ball type automatic drain valve mainly comprises a water storage container 1, a valve seat 8 arranged in the water storage container 1, a valve core, a lever 5, a floating ball 4 and the like. Specifically, be provided with on the retaining container 1 can be with the water collecting pipe 2 that the water liquid drainage converges, can be with the outer drain pipe 3 that arranges of the water liquid that converges, valve seat 8 is fixed at the upper reaches end department of drain pipe 3, and the case is connected on lever 5, and with the cooperation of valve seat 8, the one end of lever 5 is articulated with the fixing base on the valve seat 8, the other end is articulated with floater 4. The automatic drainage process of the lever floating ball type automatic drainage valve is that in an initial state, the floating ball 4 enables the lever 5 to swing downwards to the lowest position under the action of gravity, the valve core at the moment is seated on the valve seat 8, and the space between the inner cavity of the water storage container 1 and the drainage pipe 3 is cut off; when the buoyancy of the water liquid collected in the water storage container 1 is larger than the gravity of the floating ball 4, the floating ball 4 rises along with the rise of the liquid level, the rising floating ball 4 drives the lever 5 to swing upwards, the valve core is unsealed on the valve seat 8 at the moment to conduct between the inner cavity of the water storage container 1 and the drain pipe 3, the water liquid collected in the water storage container 1 is discharged outwards, the liquid level descends along with the water liquid, and the floating ball 4 resets under the action of the gravity; the automatic drainage achieved by such reciprocation is widely applied to process devices in which water is produced, particularly process devices in which drainage is produced, such as gas-liquid separation equipment of gas production and transportation field stations.

The common lever float type automatic drain valve adopts the matching structure between the valve seat and the valve core as shown in figure 2, and the valve seat 8^， Flow passage 9 with valve seat therein^，When the valve seat 8 is in^，When fixed in the water storage container, the valve seat 8^，Upper valve seat flow passage 9^，Is communicated with a drain pipe on the water storage container and is arranged in the valve seat flow passage 9^，Forms a flared, concave sealing sphere 20, the concave sealing sphere 20 is used for matching with the sealing sphere of the valve core, and the water in the water storage container enters the valve seat flow passage 9 through the concave sealing sphere 20^，The inner part and the outer part are discharged outside by a drainage pipe; the valve core is a plug valve core 19 with a solid core structure, and the plug valve core 19 is fixed on the lever 5 close to the valve seat 8 through a nut and other components^，On the fixed seat 11^，And corresponding to the valve seat 8^，Upper valve seat flow passage 9^，The upstream end, the bottom end of the plug core 19, has a seat 8 which fits into^，The convex sealing spherical surface 21 of the concave sealing spherical surface 20, the convex sealing spherical surface 21 of the plug valve core 19 and the valve seat 8 are passed through during the swinging process of the lever 5 in the water storage container^，The concave sealing spherical surface 20 of the valve seat 8 is directly matched with the hard seal^，Valve core flow passage 9^，Is communicated with/cut off from the water storage containerAnd (7) breaking.

The matching structure between the valve seat and the plug valve core ensures that water liquid in the water storage container must flow through the concave sealing spherical surface on the valve seat and is discharged outwards, so that impurities carried in the water liquid erode the concave sealing spherical surface. Moreover, the water in the water storage container is blocked when flowing through the valve seat flow passage in the valve seat, so that the throttling phenomena of pressure reduction and flow velocity acceleration are generated at the concave sealing spherical surface, and thus impurities carried by the rapidly flowing water cause more serious erosion to the concave sealing spherical surface.

Therefore, the lever floating ball type automatic drain valve adopting the structure matched between the valve seat and the plug valve core is easy to have the technical problem of sealing failure, is not stable enough and long-acting, and increases the maintenance frequency and the cost. Moreover, when the valve is applied to working conditions and environments where special media such as natural gas exist, great potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

The technical purpose of the utility model is that: aiming at the particularity of the lever floating ball type automatic drain valve and the defects of the prior art, the lever floating ball type automatic drain valve which is stable in sealing and long in acting is provided.

The technical purpose of the utility model is realized through the following technical scheme: a lever floating ball type automatic drain valve comprises a valve seat and a lever, wherein the valve seat and the lever are arranged in a water storage container, a valve seat flow channel communicated with a drain pipe on the water storage container is arranged in the valve seat, a flow guide valve core is arranged on the valve seat, a valve core flow channel communicated with the valve seat flow channel of the valve seat is arranged in the flow guide valve core, and a valve core side sealing inclined plane lower than the upstream end of the valve core flow channel is arranged outside the flow guide valve core; the lever is connected with a blind hole-shaped valve core sleeve, the valve core sleeve can cover the upstream end of a valve core flow channel of the flow guide valve core, the bottom end of the valve core sleeve is provided with a sleeve side sealing inclined plane which can be matched with the valve core side sealing inclined plane of the flow guide valve core, and the lever is used for conducting/cutting off the valve core flow channel of the flow guide valve core and the water storage container through the valve core sleeve in the swinging process in the water storage container. The technical measure forms a flow guide valve core and a valve core sleeve which are mutually matched between a valve seat and a lever, and forms a mutually independent arrangement structure with staggered height between a throttling position (namely the upstream end of a valve core flow channel) and a sealing position (namely the side sealing inclined plane of the valve core) on the flow guide valve core, so that the connection/disconnection between a water storage container and a drain pipe can be reliably realized, the erosion of the side sealing inclined plane of the valve core caused by externally discharged water liquid can be effectively avoided, and at least the direct erosion of the side sealing inclined plane of the valve core caused by the externally discharged water liquid can be avoided; in addition, the area of a valve core side sealing inclined plane formed on the periphery of the flow guide valve core is far larger than the flow area at the upstream end of a valve core flow channel of the flow guide valve core, the flow velocity and flow pressure of the externally discharged water flowing through the valve core side sealing inclined plane are greatly reduced, and the erosion of the externally discharged water on the valve core side sealing inclined plane is effectively inhibited; therefore, the utility model discloses a valve core side seal inclined plane on the diverter valve core is not fragile, and sealed between diverter valve core and the case sleeve is comparatively stable, long-term, good reliability.

As one of the preferable schemes, at least one diversion port communicated with the upstream end of the valve core flow channel is arranged in the radial direction of the diversion valve core, the diversion port of the diversion valve core is higher than the valve core side sealing inclined plane, and when the lever drives the valve core sleeve to swing upwards to the highest position, the diversion port of the diversion valve core is not enclosed by the inner wall of the valve core sleeve; the technical measure is beneficial to the smooth flowing and discharging of the water liquid in the water storage container under the conduction state. Furthermore, the number of the flow guide ports of the flow guide valve core is 2-4, and the flow guide ports are uniformly distributed in the circumferential direction; the technical measure is beneficial to the more balanced compression of the periphery of the diversion valve core and can ensure that the outward drainage liquid reliably forms a convection buffering technical effect on the diversion valve core, and particularly the symmetrical arrangement structure of 2/4 diversion ports is most prominent, so that the erosion of the outward drainage liquid to the diversion valve core is reliably reduced. The sum of the flow areas of all the flow guide ports of the flow guide valve core is maximally equal to the flow area of the valve core flow passage; the technical measure arranges the throttling positions formed on the flow guide valve core in a step-by-step manner, thereby effectively reducing the flow velocity of the discharged water liquid, slowing down the erosion of the discharged water liquid to the flow guide valve core and simultaneously ensuring that the flow channel of the valve core is not easy to block. The flow guide ports of the flow guide valve cores are in a vertical arrangement structure; the technical measure is matched with the lifting position of the valve core sleeve outside the diversion valve core to realize flexible adjustment of the conduction opening, so that the external drainage flow is controlled.

Preferably, the valve element side sealing inclined plane of the flow guide valve element is formed in an inclined manner of 40-50 degrees compared with the axial direction of the flow guide valve element. Furthermore, the valve core side sealing inclined plane of the flow guide valve core is obliquely formed at an angle of 45 degrees compared with the axial direction of the flow guide valve core. The technical measure can maximize the sealing contact area between the flow guide valve core and the valve core sleeve, the sealing is tight and reliable, and meanwhile, the attachment and accumulation of impurities in water on the side sealing inclined plane of the valve core can be effectively eliminated.

As one preferable scheme, at least one flexible sealing ring is embedded on the valve core side sealing inclined plane of the flow guide valve core, and the outer side of the flexible sealing ring slightly protrudes from the valve core side sealing inclined plane. The technical measure has the technical effect that a certain linear sealing is formed between the valve core sleeve and the flow guide valve core through the flexible sealing ring, and the sealing reliability between the flow guide valve core and the valve core sleeve is further enhanced.

Preferably, the spool sleeve is hinged to the lever. This technical measure can make and form nimble, stable clearance fit between case sleeve and the diverter valve core, can form certain degree from the adaptation effect under the action of gravity between the two to prevent to influence the unable sealed technical problem emergence between case sleeve and the diverter valve core after the eccentric phenomenon of in service later stage takes place.

As one preferable scheme, one end of the lever is hinged on the fixed seat on the valve seat or close to the valve seat, and the other end of the lever is hinged with the floating ball in the water storage container.

Preferably, an integral molding structure or a detachable combined structure is arranged between the valve seat and the flow guide valve core.

The utility model has the beneficial technical effects that: the technical measures are that the flow guide valve core and the valve core sleeve which are mutually matched are formed between the valve seat and the lever, and the throttling position (namely the upstream end of the valve core flow channel) and the sealing position (namely the valve core side sealing inclined plane) on the flow guide valve core form a mutually independent arrangement structure with staggered heights, so that the water storage container and the drain pipe can be reliably communicated/cut off, the direct erosion of the outward-discharged water liquid to the valve core side sealing inclined plane can be effectively avoided, and at least the direct erosion of the outward-discharged water liquid to the valve core side sealing inclined plane can be avoided; in addition, the area of a valve core side sealing inclined plane formed on the periphery of the flow guide valve core is far larger than the flow area at the upstream end of a valve core flow channel of the flow guide valve core, the flow velocity and flow pressure of the externally discharged water flowing through the valve core side sealing inclined plane are greatly reduced, and the erosion of the externally discharged water on the valve core side sealing inclined plane is effectively inhibited; therefore, the valve core side sealing inclined plane on the diversion valve core of the utility model is not easy to damage, the sealing between the diversion valve core and the valve core sleeve is stable and long-acting, and the reliability is good; the utility model discloses an automatic drain valve both can be applicable to the automatic outer control of arranging of water liquid in general flow device, can also be applicable to the automatic outer control of arranging of water liquid in the flow device that has special media such as natural gas to exist.

Drawings

Fig. 1 is a schematic view of the overall structure of a lever float type automatic drain valve.

Fig. 2 is a schematic view of a valve seat and valve core matching structure of a common lever float type automatic drain valve.

Fig. 3 is a schematic structural diagram of the present invention in an open state.

Fig. 4 is a schematic structural diagram of the present invention in a closed state.

The reference numbers in the figures mean: 1-a water storage container; 2-a water collecting pipe; 3, a water drainage pipe; 4-floating ball; 5-a lever; 6-valve core sleeve; 7-a flow guide valve core; 8. 8. about.^，-a valve seat; 9. 9. The following is a description of the preferred embodiment^，-a valve seat flow passage; 10-valve core flow channel; 11. 11. the following examples illustrate the use of^，-a fixed seat; 12-sleeve side sealing bevel; 13-flexible sealing ring; 14-a flow guide port; 15-a second hinge shaft; 16-a limiting piece; 17-a first hinge shaft; 18-spool side seal ramp; 19-plug valve core; 20-concave sealing spherical surface; 21-convex sealing spherical surface.

Detailed Description

The utility model relates to a valve specifically is a lever float formula automatic drainage valve, and it is right below with a plurality of embodiments the utility model discloses a main part technical content carries out the detailed description. In the embodiment 1, the technical solution content of the present invention is clearly and specifically explained with reference to the drawings of the specification, i.e., fig. 1, fig. 3 and fig. 4; in other embodiments, although not separately depicted, the main structure of the embodiment can still refer to the drawings of embodiment 1.

It is expressly stated here that the drawings of the present invention are schematic, and unnecessary details have been simplified for the purpose of clarity in order to avoid obscuring the technical solutions that contribute to the prior art.

Example 1

Referring to fig. 1, 3 and 4, the present invention includes a water storage container 1, and a valve seat 8, a lever 5, a floating ball 4, a diversion valve core 7 and a valve core sleeve 6 arranged in the water storage container 1.

Wherein, the water storage container 1 is formed by the sealing butt joint of an upper half body and a lower half body. The top of the upper half body of the water storage container 1 is provided with a water collecting pipe 2 which can guide and collect water and liquid in a process device (such as a gas-liquid separator of natural gas). The bottom of the lower half body of the water storage container 1 is provided with a drain pipe 3 which can discharge the collected water liquid.

The valve seat 8 is fixedly connected at the upstream end of the drain pipe 3. The valve seat 8 has a valve seat flow channel 9 inside, which is communicated with the drain pipe 3 on the reservoir 1, and the valve seat flow channel 9 is a component section of the drain pipe 3 communicated with the inner cavity of the reservoir 1. One side of the top of the valve seat 8, which is close to the wall body of the water storage container 1, is provided with a fixing seat 11 which protrudes upwards.

One end of the lever 5 is hinged on the fixed seat 11 of the valve seat 8 through a second hinge shaft 15, and the other end of the lever 5 is hinged on the floating ball 4 through a corresponding hinge shaft.

The water conservancy diversion case 7 comprises from top to bottom upside cylindricality section, inclined plane sealing section, middle part cylindricality section and downside cylindricality section, and the external diameter of middle part cylindricality section is greater than the external diameter of upside cylindricality section and downside cylindricality section respectively, and the transition gradually between upside cylindricality section and middle part cylindricality section is sealed to the inclined plane, forms the step cooperation between downside cylindricality section and the middle part cylindricality section, and the external diameter of downside cylindricality section matches in the disk seat runner 9 upstream end department internal diameter of above-mentioned disk seat 8. The flow guide valve core 7 is hermetically connected with a detachable structure (such as a plug connection, a threaded connection and the like) at the upstream end of a valve seat flow passage 9 of the valve seat 8 through the lower cylindrical section.

The inside of the flow guide valve core 7 is provided with a valve core flow channel 10 communicated with a valve seat flow channel 9 of a valve seat 8, the valve core flow channel 10 is a component section of the water drain pipe 3 communicated with the inner cavity of the water storage container 1, and generally, the flow area of the valve core flow channel 10 is smaller than that of the valve seat flow channel 9; the upstream end of the spool flow channel 10 extends into the upper cylindrical section of the pilot spool 7, but does not pass through the top surface of the pilot spool 7. Two diversion ports 14 communicated with the upstream end of the valve core flow channel 10 are radially arranged on the upper side cylindrical section of the diversion valve core 7, each diversion port 14 is in a vertical arrangement structure on the upper side cylindrical section of the diversion valve core 7, the two diversion ports 14 are uniformly arranged in the circumferential direction on the upper side cylindrical section of the diversion valve core 7, namely in a symmetrical arrangement structure, and the sum of the flow areas of the two diversion ports 14 is slightly smaller than the flow area of the valve core flow channel 10.

The outside of the pilot valve element 7 is provided with a valve element side sealing bevel 18, the valve element side sealing bevel 18 is formed on the bevel sealing section of the pilot valve element 7, and the valve element side sealing bevel 18 is formed to be inclined at substantially 45 ° compared with the axial direction of the pilot valve element 7 (of course, an inclination close to 45 ° may be also possible, for example, 40 ° or 50 ° or the like, preferably 45 °). The highest position of the valve core side sealing inclined surface 18 on the pilot valve core 7 is lower than the lowest position of the pilot port 14 on the pilot valve core 7, and the height difference between the two positions is usually not less than 5mm (for example, 10mm and the like). Two flexible sealing rings 13 (such as high temperature resistant, oil resistant and corrosion resistant fluororubber sealing rings) are embedded on the valve core side sealing inclined plane 18 of the flow guide valve core 7, the two flexible sealing rings 13 are arranged at different heights of the valve core side sealing inclined plane 18, and the outer side of each flexible sealing ring 13 slightly protrudes from the valve core side sealing inclined plane 18.

The valve core sleeve 6 is a hollow cylindrical structure with a closed top end and an open bottom end, and is blind hole-shaped. The inner hollow outer diameter of the valve core sleeve 6 is slightly larger than the outer diameter of the upper side cylindrical section of the flow guide valve core 7, and the inner hollow depth of the valve core sleeve 6 is slightly larger than the height of the upper side cylindrical section of the flow guide valve core 7, that is, when the valve core sleeve 6 and the flow guide valve core 7 are combined together, the valve core sleeve 6 can cover the upper side cylindrical section of the flow guide valve core 7, namely, the flow guide port 14 at the upstream end of the valve core flow channel 10 on the flow guide valve core 7 can be covered. The bottom end of the valve core sleeve 6 is provided with an inward-contracting and outward-expanding inclined surface structure, namely a sleeve side sealing inclined surface 12, and the sleeve side sealing inclined surface 12 can be matched with a valve core side sealing inclined surface 18 outside the flow guide valve core 7; when the spool sleeve 6 covers the upper cylindrical section of the diverter spool 7 and sits down, the sleeve-side sealing bevel 12 of the spool sleeve 6 forms a surface contact fit with the spool-side sealing bevel 18 of the diverter spool 7.

The top of the valve core sleeve 6 is hinged on the lever 5 through a hinge shaft I17 and is close to the fixed seat 11 on the valve seat 8, however, the valve core sleeve 6 hinged on the lever 5 should form an up-and-down corresponding fit on the flow guide valve core 7 on the valve seat 8. When the lever 5 drives the spool sleeve 6 to swing up to the highest position, although the spool sleeve 6 covers the top of the upper cylindrical section of the diversion spool 7 above, the diversion port 14 of the diversion spool 7 should not be surrounded by the inner wall of the spool sleeve 6 (referring to the wall surface of the non-sleeve side sealing inclined surface 12, i.e., the straight cylinder wall surface).

The utility model discloses an automatic drainage process is:

in the initial state, the floating ball 4 makes the lever 5 swing down to the lowest position under the action of gravity, and the spool sleeve 6 covers the upper cylindrical section of the diversion spool 7 and is seated on the spool side sealing inclined plane 18 of the diversion spool 7 through the sleeve side sealing inclined plane 12, so that the spool flow channel 10 (diversion port 14) of the diversion spool 7 is cut off from the inner cavity of the water storage container 1;

when the buoyancy of the water collected in the water storage container 1 is greater than the gravity of the floating ball 4, the floating ball 4 rises along with the rise of the liquid level, the rising floating ball 4 drives the lever 5 to swing upwards, the valve core sleeve 6 is unsealed on the diversion valve core 7 at the moment to conduct the inner cavity of the water storage container 1 with the valve core flow channel 10 of the diversion valve core 7, and the water in the water storage container 1 is discharged to the drain pipe 3 through the diversion port 14, the valve core flow channel 10 and the valve seat flow channel 9;

the floating ball 4 is reset under the action of gravity as the liquid level drops as the water collected in the water storage container 1 is discharged.

In the above structure, in order to prevent the valve core sleeve 6 from being separated from the diversion valve core 7 to be covered as the lever 5 freely moves upward in the reservoir 1, a stopper 16, such as a shaft, a protrusion, etc., is preferably provided on the top of the fixing seat 11 of the valve seat 8. The matching relationship between the limiting member 16 and the lever 5 is that when the lever 5 driven by the floating ball 4 swings upward until the diversion port 14 covered by the valve core sleeve 6 is fully opened, but the valve core sleeve 6 is not separated from the diversion valve core 7, the limiting member 16 limits the lever 5 and prevents the lever from swinging upward continuously. Of course, the limiting member 16 may be disposed in other ways as long as the valve core sleeve 6 driven by the lever 5 is prevented from being separated from the diversion valve core 7, for example, the diversion port 14 is limited when in a half-open state.

Example 2

The utility model discloses a retaining container and arrange disk seat, lever, floater, water conservancy diversion case, case sleeve in retaining container.

Wherein, the water storage container is formed by the sealing butt joint of an upper half body and a lower half body. The top of the upper half body of the water storage container is provided with a water collecting pipe which can guide and collect water and liquid in a process device (such as a gas-liquid separator of natural gas). The bottom of the lower half body of the water storage container is provided with a drain pipe which can discharge collected water liquid outwards.

The valve seat is fixedly connected at the upstream end of the drain pipe. The valve seat is internally provided with a valve seat flow channel communicated with a drain pipe on the water storage container, and the valve seat flow channel is an integral section of the inner cavity of the water storage container communicated with the drain pipe. One side of the top of the valve seat, which is close to the wall body of the water storage container, is provided with a fixing seat protruding upwards.

One end of the lever is hinged on the fixed seat of the valve seat through a second hinge shaft, and the other end of the lever is hinged on the floating ball through a corresponding hinge shaft.

The flow guide valve core is formed on the top of the valve seat in an integral structure. The blast gate valve core from top to bottom has upside cylindricality section, inclined plane sealing section and downside cylindricality section to constitute, and the external diameter of downside cylindricality section is greater than the external diameter of upside cylindricality section, and the inclined plane sealing section passes through between upside cylindricality section and downside cylindricality section gradually. The flow guide valve core is internally provided with a valve core flow channel communicated with a valve seat flow channel of the valve seat, the valve core flow channel is a component section of a water drain pipe communicated with an inner cavity of the water storage container, and generally, the flow area of the valve core flow channel is smaller than that of the valve seat flow channel; the upstream end of the spool flow passage extends into the upper cylindrical section of the pilot spool but does not pass through the top surface of the pilot spool.

The upper side cylindrical section of the diversion valve core is radially provided with four diversion ports communicated with the upstream end of the valve core flow channel, each diversion port is in a vertical arrangement structure on the upper side cylindrical section of the diversion valve core, the four diversion ports are uniformly arranged on the upper side cylindrical section of the diversion valve core in the circumferential direction, namely, pairwise symmetrical arrangement structures are formed, and the sum of the flow areas of the four diversion ports is basically equal to the flow area of the valve core flow channel.

The outside of the pilot valve element is provided with a valve element side sealing bevel formed on the bevel sealing section of the pilot valve element, and the valve element side sealing bevel is formed to be inclined at substantially 45 ° compared with the axial direction of the pilot valve element (of course, an inclination close to 45 ° may be also possible, for example, 40 ° or 50 ° or the like, preferably 45 °). The highest position of the valve core side sealing inclined plane on the flow guide valve core is lower than the lowest position of the flow guide opening on the flow guide valve core, and the height difference between the two positions is usually not less than 5mm (for example, 7 mm). Three flexible sealing rings (such as high-temperature-resistant, oil-resistant and corrosion-resistant fluororubber sealing rings) are embedded on the valve core side sealing inclined plane of the flow guide valve core and are arranged at different heights of the valve core side sealing inclined plane, and the outer side of each flexible sealing ring slightly protrudes from the valve core side sealing inclined plane.

The valve core sleeve is a hollow cylindrical structure with a closed top end and an open bottom end and is blind hole-shaped. The hollow external diameter of the valve core sleeve is slightly larger than the external diameter of the upper side cylindrical section of the flow guide valve core, and meanwhile, the hollow depth of the valve core sleeve is slightly larger than the height of the upper side cylindrical section of the flow guide valve core, namely, when the valve core sleeve is combined with the flow guide valve core, the valve core sleeve can cover the upper side cylindrical section of the flow guide valve core, namely, a flow guide opening at the upstream end of a valve core flow channel on the flow guide valve core can be covered by the valve core sleeve. The bottom end of the valve core sleeve is provided with an inward-contracting and outward-expanding inclined surface structure, namely a sleeve side sealing inclined surface which can be matched with the valve core side sealing inclined surface outside the diversion valve core; when the valve core sleeve covers the upper side cylindrical section of the flow guide valve core and sits down, the sleeve side sealing inclined surface of the valve core sleeve and the valve core side sealing inclined surface of the flow guide valve core form surface contact matching.

The top of the valve core sleeve is hinged on the lever through the first hinge shaft and is close to the fixed seat on the valve seat, but the valve core sleeve hinged on the lever is matched with the flow guide valve core on the valve seat up and down correspondingly. When the lever drives the spool sleeve to swing up to the highest position, although the spool sleeve covers the top of the upper side cylindrical section of the flow guide spool at the upper part, the flow guide port of the flow guide spool is not surrounded by the inner wall (referring to the wall surface of the sealing inclined surface at the non-sleeve side, namely the wall surface of the straight cylinder) of the spool sleeve.

The utility model discloses an automatic drainage process is:

in the initial state, the float ball makes the lever swing down to the lowest position under the action of gravity, and the spool sleeve covers the upper side cylindrical section of the flow guide spool and is located on the spool side sealing inclined plane of the flow guide spool through the sleeve side sealing inclined plane, so that a spool flow channel (flow guide port) of the flow guide spool is cut off from the inner cavity of the water storage container;

when the buoyancy of the water collected in the water storage container is greater than the gravity of the floating ball, the floating ball rises along with the rise of the liquid level, the rising floating ball drives the lever to swing upwards, the valve core sleeve is unsealed on the diversion valve core at the moment to conduct the inner cavity of the water storage container with a valve core flow channel (diversion port) of the diversion valve core, and the water in the water storage container is discharged to the drainage pipe through the diversion port, the valve core flow channel and the valve seat flow channel;

the floating ball is reset under the action of gravity as the liquid level is reduced along with the drainage of the water collected in the water storage container.

In the above structure, in order to prevent the valve core sleeve from being separated from the flow guide valve core to be covered as the lever moves up freely in the water reservoir, it is preferable to provide a limiting member, such as a shaft, a protrusion, etc., on the top of the fixing seat of the valve seat. The matching relation between the limiting piece and the lever is that when the lever driven by the floating ball swings upwards until the diversion opening covered by the valve core sleeve is fully opened but the valve core sleeve is not separated from the diversion valve core, the limiting piece limits the lever and prevents the lever from swinging upwards continuously. Of course, as long as the valve core sleeve driven by the lever is prevented from being separated from the flow guide valve core, the limiting member may be arranged in other ways, for example, the flow guide port is limited when in a half-open state.

Example 3

The other contents of this embodiment are the same as those of embodiment 1 or 2, except that: the fixing seat of the connecting lever is formed on other structures independent of the valve seat, for example on the wall body of the water storage container.

Example 4

The above examples are only for illustrating the present invention and are not to be construed as limiting the same. Although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: the above embodiment can still be modified, or some technical features of the above embodiment can be equivalently replaced (for example, the water storage container adopts other conventional structures; for example, the diversion valve core is not provided with a diversion port structure, but the upstream end of the valve core flow passage is directly communicated with the top surface of the diversion valve core, etc.); and such modifications or substitutions do not depart from the spirit and scope of the present invention in its essence.

Claims (10)

1. The utility model provides a lever floating ball formula automatic drainage valve, is including arranging disk seat (8) and lever (5) in retaining container (1), have in disk seat (8) with disk seat runner (9) that drain pipe (3) on retaining container (1) are linked together, its characterized in that:

-a flow guiding valve core (7) is arranged on the valve seat (8), a valve core flow passage (10) communicated with a valve seat flow passage (9) of the valve seat (8) is arranged inside the flow guiding valve core (7), and a valve core side sealing inclined surface (18) lower than the upstream end of the valve core flow passage (10) is arranged outside the flow guiding valve core (7);

-a blind-hole-shaped valve core sleeve (6) is connected to the lever (5), the valve core sleeve (6) can cover the upstream end of a valve core flow channel (10) of the flow guiding valve core (7), the bottom end of the valve core sleeve (6) is provided with a sleeve side sealing inclined plane (12) which can be matched with a valve core side sealing inclined plane (18) of the flow guiding valve core (7), and the valve core flow channel (10) of the flow guiding valve core (7) is communicated with/cut off from the water storage container (1) through the valve core sleeve (6) in the swinging process of the lever (5) in the water storage container (1).

2. The lever-float type automatic drain valve according to claim 1, wherein: the radial direction of the flow guide valve core (7) is provided with at least one flow guide port (14) communicated with the upstream end of the valve core flow channel (10), the position of the flow guide port (14) of the flow guide valve core (7) is higher than the valve core side sealing inclined plane (18), and when the lever (5) drives the valve core sleeve (6) to swing upwards to the highest position, the flow guide port (14) of the flow guide valve core (7) is not covered by the inner wall of the valve core sleeve (6).

3. The lever-float type automatic drain valve according to claim 2, wherein: the flow guide ports (14) of the flow guide valve core (7) are 2-4 which are uniformly distributed in the circumferential direction.

4. The lever-float type automatic drain valve according to claim 2 or 3, wherein: the maximum value of the sum of the flow areas of all the diversion ports (14) of the diversion valve core (7) is equal to the flow area of the valve core flow passage (10).

5. The lever-float type automatic drain valve according to claim 2 or 3, wherein: the flow guide ports (14) of the flow guide valve cores (7) are in a vertical arrangement structure.

6. The lever-float type automatic drain valve according to claim 1, wherein: the valve core side sealing inclined plane (18) of the flow guide valve core (7) is obliquely formed by 40-50 degrees compared with the axial direction of the flow guide valve core (7).

7. The lever-float type automatic drain valve according to claim 1 or 6, wherein: at least one flexible sealing ring (13) is embedded on a valve core side sealing inclined surface (18) of the flow guide valve core (7), and the outer side of the flexible sealing ring (13) protrudes out of the valve core side sealing inclined surface (18).

8. The lever-float type automatic drain valve according to claim 1, wherein: the valve core sleeve (6) is hinged to the lever (5).

9. The lever-float type automatic drain valve according to claim 1 or 8, wherein: one end of the lever (5) is hinged on the valve seat (8) or the fixed seat (11) near the valve seat (8), and the other end is hinged with the floating ball (4) in the water storage container (1).

10. The lever-float type automatic drain valve according to claim 1, wherein: and an integral molding structure or a detachable combined structure is arranged between the valve seat (8) and the flow guide valve core (7).

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