CN114183679A - Magnetic exhaust valve group and steam trap - Google Patents

Abstract

The invention relates to the technical field of drain valves, in particular to a magnetic exhaust valve group and a steam drain valve. The magnetic exhaust valve set comprises an exhaust valve sleeve, a screw plug, a soft magnet with Curie temperature of +/-DEG C, a permanent magnet, a first spring and an exhaust valve clack, wherein a gas inlet is formed in the side of one end of the exhaust valve sleeve, the screw plug is hermetically assembled in a port at the other end of the exhaust valve sleeve, the exhaust valve clack is slidably assembled in the exhaust valve sleeve, a spherical plug extending out of the port at one end of the exhaust valve sleeve is arranged at the end part of one end of the exhaust valve sleeve, the soft magnet is arranged at the other end of the exhaust valve clack, the permanent magnet is embedded in the end part, extending into the exhaust valve sleeve, of the screw plug, the first spring is sleeved outside the other end of the exhaust valve clack, and two ends of the first spring are respectively abutted against one end of the exhaust valve clack and the end part of the screw plug. The advantages are that: the magnetic exhaust valve group can change the adsorption effect of magnetic force according to the change of temperature, so that a gas inlet is opened or blocked.

Description

Magnetic exhaust valve group and steam trap

Technical Field

The invention relates to the technical field of drain valves, in particular to a magnetic exhaust valve group and a steam drain valve.

Background

With the development of national economy and the continuous promotion of energy conservation and emission reduction, steam becomes indispensable in many fields as an important secondary energy source, and is applied to a large number of production processes in industries such as food processing, medical treatment and health, papermaking, textile, printing and dyeing and the like. However, steam can generate a large amount of condensed water in the heating process, the condensed water needs to be discharged in time to ensure the normal operation of the steam equipment, and the drainage also needs to prevent the loss of the steam, so that the energy waste is avoided. The lever float type steam trap is widely used as a self-operated trap.

Disclosure of Invention

The invention aims to solve the technical problem of providing a magnetic exhaust valve group and a steam trap, and effectively overcomes the defects of the prior art.

The technical scheme for solving the technical problems is as follows:

a magnetic exhaust valve set comprises an exhaust valve sleeve, a screw plug, a soft magnet with the Curie temperature of 95 +/-5 ℃, a permanent magnet, a first spring and an exhaust valve clack, wherein a gas inlet is formed in the side of one end of the exhaust valve sleeve, the screw plug is assembled in a port at the other end of the exhaust valve sleeve in a sealing mode, the exhaust valve clack is assembled inside the exhaust valve sleeve in a sliding mode, a spherical plug extending out of a port at one end of the exhaust valve sleeve is arranged at the end of one end of the exhaust valve clack, the soft magnet is installed at the other end of the exhaust valve clack, the permanent magnet is embedded in the end of one end, extending into the exhaust valve sleeve, of the screw plug, the first spring is sleeved outside the other end of the exhaust valve clack, and two ends of the first spring are respectively abutted against one end of the exhaust valve clack and the end of the screw plug.

The beneficial effects are that: structural design is reasonable, and this magnetic force exhaust valve group can change the adsorption effect of magnetic force according to the change of temperature to open or plug up gas inlet.

Also provides a steam trap, which comprises a valve body, a valve cover and a valve core, wherein the valve body is internally provided with a fluid inlet channel and a fluid discharge channel which respectively extend to the end part of one end of the valve body, the valve cover is of a shell structure with an open end, the open end of the valve cover is hermetically connected with one end of the valve body, the valve core is detachably assembled at the fluid discharge channel at one end of the valve body, the valve core is provided with an inner cavity communicated with the fluid discharge channel, the upper end and the lower end of one end of the valve core, which corresponds to the interior of the valve cover, are respectively provided with an exhaust port and a liquid discharge port communicated with the inner cavity of the valve core, the exhaust port is internally provided with the magnetic exhaust valve group as claimed in the claim, the valve core is provided with an airflow channel communicated with the gas inlet, the liquid discharge port is hinged with a floating ball through a connecting rod, the connecting rod is provided with a valve clack component close to the hinged part, and the floating ball moves up and down under the buoyancy force, and drives the valve clack component to block or open the liquid discharge port.

On the basis of the technical scheme, the invention can be further improved as follows.

Furthermore, an embedded filter screen is arranged in the fluid inlet channel.

Furthermore, an opening communicated with the inner cavity of the valve core is formed in one end, corresponding to the fluid discharge channel, of the valve core, a sealing seat is plugged at the opening, the sealing seat is embedded into an assembly groove matched with the channel opening of the fluid discharge channel, and a fluid outlet communicated with the fluid discharge channel and the inner cavity of the valve core is arranged in the sealing seat in a penetrating mode.

Furthermore, the device also comprises a flow guide pipe, and one end of the flow guide pipe penetrates through the fluid outlet in a sealing manner.

Further, a valve seat is arranged in the liquid outlet, a fluid channel communicated with the inner cavity of the valve core penetrates through the valve seat, and the valve clack assembly is used for plugging or opening a channel port of the fluid channel.

Further, the valve clack assembly comprises a liquid discharge valve sleeve, a floating valve clack and a second spring, one end of the liquid discharge valve sleeve is open and extends towards a channel opening of a fluid channel of the valve seat, the other end of the liquid discharge valve sleeve is fixed close to a hinged part of the connecting rod, the floating valve clack is a column member and is assembled in the liquid discharge valve sleeve in a sliding mode, a spherical plug used for plugging or opening the opening at one end of the liquid discharge valve sleeve is arranged at one end of the floating valve clack, the second spring is sleeved outside the other end of the floating valve clack, and two ends of the second spring are respectively abutted against the liquid discharge valve sleeve and the spherical plug at one end of the floating valve clack.

Furthermore, one end of the flow guide pipe, which is far away from the valve body, is connected with a check valve group.

Further, the upper end of the valve cover is provided with a detection port with a plug, and the lower end of the valve cover is provided with a sewage outlet with a plug

The beneficial effects are that: the density difference principle of condensed water and steam is utilized, the floating ball floats or sinks along with the change of the amount of the condensed water in the valve, the amplification device of the floating ball lever is driven and depended on to control the liquid discharge, the function of draining and blocking steam is realized, meanwhile, the opening and closing of the exhaust valve clack are controlled by the magnetic transformation principle of the soft magnet above and below the Curie temperature, cold air in the valve is timely discharged, meanwhile, hot steam is prevented from being leaked, and the waste of steam energy is effectively avoided.

Drawings

FIG. 1 is a sectional view of the magnetic exhaust valve assembly of the present invention;

FIG. 2 is a structural longitudinal cross-sectional view of the steam trap of the present invention;

FIG. 3 is a cross-sectional view of the structure of a steam trap in accordance with the present invention;

FIG. 4 is an enlarged view of the connection between the float and the connecting rod in the steam trap of the present invention;

FIG. 5 is a cross-sectional view of the configuration of a valve flap assembly in the steam trap of the present invention;

FIG. 6 is a schematic view of the check valve set of the steam trap of the present invention.

Fig. 7 is an external structural view of the magnetic exhaust valve set of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a valve body; 2. a valve cover; 3. a valve core; 4. a flow guide pipe; 5. a magnetic exhaust valve set; 6. a connecting rod; 8. a floating ball; 9. a valve flap assembly; 10. embedding a filter screen; 21. a detection port; 22. a sewage draining outlet; 31. a sealing seat; 41. a check valve group; 51. an exhaust valve housing; 52. a plug screw; 53. a soft magnetic body; 54. a permanent magnet; 55. a first spring; 56. an exhaust valve flap; 91. a drainage valve sleeve; 92. a floating valve flap; 93. a second spring; 101. a valve seat; 411. a check valve sleeve; 412. a steel ball; 413. an orifice plate; 414. an elastic collar.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.

Example 1

As shown in fig. 1, the magnetic exhaust valve set of the present embodiment is characterized in that: the exhaust valve comprises an exhaust valve sleeve 51, a screw plug 52, a soft magnet 53 with the Curie temperature of 95 +/-5 ℃, a permanent magnet 54, a first spring 55 and an exhaust valve flap 56, wherein a gas inlet is arranged on the side of one end of the exhaust valve sleeve 51, the screw plug 52 is hermetically assembled in the port at the other end of the exhaust valve sleeve 51, the exhaust valve flap 56 is slidably assembled in the exhaust valve sleeve 51, a spherical plug extending out of the port at one end of the exhaust valve sleeve 51 is arranged at one end of the exhaust valve flap 56, the soft magnet 53 is arranged at the other end of the exhaust valve flap 56, the permanent magnet 54 is embedded in the end of the screw plug 52 extending into the exhaust valve sleeve 51, the first spring 55 is sleeved outside the other end of the exhaust valve flap 56, and the two ends of the first spring are respectively abutted against one end of the exhaust valve flap 56 and the end of the screw plug 52.

In this embodiment, the magnetic force of the soft magnet 53 gradually decreases with the gradual increase of the temperature when the temperature is below the curie temperature, so that in a gas environment, if the gas temperature is low, the magnetic force of the soft magnet 53 is strong, and the adsorption capacity with the permanent magnet 54 is good, in this state, the soft magnet 53 and the permanent magnet 54 are adsorbed, the first spring 55 is compressed, the gas inlet and the port at one end of the exhaust valve sleeve 51 are both opened, and low-temperature gas can enter through the gas inlet and be exhausted through the port at one end of the exhaust valve sleeve 51; when the temperature gradually rises, the magnetic force gradually decreases, the adsorption force between the soft magnet 53 and the permanent magnet 54 gradually decreases, the exhaust valve flap 56 gradually moves towards one end port of the exhaust valve sleeve 51, until the magnetic force gradually disappears or the magnetic force is smaller than the first spring 55, the exhaust valve flap 56 can move to block the gas inlet, high-temperature environment gas can not enter through the gas inlet, gas blocking is achieved, the magnetic exhaust valve group can change the adsorption effect of the magnetic force according to the change of the temperature, and therefore the gas inlet is effectively opened or blocked.

In this embodiment, the screw plug 52 is used to seal the port, thereby facilitating later-stage disassembly and replacement.

Example 2

As shown in fig. 2, 3, 4 and 7, the steam trap of the present embodiment includes a valve body 1, a valve cover 2 and a valve core 3, wherein the valve body 1 is provided with a fluid inlet channel and a fluid outlet channel respectively extending to an end portion of the valve body 1, the valve cover 2 is a shell structure with an open end, the open end of the valve cover 2 is hermetically connected to an end of the valve body 1, the valve core 3 is detachably mounted at the fluid outlet channel at an end of the valve body 1, the valve core 3 has an inner cavity communicated with the fluid outlet channel, an upper end and a lower end of the valve core 3 corresponding to an end inside the valve cover 2 are respectively provided with an air outlet and a liquid outlet communicated with the inner cavity, the air outlet is mounted with the magnetic air outlet valve set 5 as in embodiment 1, the valve core 3 is provided with an air flow channel communicated with the air inlet, and the liquid outlet is hinged with a floating ball 8 (specifically, the liquid discharge port is hinged with a connecting rod 6, one end of the connecting rod 6, which is far away from the liquid discharge port, is connected with a floating ball 8), a valve clack assembly 9 is arranged at the position, which is close to the hinged position, of the connecting rod 6, and the floating ball 8 moves up and down under the buoyancy force and drives the valve clack assembly 9 to seal or open the liquid discharge port.

In this embodiment, under normal conditions, the temperature in the valve cap 2 is low (ambient temperature), the soft magnet 53 is adsorbed by the permanent magnet 54, the exhaust valve flap 56 of the magnetic exhaust valve set 5 opens the gas inlet, when in use, the mixed fluid of steam and condensed water enters through the fluid inlet channel of the valve body 1, and then enters into the valve cap 2, the condensed water is remained in the cavity of the valve cap 2, the liquid in the cavity of the valve cap 2 is gradually accumulated until the liquid level gradually acts on the floating ball 8 to make it float upwards, the floating ball 8 floats upwards to drive the valve flap assembly 9 to open the liquid discharge port, the liquid in the valve cap 2 is discharged through the liquid discharge port, the inner cavity of the valve core 3 and the fluid discharge channel, in the whole process, if the temperature of the entering steam is low, the low-temperature gas is discharged through the opened gas inlet, the inner cavity of the valve core 3 and the fluid discharge channel, if the temperature of the entering steam is high, the magnetic force of the soft magnet 53 is weakened rapidly, the first spring 55 drives the exhaust valve clack 56 to slide to seal the gas inlet (meanwhile, the spherical plug at one end of the exhaust valve clack 56 seals one end port of the exhaust valve sleeve 51), high-temperature steam cannot run off from the gas inlet, the whole technical scheme utilizes the density difference principle of condensed water and steam to enable the floating ball 8 to float or sink along with the change of the amount of condensed water in the valve, so that the liquid discharge is controlled, the water discharge and steam blocking functions are realized, meanwhile, the opening and closing of the exhaust valve clack 56 are controlled by utilizing the magnetic transition principle of the soft magnet 53 above and below the Curie temperature, cold air in the valve is discharged in time, meanwhile, the leakage of hot steam is prevented, and the waste of steam energy is effectively avoided.

In this embodiment, case 3 is the stand-alone core, and case 3 passes through socket head cap screw to be fixed at 1 tip of valve body, adopts independent case part can choose better material and manufacturing process for use, improves its performance and life, reduces the manufacturing degree of difficulty of whole valve simultaneously, practices thrift the overall cost again.

In this embodiment, the flange plates that are butted with each other are arranged at one end of the valve body 1 and the open end of the valve cover 2, a sealing ring groove is annularly arranged at the butt joint of the inner cavity between the two, a sealing ring is arranged in the sealing ring groove, and the flange plates of the two are fixed by bolt connection, so that the two are hermetically connected.

In a preferred embodiment, an in-line filter 10 is provided in the fluid inlet passage.

In the above embodiment, in-line filter 10 is used to filter particulate matter that enters the fluid inlet passage from within the vapor line.

Generally, the embedded filter 10 is a cylindrical member adapted to the fluid inlet passage, and has a threaded connection seat at one end thereof, and an assembly opening inserted into the fluid inlet passage at the other end of the valve body 1, and the embedded filter 10 is inserted into the fluid inlet passage from the assembly opening and is screwed with the threads on the inner wall of the assembly opening through the threaded connection seat.

It should be added that: the passage ports of the fluid inlet passage and the fluid outlet passage are respectively distributed on two sides of the valve body 1 and are L-shaped passages.

In a preferred embodiment, an opening communicating with the inner cavity of the valve body 3 is provided at one end of the valve body corresponding to the fluid discharge passage, a seal seat 31 is sealed at the opening, the seal seat 31 is fitted into a fitting groove fitted at the passage opening of the fluid discharge passage, and a fluid outlet communicating the fluid discharge passage and the inner cavity of the valve body 3 is provided through the seal seat 31.

In the above embodiment, the sealing seat 31 can block the opening of the valve element 3 on the one hand, and facilitates the tight connection between the valve element 3 and the passage opening of the fluid discharge passage on the other hand.

As a preferable embodiment, the fluid guide device further includes a fluid guide tube 4, and one end of the fluid guide tube 4 penetrates the fluid outlet in a sealed manner.

In the above embodiment, the design of the flow guide pipe 4 can protect the internal flow passage of the valve body 1 from cavitation damage, and the service life is prolonged.

In a preferred embodiment, a valve seat 101 is installed in the drain port, a fluid passage communicating with the inner cavity of the valve body 3 is formed through the valve seat 101, and the valve flap assembly 9 is used for closing or opening the passage port of the fluid passage.

In the above embodiment, the valve seat 101 is designed to be matched with the valve clack assembly 9, and the valve seat and the valve clack assembly can be well matched tightly, so that the liquid discharge port can be effectively plugged.

As a preferred embodiment, as shown in fig. 5, the valve flap assembly 9 includes a liquid discharge valve sleeve 91, a floating valve flap 92 and a second spring 93, wherein one end of the liquid discharge valve sleeve 91 is open and extends toward a passage opening of a fluid passage of the valve seat 101, the other end of the liquid discharge valve sleeve 91 is fixed to a portion of the connecting rod 6 near the hinge joint, the floating valve flap 92 is a cylindrical member and is slidably mounted in the liquid discharge valve sleeve 91, one end of the floating valve flap 92 is provided with a ball plug for blocking or opening the opening of the one end of the liquid discharge valve sleeve 91, the other end of the floating valve flap 92 is externally sleeved with the second spring 93, and both ends of the second spring 93 respectively abut against the ball plugs at one ends of the liquid discharge valve sleeve 91 and the floating valve flap 92.

In the above embodiment, the connecting rod 6 is allowed to rotate up and down under the action of external force, under normal conditions, the floating ball 8 does not receive buoyancy, under the action of gravity, the floating ball 8 and the connecting rod 6 are in a low position, and the spherical plug of the floating valve flap 92 extends into the passage opening of the fluid passage of the valve seat 101, in cooperation with the gravity action of the connecting rod 6 and the floating ball 8, the second spring 93 is in a micro-compression deformation state, the spherical plug of the floating valve flap 92 tightly plugs the passage opening of the fluid passage of the valve seat 101, when the accumulated liquid in the inner cavity of the valve cover 2 gradually increases to act on the floating ball 8, the floating ball 8 moves up under the action of buoyancy, in the moving up process, the liquid discharge valve sleeve 91 is driven to move, so that the whole valve flap assembly 9 is far away from the valve seat 101, that is the spherical plug of the floating valve flap 92 leaves the passage opening of the fluid passage of the valve seat 101, and the passage opening is opened, the liquid will enter the inner cavity of the valve core 3 through the passage port and is discharged from the fluid discharge passage, the whole valve clack component 9 adopts a floating type valve clack (the elastic action of the second spring 93 is floating), the sealing of the port of the floating valve clack 92 and the valve seat 101 can be better realized, the impact force when the valve seat 101 is contacted is reduced, and the durability of the valve seat 101 and the floating valve clack 92 is improved.

In a preferred embodiment, a check valve group 41 is connected to one end of the delivery tube 4 remote from the valve body 1.

In the above embodiment, the check valve block 41 provides a function of preventing condensed water and air from flowing backward to the inside of the trap and the steam using device.

As shown in fig. 6, the check valve set 41 includes a check valve sleeve 411, a steel ball 412, an orifice plate 413 and an elastic collar 414, the check valve sleeve 411 is provided with a channel axially penetrating through the check valve sleeve, the diameter of one end of the channel is smaller than that of the other end, and the connection between two channel sections with different diameters is in conical surface transition, the steel ball 412 is assembled in the channel with a larger diameter, the diameter of the channel is larger than that of the channel with a smaller diameter, the orifice plate 413 is hermetically installed at the other end of the channel, and the installed orifice plate 413 is fixed at the other end of the channel through the elastic collar 414 (specifically, an annular groove matched with the elastic collar 414 is annularly arranged on the inner wall at the other end of the channel, the elastic collar 414 is connected to the end face of the liquid inlet end of the orifice plate 413, and the outer edge of the orifice plate 413 is embedded into the annular groove), and the other end of the channel of the check valve sleeve 411 is connected and communicated with one end of the flow guide pipe 4, which is far away from the valve core 3.

In a preferred embodiment, the valve cover 2 has a detection port 21 with a stopper at the upper end thereof and a drain port 22 with a stopper at the lower end thereof.

In the above embodiment, the sewage draining outlet 22 is used for cleaning impurities and dirt in the valve, the detection port 21 is used for observing and confirming whether the inner part of the valve normally operates or not, the detection port can also be used as an assembly interface of a special detection device, and the sewage draining outlet 22 and the detection port 21 are all pre-closed by screw plugs.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (9)

1. The utility model provides a magnetic force exhaust valves which characterized in that: comprises an exhaust valve sleeve (51), a screw plug (52), a soft magnet (53) with Curie temperature of 95 +/-5 ℃, a permanent magnet (54), a first spring (55) and an exhaust valve flap (56), a gas inlet is arranged on the side of one end of the exhaust valve sleeve (51), the screw plug (52) is assembled in the port at the other end of the exhaust valve sleeve (51) in a sealing way, the exhaust valve clack (56) is slidably assembled inside the exhaust valve sleeve (51), and one end part of the valve body is provided with a spherical plug extending out of one end port of the exhaust valve sleeve (51), the soft magnet (53) is arranged at the other end of the exhaust valve flap (56), the permanent magnet (54) is embedded at one end part of the screw plug (52) extending into the exhaust valve sleeve (51), the first spring (55) is sleeved outside the other end of the exhaust valve clack (56), the two ends of the valve body are respectively abutted against one end of the exhaust valve flap (56) and the end of the screw plug (52).

2. A steam trap, characterized by: the electromagnetic exhaust valve comprises a valve body (1), a valve cover (2) and a valve core (3), wherein a fluid inlet channel and a fluid discharge channel which respectively extend to the end part of one end of the valve body (1) are arranged in the valve body (1), the valve cover (2) is of a shell structure with one open end, the open end of the valve cover is hermetically connected with one end of the valve body (1), the valve core (3) is detachably assembled at the fluid discharge channel at one end of the valve body (1), the valve core (3) is provided with an inner cavity communicated with the fluid discharge channel, the upper end and the lower end of one end of the valve core (3) corresponding to the interior of the valve cover (2) are respectively provided with an exhaust port and a liquid discharge port communicated with the inner cavity, the magnetic exhaust valve group (5) according to claim 1 is assembled in the exhaust port, the valve core (3) is provided with an air flow channel communicated with the air inlet, and the liquid discharge port is hinged with a floating ball (8) through a connecting rod (6), the connecting rod (6) is provided with a valve clack component (9) near the hinged position, the floating ball (8) moves up and down under the buoyancy force and drives the valve clack component (9) to plug or open the liquid discharge port.

3. A steam trap as defined in claim 2 wherein: an embedded filter screen (10) is arranged in the fluid inlet channel.

4. A steam trap as defined in claim 2 wherein: an opening communicated with the inner cavity of the valve core (3) is formed in one end, corresponding to the fluid discharge channel, of the valve core (3), a sealing seat (31) is plugged at the opening, the sealing seat (31) is embedded into an assembly groove matched with the channel opening of the fluid discharge channel, and a fluid outlet communicated with the fluid discharge channel and the inner cavity of the valve core (3) penetrates through the sealing seat (31).

5. A steam trap according to claim 4 wherein: the fluid guide device further comprises a guide pipe (4), and one end of the guide pipe (4) penetrates through the fluid outlet in a sealing mode.

6. A steam trap according to claim 5 wherein: one end of the flow guide pipe (4) far away from the valve body (1) is connected with a check valve group (41).

7. A steam trap as defined in claim 2 wherein: a valve seat (101) is arranged in the liquid discharge port, a fluid passage communicated with the inner cavity of the valve core (3) penetrates through the valve seat (101), and the valve clack assembly (9) is used for plugging or opening the passage port of the fluid passage.

8. A steam trap as defined in claim 7 wherein: valve clack subassembly (9) are including flowing back valve barrel (91), floating valve clack (92) and second spring (93), flowing back valve barrel (91) one end opening, and the orientation the access opening of the fluid passage of disk seat (101) extends, the other end of flowing back valve barrel (91) with connecting rod (6) are close to articulated department fixed, floating valve clack (92) are the cylinder component, and slide assembly in flowing back valve barrel (91), the one end of floating valve clack (92) is equipped with and is used for the shutoff or opens drainage valve barrel (91) one end open-ended globular end cap, its other end outside cover is equipped with second spring (93), the both ends of second spring (93) respectively with the globular end cap of flowing back valve barrel (91) and floating valve clack (92) one end offsets.

9. A steam trap according to any one of claims 2 to 8 wherein: the upper end of the valve cover (2) is provided with a detection port (21) with a plug, and the lower end of the valve cover is provided with a sewage draining port (22) with a plug.

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