CN217441351U - Drainage device and pipeline system - Google Patents

Abstract

The utility model relates to a drainage device and pipe-line system, drainage device includes the valve body, be provided with the import on the valve body, the export and the runner of intercommunication import and export, be provided with first case in the valve body, the second case, spring and memory spring, first case is connected in the valve body and has first closing surface, the movably position in the valve body of second case just has relative first side and second side, spring coupling is between first case and first side, memory spring connects between the inner wall of second side and valve body, when being higher than or equal to the settlement temperature, memory spring promotes the second case and removes and make first side laminate in first closing surface airtightly towards first case, with closed runner, when being less than the settlement temperature, the spring promotes the second case and keeps away from first closing surface and remove, with open the runner. Through above-mentioned technical scheme, the hydrophobic device that this disclosure provided can be according to the nimble hydrophobic switch of ambient temperature change, practices thrift the medium in the pipeline, reduces the human input.

Description

Drainage device and pipeline system

Technical Field

The present disclosure relates to the field of pipeline technology, and in particular, to a drainage device and a pipeline system.

Background

When the environmental temperature is reduced to below zero in winter, the end of a water pipeline exposed outdoors is easy to be frozen and cracked due to the fact that internal media cannot circulate, and therefore the pipeline is easy to leak after being thawed. However, in the actual implementation process, the day and night temperature difference is large in the cold-proof and anti-freezing period of part of areas, the ambient temperature in the day often rises to more than 5 ℃, a large amount of medium waste is still caused by keeping drainage, a large amount of workload is needed for frequent manual drainage every day, and the implementation of part of large-scale industrial occasions is difficult.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a hydrophobic means and pipe-line system, hydrophobic means can be according to the nimble hydrophobic switch of ambient temperature change, practices thrift the medium in the pipeline, reduces the human input.

In order to achieve the above object, according to a first aspect of the present disclosure, there is provided a drain device, including a valve body, the valve body being provided with an inlet, an outlet and a flow passage communicating the inlet and the outlet, the valve body being provided therein with a first valve core, a second valve core, a spring and a memory spring, the first valve core being connected to the valve body and having a first closing surface, the second valve core being movably located in the valve body and having a first side surface and a second side surface opposite to each other, the spring being connected between the first valve core and the first side surface, the memory spring being connected between the second side surface and an inner wall of the valve body, the memory spring being configured to: when the temperature is higher than or equal to the set temperature, the memory spring pushes the second valve core to move towards the first valve core and enables the first side face to be attached to the first closing face in a sealing mode so as to close the flow passage, and when the temperature is lower than the set temperature, the spring pushes the second valve core to move away from the first closing face so as to open the flow passage.

Optionally, the valve body has a first end and a second end opposite to each other in a first direction, the inlet is disposed at the first end, the outlet is disposed at the second end, a first chamber, a second chamber and a third chamber are disposed in the valve body, the first chamber, the second chamber and the third chamber are sequentially arranged from the first end to the second end, the diameters of the first chamber, the second chamber and the third chamber are sequentially decreased, the first valve core is disposed in the first chamber, the second valve core is movably disposed in the second chamber in the first direction, the memory spring is disposed in the third chamber and extends along the first direction together with the spring, and the flow passage includes a first flow passage, a second flow passage and a third flow passage, the first flow passage, the second flow passage and the third flow passage are sequentially communicated from the inlet to the outlet and are disposed between the first valve core and an inner wall of the first chamber, the second flow passage penetrates through the second valve core, and the third flow passage is disposed in the third chamber.

Optionally, the first valve core includes a first core and a first rod connected to each other along a first direction, the first core is connected to the valve body, the first closed surface is formed on an end surface of the first core facing one end of the first rod, an inwardly concave groove is formed in an outer side wall of the first core, and the first flow channel is formed between the groove and an inner wall of the first chamber;

the first rod body is provided with a first limiting block, one end of the spring is sleeved on the first rod body and is abutted against the first limiting block, and the other end of the spring is abutted against the second valve core.

Optionally, the outer side wall of the first core is provided with an external thread, and the inner wall of the first cavity is provided with an internal thread matched with the external thread.

Optionally, the number of the grooves is plural and arranged at intervals in a circumferential direction of the first core.

Optionally, the second valve core includes a second core body and a second rod body, the second core body has an installation cavity extending along a first direction, one end of the first rod body, which is away from the first core body, is inserted into the installation cavity, the first limiting block is located in the installation cavity, the spring is disposed in the installation cavity, and two ends of the spring respectively abut against the first limiting block and an inner wall of the installation cavity;

the second rod body is fixedly connected to one side of the second core body, which is far away from the first valve core, one end of the memory spring is sleeved on the second rod body and abuts against the second core body, and the other end of the memory spring abuts against the inner wall of the third cavity.

Optionally, the second flow passages are plural in number and arranged at intervals in the circumferential direction of the second core.

According to a second aspect of the present disclosure, a piping system is provided, where the piping system includes a medium pipe and one or more drain pipes that are communicated with the medium pipe and are arranged at intervals, the drain pipe includes a first control valve, a first connection pipe, a second connection pipe, and the drain device described above, one end of the first control valve is used to connect the medium pipe through the first connection pipe, and the other end of the first control valve is connected to an inlet of a valve body of the drain device through the second connection pipe.

Optionally, the drain pipeline further includes a drain pipe, a drain tank, and a medium recovery container, one end of the drain pipe is communicated with the outlet of the valve body of the drain device, the other end of the drain pipe is located above the opening of the drain tank, and the opening of the medium recovery container is upward and located below the drain outlet of the drain tank.

Optionally, the drain line further comprises a second control valve, and the second control valve and the drain device are connected in parallel between the second connecting pipe and the drain pipe.

Through the technical scheme, the drainage device provided by the disclosure is convenient for a medium to pass through by arranging the flow channel between the inlet and the outlet of the valve body, and is characterized in that the valve body is internally provided with the first valve core, the second valve core, the spring and the memory spring, wherein the first valve core is connected to the valve body, the second valve core can move relative to the valve body, the first valve core is provided with a first closing surface, the second valve core is provided with a first side surface and a second side surface which are opposite to each other, the spring is positioned between the first side surface of the first valve core and the first side surface of the second valve core, the memory spring is positioned between the second side surface of the second valve core and the inner wall of the valve body, and the memory spring can push the second valve core to move towards the first valve core when the temperature is higher than or equal to the set temperature, so that the first side surface can be attached to the first closing surface in a sealing manner, and the flow channel can be closed; when being less than the settlement temperature, the spring can promote the second valve core and keep away from first closed surface and remove, and then can open the runner, like this, when ambient temperature is less than the settlement temperature, hydrophobic device's runner keeps the open mode to medium flow in the hydrophobic pipeline under the low temperature condition has been guaranteed, avoids the pipeline frost crack, when ambient temperature is higher than the settlement temperature, hydrophobic device's runner keeps the closed mode, thereby avoid the waste of unnecessary medium resources, and can save a large amount of human costs.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

fig. 1 is a schematic structural diagram of a hydrophobic device provided in an embodiment of the present disclosure;

FIG. 2 is a sectional view taken along line A-A of FIG. 1;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 2, wherein the spring is not shown;

fig. 4 is a schematic structural diagram of a piping system provided by an embodiment of the present disclosure.

Description of the reference numerals

100-a hydrophobic means; 110-a valve body; 111-an inlet; 112-an outlet; 113-a first end; 114-a second end; 115-a first chamber; 116-a second chamber; 117-third chamber; 118-a first sidewall surface; 119-an annular boss; 120-a first valve spool; 121-a first closing face; 122 — a first core; 123-a first rod; 124-a first stopper; 125-inner hexagonal groove; 126-a groove; 130-a second spool; 131-a second core; 132-a second rod; 133-a mounting cavity; 134-a first side; 135-a second side; 140-a spring; 150-memory spring; 161-a first flow channel; 162-a second flow channel; 163-third flow path; 200-a drain line; 210-a first control valve; 220 a first connecting pipe; 230-a second connecting tube; 240-a hydrophobic tank; 250-a media recovery vessel; 260-a second control valve; 270-a drain pipe; 300-medium line.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, the use of directional terms such as "inner and outer" means "inner and outer" with respect to the corresponding profile of the component itself, unless otherwise specified. The "X direction" in the drawings indicates the first direction. In addition, the terms "first," "second," and the like, as used herein, are intended to distinguish one element from another, and are not necessarily sequential or significant. Furthermore, in the following description, when referring to the figures, the same reference numbers in different figures denote the same or similar elements, unless otherwise explained. The foregoing definitions are provided to illustrate and describe the present disclosure only and should not be construed to limit the present disclosure.

According to a specific embodiment of the first aspect of the present disclosure, referring to fig. 1 to 4, a water trap is provided, which includes a valve body 110, the valve body 110 is provided with an inlet 111, an outlet 112, and a flow passage communicating the inlet 111 and the outlet 112, a first valve element 120, a second valve element 130, a spring 140, and a memory spring 150 are arranged in the valve body 110, the first valve element 120 is connected to the valve body 110 and has a first closing surface 121, the second valve element 130 is movably located in the valve body 110 and has a first side surface 134 and a second side surface 135 which are opposite to each other, the spring 140 is connected between the first valve element 120 and the first side surface 134, the memory spring 150 is connected between the second side surface 135 and an inner wall of the valve body 110, and the memory spring 150 is configured to: when the temperature is higher than or equal to the set temperature, the memory spring 150 pushes the second valve element 130 to move towards the first valve element 120 and make the first side surface 134 tightly attached to the first closing surface 121 to close the flow passage, and when the temperature is lower than the set temperature, the spring 140 pushes the second valve element 130 to move away from the first closing surface 121 to open the flow passage.

By the technical scheme, the drainage device provided by the present disclosure facilitates the medium to pass through by arranging the flow passage between the inlet 111 and the outlet 112 of the valve body 110, by providing the first spool 120 connected to the valve body 110, the second spool 130 movable relative to the valve body 110, and the spring 140 and the memory spring 150, since the first valve spool 120 has the first closing surface 121 thereon, the second valve spool 130 has the first and second opposite side surfaces 134 and 135, the spring 140 is located between the first valve spool 120 and the first side surface 134 of the second valve spool 130, the memory spring 150 is located between the second side surface 135 of the second valve spool 130 and the inner wall of the valve body 110, and since the memory spring 150 can push the second spool 130 to move toward the first spool 120 when it is higher than or equal to the set temperature, so that the first side surface 134 can be closely attached to the first closing surface 121, and the flow passage can be closed; when the temperature is lower than the set temperature, the spring 140 can push the second valve element 130 to move away from the first closing surface 121, so that the flow channel can be opened, and thus, when the ambient temperature is lower than the set temperature, the flow channel of the drainage device 100 keeps an open state, thereby ensuring that the medium in the drainage pipeline 200 flows under the low-temperature condition, avoiding frost crack of the pipeline, and when the ambient temperature is higher than the set temperature, the flow channel of the drainage device 100 keeps a closed state, thereby avoiding unnecessary medium resource waste, and saving a large amount of labor cost.

In some embodiments, the Shape Memory Alloy (SMA) spring is used as the Memory spring 150, and is made of nickel titanium (Ni-Ti) alloy, the effective working temperature range is 0 ℃ to 100 ℃, the reaction speed is very fast, the temperature adjustment is sensitive, and the Shape Memory alloy springs SMA with different specifications of deformation quantity and elasticity can be customized according to the pressure of a medium in a pipeline, so as to meet the force required by the action of the second valve element 130 in different application scenes, and thus the closing of the flow channel in the hydrophobic device 100 can be effectively adjusted according to the temperature change. For example, in a specific embodiment, the spring 140 is a general tension spring, the memory spring 150 is formed by winding a TiNi-03 memory alloy wire, the TiNi-03 memory alloy wire utilizes a one-way memory effect of the shape memory alloy, the temperature-sensitive driving element can automatically recover to the original length along with the temperature rise, the martensite phase of the shape memory alloy is a soft phase at a low temperature, the parent phase is a hard phase at a high temperature, when the medium temperature is less than 5 ℃, the soft phase state of the shape memory alloy spring SMA is compressed by the general tension spring, and the second valve core 130 is pushed away from the first closed surface 121 under the elastic force of the general tension spring, so that the flow channel is in an open state to be capable of draining water; when the temperature of the medium is higher than or equal to 5 ℃, the shape memory alloy spring SMA recovers the hard phase state to jack the common tensioning spring, the automatic second valve core 130 is driven to move towards the first valve core 120, and the first side surface 134 is attached to the first closing surface 121, so that the flow channel is automatically closed.

In the embodiment provided by the present disclosure, referring to fig. 1 and 2, the valve body 110 may have a first end 113 and a second end 114 opposite to each other along a first direction, the inlet 111 is disposed on the first end 113, the outlet 112 is disposed on the second end 114, a first chamber 115, a second chamber 116, and a third chamber 117 are disposed in the valve body 110, the first chamber 115, the second chamber 116, and the third chamber 117 are sequentially disposed from the first end 113 toward the second end 114, and have diameters decreasing sequentially, the first spool 120 is disposed in the first chamber 115, the second spool 130 is movably disposed in the second chamber 116 along the first direction, the memory spring 150 is disposed in the third chamber 117 and extends along the first direction together with the spring 140, the flow passages include a first flow passage 161 communicating sequentially from the inlet 111 toward the outlet 112 and located between the first spool 120 and the inner wall of the first chamber 115, a second flow passage 162 passing through the second spool 130, and a third flow passage 163 located in the third chamber 117. Since the first, second and third chambers 115, 116, 117 are arranged in sequence from the first end 113 towards the second end 114, the medium is able to pass from the inlet 111 through the first, second and third chambers 115, 116, 117 in sequence and out of the outlet 112. Since the second spool 130 is movably disposed in the second chamber 116 along the first direction, the memory spring 150 is disposed in the third chamber 117 and extends along the first direction together with the spring 140, so that the spring 140 can press the memory spring 150 along the first direction under low temperature condition, so that the second spool 130 is far away from the first spool 120 to open the flow passage; in case of temperature increase, the memory spring 150 presses the spring 140 in the first direction to make the second spool 130 approach the first spool 120 to shut off the flow passage. Since the first chamber 115 accommodates the first valve spool 120 and the first flow passage 161 therein, the second valve spool 130 is movably connected to the second chamber 116, the second flow passage 162 passes through the second valve spool 130, and the third flow passage 163 is located in the third chamber 117, diameters of the first chamber 115, the second chamber 116, and the third chamber 117 are sequentially decreased, so that the first flow passage 161, the second flow passage 162, and the third flow passage 163 are sequentially communicated.

The first valve core 120 may include a first core 122 and a first rod 123 connected in a first direction, the first core 122 is connected to the valve body 110, a first closing surface 121 is formed on an end surface of the first core 122 facing one end of the first rod 123, an inner concave groove 126 is formed on an outer side wall of the first core 122, and a first flow channel 161 is formed between the groove 126 and an inner wall of the first cavity; the first rod 123 is provided with a first stopper 124, one end of the spring 140 is sleeved on the first rod 123 and abuts against the first stopper 124, and the other end of the spring 140 abuts against the second valve core 130. Because the spring 140 is disposed between the first stopper 124 and the second valve core 130 on the first rod 123, when the temperature is lower than the set temperature, the memory spring 150 is in a free state, the spring 140 applies a force to the second valve core 130, the second valve core 130 is driven to be away from the first closing surface 121, and the flow channel is open; when the temperature is higher than the set temperature, the memory spring 150 restores the memory and applies a force to the first stopper 124 to drive the second valve core 130 to move toward the first closing surface 121, and the first flow channel 161 is cut off when the first side surface 134 of the second valve core 130 is attached to the first closing surface 121.

To enable the first valve spool 120 to be positionally adjustably connected to the valve body 110 in the first direction, the outer side wall of the first core 122 may also be provided with an external thread, and the inner wall of the first chamber 115 is provided with an internal thread that mates with the external thread. The end surface of the first core 122 facing the inlet 111 is provided with an inner hexagonal groove 125, and a standard inner hexagonal wrench is inserted into the inner hexagonal groove 125 to rotate the first core 122, so that the first valve core 120 can move relative to the valve body 110 along the first direction and be fixed at a proper position in the valve body 110. The first valve core 120 is adjustably fixed to the valve body 110 along the first direction, which facilitates adjusting the water output, and facilitates adjusting the force balance between the spring 140 and the memory spring 150 to achieve the optimal water output effect.

Further, the number of the grooves 126 may be plural and arranged at intervals in the circumferential direction of the first core 122. The plurality of grooves 126 arranged at intervals in the circumferential direction of the first core 122 enables a plurality of first flow passages 161 to be formed in the first core 122 in order to increase the amount of inflow of water. The cross section of the groove 126 perpendicular to the first direction may be any suitable shape as long as it can facilitate the flow of the medium, and the present disclosure is not particularly limited thereto.

In the specific embodiment provided in the present disclosure, referring to fig. 2, the second valve spool 130 includes a second core 131 and a second rod 132, the second core 131 has a mounting cavity 133 extending along a first direction, one end of the first rod 123 away from the first core 122 is inserted into the mounting cavity 133, the first stopper 124 is located in the mounting cavity 133, the spring 140 is disposed in the mounting cavity 133, and two ends of the spring respectively abut against the inner walls of the first stopper 124 and the mounting cavity 133; the second rod 132 is fixedly connected to a side of the second core 131 away from the first valve core 120, one end of the memory spring 150 is sleeved on the second rod 132 and abuts against the second core 131, and the other end abuts against an inner wall of the third chamber 117. The outer side wall of the second core 131 can slide along the first direction relative to the inner wall of the valve body 110, and because the end of the first rod 123 away from the first core 122 and the first stopper 124 are both located in the mounting cavity 133, the spring 140 is disposed in the mounting cavity 133, and two ends of the spring 140 respectively abut against the inner walls of the first stopper 124 and the mounting cavity 133, and the memory spring 150 is sleeved on the second rod 132, and two ends of the memory spring 150 respectively abut against the inner walls of the second core 131 and the third cavity 117, so that when the ambient temperature is lower than the set temperature, the memory spring 150 is in a free state, and the spring 140 located in the mounting cavity 133 presses the memory spring 150 and pushes the second core 131 to move in a direction away from the first valve core 120, so as to open the first flow channel 161. When the ambient temperature is higher than the set temperature, the memory spring 150 restores to memory and presses the spring 140 in the mounting cavity 133, and pushes the second core 131 toward the first valve core 120 to close the first flow passage 161.

In order to stabilize the memory spring 150, the third chamber 117 may have a first side wall 118 opposite to the second core 131, the outlet 112 penetrates through the second end 114 and the first side wall 118, an annular boss 119 is arranged on the first side wall 118 around the outlet 112, and an end of the memory spring 150 facing away from the second core 131 is sleeved on the annular boss 119. Thus, one end of the memory spring 150 is sleeved on the second rod 132 and abuts against the second core 131, and the other end is sleeved on the annular boss 119 and abuts against the inner wall of the valve body 110, so that the memory spring 150 can be better positioned and stably compressed or expanded along the first direction.

Further, referring to fig. 3, the second flow passages 162 are plural in number and arranged at intervals in the circumferential direction of the second core 131. The plurality of second flow passages 162 arranged at intervals in the circumferential direction of the second core 131 can facilitate an increase in the water repellency. The shape of the cross section of the second flow channel 162 perpendicular to the first direction may be circular, square, or any other suitable shape.

On the basis of the above technical solution, referring to fig. 4, the present disclosure further provides a piping system, which includes a medium pipeline 300 and one or more drain pipelines 200 that are connected to the medium pipeline 300 and are arranged at intervals, where the drain pipeline 200 includes a first control valve 210, a first connection pipe 220, a second connection pipe 230, and the above-mentioned drain device 100, one end of the first control valve 210 is used for connecting the medium pipeline 300 through the first connection pipe 220, and the other end is connected to the inlet 111 of the valve body 110 of the drain device 100 through the second connection pipe 230. The medium in the medium pipeline 300 may be water, steam, compressed air, or the like, the first control valve 210 may be used in cooperation with the drainage device 100 in the drainage pipeline 200, and the first control valve 210 may be a stop valve, an electric valve, or any other suitable control valve, and may perform throttling and pressure reduction according to the medium with different pressure levels in the pipeline, so as to ensure that the drainage device 100 operates within a working pressure range. The first control valve 210 may also act as an isolation valve, maintaining a fully closed state during non-freezing periods. For large industrial complex pipelines, a plurality of the above-mentioned drainage pipes 200 can be used in combination to realize the multi-point arrangement of the drainage device 100 at multiple positions. For example, N drainage pipelines 200 with drainage devices 100 are arranged on a medium pipeline 300 at intervals, so that the medium pipeline can be divided into N +1 sections, and automatic drainage in sections of a large-scale pipeline system is realized.

The drain line 200 may further include a drain pipe 270, a drain tank 240, and a medium recovery container 250, wherein one end of the drain pipe 270 is connected to the outlet 112 of the valve body 110 of the drain device 100, the other end is located above the opening of the drain tank 240, and the opening of the medium recovery container 250 is upward and located below the drain opening of the drain tank 240. The discharge pipe 270 guides the medium flowing out from the outlet 112 of the drainage device 100 to the drainage tank 240, and then the medium is collected into the medium recovery container 250 through the drainage tank 240, so as to facilitate the medium recovery and reuse.

Further, the drain line 200 may further include a second control valve 260, and the second control valve 260 and the drain device 100 are connected in parallel between the second connection pipe 230 and the drain pipe 270. The second control valve 260 may act as a bypass valve for the trap 100, and may open the second control valve 260 to remain in a normally open trap state in the event of a trap failure or other necessity.

The method can be suitable for pipelines with different media and possible water storage, such as steam drainage pipelines of longer pipelines, which are easy to accumulate condensed water, low-position drainage points of compressed air, which are easy to accumulate water, long-distance water pipes which are not communicated with dead corners and the like. When the water drain device is used, a hexagon wrench is inserted into the hexagonal groove 125 of the first valve core 120 to rotate the first valve core 120, the water inflow of the first flow passage 161 is adjusted, the spring 140 and the memory spring 150 are adjusted to proper positions, then one end of the first connecting pipe 220 is connected with the medium pipeline 300, the other end of the first connecting pipe is connected with the first control valve 210, one end of the second connecting pipe 230 is connected with the first control valve 210, the other end of the second connecting pipe is connected with the inlet 111 of the water drain device 100, one end of the discharge pipe 270 is connected with the outlet 112 of the water drain device 100, the other end of the discharge pipe is communicated to the upper part of the water drain groove 240, and the second control valve 260 and the water drain device are connected in parallel. During entering the cold-proof and freeze-proof period, according to the requirement of an industrial field, when pipelines such as outdoor compressed air and steam pipelines need to be kept at a small opening degree for drainage during the cold-proof and freeze-proof period, firstly, the medium pressure in the drainage device 100 is controlled within the working pressure range of the drainage device 100 through the first control valve 210, whether the drainage quantity meets the freeze-proof requirement is confirmed through the second control valve 260, then, the second control valve 260 is closed, and the drainage device 100 is put into operation. When the medium temperature is lower than the set temperature, the drainage device 100 is in an open state, and the automatic drainage function is realized; when the medium temperature is higher than the set temperature, the drainage device 100 is in a closed state, and the water saving function is realized. During non-freezing periods, the first control valve 210 may also act as an isolation valve, maintaining a fully closed state. Second control valve 260 may be manually maintained in a normally open drain state in the event of an automatic steam trap failure or if necessary. The medium is recovered and reused in the lower part of the drain tank 240 by the medium recovery container 250. Here, the second connection pipe 230 may be screwed with an internal thread on an inner wall of the first chamber 115 of the valve body 110 of the hydrophobic device 100, or an external thread may be provided on an outer wall of the first end 113 of the valve body 110 to be screwed with the second connection pipe 230, which is not particularly limited in this disclosure. Additionally, external threads may be provided on the outer wall of the second end 114 of the valve body 110 to threadably couple with the drain 270. Alternatively, the outer wall surface of the valve body 110 may include a first step surface and a second step surface having a reduced diameter, which are sequentially disposed from the first end 113 toward the second end 114, the first step surface being provided with an external thread for being threadedly coupled to the second connection pipe 230, and the second step surface being provided with an external thread for being threadedly coupled to the discharge pipe 270.

The preferred embodiments of the present disclosure are described in detail above with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details in the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims (10)

1. A water drainage device is characterized by comprising a valve body, wherein an inlet, an outlet and a flow passage communicated with the inlet and the outlet are arranged on the valve body, a first valve core, a second valve core, a spring and a memory spring are arranged in the valve body, the first valve core is connected to the valve body and provided with a first closing surface, the second valve core is movably located in the valve body and provided with a first side surface and a second side surface which are opposite to each other, the spring is connected between the first valve core and the first side surface, the memory spring is connected between the second side surface and the inner wall of the valve body, and the memory spring is structured as follows: when the temperature is higher than or equal to the set temperature, the memory spring pushes the second valve core to move towards the first valve core and enables the first side face to be attached to the first closing face in a sealing mode so as to close the flow passage, and when the temperature is lower than the set temperature, the spring pushes the second valve core to move away from the first closing face so as to open the flow passage.

2. The hydrophobic apparatus of claim 1, wherein the valve body has first and second ends opposite in a first direction, the inlet is arranged on the first end, the outlet is arranged on the second end, a first chamber, a second chamber and a third chamber which are sequentially arranged from the first end to the second end and have gradually reduced diameters are arranged in the valve body, the first valve core is arranged in the first chamber, the second valve core is movably arranged in the second chamber along a first direction, the memory spring is positioned in the third chamber and extends along the first direction with the spring, the flow passage comprises a first flow passage, a second flow passage and a third flow passage, wherein the first flow passage is communicated from the inlet to the outlet in sequence and is positioned between the first valve core and the inner wall of the first chamber, the second flow passage penetrates through the second valve core, and the third flow passage is positioned in the third chamber.

3. The trap according to claim 2, wherein the first valve core comprises a first core body and a first rod body connected in a first direction, the first core body is connected to the valve body, the first closed surface is formed on an end surface of the first core body facing one end of the first rod body, a concave groove is formed on an outer side wall of the first core body, and the first flow passage is formed between the concave groove and an inner wall of the first chamber;

the first rod body is provided with a first limiting block, one end of the spring is sleeved on the first rod body and is abutted against the first limiting block, and the other end of the spring is abutted against the second valve core.

4. The hydrophobic device as claimed in claim 3, wherein an outer side wall of the first core is provided with an external thread, and an inner wall of the first chamber is provided with an internal thread which is matched with the external thread.

5. The hydrophobic device of claim 3 or 4, wherein the number of grooves is plural and arranged at intervals in a circumferential direction of the first core.

6. The drain device according to claim 3 or 4, wherein the second valve core comprises a second core body and a second rod body, the second core body is provided with an installation cavity extending along a first direction, one end of the first rod body, which is far away from the first core body, is inserted into the installation cavity, the first limiting block is positioned in the installation cavity, the spring is arranged in the installation cavity, and two ends of the spring respectively abut against the first limiting block and the inner wall of the installation cavity;

the second rod body is fixedly connected to one side of the second core body, which is far away from the first valve core, one end of the memory spring is sleeved on the second rod body and abuts against the second core body, and the other end of the memory spring abuts against the inner wall of the third cavity.

7. The hydrophobic device of claim 6, wherein the second flow passage is plural in number and arranged at intervals in a circumferential direction of the second core.

8. A pipeline system, comprising a medium pipeline and one or more drain pipelines which are communicated with the medium pipeline and are arranged at intervals, wherein the drain pipeline comprises a first control valve, a first connecting pipe, a second connecting pipe and the drain device according to any one of claims 1 to 7, one end of the first control valve is used for being connected with the medium pipeline through the first connecting pipe, and the other end of the first control valve is connected with an inlet of a valve body of the drain device through the second connecting pipe.

9. The piping system of claim 8, wherein the drain line further comprises a drain pipe, a drain tank, and a medium recovery vessel, wherein one end of the drain pipe is connected to the outlet of the valve body of the drain device, the other end of the drain pipe is located above the opening of the drain tank, and the opening of the medium recovery vessel is upward and below the drain opening of the drain tank.

10. The conduit system of claim 9, wherein the drain line further comprises a second control valve, the second control valve and the drain device being connected in parallel between the second connecting tube and the drain tube.

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