CN115381294A

CN115381294A - Pipeline machine

Info

Publication number: CN115381294A
Application number: CN202211109437.XA
Authority: CN
Inventors: 任富佳; 赖秀保; 刘建保; 陈天; 郁明跃
Original assignee: Hangzhou Robam Appliances Co Ltd
Current assignee: Hangzhou Robam Appliances Co Ltd
Priority date: 2022-09-13
Filing date: 2022-09-13
Publication date: 2022-11-25

Abstract

The invention relates to the technical field of household appliances and discloses a pipeline machine. The pipeline machine water tank, first check valve and second check valve. The water tank is communicated with a water inlet pipe and a water outlet pipe, the first one-way valve is arranged at the upper part of the water tank and is configured to only allow air in the water tank to flow out in one way, and the second one-way valve is arranged at the upper part of the water tank and is configured to only allow outside air to flow into the water tank in one way. When water is filled into the water tank, the air pressure in the water tank is increased to open the first check valve, and external atmosphere enters the water tank; when water in the water tank is pumped out, the air pressure in the water tank is reduced to open the second check valve, and external atmosphere enters the water tank. The first check valve and the second check valve guarantee that water injection and water pumping are smooth. When not taking water injection/out to the water tank, first check valve and second check valve keep closed state to can avoid impurity, bacterium etc. in the outside air to continuously enter into the water tank, avoid the water in the water tank to be polluted.

Description

Pipeline machine

Technical Field

The invention relates to the technical field of household appliances, in particular to a pipeline machine.

Background

The pipeline machine is a water dispenser widely used in places such as families, offices, schools and the like, and is usually matched with water purifying equipment for use. Because the flow of the water purifying equipment is inconsistent with the water outlet flow of the pipeline machine, the pipeline machine is generally designed with a water tank. In order to ensure that the pressure in the tank is balanced when filling water into the tank and pumping out water from the tank, it is common in the art to provide an air vent in the top of the tank that communicates with the outside atmosphere. However, in the case of long-term use, impurities and bacteria in the outside air continuously enter the water tank through the air holes and are deposited in the water tank, thereby causing the water in the water tank to be contaminated.

Therefore, a pipeline machine is needed to solve the above technical problems.

Disclosure of Invention

The invention aims to provide a pipeline machine which can ensure that air pressure in a water tank is balanced when the water tank is filled with water or pumps water and ensure that the water tank has good sealing property when the water tank is not filled with water or pumps water.

In order to achieve the purpose, the invention adopts the following technical scheme:

a pipeline machine, comprising:

the water tank is communicated with a water inlet pipe and a water outlet pipe;

a first check valve provided at an upper portion of the water tank, the first check valve being configured to allow only a one-way outflow of gas inside the water tank;

a second check valve provided at an upper portion of the water tank, the second check valve being configured to allow only one-way inflow of external air into the water tank.

As an alternative, the line machine further comprises a first pump assembly disposed on the water inlet pipe, the first pump assembly being configured to pump water into the water tank.

As an alternative, the pumping pressure of the first pump assembly is P, the opening pressure of the first check valve is P, and P > P.

As an alternative, the maximum water pressure at the first one-way valve is P, where P > P-P, where P is atmospheric pressure;

p = ρ × g × H, where ρ is the density of water in the water tank; g is gravity acceleration; h is the maximum distance of the first one-way valve from the side wall of the tank in the horizontal plane.

As an alternative, the pipeline machine further comprises a second pump assembly disposed on the outlet pipe, the second pump assembly being configured to pump out the water in the water tank.

As an alternative, the pumping pressure of the second pump assembly is P, the opening pressure of the second one-way valve is P, and P > P.

As an alternative, the water tank is configured with:

the first mounting part is provided with an air outlet hole, and the first one-way valve is connected with the air outlet hole in a sealing manner;

and the second mounting part is provided with an air inlet hole, and the second one-way valve is connected to the air inlet hole in a sealing manner.

As an optional scheme, the air outlet is a stepped hole, and the first check valve is hermetically connected in the large-diameter end of the air outlet and abuts against a step in the air outlet; and/or

The air inlet hole is a stepped hole, and the second one-way valve is connected to the large-diameter end of the air inlet hole in a sealing mode and is abutted to the step in the air inlet hole.

As an alternative, the first one-way valve and the second one-way valve are identical in structure and are installed on the water tank in opposite directions.

As an alternative, the first check valve comprises:

the valve body is configured to be in sealing connection with the hole wall of the air outlet hole, and a through hole capable of communicating the inside of the water tank with the outside atmosphere is formed in the valve body;

and the piston is movably connected with the valve body and can seal or open the through hole.

As an optional scheme, the first check valve further comprises an elastic member, two ends of the elastic member are respectively connected with the valve body and the piston, and the elastic member can enable the piston to move to close or open the through hole.

As an optional scheme, a guide hole is formed in the valve body, and one end, far away from the through hole, of the piston is in sliding fit with the guide hole.

As an alternative, the valve body comprises:

a sealing part, the outer peripheral surface of which is configured to be in sealing connection with the hole wall of the air outlet, and the through hole is arranged on the sealing part;

the supporting part comprises a supporting body and a plurality of supporting arms, the supporting body is arranged at intervals with the sealing parts, the two ends of each supporting arm are respectively connected with the supporting body and the sealing parts, the guide holes are formed in the supporting body, and the pistons are arranged between the supporting body and the sealing parts.

As an optional scheme, the piston includes a blocking portion and a rod portion, the blocking portion is configured to block the through hole, the rod portion is in sliding fit with the guide hole, and the elastic member is sleeved on the rod portion and elastically pressed between the support body and the blocking portion.

As an optional solution, the first check valve further includes a sealing member, and the sealing member is connected to the piston and can be pressed between the piston and the through hole.

As an optional scheme, a tapered portion is arranged at one end of the through hole close to the piston, the cross section of the tapered portion is gradually reduced along the direction away from the piston, and the piston is pressed against the inner wall of the tapered portion.

As an optional scheme, the pipeline machine further includes two first seal rings, one of the first seal rings is clamped between the first check valve and the hole wall of the air outlet hole, and the other first seal ring is clamped between the second check valve and the hole wall of the air inlet hole.

As an optional solution, the water tank includes a tank body and a tank cover, the top of the tank body has an opening, the tank cover is disposed at the opening, and the first check valve and/or the second check valve are/is disposed on the tank cover.

As an optional solution, the pipeline machine further includes a second sealing ring, and the second sealing ring is disposed between the box body and the box cover.

The invention has the beneficial effects that:

according to the pipeline machine, when water is injected into the water tank through the water inlet pipe, the air pressure in the water tank is increased, the first check valve is opened at the moment, and the water tank is communicated with the external atmosphere, so that the pressure in the water tank is kept stable, and the water injection is smooth; when taking the water in the water tank out through the outlet pipe, the air pressure in the water tank reduces, and the second check valve opens this moment, and outside atmosphere enters into the water tank to guarantee that the water tank internal pressure is stable, and then guarantee to draw water smoothly. When not taking water in to water tank water injection or with the water tank out, first check valve and second check valve keep the closed condition to can avoid impurity, bacterium etc. in the outside air to continuously enter into the water tank, avoid the water in the water tank to be polluted.

The pump water pressure of the first pump assembly is set to be larger than the opening pressure of the first one-way valve, so that the first one-way valve can be instantly opened, and the process of pumping water into the water tank is smooth. In addition, the opening pressure of the first check valve is set to be larger than the difference between the maximum water pressure possibly received by the first check valve and the atmosphere, the problem that water leakage cannot occur to the first check valve when the water tank inclines or completely topples in any direction is guaranteed, and the using safety of the pipeline machine is improved.

The pump water pressure of the second pump water assembly is set to be larger than the opening pressure of the second pump water assembly in a one-way mode, the second one-way valve can be opened immediately after the second pump assembly starts to pump out the water in the water tank, the pressure in the water tank is guaranteed to be kept in a constant state, and then the smoothness of the water in the water tank is guaranteed to be smooth when the water in the water tank is pumped out.

Drawings

FIG. 1 is a schematic diagram of a pipeline machine according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view at a water tank provided by an embodiment of the present invention;

FIG. 3 is a schematic diagram of a force applied to the first check valve after the tank has been emptied according to an embodiment of the present invention;

FIG. 4 is a first top view of a first one-way valve in relation to the side wall of the tank according to an embodiment of the present invention;

FIG. 5 is a diagram illustrating a second top view of the relative position of the first check valve with respect to the sidewall of the tank in accordance with an embodiment of the present invention;

FIG. 6 is an enlarged view taken at A in FIG. 2;

fig. 7 is a schematic structural diagram of a first check valve according to an embodiment of the present invention.

In the figure:

1. a water tank; 11. a box body; 12. a box cover; 121. a first mounting portion; 122. a second mounting portion; 123. an air inlet; 124. an air outlet;

2. a first check valve; 21. a valve body; 211. a through hole; 212. a sealing part; 213. a support portion; 2131. a support body; 2132. a support arm; 214. a guide hole; 215. mounting grooves; 22. a piston; 221. a plugging section; 222. a rod portion; 23. an elastic member; 24. a seal member; 25. a first seal ring;

31. a water inlet pipe; 32. a water outlet pipe;

41. a first pump assembly; 42. a second pump assembly;

5. a second seal ring;

6. a second one-way valve;

7. a water making component;

8. and (5) a water outlet end.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings, not all of them.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

In the present invention, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation that the first and second features are not in direct contact, but are in contact via another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used based on the orientations or positional relationships shown in the drawings for convenience of description and simplicity of operation, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

As shown in fig. 1, the present embodiment provides a pipeline machine, which includes a water tank 1, a first pump assembly 41, a second pump assembly 42, a water preparation assembly 7 and a water outlet end 8. Wherein, the water tank 1 is formed with a space for containing water, the water tank 1 is connected with a water inlet pipe 31 and a water outlet pipe 32, and the first pump assembly 41 is provided on the water inlet pipe 31 and is used for pumping the upstream water into the water tank 1. The second pump assembly 42 is disposed on the outlet pipe 32, the water production assembly 7 is located downstream of the second pump assembly 42, and the water outlet end 8 of the pipeline machine is located downstream of the water production assembly 7. The second pump assembly 42 is used for pumping and delivering the water in the water tank 1 to the water producing assembly 7, and the water producing assembly 7 discharges the water from the water outlet end 8 after cooling or heating the water. Specifically, in this embodiment, as shown in fig. 1, the water inlet pipe 31 is connected to the upper end of the water tank 1, and the water outlet pipe 32 is disposed at the bottom of the water tank 1, so as to ensure that the water in the water tank 1 can flow out smoothly. Specifically, the upstream of the water inlet pipe 31 may be a water purifier. The first pump assembly 41 and the second pump assembly 42 for pumping water into/out of the water tank 1 are well known in the art, and the detailed structure and operation thereof will not be described herein.

Preferably, as shown in fig. 2 and 3, the pipeline machine further comprises a first check valve 2 and a second check valve 6. Wherein, first check valve 2 sets up the upper portion at water tank 1, and first check valve 2 normally is closed state, and when the pressure in the water tank 1 was greater than external atmospheric pressure and the pressure differential reached the cracking pressure of first check valve 2, first check valve 2 opened to make the gas in the water tank 1 discharge to the outside. The second check valve 6 is also arranged at the upper part of the water tank 1, the second check valve 6 is normally a closing device, when the pressure in the water tank 1 is smaller than the external atmospheric pressure and the pressure difference is larger than the opening pressure of the second check valve 6, the second check valve 6 is opened, and at the moment, the external air enters the water tank 1.

When the pipeline machine is used, when the first pump assembly 41 injects water into the water tank 1, the air pressure in the water tank 1 is increased, at the moment, the first check valve 2 is opened, and the water tank 1 is communicated with the external atmosphere, so that the pressure in the water tank 1 is kept stable, and the smooth water injection is further ensured; when the water in the water tank 1 is pumped out by the second pump assembly 42, the air pressure in the water tank 1 is reduced, the second one-way valve 6 is opened at the moment, and the outside atmosphere enters the water tank 1, so that the pressure in the water tank 1 is stable, and the water pumping is ensured to be smooth. When not filling water into the water tank 1 or pumping out the water in the water tank 1, the first check valve 2 and the second check valve 6 are kept in a closed state, so that impurities, bacteria and the like in the outside air can be prevented from continuously entering the water tank 1, and the water in the water tank 1 is prevented from being polluted.

In this embodiment, as shown in fig. 2, the water tank 1 includes a tank body 11 and a tank cover 12, wherein the tank body 11 has an opening at the top thereof, and the tank cover 12 covers the opening, so that the water tank 1 is closed. First check valve 2 and second check valve 6 all set up on case lid 12, and then guarantee the water tank 1 and admit air and carminative smooth and easy nature. In this embodiment, as shown in fig. 2, the pipeline machine further includes a second sealing ring 5, wherein the second sealing ring 5 is disposed between the tank body 11 and the tank cover 12, so as to prevent the water tank 1 from leaking water. Specifically, the second sealing ring 5 may be a rubber ring, and in other embodiments, the specific material of the second sealing ring 5 is not limited.

Preferably, the pump water pressure of the first pump assembly 41 is P1, the opening pressure of the first check valve 2 is P2, and P1 > P2. Therefore, after the first pump assembly 41 starts to pump water into the water tank 1, the first check valve 2 can be immediately opened, so that the pressure in the water tank 1 is kept in a relatively constant state, and the smoothness of water injection into the water tank 1 is further ensured. The specific value of P1 can be obtained from the parameters of the first pump assembly 41, so that the opening pressure of the first check valve 2 can be correspondingly set accordingly.

In some cases, the water tank 1 may have a problem of dumping, and when the water tank 1 dumps, the water in the water tank 1 may not pass through the first check valve 2, and at this time, the water may generate water pressure on the first check valve 2, which may further cause the first check valve 2 to open, so that the water tank 1 may have a problem of water leakage when dumping.

In this embodiment, the opening pressure of the first check valve is P2, and P2 > P5-P0. Where P0 is the atmospheric pressure and P5 is the maximum pressure that may be applied to the first one-way valve 2 when the water tank 1 is in any state (including no tipping, tilting, full tipping of the water tank 1). The specific analysis is as follows:

when water tank 1 emptys completely, the stress state of first check valve 2 department is as shown in fig. 3, in order to avoid water pressure to open first check valve 2, then need to guarantee that P5 < P0+ P2, then the cracking pressure of first check valve 2 needs to guarantee:

p2 > P5-P0 formula (1)

That is to say, the opening pressure of the first check valve 2 is greater than the difference between the maximum water pressure that can be received at the first check valve 2 and the atmospheric pressure, so that it can be ensured that the first check valve 2 cannot be opened only under the action of the water pressure when the water tank 1 is toppled, and further the problem of water leakage cannot occur. Specifically, the calculation method of the maximum water pressure that can be received by the first check valve 2 is P5:

p5= ρ × g × H formula (2)

Wherein rho is the density of water in the water tank 1; g is the acceleration of gravity; h is the maximum distance of the first non return valve 2 from the side wall of the tank 1 in the horizontal plane. The horizontal plane here means a horizontal plane in which the water tank 1 is not in a tilted state. The following explanations are given with respect to the meaning of the maximum distance:

taking the example that the side wall of the water tank 1 (i.e., the side wall of the tank body 11) is circular, as shown in fig. 4, if the first check valve 2 is eccentric with respect to the side wall of the circular water tank 1, then the first check valve 2 has different distances from different positions of the side wall of the water tank 1 in the horizontal plane, such as H11, H12, H13, H14 \8230, H1n, etc. (only H11, H12, H13, H14 are shown in fig. 4), H = (H11, H12, H13, H14 \8230; H1 n) max. If the first check valve 2 is located at the center of the circle of the circular water tank 1, the distances from the first check valve 2 to different positions of the side wall of the water tank 1 in the horizontal plane are equal, and the first check valve 2 is the radius of the circular water tank, and the value of H is the radius of the circular water tank.

Taking the case where the shape surrounded by the side walls of the tank 1 (that is, the side walls of the tank body 11) is a rectangle, as shown in fig. 5, if the distances from the first check valve 2 to the four side walls of the tank 1 in the horizontal plane are H21, H22, H23, and H24, respectively, then H = (H21, H22, H23, H24) max.

When the water tank 1 is completely dumped in any direction, the original horizontal plane becomes a vertical plane, and H represents the maximum possible water depth at the first check valve 2. Therefore, the maximum possible water pressure at the first check valve 2 can be obtained through the formula (2), and the opening pressure of the first check valve 2 can be calculated through the formula (1), so that the first check valve 2 cannot be opened when the water tank 1 is inclined or completely topples over, water in the water tank 1 cannot leak from the first check valve 2, and the safety of the whole pipeline machine is improved. In summary, the setting range of the opening pressure P1 of the first check valve 2 is: P5-P0 is more than P1 and more than P2. For improved safety, P5 < P1 < P2 may be provided.

Further, the pump water pressure of the second pump assembly 42 is P3, the opening pressure of the second check valve 6 is P4, and P3 > P4. Therefore, after the second pump assembly 42 starts pumping out the water from the water tank 1, the second check valve 6 can be opened immediately, so that the pressure in the water tank 1 is kept in a relatively constant state, and the smoothness of pumping out the water from the water tank 1 can be ensured. The specific value P4 can be obtained from the parameters of the second pump assembly 42, so that the pump water pressure P3 of the second pump assembly 42 can be correspondingly set accordingly.

In this embodiment, the first check valve 2 and the second check valve 6 have the same structure, but the two check valves are installed on the box cover 12 in opposite directions, so that the first check valve 2 can only allow gas to be discharged from the water tank 1 in one direction, and the second check valve 6 only allows other gas to enter the water tank 1 in one direction.

Preferably, as shown in fig. 2 and 6, the case cover 12 is configured with a first mounting portion 121 and a second mounting portion 122, the air outlet hole 124 is opened on the first mounting portion 121, and the air inlet hole 123 is opened on the second mounting portion 122. The first mounting portion 121 and the second mounting portion 122 are both protruding structures protruding from the case cover 12 to the inside of the case body 11, so that the air outlet hole 124 and the air inlet hole 123 have a certain depth, and the reliability of mounting the first check valve 2 and the second check valve 6 is further ensured. Specifically, the air outlet 124 is a stepped hole, and the large diameter end of the stepped hole is located above the small diameter end. The first check valve 2 is hermetically connected to the large-diameter end of the air outlet 124 and abuts against a step in the air outlet 124. The inner wall of the large-diameter end of the air outlet 124 realizes circumferential positioning of the first one-way valve 2, the step in the air outlet 124 realizes axial positioning of the first one-way valve 2, and then the installation of the whole first one-way valve 2 is realized. Similarly, the air inlet hole 123 is a stepped hole, the large diameter end of the air inlet hole 123 is located above the small diameter end, and the second check valve 6 is hermetically connected to the large diameter end of the air inlet hole 123 and abuts against the step in the air inlet hole 123. That is, the inner wall of the large-diameter end of the air inlet hole 123 realizes circumferential positioning of the second check valve 6, and the step in the air inlet hole 123 realizes positioning of the second check valve 6 in the axial direction, so that the installation of the whole second check valve 6 is realized, and the whole structure is simple and the installation is convenient.

Since the first check valve 2 and the second check valve 6 in this embodiment have the same structure, the following only takes the first check valve 2 as an example to describe the detailed structure and the operation principle in detail:

as shown in fig. 6 and 7, the first check valve 2 includes a valve body 21, a piston 22, and an elastic member 23. The valve body 21 is connected with the wall of the air outlet 124 in a sealing manner, the valve body 21 is provided with a through hole 211 which can communicate the inside of the water tank 1 with the outside atmosphere, the piston 22 is movably connected with the valve body 21, two ends of the elastic part 23 are respectively connected with the valve body 21 and the piston 22, and the elastic part 23 can enable the piston 22 to move so as to seal or open the through hole 211. Specifically, the elastic member 23 elastically presses the piston 22 so that the piston 22 blocks the through hole 211, and when the air pressure applied to the piston 22 overcomes the elastic force of the elastic member 23, the piston 22 moves and opens the through hole 211. In a normal state, the valve body 21 is hermetically connected with the air outlet 124, and the piston 22 blocks the through hole 211 of the valve body 21, so that good sealing performance of the water tank 1 is ensured, impurities or bacteria in external atmosphere are prevented from continuously entering the water tank 1, and water source pollution is avoided. When the pressure in the water tank 1 increases due to water injection, and the pressure difference between the inside and the outside of the water tank 1 generates an acting force on the piston 22 to overcome the elastic force of the elastic member 23, the piston 22 moves to open the through hole 211, so that the inside of the water tank 1 is communicated with the outside atmosphere, and the pressure in the water tank 1 is further ensured to be stable. The first check valve 2 is opened and closed only by means of the driving of the piston 22 by the elastic piece 23, and the structure is simple and the cost is low.

Specifically, in the present embodiment, the elastic member 23 is a spring. Further, the cross section of the major diameter end of the air outlet 124 is circular, and correspondingly, the circumferential surface of the valve body 21 is also circular, so that the valve body 21 can be matched with the hole wall of the air outlet 124, when the first one-way valve 2 is installed, the valve body 21 is pressed into the air outlet 124, and the convenience in installing the first one-way valve 2 is improved.

Preferably, as shown in fig. 6, the valve body 21 is provided with a guide hole 214, and one end of the piston 22 far away from the through hole 211 is slidably engaged with the guide hole 214. The guide hole 214 can guide the movement direction of the piston 22, thereby ensuring good sealing of the piston 22 against the through hole 211 and improving the sealing performance of the first check valve 2.

Specifically, as shown in fig. 6 and 7, the valve body 21 includes a sealing portion 212 and a support portion 213, wherein an outer peripheral surface of the sealing portion 212 is sealingly connected with a hole wall of the air outlet hole 124. The through hole 211 is provided in the sealing portion 212. The supporting portion 213 includes a supporting body 2131 and a plurality of supporting arms 2132, the supporting body 2131 and the sealing portion 212 are disposed at an interval, two ends of the supporting arms 2132 are respectively connected to the supporting body 2131 and the sealing portion 212, and the guiding holes 214 are disposed on the supporting body 2131. The support arms 2132 are arranged such that a certain accommodation space is formed between the support body 2131 and the sealing portion 212, and an air-permeable space is formed between the adjacent support arms 2132, which space ensures that the through holes 211 can communicate the inside and the outside of the water tank 1. Further, the piston 22 is disposed in the accommodating space between the support body 2131 and the sealing portion 212, the piston 22 includes a blocking portion 221 and a rod portion 222, the blocking portion 221 is used for blocking the through hole 211, the rod portion 222 is slidably engaged with the guide hole 214, and when the piston 22 reciprocates along the guide hole 214, blocking of the through hole 211 or opening of the through hole 211 can be achieved. Further, the elastic element 23 is sleeved on the rod portion 222 and elastically pressed between the support body 2131 and the blocking portion 221, and the rod portion 222 can provide a guiding effect for the elastic deformation of the elastic element 23, so as to ensure the accuracy of the deformation direction of the elastic element 23.

In a normal state, as shown in fig. 6, the elastic member 23 is in a compressed state, and downward pressure is generated on the blocking portion 221 of the piston 22, so that the blocking portion 221 presses against and blocks the through hole 211, and at this time, the first check valve 2 is in a closed state, so as to prevent impurities and bacteria in the outside air from entering the water tank 1. When beginning the water injection in the water tank 1, the pressure in the water tank 1 is greater than outside atmospheric pressure, and the effort that inside and outside pressure difference produced produces upwards driving force to piston 22, after this driving force overcomes the pressure of elastic component 23, the pole portion 222 of piston 22 upwards moves along guiding hole 214, thereby make shutoff portion 221 no longer shutoff perforating hole 211, at this moment, the inside air of water tank 1 passes through the little diameter end of venthole 124 in proper order, perforating hole 211, the interval between support arm 2132 then discharges the outside of water tank 1, with the pressure stability in guaranteeing water tank 1, and then guarantee the smooth and easy of water injection. When the water tank 1 is not filled with water, the pressure in the water tank 1 is basically consistent with the external atmospheric pressure, and at the moment, the piston 22 is reset under the action of the elastic piece 23, so that the piston 22 continues to block the through hole 211, and the good sealing performance of the water tank 1 is ensured.

Specifically, as shown in fig. 7, the support portion 213 includes four support arms 2132, and the four support arms 2132 are evenly distributed along the circumferential direction of the seal portion 212. In other embodiments, the specific number of support arms 2132 is not limited herein. Further, the whole valve body 21 is made of plastic and is integrally injection-molded, and the injection molding mode is convenient for forming a relatively complex shape of the valve body 21.

Preferably, as shown in fig. 6, the first check valve 2 further includes a sealing member 24, and the sealing member 24 is connected to the piston 22 and can be pressed between the piston 22 and the through hole 211. Therefore, the sealing property when the piston 22 closes the through hole 211 can be greatly improved, and foreign substances and bacteria can be prevented from entering the water tank 1 from this position. Specifically, the seal member 24 is annular and fitted around the circumferential surface of the stopper portion 221 of the piston 22. Further, be provided with the ring channel on the global of shutoff portion 221, sealing member 24 joint is in the ring channel to guarantee the stability in sealing member 24 position, and then guarantee that first check valve 2 still can keep good leakproofness after opening and close perforating hole 211 many times.

Further, as shown in fig. 6, one end of the through hole 211 close to the piston 22 is provided with a tapered portion, the cross section of the tapered portion gradually decreases in a direction away from the piston 22, and the piston 22 is pressed against the inner wall of the tapered portion. By providing the cross section of the through hole 211 at the end closer to the piston 22 with a tapered shape, the piston 22 can be brought into contact with the hole wall of the through hole 211 more favorably by the elastic member 23, and the sealing performance of the first check valve 2 in the closed state can be further improved.

Preferably, as shown in fig. 6, the pipeline machine further includes two first sealing rings 25, one of the first sealing rings 25 is interposed between the first check valve 2 and the hole wall of the air outlet 124, specifically, an installation groove 215 is annularly provided on the outer circumferential surface of the sealing portion 212 of the valve body 21, a first sealing ring 25 is provided in the installation groove 215, and the first sealing ring 25 is compressed between the valve body 21 and the hole wall of the air outlet 124. The sealing performance between the first one-way valve 2 and the water tank 1 is further improved, and the cleanness of the water quality in the water tank 1 is further guaranteed. Similarly, the other first seal ring 25 is interposed between the second check valve 6 and the hole wall of the intake hole 123. Therefore, the sealing performance between the second one-way valve 6 and the water tank 1 is further improved, and the cleanness of the water quality in the water tank 1 is further guaranteed.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the invention and are not intended to limit the embodiments of the present invention, and that the technical spirit of the present invention may be changed by those skilled in the art in the aspects of the specific embodiments and the application scope, and the content of the present specification should not be construed as limiting the invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A pipeline machine, comprising:

the water tank (1), the said water tank (1) connects with inlet pipe (31) and discharging tube (32);

a first check valve (2) provided at an upper portion of the water tank (1), the first check valve (2) being configured to allow only a one-way outflow of gas inside the water tank (1);

a second check valve (6) provided at an upper portion of the water tank (1), the second check valve (6) being configured to allow only one-way inflow of outside air into the water tank (1).

2. The line machine according to claim 1, characterized in that it further comprises a first pump assembly (41), said first pump assembly (41) being arranged on said inlet pipe (31), said first pump assembly (41) being configured to pump water into said water tank (1).

3. The line machine according to claim 2, characterized in that the pump water pressure of the first pump assembly (41) is P1, the opening pressure of the first non return valve (2) is P2, P1 > P2.

4. A pipeline machine according to claim 3, characterized in that the maximum water pressure at the first non return valve (2) is P5, P2 > P5-P0, where P0 is atmospheric pressure;

p5= ρ × g × H, where ρ is the density of water in the water tank (1); g is the acceleration of gravity; h is the maximum distance of the first one-way valve (2) from the side wall of the water tank (1) in the horizontal plane.

5. The line machine according to claim 1, characterized in that it further comprises a second pump assembly (42), said second pump assembly (42) being arranged on said outlet pipe (32), said second pump assembly (42) being configured to pump out water inside said water tank (1).

6. A pipeline machine as claimed in claim 5, characterised in that the pumping pressure of said second pump assembly (42) is P3 and the opening pressure of said second non-return valve (6) is P4, P3 > P4.

7. Pipeline machine according to any of claims 1-6, characterized in that the water tank (1) is configured with:

the first mounting part (121) is provided with an air outlet (124), and the first one-way valve (2) is connected with the air outlet (124) in a sealing mode;

and the second mounting part (122) is provided with an air inlet hole (123), and the second one-way valve (6) is connected to the air inlet hole (123) in a sealing manner.

8. The pipeline machine as claimed in claim 7, wherein said outlet hole (124) is a stepped hole, and said first check valve (2) is sealingly connected in the large diameter end of said outlet hole (124) and abuts a step in said outlet hole (124); and/or

The air inlet hole (123) is a stepped hole, and the second one-way valve (6) is connected to the large-diameter end of the air inlet hole (123) in a sealing mode and is abutted to a step in the air inlet hole (123).

9. Pipeline machine according to claim 7, characterized in that said first non-return valve (2) and said second non-return valve (6) are structurally identical and mounted on said tank (1) in opposite directions.

10. A pipeline machine according to claim 9, characterised in that the first non return valve (2) comprises:

the valve body (21) is configured to be in sealing connection with the wall of the air outlet (124), and a through hole (211) capable of communicating the inside of the water tank (1) with the outside atmosphere is formed in the valve body (21);

and the piston (22) is movably connected with the valve body (21) and can seal or open the through hole (211).

11. The line machine according to claim 10, characterized in that the first non return valve (2) further comprises an elastic member (23), both ends of the elastic member (23) being connected to the valve body (21) and the piston (22), respectively, the elastic member (23) being capable of moving the piston (22) to close or open the through hole (211).

12. A pipeline machine according to claim 11, characterised in that the valve body (21) is provided with a guide bore (214), and that the end of the piston (22) remote from the through-bore (211) is in sliding engagement with the guide bore (214).

13. The line machine according to claim 12, characterized in that the valve body (21) comprises:

a sealing part (212), the outer peripheral surface of which is configured to be in sealing connection with the hole wall of the air outlet hole (124), wherein the through hole (211) is arranged on the sealing part (212);

the supporting part (213) comprises a supporting body (2131) and a plurality of supporting arms (2132), the supporting body (2131) and the sealing part (212) are arranged at intervals, two ends of each supporting arm (2132) are respectively connected with the supporting body (2131) and the sealing part (212), the guide hole (214) is arranged on the supporting body (2131), and the piston (22) is arranged between the supporting body (2131) and the sealing part (212).

14. A pipeline machine according to claim 13, wherein the piston (22) comprises a blocking part (221) and a rod part (222), the blocking part (221) is configured to block the through hole (211), the rod part (222) is in sliding fit with the guide hole (214), and the elastic member (23) is sleeved on the rod part (222) and elastically pressed between the support body (2131) and the blocking part (221).

15. Pipeline machine according to any of claims 10-14, characterized in that the first non return valve (2) further comprises a sealing (24), the sealing (24) being connected to the piston (22) and being able to be pressed between the piston (22) and the through hole (211).

16. A pipeline machine according to any of claims 10-14, characterized in that the end of the through hole (211) close to the piston (22) is provided with a conical portion, the cross section of which is gradually reduced in the direction away from the piston (22), the piston (22) being pressed against the inner wall of the conical portion.

17. Pipeline machine according to any of claims 10 to 14, characterized in that it further comprises two first sealing rings (25), one of said first sealing rings (25) being interposed between said first one-way valve (2) and the wall of said outlet hole (124), the other one of said first sealing rings (25) being interposed between said second one-way valve (6) and the wall of said inlet hole (123).

18. Pipeline machine according to any of claims 1-6, characterized in that the water tank (1) comprises a tank body (11) and a tank cover (12), the top of the tank body (11) has an opening, the tank cover (12) is arranged at the opening, and the first one-way valve (2) and/or the second one-way valve (6) is/are arranged on the tank cover (12).

19. Pipeline machine according to claim 18, characterised in that it further comprises a second sealing ring (5), said second sealing ring (5) being arranged between the box (11) and the box cover (12).