CN220185843U

CN220185843U - Water drain valve

Info

Publication number: CN220185843U
Application number: CN202321570613.XU
Authority: CN
Inventors: 冷雨; 周连超; 尹召阳
Original assignee: Weichai Power Co Ltd
Current assignee: Weichai Power Co Ltd
Priority date: 2023-06-19
Filing date: 2023-06-19
Publication date: 2023-12-15
Anticipated expiration: 2033-06-19

Abstract

The utility model provides a water drain valve, which comprises a valve body and a piston assembly; the two ends of the valve body are respectively a water inlet end and a water outlet end, the valve body is provided with a water discharging channel, a piston channel and a common channel, and the distance between the water discharging channel and the piston channel is gradually reduced along the direction from the water outlet end to the water inlet end until the water discharging channel and the piston channel are communicated with the common channel; the piston assembly is movably connected with the piston channel, the water drain valve has an opening state and a closing state, and in the opening state, the piston assembly is far away from the common channel; in the closed state, the piston assembly seals off the common channel. The water drain valve provided by the utility model has the advantages that the connection between the water drain valve and mounting equipment such as a fuel oil strainer is not affected in the opening and closing process, and the looseness of the connection part is avoided, so that water leakage is avoided.

Description

Water drain valve

Technical Field

The utility model relates to the technical field of valves, in particular to a water drain valve.

Background

A drain valve is a valve for draining liquid or gas in a pipe, container, device, etc. The drain valve is often applied to the automobile fuel system, and impurity and moisture can be concentrated in the filter screen when the fuel strainer filters the fuel, and the drain valve is used for discharging these impurity and moisture to prevent impurity and moisture from mixing in the fuel, guarantee engine normal operating.

In the related art, a water drain valve of the fuel strainer is arranged at the bottom of the filter screen and needs to be opened and closed by rotating or screwing. The fuel strainer is connected with the water drain valve through threads, specifically, a water inlet end of the water drain valve can be provided with a threaded interface, a matched threaded interface is arranged on the fuel strainer shell, and the two threaded interfaces are screwed up through rotation.

However, the above drain valve is easy to loosen at the screwed portion after being opened and closed a plurality of times, resulting in water leakage.

Disclosure of Invention

The utility model provides a water drain valve, which is used for solving the problem that after the water drain valve is opened and closed for a plurality of times, the screw joint of the water drain valve is easy to loosen, so that water leakage is caused.

The utility model provides a water drain valve, which comprises a valve body and a piston assembly;

the two ends of the valve body are respectively a water inlet end and a water outlet end, the valve body is provided with a water discharging channel, a piston channel and a common channel, and the distance between the water discharging channel and the piston channel is gradually reduced along the direction from the water outlet end to the water inlet end until the water discharging channel and the piston channel are communicated with the common channel;

the piston assembly is movably connected with the piston channel, the water drain valve has an opening state and a closing state, and in the opening state, the piston assembly is far away from the common channel; in the closed state, the piston assembly seals off the common channel.

According to the water drain valve, the piston assembly is arranged, so that the opening and closing of the water drain valve are controlled by the piston assembly, screwing action during opening or closing of the water drain valve each time is avoided, the operation is simple and convenient, connection of the water drain valve and mounting equipment such as a fuel strainer is not affected, looseness of a connecting part is avoided, and water leakage is avoided. Specifically, the water drain valve comprises a valve body and a piston assembly, two ends of the valve body are a water inlet end and a water outlet end respectively, water flows in from the water inlet end and flows out from the water outlet end, the valve body is provided with a water drain channel, a piston channel and a common channel, and the distance between the water drain channel and the piston channel is gradually reduced along the direction from the water outlet end to the water inlet end until the water drain channel and the piston channel are communicated with the common channel; the plug assembly is movably connected with the piston channel, the water drain valve is provided with an opening state and a closing state, in the opening state, the piston assembly is far away from the common channel, the water drain channel is communicated with the common channel, water flows through the common channel and the water drain channel in sequence, and finally flows out of the water drain valve; under the closed state, the piston assembly blocks the common channel, and water cannot flow to the water discharge channel, namely, water cannot flow out of the water discharge valve.

In some possible implementations, the piston assembly includes a plunger and a resilient member;

one end of the plunger, which is close to the water inlet end, is provided with a plug part, the other end of the plunger extends out of the piston channel, one end of the piston channel, which is close to the water outlet end, is provided with an abutting wall, one end of the elastic piece abuts against the plug part, and the other end of the elastic piece abuts against the abutting wall.

In some possible implementations, a chamfer is disposed at an end of the plug portion near the water inlet end, a sealing inclined surface matched with the chamfer is disposed in the common channel, and the chamfer abuts against the sealing inclined surface.

In some possible implementations, the plunger and/or the valve body are plastic pieces.

In some possible implementations, the plug portion is circumferentially surrounded by at least one sealing ring.

In some possible implementations, the piston assembly further includes a handle coupled to the protruding end of the plunger, the handle extending away from the drain channel.

In some possible implementations, the pressing surface of the handle is provided with a recess.

In some possible implementations, a latch assembly is disposed between the valve body and the handle, the latch assembly for locking the valve body and the piston assembly.

In some possible implementations, the latch assembly includes a tab disposed at the water outlet end of the valve body and a latch having one end rotatably connected to the handle and the other end overlapping the tab.

In some possible implementations, the valve body is interference fitted to the outlet port of the mounting apparatus.

The construction of the present utility model and other objects and advantages thereof will be more readily understood from the description of the preferred embodiment taken in conjunction with the accompanying drawings.

Drawings

The above and other objects, features and advantages of embodiments of the present utility model will become more readily apparent from the following detailed description with reference to the accompanying drawings. Embodiments of the utility model will now be described, by way of example and not limitation, in the figures of the accompanying drawings, in which:

FIG. 1 is a schematic view of a drain valve according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of a drain valve provided in an embodiment of the present utility model;

FIG. 3 is a schematic view of a plunger according to an embodiment of the present utility model;

FIG. 4 is an enlarged view of a portion A of FIG. 2;

fig. 5 is a partial enlarged view of the portion B in fig. 1.

Reference numerals:

100-a water drain valve; 110-valve body; 110 a-a water inlet end; 110 b-water outlet end; 111-a water discharge channel; 112-piston channel; 1121-abutting a wall; 113-common channels; 1131-sealing ramp; 120-piston assembly; 121-a plunger; 1211-a plug portion; 1212-chamfering; 1213-a sealing ring; 122-an elastic member; 123-handle; 1231-recesses; 130-a latch assembly; 131-lapping; 132-snap;

200-installing equipment; 210-water outlet interface.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

Common water drain valves are of the types of manual water drain valves, electric water drain valves, pneumatic water drain valves and the like, and can be selected according to actual needs. The manual water drain valve is usually operated by hand shaking and the like, and is suitable for some simple discharging operations, such as the discharging of a household tap water pipeline, the discharging of a fuel oil strainer and the like.

However, the above-described drain valve has some drawbacks:

1) After the water drain valve is opened and closed for a plurality of times, the screw joint of the water drain valve and the fuel oil strainer is easy to loosen, so that water leakage is caused;

2) The screwing action is needed when the valve is opened and closed every time, the operation is complicated, and an operator forgets to screw or screws the valve in place easily, so that the water drain valve leaks water.

The drain valve provided by the embodiment of the utility model will be described in detail below with reference to the accompanying drawings.

Fig. 1 is a schematic view of a drain valve 100 according to an embodiment of the present utility model; fig. 2 is a cross-sectional view of a drain valve 100 according to an embodiment of the present utility model. As shown in fig. 1 and 2, the embodiment of the utility model provides a water drain valve 100, where the water drain valve 100 includes a valve body 110 and a piston assembly 120, a channel is provided in the valve body 110 for discharging water flow, the piston assembly 120 is used for controlling opening and closing of the channel in the valve body 110, so as to avoid screwing action when the water drain valve 100 is opened or closed each time, and the operation is simple and convenient, and the connection between the water drain valve 100 and a mounting device 200 such as a fuel strainer is not affected, so that looseness is avoided at the connection part, and water leakage is avoided.

Specifically, two ends of the valve body 110 are a water inlet end 110a and a water outlet end 110b, water flows in from the water inlet end 110a and flows out from the water outlet end 110b, the valve body 110 is provided with a water discharging channel 111, a piston channel 112 and a common channel 113, and the distance between the water discharging channel 111 and the piston channel 112 is gradually reduced along the direction from the water outlet end 110b to the water inlet end 110a until the water discharging channel 111 and the piston channel 112 are communicated with the common channel 113.

The piston assembly 120 is movably connected to the piston channel 112, the water drain valve 100 has two states of opening and closing, in the opening state, the piston assembly 120 is far away from the common channel 113, the water drain channel 111 is communicated with the common channel 113, water flows through the common channel 113 and the water drain channel 111 in sequence, and finally flows out of the water drain valve 100; in the closed state, the piston assembly 120 blocks the common passage 113, and water cannot flow to the drain passage 111, i.e., water cannot flow out of the drain valve 100.

It will be appreciated that the piston passage 112 and the common passage 113 may be formed as straight passages so that the piston assembly 120 is moved therein, and the drain passage 111 may be formed as a curved passage so that the drain passage 111 communicates with the common passage 113.

In some examples, the valve body 110 of the water drain valve 100 may be screwed to the water outlet port 210 of the installation device 200, the water inlet end 110a of the water drain valve 100 may be provided with external threads, the water outlet port 210 of the installation device 200 may be provided with internal threads matched with the external threads, the two threaded ports are screwed up by rotation, the disassembly and assembly are convenient, and the torque is not transmitted to the screwed connection part in the opening and closing process of the water drain valve 100, so that the looseness of the screwed connection part can be effectively avoided, and water leakage is avoided.

In other examples, the valve body 110 of the water drain valve 100 may also be assembled with the water outlet 210 of the installation device 200 in an interference manner, so as to improve the tightness of the connection between the installation device 200 and the valve body 110 and avoid water leakage at the connection, where the installation device 200 may be a fuel strainer, and the installation device may also be a reservoir or other devices, and the embodiment is not limited.

The fuel strainer is a filter for filtering larger impurities in fuel, and is usually arranged at an oil inlet of a fuel system of an automobile, a motorcycle, a generator and the like to protect the normal operation of the fuel system of the engine. The main function of the fuel strainer is to filter impurities in the fuel, such as sand, rust, water, etc., while the drain valve 100 is used to drain the impurities, prevent the impurities from entering the fuel system, damage the fuel pump, the fuel nozzle, etc., and also prolong the service life of the engine.

As shown in fig. 2, the piston assembly 120 may include a plunger 121 and an elastic member 122, wherein a plug portion 1211 is provided at one end of the plunger 121 near the water inlet end 110a, the other end of the plunger 121 extends out of the piston channel 112, and for convenience of description, a portion of the plunger 121 extending out of the piston channel 112 may be referred to as an extending end, an abutment wall 1121 is provided at one end of the piston channel 112 near the water outlet end 110b, one end of the elastic member 122 abuts against the plug portion 1211, and the other end of the elastic member 122 abuts against the abutment wall 1121.

When the water drain valve 100 needs to be opened, an operator can apply a pulling force to the extending end of the plunger 121 to pull the plunger 121 out of the valve body 110, meanwhile, the elastic member 122 is compressed and shortened, the plug portion 1211 of the plunger 121 is far away from the common channel 113, and water flows through the common channel 113 and the water drain channel 111 in sequence, and finally flows out of the valve body 110; when the water drain valve 100 needs to be closed, an operator releases his hands, the elastic piece 122 resets, the plunger 121 is pushed back into the valve body 110, the plug portion 1211 of the plunger 121 seals the common channel 113, the water drain valve 100 can be automatically reset and closed without additional operation of the operator, and thus, the situation that the operation forgets to close the water drain valve 100 and the situation that the water drain valve is not closed in place is avoided.

For example, the elastic member 122 may be a spring, which is sleeved outside the plunger 121, one end of the spring abuts against the plug 1211 of the plunger 121, and the other end of the spring abuts against the abutment wall 1121 of the valve body 110, or the elastic member 122 may be another elastic member 122 such as a rubber member, which is not limited in this embodiment.

Fig. 3 is a schematic view of a plunger 121 according to an embodiment of the present utility model; fig. 4 is a partial enlarged view of a portion a in fig. 2. As shown in fig. 3 and 4, the end of the plug 1211 near the water inlet end 110a may be provided with a chamfer 1212, and the common channel 113 is provided with a sealing bevel 1131 matching the chamfer 1212, wherein the chamfer 1212 abuts against the sealing bevel 1131. The chamfering is a term in mechanical engineering, and can refer to machining of cutting edges and corners of a workpiece into a certain inclined plane or machining of the inclined plane on the edges. In the present specification, the chamfer 1212 refers to a chamfer formed on the edge, and the angle between the chamfer and the end surface of the plug 1211 may be 30 °, 45 ° or 60 °, etc., which is not limited in this embodiment.

In this way, the sealing slope 1131 and the plug 1211 can form a wire seal to enhance the tightness of the connection between the plug 1211 and the common channel 113, and it should be noted that the wire seal is a sealing manner, which is generally used at the connection of the pipeline, the valve, the pump, etc. for preventing the leakage of fluid and gas, and has the advantages of good sealing performance, simple installation, convenient maintenance, etc.

In practical applications, the plunger 121 and/or the valve body 110 may be plastic, which has good elasticity, can well achieve interference fit and sealing connection, and can also reduce cost. Illustratively, the plunger 121 and the valve body 110 may be plastic members, or one of the plunger 121 and the valve body 110 may be plastic members, so long as the chamfer 1212 and the sealing bevel 1131 are finally ensured to have a certain elasticity, which is not limited in this embodiment.

Illustratively, at least one sealing ring 1213 may be disposed around the periphery of the plug 1211 to enhance the sealing between the plug 1211 of the plunger 121 and the piston channel 112, thereby preventing water from flowing into the piston channel 112, and thus preventing the elastic member 122 in the piston channel 112 from being corroded, which may effectively increase the service life of the drain valve 100.

In practical applications, an annular mounting groove may be disposed on the outer periphery of the plug 1211, and the seal ring 1213 is disposed in the mounting groove to define the position of the seal ring 1213, so as to prevent the seal ring 1213 from falling out of the plug 1211 when the plug 1211 moves, thereby improving the sealing reliability.

Specifically, two sealing rings 1213 may be provided around the outer periphery of the plug 1211 to enhance the sealing between the plug 1211 and the piston passage 112 of the plunger 121, or three or more sealing rings 1213 may be provided around the outer periphery of the plug 1211, which is not limited in this embodiment.

Fig. 5 is a partial enlarged view of the portion B in fig. 1. As shown in fig. 5, the piston assembly 120 may further include a handle 123, the handle 123 being coupled to the protruding end of the plunger 121, the handle 123 extending away from the drain channel 111. The handle 123 can be used as a contact point, so that an operator can conveniently pull the plunger 121, and the handle 123 extends in a direction away from the water drainage channel 111, and when the plunger 121 is pulled, water can be prevented from flowing to the hands of the operator, so that the hands of the operator can be kept dry and clean.

For convenience of operation, the pressing surface of the handle 123 (i.e., the top surface of the handle 123 for pressing) may be provided with a concave portion 1231 to avoid finger slip, and the junction of the concave portion 1231 with the pressing surface may be set to arc transition to improve the comfort of pressing by a human hand.

In addition, the shape of the handle 123 may be a round shape, for example, the cross section of the handle 123 may be oval or racetrack, so as to avoid the damage of the corners to the hands, thereby improving the safety and comfort of the operation of the handle 123.

As shown in fig. 5, a latch assembly 130 may be disposed between the valve body 110 and the handle 123, and the latch assembly 130 is used to lock the valve body 110 and the piston assembly 120, so as to prevent the handle 123 from being accidentally discharged after being disturbed by an external force, thereby improving the closing reliability of the water drain valve 100.

The latch assembly 130 may include a latch 131 and a catch 132, wherein the latch 131 is disposed at the water outlet end 110b of the valve body 110, one end of the catch 132 is rotatably connected to the handle 123, the other end of the catch 132 is overlapped with the latch 131, and when the water drain valve 100 is in a closed state, the catch 132 is overlapped with the latch 131 to lock the valve body 110 and the piston assembly 120, so as to prevent the handle 123 from being accidentally drained after being disturbed by external force, thereby improving the reliability of closing the water drain valve 100; when it is desired to open the drain valve 100, the operator may rotate the catch 132, and remove the catch 132 from the tab 131 to unlock the valve body 110 and the piston assembly 120.

Specifically, the lapping block 131 may be a protrusion of the water outlet end 110b of the valve body 110, may be integrally formed with the valve body 110, and the hasp 132 may be a semi-annular structure, where an opening is rotatably connected to the handle 123, and an end opposite to the opening is used for lapping the lapping block 131.

In practical applications, both the handle 123 and the latch assembly 130 may be plastic pieces to reduce manufacturing costs and also to achieve a lightweight design.

By way of example, the valve body 110, the piston assembly 120, and the latch assembly 130 may all be plastic pieces, which may be made of PVC (Polyvinyl chloride ) and PP (Polypropylene).

In the embodiment in which the plastic member is made of PVC, the bending strength of the PVC sheet is 54MPa to 64MPa, the surface hardness is 97HB to 99HB, and the elastic bending modulus is 1950GPa to 2350GPa. It can be seen that the PVC plate has good strength, hardness and impact resistance, and is not easily damaged when the long distance transportation is performed, thereby being advantageous in avoiding the loss of the drain valve 100 during transportation. The Vicat softening temperature of the PVC plate is 78-85 ℃, is one of indexes for evaluating the heat resistance of materials and reflecting the physical and mechanical properties of products under the heated condition, and has good corrosion resistance. Meanwhile, the PVC plate also has good alkali resistance and low temperature resistance, so that the service life of the water drain valve 100 is prolonged, and the quality of the water drain valve 100 is improved.

In the embodiment in which the plastic member is made of PP, the PP sheet has a flexural strength of 45MPa to 52MPa, a surface hardness of 60HB to 70HB, and an elastic flexural modulus of 2250GPa to 2350GPa. It can be seen that the PP plate has good strength, hardness and impact resistance, and is not easily damaged when long-distance transportation is performed, thereby being advantageous in avoiding the loss of the drain valve 100 during transportation. The Vicat softening temperature of the PP plate is 72-75 ℃, and the Vicat softening temperature is one of indexes for evaluating the heat resistance of the material and reflecting the physical and mechanical properties of the product under the heated condition, so that the PP plate has good corrosion resistance. Meanwhile, the PP plate has good heat resistance, so that the service life of the water drain valve 100 is prolonged, and the quality of the water drain valve 100 is improved. Meanwhile, the PP plate has low water absorption, so that the water drain valve 100 is prevented from being corroded by water vapor, the service life of the water drain valve 100 is further prolonged, and the quality of the water drain valve 100 is guaranteed.

In the description of the present utility model, it should be understood that the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

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

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present specification, a description referring to terms "embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means 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 present utility model. In this specification, schematic representations of the above terms are not necessarily directed 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, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. The water drain valve is characterized by comprising a valve body and a piston assembly;

the piston assembly is movably connected with the piston channel, the water drain valve is provided with an opening state and a closing state, and in the opening state, the piston assembly is far away from the common channel; in a closed state, the piston assembly seals off the common passage.

2. The drain valve of claim 1, wherein the piston assembly includes a plunger and a resilient member;

the plunger is close to the one end of water inlet end is provided with stopper portion, the other end of plunger stretches out the piston passageway, the piston passageway is close to the one end of water outlet end is provided with the butt wall, the one end butt of elastic component in stopper portion, the other end butt of elastic component in the butt wall.

3. The drain valve of claim 2, wherein a chamfer is provided on an end of the plug portion adjacent the water inlet end, and a sealing bevel is provided in the common passage that mates with the chamfer, the chamfer abutting the sealing bevel.

4. A drain valve according to claim 3, wherein the plunger and/or the valve body is a plastic piece.

5. The drain valve of claim 2, wherein the plug portion is peripherally surrounded by at least one sealing ring.

6. The drain valve according to any one of claims 2-5, wherein the piston assembly further includes a handle connected to the protruding end of the plunger, the handle extending away from the drain passage.

7. The drain valve of claim 6, wherein the pressing surface of the handle is provided with a recess.

8. The drain valve of claim 6, wherein a latch assembly is disposed between the valve body and the handle, the latch assembly being configured to lock the valve body and the piston assembly.

9. The drain valve of claim 8, wherein the latch assembly includes a tab and a catch, the tab being disposed at the outlet end of the valve body, one end of the catch being rotatably coupled to the handle, the other end of the catch being overlapped with the tab.

10. The drain valve of any one of claims 1-5, wherein the valve body is interference fit to a water outlet of a mounting apparatus.