Quantitative valve

Abstract

The utility model relates to a proportional valve which is used for distributing fluid in a tank body, and comprises a valve shell which comprises an inner shell which is provided with a bottom wall, a cylindrical peripheral wall, an inner shell cavity defined by the bottom wall and the cylindrical peripheral wall, and a cylindrical part extending from the bottom wall to the inner part of the inner shell cavity along the central axis of the inner shell, the inner shell cavity is divided into a plurality of cavity parts with different volumes by a plurality of radial partition plates extending between the cylindrical part and the cylindrical peripheral wall, an open hole is formed in the bottom wall part of each cavity part, and a removable plugging piece is arranged in each open hole; a cylindrical outer housing defining an outer housing chamber, the outer housing chamber having a first portion adapted to receive the inner housing and a second portion adapted to be connected to the can body; a spool extending through a through hole defined by the cylindrical portion and extending beyond a second portion of the housing chamber; the actuating mechanism is used for actuating the valve element to move between the first position and the second position.

Description

Technical Field

[0001] The utility model relates to the technical field of quantitative valves, in particular to a capacity-adjustable quantitative valve, such as a multi-capacity adjustable quantitative ether valve. Background Art

[0002] With the development of technology, metered ether valves are gradually being eliminated, but there is still a demand for metered ether valves of different capacities in the aftermarket. However, since metered ether valves require different ether injection volumes, there are many different types of metered ether valves. As the use of metered ether valves gradually decreases, the production cost of a single metered ether valve increases significantly, and the cost of maintaining the production line increases significantly. Many manufacturers have stopped production, resulting in a serious shortage of metered ether valves in the aftermarket.

[0003] However, in cold regions, machines prior to the technology upgrade required an ether combustion engine to start, but the existing continuous valve required access to an electronic control module (ECM) control panel to execute commands. Many older machines lacked the corresponding ECM controller, and it was impossible to modify the entire control system to use a continuous ether valve. A large number of aftermarket machines on the market still require a metered ether valve. As suppliers upgrade their technology, the supply of these older metered valves has become scarce. In this situation, developing an integrated, multi-capacity, adjustable metered ether valve to meet these requirements while consolidating existing production capacity would not only resolve the technical issues but also reduce production costs. Utility Model Content

[0004] In order to overcome at least one aspect of the above problems, the present invention provides a metering valve, which can obtain metering valves with different capacities by changing the valve body structure, and the various capacities of the metering valve are adjustable / switchable.

[0005] The utility model provides a metered-measurement valve for dispensing fluid in a tank, the metered-measurement valve comprising: a valve housing, the valve housing comprising: an inner housing, the inner housing comprising a bottom wall, a cylindrical peripheral wall, an inner housing chamber defined by the bottom wall and the cylindrical peripheral wall, and a cylindrical portion extending from the bottom wall within the inner housing chamber along the central axis of the inner housing, the inner housing chamber being divided into a plurality of chamber portions with different volumes by a plurality of radial partitions extending between the cylindrical portion and the cylindrical peripheral wall, wherein an opening is provided in the bottom wall portion of each chamber portion, and a removable blocking member is provided in the opening; and a cylindrical outer housing. , the outer shell defines an outer shell chamber, which has a first portion suitable for receiving the inner shell and a second portion suitable for connecting to the tank body; a valve core, the valve core extends through the through-hole defined by the cylindrical portion and extends beyond the second portion of the outer shell chamber; an actuating mechanism, the actuating mechanism is used to actuate the valve core to move between a first position and a second position, wherein in the first position, at least one chamber portion of the plurality of chamber portions is in fluid communication with the interior of the tank body, and the metered dose valve is in a closed state; in the second position, the valve core closes the fluid communication between the interior of the tank body and the inner shell chamber, and the metered dose valve is in an open state.

[0006] In the above solution, by providing an inner housing having a plurality of chamber portions with different volumes, the metered dose valve can provide a plurality of different capacities.

[0007] According to a preferred embodiment of the present invention, the outer circumferential surface of the cylindrical circumferential wall of the inner shell is provided with an external thread, and the inner circumferential wall of the first part of the outer shell chamber is provided with a first internal thread, and the inner shell is sealed and connected to the outer shell by the cooperation of the external thread and the first internal thread.

[0008] According to one solution of the present invention, the inner peripheral wall of the second portion of the outer shell chamber is provided with a second internal thread, and the metering valve is sealedly connected to the tank body by matching the second internal thread with the external thread on the connecting portion of the tank body.

[0009] In one embodiment, the actuating mechanism includes a stator base having a base through-hole, an armature arranged in the base through-hole in a clearance-fit manner, a coil arranged around the stator base, and a return spring sleeved on the valve core, the armature being arranged to abut the valve core, and the actuating mechanism being configured such that when the coil is energized, the armature pushes the valve core toward the valve housing to the second position, and when the coil is de-energized, the valve core returns to the first position under the action of the restoring force of the return spring.

[0010] According to a preferred embodiment of the present invention, the inner shell has an open end away from the bottom wall, and the inner circumferential wall section of the inner shell chamber close to the open end is provided with a third internal thread, and the stator base is sealedly connected to the inner shell by the cooperation of the threaded adapter and the third internal thread.

[0011] In one aspect, the valve core is in the shape of a rod and has a first end abutting against the armature and a second end extending beyond the outer housing cavity of the outer housing.

[0012] In one solution of the present invention, the end of the stator base away from the valve core constitutes the injection end of the metering valve, the through hole of the stator base is a stepped hole, and the stepped portion of the stepped hole constitutes the limit stop portion of the armature.

[0013] According to a preferred embodiment of the present invention, the inner shell chamber is divided into three chamber portions with different volumes by the three radial partitions. The openings of the three chamber portions are circular holes with the same diameter, and each circular hole is provided with the same blocking member. The three chamber portions are respectively a first chamber portion with a first volume, a second chamber portion with a second volume, and a third chamber portion with a third volume. For example, the first volume can be 2.25 cm 3 , the second volume can be 6.0cm 3 and the third volume may be 12.0 cm 3 According to specific needs, for example, when the blocking piece in the first chamber is removed and the openings in the second and third chambers are still closed, a volume of 2.25 cm 3 For example, if the blocking member in the second chamber is removed and the openings in the first and third chambers are still closed, a volume of 6.0 cm 3 For example, if the blocking member in the third chamber is removed and the openings in the first and second chambers are still closed, a volume of 12.0 cm 3 A metering valve with other capacities can be provided by removing the two blocking members. This metering valve can provide up to seven different capacities. It should be understood that the number of three radial partitions and the number of chambers are merely exemplary. For example, two radial partitions can be provided to obtain two chambers, or four partitions can be provided to obtain four chambers, which are also within the scope of this application.

[0014] According to a preferred embodiment of the present invention, the sealing member in each chamber portion includes a bolt and a sealing washer. Since each opening and bolt are identical, when the metering valve needs to be switched, the bolt and sealing washer in one chamber portion can be removed and installed in another already opened opening.

[0015] According to the present invention, the quantitative valve is preferably a quantitative ether valve, and the tank body is an ether tank for holding ether. However, it should be understood that the quantitative valve according to the present invention can also be used to distribute other types of fluids.

[0016] In response to the existing quantitative valves / quantitative ether valves on the market, the utility model provides a multi-capacity adjustable quantitative valve / quantitative ether valve to meet the needs of different quantitative ether valves. Through structural modification and design, this product provides a valve body with multiple chambers of different volumes to meet the application needs of ether valves of different capacities. Therefore, it can not only improve the problem of single function, small quantity and suspension of production and supply of quantitative ether valves, but also solve the different needs of customers through unified design and win more after-sales service market. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The features and advantages of the present invention will be clearly understood through the detailed description provided below with reference to the accompanying drawings. It should be understood that the following drawings are merely schematic and not necessarily drawn to scale, and therefore should not be considered as limiting the present invention, wherein:

[0018] Figure 1 is a perspective view of an embodiment of a metered dose valve according to the present utility model;

[0019] Figure 2 for Figure 1 A cross-sectional view of the metering valve shown;

[0020] Figure 3 for Figure 1 Another cross-sectional view of the metering valve shown;

[0021] Figure 4 for Figure 3 A magnified view of part A in FIG;

[0022] Figure 5 for Figure 3 A magnified view of part B in FIG;

[0023] Figure 6 It is a front view of an embodiment of the inner shell according to the present utility model;

[0024] Figure 7 for Figure 6 A cross-sectional view of the inner housing is shown;

[0025] Figure 8 for Figure 6 A top view of the inner housing is shown;

[0026] Figure 9 for Figure 6 A bottom view of the inner housing is shown;

[0027] Figure 10A perspective view of a quantitative ether valve according to the present invention installed on an ether tank; and

[0028] Figure 11 for Figure 10 A cross-sectional view of the assembled metered ether valve and ether tank is shown. DETAILED DESCRIPTION

[0029] Embodiments of the present invention are described below with reference to the accompanying drawings. In the following description, many specific details are set forth to enable those skilled in the art to more fully understand and implement the present invention. In addition, it should be understood that the present invention is not limited to the specific embodiments described. Instead, it is contemplated that the present invention may be implemented using any combination of the features and elements described below, regardless of whether they relate to different embodiments. Therefore, the following aspects, features, embodiments, and advantages are for illustrative purposes only and should not be considered as elements or limitations of the claims unless expressly set forth in the claims.

[0030] When terms such as "first" and "second" are used to describe elements of the present application, these terms are used only to distinguish between the elements and are not intended to limit the nature, order, or number of the elements. The terms "including" and "having" are used to express an open-ended inclusiveness and indicate that additional elements / components may be present in addition to the listed elements / components. "Left" and "right" refer to directions when the viewer is facing the page.

[0031] Figure 1 An embodiment of a multi-capacity adjustable metering valve 100 according to the present invention, such as a metering ether valve, is shown. As used herein, a "metering valve" is a device for controlling flow, precisely controlling the amount of fluid, thereby achieving quantitative control of the fluid. In this embodiment, the metering ether valve is used to dispense / inject ether from an ether tank 40 into, for example, an engine.

[0032] Figure 2 and Figure 3 The figures show different cross-sectional views along the longitudinal axis of a metered dose valve 100. As can be seen from the figures, the metered dose valve 100 comprises a valve housing 1, a valve core 2, and an actuating mechanism 3 for the valve core. The valve housing 1 comprises an inner housing 10 and an outer housing 20. The outer housing 20 is cylindrical and defines an outer housing chamber 23. The outer housing chamber 23 comprises a first portion 230 separated by an optional partition, the first portion being adapted to receive the entire inner housing 10, and a second portion 230 being adapted to be connected to a tank, such as the mouth of an ether tank.

[0033] See also Figure 6 、 Figure 7 、 Figure 8 and Figure 9, respectively show different views of an embodiment of the inner shell 10 according to the present utility model. As can be seen from the figure, the inner shell 10 has a bottom wall 11, a cylindrical circumferential wall 12, and an inner shell chamber 13 defined by the bottom wall and the cylindrical circumferential wall. A cylindrical portion 14 is provided in the inner shell chamber 13, which extends from the bottom wall 11 along the central axis of the inner shell, and the cylindrical portion 14 defines a through hole 140 extending through the bottom wall. The outer circumferential surface of the cylindrical circumferential wall of the inner shell 10 is provided with an external thread 101, and the inner circumferential wall of the first part of the outer shell chamber 23 is provided with a first internal thread 25. The inner shell is screwed into the first part of the outer shell chamber by the cooperation of the external thread and the first internal thread and is sealed and connected to the outer shell 20. The inner circumferential wall of the second part 230 of the outer shell chamber is provided with a second internal thread 26 (see Figure 4 ), the metering valve 100 is sealedly connected to the tank body 40 by matching the second internal thread 26 of the outer shell cavity with the external thread on the tank mouth connecting part of the tank body.

[0034] Advantageously, the inner housing chamber 13 is divided into three chamber sections with different volumes by three radial partitions 15 extending between the cylindrical portion 14 and the cylindrical circumferential wall 12, particularly between the outer circumference of the cylindrical portion 14 and the inner surface of the cylindrical circumferential wall. Each chamber section is provided with an opening 16, such as a circular hole, in the bottom wall portion of each chamber section, the three circular holes having the same diameter. Before the metering valve is installed in the tank body, removable sealing members 16a may be provided in at least two of the openings. In a preferred embodiment, all three openings are provided with sealing members 16a. When the metering valve is applied to the corresponding tank body to quantitatively dispense the fluid therein, the sealing members in the corresponding chamber section can be removed as needed to open the opening to provide the required capacity. The sealing members are preferably a combination of bolts and sealing washers. Each bolt is identical and can be used to close any of the three circular holes. It should be understood that the number of partitions and chamber sections is merely exemplary. In alternative embodiments, two radial partitions may be used to obtain two chamber portions, or four radial partitions may be used to obtain four chamber portions, which are also within the scope of the present application.

[0035] In a preferred embodiment, the three chamber portions of the inner shell 10 are respectively a first chamber portion 151 having a first volume, a second chamber portion 152 having a second volume, and a third chamber portion 153 having a third volume, wherein the first volume is 2.25 cm 3 , the second volume is 6.0cm 3 and the third volume is 12.0 cm 3 By configuring the inner housing in this way, a metered-dose valve with various capacities can be provided. For example, when the opening 16 of the first chamber portion 151 is opened and the openings of the other chamber portions are closed, the first chamber portion can be in fluid communication with the interior of the tank, thereby metering 2.25 cm 3The fluid is delivered to the first chamber, and then the metered valve can quantitatively dispense 2.25cm 3 Similarly, the opening of the second chamber portion 152 is opened, while the openings of the other chamber portions are closed, and the metered valve can quantitatively dispense 6.0 cm 3 The opening of the third chamber portion 153 is opened, while the openings of the other chamber portions are closed, and the metering valve can quantitatively dispense 12.0 cm 3 Advantageously, when the openings of two of the chambers are opened, 8.25 cm can be quantitatively dispensed. 3 , 14.25cm 3 or 18cm 3 When all three openings are fully opened, a 20.25cm 3 It can be seen that the metering valve according to the present invention can provide up to seven different capacities as needed.

[0036] In one embodiment, the actuating mechanism 3 includes a stator base 31 having a base through-hole 30, an armature 32 disposed in the base through-hole 30 with a clearance fit, a coil 33 disposed around the stator base, and a return spring (not shown) sleeved on the valve core. The armature is disposed to abut the first end of the valve core 2. An end 311 of the stator base 31 away from the valve core constitutes the injection end of the metered dose valve. The base through-hole 20 is configured as a stepped hole, and the stepped portion 32a of the stepped hole constitutes a stop for the armature 32. The actuating mechanism 3 is used to actuate the valve core 2 in the first position ( Figure 2 and Figure 3 The valve core 2 can be moved between a first position (shown) and a second position (not shown). In the first position, at least one of the three chamber portions is in fluid communication with the interior of the tank body 40, and the metered-dose valve 100 is closed. In the second position, the second end of the valve core 2 seals the fluid communication between the interior of the tank body and the chamber portions of the inner housing chamber, and the metered-dose valve 100 is open, i.e., capable of ejecting fluid from the metered-dose valve. In the above embodiment, the actuating mechanism is configured such that when the coil 33 is energized, the actuating armature 32 pushes the valve core 2 toward the valve housing 1 to the second position. When the coil 33 is de-energized, the valve core returns to the first position under the restoring force of the return spring.

[0037] See again Figure 2The valve core 2 extends through the through-hole 140 defined by the cylindrical portion 14 and extends beyond the second portion 230 of the outer housing chamber 23. In this embodiment, the valve core 2 is a rod-shaped valve core having a first end proximate to the actuating mechanism 3 and a second end extending beyond the outer housing chamber 23. Specifically, the first end of the valve core 2 abuts the armature 32, while the second end extends beyond the outer housing chamber 23 of the outer housing 20 to seal the fluid outlet of the tank. Furthermore, to enable the valve core 2 to open and close the outlet of the metered dose valve when moving between the first and second positions, the valve core 2 has a reduced diameter section 2a between the first end and the cylindrical portion, and adjacent to the cylindrical portion.

[0038] See also Figure 7 In one embodiment, the inner housing 10 has an open end 17 remote from the bottom wall 11. A portion of the inner circumferential wall of the inner housing chamber near the open end is provided with a third internal thread 170. The stator base 31 is sealedly connected to the inner housing 10 through the engagement of the threaded adapter 5 with the third internal thread. In this embodiment, the threaded adapter 5 may have a first connecting section with a larger diameter and a second connecting section with a smaller diameter. Both the first and second connecting sections are provided with external threads. The external threads of the first connecting section engage with the third internal threads of the inner housing, while the external threads of the second connecting section engage with the internal threads of the stator base.

[0039] Industrial Applicability

[0040] See also Figure 10 and Figure 11 , below takes the quantitative ether valve as an example to describe the working process of the quantitative ether valve installed on the ether tank. Under normal use, the ether tank is in an inverted state.

[0041] Before installing the quantitative ether valve, the blocking piece in the opening of at least one of the three chamber parts of the inner shell can be removed, for example, the blocking piece with a volume of 2.25 cm 3 The opening 16 in the first chamber portion 151 is removed to provide a volume of 2.25 cm 3 Quantitative ether valve.

[0042] exist Figure 11 In the state shown, the quantitative ether valve is in the first position, wherein the interior of the ether tank is in fluid communication with the first chamber portion 151 of the inner housing 10 of the quantitative ether valve, thereby transferring 2.25 cm 3The ether is stored in the first chamber. At this time, the larger diameter section of the valve core 2 is sealed with the threaded adapter to close the injection port of the metered ether valve. When the coil 33 is energized, the armature 32 pushes the valve core downward to the second position. The valve core closes the fluid communication between the interior of the ether tank and the first chamber. The first chamber is in fluid communication with the injection port of the metered ether valve. The metered ether valve is in the open state. At this time, the 2.25 cm in the first chamber can be discharged. 3 The ether is sprayed into the combustion-supporting system to support combustion. After the coil 33 is de-energized, the valve core returns to the first position under the effect of the restoring force of the return spring.

[0043] As needed, other blocking components can be removed to provide an ether valve with the desired capacity. Thus, the quantitative ether valve of the present invention, through structural improvements to the inner housing, can meet the need for different quantitative ether injections from the same valve body. This quantitative ether valve is well suited to aftermarket needs, and its quantitative combination can increase the usage of quantitative ether valves.

[0044] Although the present invention is described above by taking a quantitative ether valve as an example, the structural configuration of the present invention can also be applied to other multi-capacity adjustable quantitative valves with similar requirements.

[0045] It will be apparent to those skilled in the art that various modifications and variations may be made to the embodiments disclosed above without departing from the scope or spirit of the present invention. Other embodiments of the present invention will be apparent to those skilled in the art from the practice of the present invention disclosed herein. This specification and the examples disclosed herein should be considered as illustrative only, and the true scope of the present invention is indicated by the appended claims and their equivalents.

Claims

1. A metering valve for distributing fluid in a tank, characterized in that: The metering valve (100) comprises: A valve housing (1), comprising: An inner shell (10), the inner shell comprising a bottom wall (11), a cylindrical peripheral wall (12), an inner shell chamber (13) defined by the bottom wall and the cylindrical peripheral wall, and a cylindrical portion (14) extending from the bottom wall within the inner shell chamber (13) along a central axis of the inner shell, the inner shell chamber being divided into a plurality of chamber portions having different volumes by a plurality of radial partitions (15) extending between the cylindrical portion (14) and the cylindrical peripheral wall (12), wherein an opening (16) is provided in the bottom wall portion of each chamber portion, and a removable blocking member (16a) is provided in the opening; a cylindrical outer shell (20) defining an outer shell chamber (23) having a first portion adapted to receive the inner shell (10) and a second portion (230) adapted to be connected to the tank; a valve core (2) extending through a through hole (140) defined by the cylindrical portion (14) and extending beyond the second portion (230) of the outer housing chamber; An actuating mechanism (3) is provided, wherein the actuating mechanism (3) is used to actuate the valve core (2) to move between a first position and a second position, wherein in the first position, at least one of the plurality of chamber portions is in fluid communication with the interior of the tank body, and the metering valve is in a closed state; and in the second position, the valve core closes the fluid communication between the interior of the tank body and the chamber of the inner shell, and the metering valve is in an open state.

2. The metering valve according to claim 1, characterized in that The outer peripheral surface of the cylindrical peripheral wall of the inner shell (10) is provided with an external thread (101), and the inner peripheral wall of the first part of the outer shell chamber is provided with a first internal thread (25). The inner shell is sealed and connected to the outer shell through the cooperation of the external thread and the first internal thread.

3. The metering valve according to claim 2, characterized in that The inner peripheral wall of the second portion (230) of the outer shell chamber is provided with a second internal thread (26), and the quantitative valve is sealedly connected to the tank body by matching the second internal thread (26) with the external thread on the connecting portion of the tank body.

4. The metering valve according to any one of claims 1 to 3, characterized in that The actuating mechanism (3) comprises a stator base (31) having a base through hole (30), an armature (32) arranged in the base through hole (30) in a clearance fit manner, a coil (33) arranged around the stator base, and a return spring sleeved on the valve core, wherein the armature is arranged to abut against the valve core (2), and the actuating mechanism is configured such that when the coil (33) is energized, the armature pushes the valve core toward the valve housing (1) to the second position, and when the coil (33) is de-energized, the valve core returns to the first position under the action of the restoring force of the return spring.

5. The metering valve according to claim 4, characterized in that The inner housing (10) has an open end (17) away from the bottom wall, and a third internal thread (170) is provided on the inner peripheral wall portion of the inner housing chamber near the open end. The stator base (31) is sealedly connected to the inner housing (10) through the cooperation of a threaded adapter (5) and the third internal thread.

6. The metering valve according to claim 4, characterized in that The valve core (2) is in the shape of a rod and has a first end abutting against the armature and a second end extending beyond the cavity of the outer shell.

7. The metering valve according to claim 6, characterized in that One end (311) of the stator base (31) away from the valve core constitutes the injection end of the metering valve, the through hole of the stator base is a stepped hole, and the stepped portion of the stepped hole constitutes a limit stop portion of the armature.

8. The metered-dose valve according to any one of claims 1 to 3, characterized in that: The inner shell chamber is divided into three chamber parts with different volumes by the three radial partitions (15), the openings of each of the three chamber parts are circular holes with the same diameter, and each of the circular holes is provided with the same sealing member, and the three chamber parts are respectively a first chamber part (151) with a first volume, a second chamber part (152) with a second volume, and a third chamber part (153) with a third volume.

9. The metering valve according to claim 8, characterized in that The blocking member (16a) comprises a bolt and a sealing washer.

10. The metered-dose valve according to any one of claims 1 to 3, characterized in that: The quantitative valve is a quantitative ether valve, and the tank body is an ether tank for containing ether.

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