Valve assembly, dispensing pump and toning device

Abstract

The application relates to the field of automobile repair paint, and provides a valve assembly, an injection pump and a color adjusting device. According to the valve assembly provided by the application, a plurality of valve core structures are abutted by using an elastic member and a valve rod matched with the elastic member. One of the plurality of valve core structures is directly forced by the elastic member to realize abutment, and the remaining valve core structures are abutted by the valve rod. Specifically, since the elastic member is connected with the valve rod, the elastic member applies a force to the aforementioned one group of valve core structures in deformation, and also applies a force to the valve rod in the opposite direction of the force, so that the valve rod can apply a force to the remaining groups of valve core structures. The valve assembly realizes abutment of the plurality of valve core structures by arranging the elastic member, thereby facilitating the fixation of valve plates in each group of valve core structures. Compared with the complicated valve core fixation mode in the related art, the valve assembly according to the application is beneficial to simplifying the structure of the valve assembly and reducing the volume of the valve assembly and the injection pump applied thereto.

Description

Technical Field

[0001] This application relates to the field of pumps and valves, and in particular to a valve assembly, an injection pump, and a color mixing device. Background Technology

[0002] In related technologies, liquid mixing devices typically have an injection pump, which is used to controllably pump various raw materials into the mixing container through pipelines. The injection pump often changes its working state by opening and closing internally installed valves, such as high-flow injection (enabling rapid injection), low-flow injection (ensuring lower injection accuracy), reflux state (preventing the channels inside the pump valve from drying and blocking by liquid raw materials), and initial state, in which all flow channels inside the valve are in a liquid circuit disconnected state.

[0003] However, in related technologies, there is a type of valve called a disc valve, which changes the working state of the valve by changing the different mating passages on the discs through the contact of two discs. This type of valve is sealed by the end face and the outer circular surface of the valve. In the end face direction, in order to press the two discs together, a pressing structure needs to be set in the axial direction. When multiple sets of discs cooperate with each other to obtain more working state combinations, the internal valve core structure of the valve becomes more complicated and inefficient, which is not conducive to simplifying the structure of the injection pump and reducing the size of the discharge pump. Utility Model Content

[0004] In view of this, this application provides a valve assembly, an injection pump, and a color-matching device, with the aim of solving the above-mentioned technical problems to a certain extent.

[0005] According to a first aspect of this application, a valve assembly is provided for use in an injection pump, the valve assembly including multiple sets of valve core structures, each set of valve core structures including at least two valve plates arranged in a predetermined direction;

[0006] The valve assembly further includes a valve stem, which passes through each of the valve plates in the plurality of valve core structures;

[0007] The valve assembly further includes an elastic member that abuts against one of the plurality of valve core structures, such that the valve plate in the one valve core structure is subjected to a force along the predetermined direction and abuts against it sequentially; the elastic member is connected to the valve stem, such that the valve stem applies a force in the opposite direction to the predetermined direction to the remaining valve core structures in the plurality of valve core structures, thereby causing the valve plates in each of the remaining valve core structures to abut against it sequentially;

[0008] Each of the valve core structures is capable of moving relative to the valve stem along the predetermined direction.

[0009] Based on the above technical solutions, optionally, the valve stem includes a stem body and a stop portion corresponding to each of the other groups of valve core structures. The stop portion is fixedly connected to the stem body, and the stem body passes through each of the valve plates in the multiple groups of valve core structures. The stop portion is used to apply a force in the opposite direction to the predetermined direction to the corresponding group of valve core structures.

[0010] Optionally, based on any of the above technical solutions, the elastic member includes a spring having two ends opposite each other in a predetermined direction, one end of the spring abutting against the valve stem, and the other end of the spring being fixedly connected to the valve stem.

[0011] Optionally, based on any of the above technical solutions, the valve assembly further includes a housing having a valve cavity, the multiple sets of valve core structures being accommodated within the valve cavity, and the valve stem applying a force opposite to the predetermined direction to the remaining sets of valve core structures in the multiple sets of valve core structures to abut against the inner wall of the valve cavity.

[0012] Based on any of the above technical solutions, optionally, one of the valve plates in each of the multiple valve core structures faces the inner wall and is connected to the inner wall.

[0013] Based on any of the above technical solutions, optionally, the valve stem has an axis, the valve stem is rotatable about the axis, and one of the valve plates in each set of valve core structures rotates synchronously with the valve stem.

[0014] Optionally, based on any of the above technical solutions, the valve assembly further includes a housing having a valve cavity, the multiple valve core structures being housed within the valve cavity, the valve stem passing through the housing, and a portion of the valve stem being exposed outside the housing.

[0015] Optionally, based on any of the above technical solutions, the valve assembly further includes a sealing element, which is sleeved on the outside of the valve stem and located between the valve stem and the housing.

[0016] According to a second aspect of this application, an injection pump is provided, the injection pump including the valve assembly described above.

[0017] According to a third aspect of this application, a color-mixing apparatus is provided, the color-mixing apparatus including the valve assembly described above.

[0018] Thus, according to the valve assembly provided in this application, multiple sets of valve core structures are brought into contact using an elastic member and a valve stem that cooperates with the elastic member. Specifically, one of the aforementioned multiple sets of valve core structures is brought into contact by the elastic member applying force directly, while the remaining sets of valve core structures are brought into contact by the valve stem. Specifically, since the elastic member is connected to the valve stem, while the elastic member deforms and applies force to the aforementioned set of valve core structures, it also applies a force to the valve stem in the opposite direction, thereby enabling the valve stem to apply force to the remaining sets of valve core structures.

[0019] Thus, according to the valve assembly provided in this application, the valve assembly achieves abutment against all of the aforementioned multiple valve core structures by setting elastic members, thereby promoting the fixation of the valve plates within each valve core structure. Compared to the cumbersome valve core fixing methods in related technologies, the valve assembly according to this application simplifies the structure of the valve assembly and reduces the volume of the valve assembly and the injection pump used in it.

[0020] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic cross-sectional view of a first example of a valve assembly provided according to an embodiment of this application is shown.

[0023] Figure 2 A schematic cross-sectional view of another example of a valve assembly provided according to an embodiment of this application is shown.

[0024] Figure 3 A schematic cross-sectional view of a second example of a valve assembly provided according to an embodiment of this application is shown.

[0025] Figure label:

[0026] 100-Housing; 110-Valve cavity; 200-Valve core structure; 210-Valve plate; 300-Valve stem; 310-Protrusion; 320-Through hole; 400-Elastic member; 510-First pin; 520-Second pin. Detailed Implementation

[0027] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0031] According to a first aspect of the embodiments of this application, a valve assembly is provided. The structure and working principle of the valve assembly will be described in detail below with reference to the accompanying drawings.

[0032] According to the embodiments of this application, the valve assembly is used for an injection pump. The valve assembly includes multiple sets of valve core structures 200, and each set of valve core structures 200 includes at least two valve plates 210 arranged in a predetermined direction.

[0033] In one embodiment, the valve assembly further includes a valve stem 300, which passes through each valve disc 210 in one of the multiple sets of valve core structures 200. In another embodiment, the valve assembly further includes an elastic member 400, which abuts against one of the multiple sets of valve core structures 200, causing the valve disc 210 in that one set to be subjected to a force along a predetermined direction and abut against it sequentially. The elastic member 400 is connected to the valve stem 300, such that the valve stem 300 applies a force opposite to the predetermined direction to the remaining sets of valve core structures 200, thereby causing the valve discs 210 in each of the remaining sets of valve core structures 200 to abut against it sequentially. In this embodiment, each of the valve core structures is movable relative to the valve stem 300 along the predetermined direction.

[0034] Thus, according to the valve assembly provided in this application embodiment, multiple sets of valve core structures 200 are abutted using an elastic member 400 and a valve stem 300 cooperating with the elastic member 400. Specifically, one of the aforementioned multiple sets of valve core structures 200 is contacted by one end or part of the elastic member 400, thereby directly applying force to achieve abutment, while the remaining sets of valve core structures 200 are abutted by the valve stem 300. Specifically, since the other end or part of the elastic member 400 is connected to the valve stem 300, while the elastic member 400 deforms and applies force to the aforementioned set of valve core structures 200, it also applies a force to the valve stem 300 in the opposite direction, thereby enabling the valve stem 300 to apply force to the remaining sets of valve core structures 200. Since each of the valve core structures can move relative to the valve stem 300 along the predetermined direction, the gaps between the valve plates within the remaining sets of valve core structures 200 can be eliminated due to the aforementioned movement while the force is applied. See also Figure 3 ,exist Figure 3 In the example, the second pin 510 (or, for example, a protruding key) is located on the upper side, and a through hole 320 perpendicular to the valve stem 300 is provided in the valve stem 300. The through hole 320 extends along the axial direction of the valve stem 300 as a whole, so that while the second pin 510 passes through the valve stem 300 and limits the uppermost set of valve core structures, the valve core structures can also move along the axial direction of the valve stem 300 because the second pin 510 can move along the through hole 320 of the valve stem 300.

[0035] Thus, according to the valve assembly provided in the embodiments of this application, the valve assembly, by providing the elastic member 400, abuts against all of the aforementioned multiple sets of valve core structures 200, thereby promoting the compression and sealing of the valve plate 210 within each set of valve core structures 200. Compared to the cumbersome valve core compression methods in related technologies, the valve assembly according to the embodiments of this application simplifies the structure of the valve assembly and reduces the volume of the valve assembly and the injection pump used therein.

[0036] In this embodiment, the valve stem 300 may have an axial direction, and the valve stem 300 may sequentially pass through the aforementioned multiple sets of valve core structures 200 along this axial direction. In this embodiment, the valve stem 300 sequentially passing through the aforementioned multiple sets of valve core structures 200 means that the valve stem 300 passes through each valve plate 210 in each set of valve core structures 200. As an example, holes may be made in the aforementioned valve plates 210 for the valve stem 300 to pass through.

[0037] In an embodiment, as an example, the valve stem 300 may be, for example, a valve stem 300 having a columnar body, such as a cylindrical valve stem 300. In an embodiment, the valve stem 300 applies force to the valve core structure 200 by abutting against the valve core structure 200 through a protrusion 310 provided on the body of the valve stem 300, which will be described in detail below.

[0038] Furthermore, it should be noted that each valve core structure 200 can be formed by arranging at least two valve plates 210 sequentially. In the embodiment, the valve plate 210 can be, for example, a circular valve plate 210, and the valve plate 210 can be provided with structures such as flow channel holes. When adjacent valve plates 210 rotate, if the corresponding flow channel holes on adjacent valve plates 210 align with each other, fluid can be allowed to pass through. However, for the valve assembly provided according to the embodiments of this application, the structure of the valve plate 210 itself is not the focus of this application embodiment; it is only illustrated here. This type of stacked valve core structure 200 is prior art, and the valve assembly provided in the embodiments of this application aims to provide an implementation method that simplifies the fixing method of these valve core structures 200.

[0039] According to the valve assembly provided in the embodiments of this application, as described above, the valve stem 300 may include a stem body and a stop portion that is provided one-to-one with the other groups of valve core structures 200. The stop portion is fixedly connected to the stem body, and the stem body passes through each valve plate 210 in the multiple groups of valve core structures 200. The stop portion is used to apply a force in the opposite direction to the corresponding group of valve core structures 200.

[0040] In one embodiment, as an example, the elastic member 400 can store energy in a pre-compressed form and apply a thrust in a predetermined direction to one of the valve plates 210 in a set of valve core structures 200. Since the elastic member 400 is connected to the valve stem 300, the elastic member 400 also applies a thrust in the opposite direction to the valve stem 300, giving the valve stem 300 a tendency to move relative to each set of valve core structures 200. However, the valve stem 300 structure abuts against one of the valve plates 210 in each of the other sets of valve core structures 200, thereby preventing this tendency to move and causing the valve stem 300 to apply a thrust in the opposite direction to each of the other sets of valve core structures 200, thereby fixing the other sets of valve core structures 200.

[0041] In an embodiment, as an example, when the valve assembly is in use, the axial direction of the valve stem 300 can be, for example, vertical. That is, the aforementioned multiple sets of valve core structures 200 can be arranged at intervals along the vertical direction, and multiple valve plates 210 can be stacked along the vertical direction within each set of valve core structures 200. Furthermore, as an example, two valve plates 210 can be provided within each set of valve core structures 200.

[0042] According to the valve assembly provided in the embodiments of this application, as an example, the elastic member 400 can be, for example, a spring such as a helical spring, which will be described in the following description. In other examples, the elastic member 400 can be a structure such as an elastic sleeve made of a material such as rubber.

[0043] In one embodiment, as an example, the elastic member 400 can be connected to the valve stem 300 by providing a first pin 510, for example, by having the first pin 510 pass through both the elastic member 400 and the valve stem 300 to connect them together. In other examples, the first pin 510 can also be laterally inserted into the valve stem 300 to provide an abutment position for the elastic member 400, thereby forming an indirect connection between the elastic member 400 and the valve stem 300.

[0044] According to the valve assembly provided in the embodiments of this application, as described above, the elastic member 400 may include a spring. For example, the elastic member 400 may be a spring having two ends opposite to each other in a predetermined direction. One end of the spring abuts against one of the above-mentioned multiple valve core structures 200, and the other end of the spring is fixedly connected to the valve stem 300.

[0045] According to the valve assembly provided in the embodiments of this application, the valve assembly may further include a housing 100, which may have a valve cavity 110. The aforementioned multiple sets of valve core structures 200 may be accommodated within the valve cavity 110. As described above, the valve stem 300 may apply a force in the opposite direction to the other sets of valve core structures 200 among the multiple sets of valve core structures 200, so as to abut the other sets of valve core structures 200 against the inner wall of the valve cavity 110. That is, each set of valve core structures 200 may be clamped by the corresponding stop portion on the valve stem 300 and the inner wall of the valve cavity 110.

[0046] As an example, in the embodiment, the valve core structure 200 can be in two groups, namely, an upper valve core structure 200 and a lower valve core structure 200, according to the above orientation description. Each group of valve core structures 200 can have two tightly stacked valve plates 210.

[0047] In this embodiment, the valve chamber 110 may have two sub-cavities, each accommodating a set of valve core structures 200. A channel is also provided between the two sub-cavities for the valve stem 300 to pass through. However, it should be noted that the channel between the two sub-cavities is not used for communication between them; in other words, the two sub-cavities are not connected via the channel, which only serves to facilitate the passage of the valve stem 300. Therefore, as an example, a sealing ring may be fitted around the outer side of the portion of the valve stem 300 located within the channel to ensure that the two sub-cavities are not connected via the channel.

[0048] According to the valve assembly provided in the embodiments of this application, in each of the above-described multiple valve core structures 200, one valve plate 210 faces the inner wall and is connected to the inner wall. In an embodiment, in an example where each valve core structure 200 includes two valve plates 210, substantially both valve plates 210 face the inner wall, and the valve plate 210 that is not pushed by the valve stem 300 (for the upper valve core structure 200, it is the lower valve plate 210; for the lower valve core structure 200, it is the upper valve plate 210) can be connected to the inner wall.

[0049] In this embodiment, the connection to the inner wall can be, for example, a detachable connection. For instance, the connection to the inner wall can be a plug-in connection, such as a cylindrical protrusion provided on the inner wall, with a corresponding hole on the valve plate 210 for the protrusion to be inserted into.

[0050] As an example, the number of protrusions can be two, three or more, which can prevent the valve plate 210 from rotating relative to the housing 100.

[0051] In an embodiment, according to the valve assembly provided in this application, the valve stem 300 may have an axis, and the valve stem 300 is rotatable about the axis. One valve disc 210 in each valve core structure 200 can rotate synchronously with the valve stem 300. This valve disc 210 is the moving valve disc 210. As mentioned in the aforementioned working principle of the valve disc 210, the rotation of the valve disc 210 causes the flow channels of adjacent valve discs 210 to align, allowing fluid to pass through. In an embodiment, as an example, the valve stem 300 and the holes of the moving valve disc 210 can be connected by, for example, a key connection. Specifically, the length of the key in the axial direction of the valve stem 300 is less than the length of the keyway on the moving valve disc. This ensures that while the valve stem 300 transmits rotational force through the key and keyway, the moving valve disc moves axially relative to the valve stem 300, thereby ensuring that the moving valve disc in each group of valve discs 200 is in a compressed state.

[0052] According to the valve assembly provided in the embodiments of this application, the valve assembly further includes a housing 100, the housing 100 having a valve cavity 110, multiple sets of valve core structures 200 being housed within the valve cavity 110, and a valve stem 300 passing through the housing 100, with a portion of the valve stem 300 exposed outside the housing 100. The valve stem 300 exposed outside the housing 100 may, for example, be provided with a handle for an operator to rotate to adjust the position of the movable valve plate 210 in each set of valve core structures 200.

[0053] According to the valve assembly provided in the embodiments of this application, the valve assembly may further include a sealing element, which may be sleeved on the outside of the valve stem 300 and located between the valve stem 300 and the housing 100. Here, the sealing element may be a sealing ring as mentioned above. In addition to the sealing ring mentioned above, a sealing ring may also be provided in the channel of the housing 100 through which the valve stem 300 passes, sleeved on the outside of the valve stem 300.

[0054] According to a second aspect of the embodiments of this application, an injection pump is provided, which includes the valve assembly as described above and also has the aforementioned beneficial effects, which will not be repeated here.

[0055] According to a third aspect of the embodiments of this application, a color mixing device is provided, which includes the valve assembly as described above, and also includes the beneficial effects described above, which will not be repeated here.

[0056] The above are merely preferred embodiments of this application and do not limit the scope of protection of this application. Any equivalent structural transformations made based on the innovative concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the scope of protection of this application.

Claims

1. A valve assembly, characterized in that, The valve assembly is used for the injection pump, and the valve assembly includes multiple sets of valve core structures, each set of valve core structures including at least two valve plates arranged in a predetermined direction; The valve assembly further includes a valve stem, which passes through each of the valve plates in the plurality of valve core structures; The valve assembly further includes an elastic member that abuts against one of the plurality of valve core structures, such that the valve plate in the one valve core structure is subjected to a force along the predetermined direction and abuts against it sequentially; the elastic member is connected to the valve stem, such that the valve stem applies a force in the opposite direction to the predetermined direction to the remaining valve core structures in the plurality of valve core structures, thereby causing the valve plates in each of the remaining valve core structures to abut against it sequentially; Each of the valve core structures is capable of moving relative to the valve stem along the predetermined direction.

2. The valve assembly according to claim 1, characterized in that, The valve stem includes a stem body and a stop portion corresponding to each of the other valve core structures. The stop portion is fixedly connected to the stem body. The stem body passes through each valve plate in the multiple valve core structures. The stop portion is used to apply a force in the opposite direction to the predetermined direction to the corresponding valve core structure.

3. The valve assembly according to claim 1, characterized in that, The elastic member includes a spring having two ends opposite each other in a predetermined direction, one end of the spring abutting against the other end, and the other end of the spring being fixedly connected to the valve stem.

4. The valve assembly according to claim 1, characterized in that, The valve assembly further includes a housing having a valve cavity, in which the plurality of valve core structures are housed, and the valve stem applies a force opposite to the predetermined direction to the remaining valve core structures among the plurality of valve core structures to abut against the inner wall of the valve cavity.

5. The valve assembly according to claim 4, characterized in that, In each of the multiple valve core structures, one of the valve plates faces the inner wall and is connected to the inner wall.

6. The valve assembly according to claim 5, characterized in that, The valve stem has an axis and is rotatable about the axis, and one of the valve plates in each valve core structure rotates synchronously with the valve stem.

7. The valve assembly according to claim 1, characterized in that, The valve assembly further includes a housing having a valve cavity, the multiple valve core structures being housed within the valve cavity, the valve stem passing through the housing, and a portion of the valve stem being exposed outside the housing.

8. The valve assembly according to claim 7, characterized in that, The valve assembly further includes a sealing element, which is sleeved on the outside of the valve stem and located between the valve stem and the housing.

9. An injection pump, characterized in that, The injection pump includes a valve assembly as claimed in any one of claims 1 to 8.

10. A color mixing device, characterized in that, The color-matching device includes the valve assembly as described in claim 9.

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