Valve element for injection device, linkage assembly for valve element and injection device

Abstract

The utility model belongs to the technical field of general cleaning, and particularly relates to a valve element for an injection device, a linkage assembly for the valve element and the injection device, the valve element for the injection device comprises an on-off diaphragm, a piston of the on-off diaphragm is suitable for extending into a flow channel through a mounting hole, and a diaphragm of the on-off diaphragm is suitable for abutting against a hanging table of the mounting hole to seal the flow channel; the linkage assembly is arranged in the mounting hole, the inner end of the linkage assembly is connected with the piston, and the linkage assembly is suitable for pushing the piston to cut off the runner; wherein the outer end part of the linkage assembly is suitable for being connected with a handle of a spraying device; when the spraying device is used, the handle is pressed to enable the linkage assembly to drive the piston to move reversely so as to open the flow channel. According to the valve element for the injection device, in the process of opening and closing the flow channel, only the piston moves, the membrane does not move, and the membrane is always pressed on the hanging table, so that the problems that the sealing position of the membrane is displaced or abraded due to opening and closing of the flow channel, and then sealing failure is caused are solved.

Description

Technical Field

[0001] This utility model belongs to the field of general cleaning technology, specifically relating to cleaning with air jet force, and particularly to a valve core for a jetting device, a linkage component for the valve core, and a jetting device. Background Technology

[0002] On semiconductor production lines, wafer cassettes, tanks, and equipment tables often require large amounts of water and gas for cleaning and drying.

[0003] In related technologies, a water-air gun is generally used to connect to a water pipe or an air pipe to clean semiconductors. For example, a "high-purity water-air gun" with publication number "CN103357530A" uses a valve core to control the opening and closing of the flow channel. Specifically, one end of the valve core blocks the flow channel, and the other end extends out of the high-purity water-air gun. The valve core is moved by a pressure plate to open the flow channel. However, in this solution, the sealing problem is solved by fitting a sealing ring on the side wall of the valve core. However, the valve core needs to be moved every time the flow channel is opened and closed. This movement can easily cause the sealing ring to wear, shift, or other problems, leading to sealing failure.

[0004] Therefore, how to solve the technical problem that the sealing ring is prone to failure due to wear and / or displacement during the movement of the valve core is a problem that urgently needs to be solved by those skilled in the art.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content

[0006] This disclosure provides at least one valve core for an injection device, a linkage assembly for the valve core, and an injection device.

[0007] In a first aspect, embodiments of this disclosure provide a valve core for an injection device, the injection device having a flow channel and a mounting hole communicating with the flow channel, the valve core being adapted to be disposed within the mounting hole and extending into the flow channel, the valve core comprising: a switching diaphragm, the piston of the switching diaphragm being adapted to extend into the flow channel through the mounting hole, the diaphragm being adapted to abut against a mounting plate of the mounting hole to seal the flow channel; and a linkage assembly, disposed within the mounting hole and having its inner end connected to the piston, adapted to push the piston to cut off the flow channel; wherein the outer end of the linkage assembly is adapted to be connected to a handle of the injection device; when the injection device is in use, pressing the handle causes the linkage assembly to drive the piston to move in the opposite direction to open the flow channel.

[0008] In an alternative embodiment, the linkage assembly comprises a connecting shaft and a reset spring; wherein the inner end of the connecting shaft is connected with the piston, and the outer end of the connecting shaft is connected with the handle; the reset spring is sleeved on the connecting shaft and is adapted to push the connecting shaft to drive the piston to cut off the flow passage; when the injection device is in use, the connecting shaft drives the piston to move reversely to open the flow passage by pressing the handle.

[0009] In an alternative embodiment, the linkage assembly further comprises a limiting sleeve; wherein the side wall of the limiting sleeve is provided with external threads, which are adapted to be connected with the internal threads of the mounting hole by matching, and the limiting sleeve is adapted to seal the flow passage by the inner end face against the diaphragm after being connected.

[0010] In an alternative embodiment, a guide portion is formed in the limiting sleeve, and the side wall of the connecting shaft is provided with a guide ring; wherein the guide ring is located in the guide portion.

[0011] In an alternative embodiment, the diaphragm is provided with a flange on the side facing the inner end of the piston.

[0012] In an alternative embodiment, a receiving portion is further formed in the limiting sleeve; one end of the reset spring extends into the receiving portion and abuts against it, and the other end of the reset spring abuts against the guide ring.

[0013] In an alternative embodiment, the limiting sleeve is provided with a relief hole; the inner end of the connecting shaft is threadedly connected with the piston, and the outer end of the connecting shaft extends out of the limiting sleeve through the relief hole and is connected with the handle.

[0014] In a second aspect, the embodiments of the present disclosure further provide a linkage assembly for a valve core, comprising a connecting shaft, a reset spring and a limiting sleeve; wherein a guide portion is formed in the limiting sleeve; the side wall of the connecting shaft is provided with a guide ring; the guide ring is located in the guide portion.

[0015] In an alternative embodiment, a receiving portion is further formed in the limiting sleeve; the reset spring is sleeved on the connecting shaft; one end of the reset spring extends into the receiving portion and abuts against it, and the other end of the reset spring abuts against the guide ring.

[0016] In a third aspect, the embodiments of the present disclosure further provide an injection device, comprising: an injection device body, in which a flow passage and a mounting hole communicating with the flow passage are formed; a valve core for an injection device as described above; wherein the valve core is arranged in the mounting hole and extends into the flow passage to open and cut off the flow passage.

[0017] The utility model discloses beneficial effect is, the valve core of this injection device, the linkage assembly of valve core and the on-off diaphragm of injection device only have the piston in the process of opening and closing flow channel, and the diaphragm will not move, and the diaphragm is always pressed on the hanging platform, thereby avoid the displacement or abrasion of the sealing of diaphragm caused by opening and closing flow channel and other problems, and further cause the sealing failure.

[0018] Other features and advantages of the present utility model will be set forth in the following description of the application, and in part will become apparent to those skilled in the art upon examination of the following or can be learned by practice of the present utility model. The objects and other advantages of the present utility model will be realized and attained by the structure particularly pointed out in the description and the drawings.

[0019] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the preferred embodiments are described in detail in this paper, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the drawings needed in the specific embodiment or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.

[0021] Figure 1 A structure schematic diagram of a valve core of a kind of injection device provided by the embodiment of the present disclosure is not shown with valve core;

[0022] Figure 2 A structure schematic diagram of a kind of injection device provided by the embodiment of the present disclosure is shown with valve core;

[0023] Figure 3 A structure schematic diagram of the linkage assembly of a kind of valve core provided by the embodiment of the present disclosure is shown;

[0024] Figure 4 A structure schematic diagram of the on-off diaphragm of a kind of valve core provided by the embodiment of the present disclosure is shown;

[0025] Figure 5 A structure schematic diagram of a kind of injection device provided by the embodiment of the present disclosure is shown.

[0026] In the drawing:

[0027] Valve core 10;

[0028] On-off diaphragm 1, piston 11, threaded hole 111, diaphragm 12, flange 121;

[0029] Linkage assembly 2, connecting shaft 21, guide ring 211, return spring 22, limit sleeve 23, external thread 231, guide part 232, receiving part 233, clearance hole 234;

[0030] 3. Spraying device 3, flow channel 31, mounting hole 32, mounting platform 33, handle 34, spraying device body 35, hook 36, nozzle 37. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0032] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the figures, the thickness of parts may be exaggerated or reduced for the purpose of effectively depicting the technical content.

[0033] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0034] like Figure 1 , Figure 2 As shown, at least one embodiment provides a valve core for an injection device. The injection device 3 has a flow channel 31 and a mounting hole 32 communicating with the flow channel 31. The valve core 10 is adapted to be disposed in the mounting hole 32 and extend into the flow channel 31.

[0035] In this embodiment, the flow channel 31 is used for the flow of the medium, and the mounting hole 32 is used for installing the valve core 10. After installation, the valve core 10 will extend into the flow channel 31 to control the opening and closing of the flow channel 31.

[0036] like Figure 2 As shown, in some embodiments, the valve core 10 includes: a switching diaphragm 1 and a linkage assembly 2; the linkage assembly 2 is connected to the piston 11 of the switching diaphragm 1, thereby pushing the piston 11 of the switching diaphragm 1 into the flow channel 31 and cutting off the flow channel 31. At the same time, after the linkage assembly 2 is installed in place, it will press down on the diaphragm 12 of the switching diaphragm 1, so that the diaphragm 12 is pressed tightly on the mounting platform 33 of the mounting hole 32, thereby preventing the medium in the flow channel 31 from flowing out of the mounting hole 32.

[0037] In this embodiment, the outer end of the linkage component 2 is connected to the handle 34 of the injection device 3. When it is necessary to open the flow channel 31, pressing the handle 34 causes the linkage component 2 to pull the piston 11 of the switching diaphragm 1 away from the flow channel 31 (the direction of movement is F in the figure), thereby opening the flow channel 31.

[0038] In this embodiment, during the opening and closing of the flow channel 31, only the piston 11 moves, while the diaphragm 12 does not move. The diaphragm 12 is always pressed against the mounting platform 33, thereby avoiding problems such as displacement or wear of the sealing part of the diaphragm 12 due to the opening and closing of the flow channel 31, which could lead to sealing failure.

[0039] like Figure 2 As shown, in some embodiments, the linkage component 2 includes a connecting shaft 21 and a return spring 22; the inner end of the connecting shaft 21 is connected to the piston 11, and the outer end is connected to the handle 34. The connecting shaft 21 drives the piston 11 to move in the F direction by pressing the handle 34, thereby opening the flow channel 31; while the function of the return spring 22 is to push the connecting shaft 21 when the handle 34 is released, so that the connecting shaft 21 drives the piston 11 to return to its original position, thereby cutting off the flow channel 31.

[0040] like Figure 2 As shown, in some embodiments, the linkage component 2 further includes a limiting sleeve 23, the side wall of the limiting sleeve 23 is provided with an external thread 231, and the limiting sleeve 23 is threadedly connected to the mounting hole 32 through the external thread 231.

[0041] In this embodiment, when the connection is completed, the inner end face of the limiting sleeve 23 abuts against the diaphragm 12, so that the diaphragm 12 is pressed tightly against the mounting platform 33 of the mounting hole 32, thereby achieving a sealing effect.

[0042] like Figure 3 As shown, in some embodiments, a guide portion 232 is provided inside the limiting sleeve 23, and a guide ring 211 is provided on the side wall of the connecting shaft 21. The guide ring 211 slides with the guide portion 232 of the limiting sleeve 23, thereby guiding the movement direction of the connecting shaft 21 and preventing the piston 11 connected to the connecting shaft 21 from being misaligned when the flow channel 31 is cut off, which would lead to sealing failure.

[0043] like Figure 3 As shown, in some embodiments, the limiting sleeve 23 is further provided with a receiving portion 233; one end of the return spring 22 extends into the receiving portion 233 and abuts against it, and the other end abuts against the guide ring 211.

[0044] In this embodiment, the diameter of the receiving part 233 is smaller than the diameter of the guide part 232, so that a step is formed between the two. This step can limit the movement distance of the guide ring 211.

[0045] As shown in Figure 3 some embodiments, the limiting sleeve 23 is provided with a clearance hole 234; the inner end of the connecting shaft 21 is threadedly connected with the piston 11, and the outer end extends out of the limiting sleeve 23 through the clearance hole 234 and is connected with the handle 34.

[0046] As shown in Figure 4 some embodiments, the diaphragm 12 is provided with a flange 121 on the side facing the inner end of the piston 11; the existence of the flange 121 makes the sealing surface form a right angle, so that the sealing effect is better; at the same time, the existence of the flange 121 can also prevent the diaphragm 12 from being pulled and displaced.

[0047] As shown in Figure 3 at least one embodiment also provides a linkage assembly for a valve core, which comprises a connecting shaft 21, a return spring 22 and a limiting sleeve 23; wherein the limiting sleeve 23 is internally provided with a guide portion 232; the sidewall of the connecting shaft 21 is provided with a guide ring 211; the guide ring 211 is located in the guide portion 232.

[0048] As shown in Figure 3 some embodiments, the limiting sleeve 23 is internally further provided with a containing portion 233; the return spring 22 is sleeved on the connecting shaft 21, one end of the return spring 22 extends into the containing portion 233 and abuts against it, and the other end abuts against the guide ring 211.

[0049] As shown in Figure 5 at least one embodiment also provides a spraying device, which comprises a spraying device body 35, a flow channel 31 and a mounting hole 32 communicating with the flow channel 31 internally provided in the spraying device body 35, and a valve core for a spraying device; wherein the valve core 10 is arranged in the mounting hole 32 and extends into the flow channel 31 to open and close the flow channel 31.

[0050] For the specific structure and implementation process of the valve core for a spraying device, please refer to the relevant discussion in the above embodiments, which will not be repeated here.

[0051] In some embodiments, a hook 36 is arranged above the spraying device body 35.

[0052] In some embodiments, the spraying device body 35 is hinged with the connecting shaft 21 of the valve core 10 through the handle 34.

[0053] In some embodiments, a nozzle 37 is threadedly connected with the outlet end of the flow channel 31.

[0054] In some embodiments, the materials of the spraying device body 35 and the nozzle 37 can be but are not limited to PFA, PVDF, PP and PTFE.

[0055] In summary, during the opening and closing of the flow channel 31, only the piston 11 moves in the valve core, valve core linkage assembly, and on / off diaphragm 1 of this injection device. The diaphragm 12 does not move and is always pressed against the mounting platform 33. This avoids problems such as displacement or wear of the diaphragm 12's sealing point due to the opening and closing of the flow channel 31, which could lead to sealing failure.

[0056] In this document, when it is said that the first component is located on the second component, this can mean that the first component can be directly formed on the second component, or that the third component can be inserted between the first component and the second component.

[0057] In this document, when an element or layer is referred to as “located,” “joined to,” “connected to,” “attached to,” or “coupled to” another element or layer, it may be directly located, joined, connected, attached to, or coupled to the other element or layer, or there may be intermediate elements or layers present. Conversely, when an element is referred to as “directly on another element or layer,” “directly joined to,” “directly connected to,” “directly attached to,” or “directly coupled to” another element or layer, there may be no intermediate elements or layers present. Other terms used to describe relationships between elements should be interpreted in a similar manner (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.). As used herein, the term “and / or” includes any and all combinations of one or more of the related listed items.

[0058] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0059] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.

[0060] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” and the like generally mean the particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of the present disclosure. Thus, appearances of such phrases in various places throughout this specification do not necessarily all refer to the same embodiment. As used herein, the terms “example,” “exemplary,” and the like are used as example, instance, or illustration. Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or advantageous over other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” and the like are intended to present concepts in a concrete manner.

[0061] In the description of the embodiments of the present application, unless specifically defined and limited, the terms “mounting”, “connection”, “connecting” should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, and can be internal communication of two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0062] In the description of the present application, it should be explained that the terms “center”, “upper”, “lower”, “left”, “right”, “vertical”, “horizontal”, “inner”, “outer” and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, terms such as “first”, “second” and other numerical terms are used herein without implying a sequence or order unless the context clearly indicates otherwise. Therefore, the first element, component, region, layer or section discussed above can be referred to as the second element, component, region, layer or section without departing from the teachings of the example embodiments.

[0063] Spatially relative terms, such as "inner," "outer," "beneath," "below," "lower," "above," "upper," and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. Spatially relative terms can be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the example term "below" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0064] In the above discussion, unless otherwise stated, the terms "about," "approximately," "substantially" and the like mean a variation of + / - 10% of the value stated.

[0065] With the above ideal embodiments according to the present application as the inspiration, through the above description, relevant personnel can certainly make various changes and modifications without deviating from the technical thought of the present application. The technical scope of the present application is not limited to the content in the specification, and must be determined according to the scope of claims.

Claims

1. A valve core for a jetting device, the jetting device (3) being provided with a flow passage (31) and a mounting hole (32) communicating with the flow passage (31), the valve core (10) being adapted to be disposed in the mounting hole (32) and to project into the flow passage (31), characterized in that, The valve core (10) comprises: an on-off diaphragm (1), a piston (11) of the on-off diaphragm (1) is adapted to extend into a flow channel (31) through a mounting hole (32), a diaphragm (12) of the on-off diaphragm (1) is adapted to seal the flow channel (31) against a hanging table (33) of the mounting hole (32); a linkage assembly (2) arranged in the mounting hole (32) and connected with the piston (11) at an inner end, adapted to push the piston (11) to cut off the flow channel (31); wherein an outer end of the linkage assembly (2) is adapted to connect a handle (34) of a spraying device (3); when the spraying device is used, the linkage assembly (2) drives the piston (11) to move reversely to open the flow channel (31) by pressing the handle (34).

2. The valve core for the spraying device according to claim 1, wherein the linkage assembly (2) comprises a connecting shaft (21) and a return spring (22); wherein an inner end of the connecting shaft (21) is connected with the piston (11), and an outer end of the connecting shaft (21) is connected with the handle (34); the return spring (22) is sleeved on the connecting shaft (21) and adapted to push the connecting shaft (21) to drive the piston (11) to cut off the flow channel (31); when the spraying device is used, the connecting shaft (21) drives the piston (11) to move reversely to open the flow channel (31) by pressing the handle (34).

3. The valve core for the spraying device according to claim 2, wherein the linkage assembly (2) further comprises a limiting sleeve (23); wherein an outer wall of the limiting sleeve (23) is provided with an outer thread (231) adapted to be connected through cooperation of the outer thread (231) with an inner thread of the mounting hole (32), and the limiting sleeve (23) is adapted to seal the flow channel (31) by abutting against the diaphragm (12) through an inner end face after being connected.

4. The valve core for the spraying device according to claim 3, wherein a guide portion (232) is formed in the limiting sleeve (23), and a guide ring (211) is provided on a side wall of the connecting shaft (21); wherein the guide ring (211) is located in the guide portion (232).

5. The valve core for the spraying device according to claim 1, wherein the diaphragm (12) is provided with a turned edge (121) on a side of an inner end of the piston (11).

6. The valve core for the spraying device according to claim 4, wherein a receiving portion (233) is further formed in the limiting sleeve (23); one end of the return spring (22) extends into the receiving portion (233) and abuts against the receiving portion (233), and the other end abuts against the guide ring (211).

7. The valve core for the spraying device according to claim 3, wherein the limiting sleeve (23) is provided with an avoiding hole (234); the inner end of the connecting shaft (21) is threadedly connected with the piston (11), and the outer end extends out of the limiting sleeve (23) through the avoiding hole (234) and is connected with the handle (34).

8. A linkage assembly for a valve core, characterized by, comprise: the connecting shaft (21), the return spring (22) and the limiting sleeve (23); wherein the limiting sleeve (23) is provided with the guide portion (232); the guide ring (211) is located in the guide portion (232). A side wall of the connecting shaft (21) is provided with a guide ring (211); The guide ring (211) is located in a guide portion (232). 9.The linkage assembly for a valve core according to claim 8, characterized in that, A receiving portion (233) is further formed in the limiting sleeve (23); The reset spring (22) is sleeved on the connecting shaft (21), one end of the reset spring (22) extends into the receiving portion (233) and abuts against the receiving portion (233), and the other end abuts against the guide ring (211).

10. A spraying device, characterized in that Comprising: A spraying device body (35) having a flow channel (31) and a mounting hole (32) in communication with the flow channel (31) formed therein; The valve core according to any one of claims 1-7; wherein The valve core (10) is arranged in the mounting hole (32) and extends into the flow channel (31) to open and close the flow channel (31).

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