injection valve

Abstract

The application discloses a spray valve, which comprises a valve body, a spray head, a striker and a driving mechanism; the valve body is internally provided with a first stop; the spray head is detachably mounted on the valve body and is provided with a spray opening; the striker is slidably arranged in the valve body and the spray head; the driving mechanism is arranged in the valve body and comprises a driving piece, a lever and a reset piece; the lever is rotationally connected to the valve body; the lever abuts against the striker; the driving piece abuts against the lever; the two ends of the reset piece respectively abut against the striker and the inner wall of the valve body; the first stop is located on the side of the lever close to the spray head; and after the striker is removed, the first stop supports the lever. According to the spray valve, after the striker is removed, the lever in the valve body will not collapse and disassemble, so that the service life of the whole spray valve is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of spraying devices, in particular to a spraying valve. BACKGROUND

[0002] In the related art, a common spraying valve includes a valve body, a nozzle arranged at a mounting port of the valve body, and a driving member, a lever, and a striker arranged in the valve body. In use, the driving member drives the lever to move the striker, thereby spraying liquid in the nozzle. This results in the part of the striker abutting the inner wall of the nozzle being easily damaged after long-term use, and the striker also needs to be cleaned regularly. Therefore, the nozzle and the striker need to be detached from the valve body for replacement or cleaning. Since the lever is simply supported at a fulcrum in the valve body, when the striker is removed, the end of the lever originally abutting the striker may collapse and be scattered, thereby causing the lever to be unable to return to the original position, and further causing the spraying valve to be scrapped. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a spraying valve, which can prevent the lever inside the valve body from collapsing and being scattered after the striker is removed, thereby improving the service life of the spraying valve as a whole.

[0004] The spraying valve according to the embodiments of the present application comprises a valve body, a nozzle, a striker, and a driving mechanism. The valve body is internally provided with a first stop portion. The nozzle is detachably mounted on the valve body and is provided with a nozzle opening. The striker is slidably arranged in the valve body and the nozzle. The driving mechanism is arranged in the valve body and comprises a driving member, a lever, and a return member. The lever is rotationally connected to the valve body, and the lever abuts the striker. The driving member abuts the lever. The two ends of the return member abut the striker and the inner wall of the valve body, respectively. The first stop portion is located on the side of the lever close to the nozzle. After the striker is removed, the first stop portion supports the lever. When the end of the striker abuts the inner wall of the nozzle, a gap exists between the lever and the first stop portion.

[0005] The injection valve according to the embodiment of the present application has at least the following beneficial effects: the injection valve comprises a valve body, a nozzle, a striker and a driving mechanism, the striker is slidably arranged in the valve body and the nozzle, the driving mechanism is used to drive the lever to rotate to drive the striker to approach or move away from the nozzle, and the reset mechanism is used to drive the striker and the lever to reset together, so that the liquid can be intermittently injected from the nozzle, wherein the nozzle is detachably connected to the valve body, the first stopper is arranged on the side of the lever close to the nozzle, so that when the nozzle and the striker are removed, the lever can be supported by the first stopper and will not collapse and disintegrate, thereby facilitating replacement or cleaning of the striker, and during normal use of the injection, there is always a gap between the lever and the first stopper, that is, there is no interference phenomenon, so that the injection valve can ensure that the lever in the valve body can be supported and kept relatively regular and will not collapse and disintegrate after the striker is removed, thereby improving the service life of the injection valve as a whole.

[0006] According to some embodiments of the present application, the first end of the lever abuts against the striker, the first end of the lever is provided with a second stopper, and the first stopper is located on the side of the second stopper close to the nozzle, so that after the striker is removed, the first stopper supports the second stopper.

[0007] According to some embodiments of the present application, the valve body is further provided with a reinforcing portion, and the reinforcing portion is arranged on the side of the first stopper close to the nozzle.

[0008] According to some embodiments of the present application, the striker comprises a flange portion, the flange portion abuts against the lever, and the first stopper and the reinforcing portion form a gap for avoiding the flange portion of the striker.

[0009] According to some embodiments of the present application, the valve body is provided with a glue inlet, the nozzle is provided with a glue inlet communicating with the nozzle, and a positioning structure is arranged between the nozzle and the valve body.

[0010] According to some embodiments of the present application, the positioning structure comprises a first positioning hole, a second positioning hole and a positioning pin, the first positioning hole is arranged on the side wall of the valve body, the second positioning hole is arranged on the outer side of the nozzle, and the positioning pin is simultaneously accommodated in the first positioning hole and the second positioning hole.

[0011] According to some embodiments of the present application, a locking cap is further included, the locking cap is pressed against the nozzle, and the locking cap is threadedly connected with the valve body.

[0012] According to some embodiments of the present application, a rubber ring is further included, the rubber ring is closed at the end of the nozzle away from the nozzle, the striker is arranged in the rubber ring, and the striker is in interference fit with the rubber ring.

[0013] According to some embodiments of the present application, the spray head assembly further comprises a ferrule, the ferrule being sleeved on the rubber ring.

[0014] According to some embodiments of the present application, the spray head assembly further comprises a mounting member, the mounting member being detachably arranged in the valve body, two ends of the rubber ring being pressed against the mounting member and the spray head respectively, the striker being slidably arranged in the mounting member, two ends of the reset member being abutted against the striker and the mounting member respectively.

[0015] Additional aspects and advantages of the present application will be made apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0016] The present application will be further described with reference to the drawings and embodiments, wherein:

[0017] Figure 1 Structure diagram of a spray valve according to one embodiment of the present application;

[0018] Figure 2 Side view of the spray valve in Figure 1 ;

[0019] Figure 3 Sectional view A-A of Figure 2 ;

[0020] Figure 4 Enlarged view of a part at A in Figure 3 ;

[0021] Reference signs:

[0022] Valve body 100; first stop portion 110; mounting port 120; first positioning hole 121; reinforcing portion 130; notch 140; rubber inlet port 150; spray head assembly 200; spray head 210; spray port 211; rubber inlet port 212; second positioning hole 213; positioning pin 214; locking cover 220; rubber ring 230; ferrule 240; mounting member 250; striker 300; flange portion 310; rod portion 320; driving mechanism 400; driving member 410; lever 420; second stop portion 421; reset member 430. DETAILED DESCRIPTION

[0023] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0024] In the description of the present application, it needs to be understood that the orientation description, such as the orientation or position relationship indicated by the upper, lower, front, rear, left, right and the like, is based on the orientation or position relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0025] In the description of the present application, if the meaning of several is more than one, the meaning of multiple is more than two, greater than, less than, more than and the like are understood as not including the number, above, below, within and the like are understood as including the number. If it is described as first, second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of indicated technical features.

[0026] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting and the like should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0027] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0028] The following refers to Figures 1 to 4 The injection valve of the embodiment of the present application is described.

[0029] As Figures 1 to 4The injection valve according to the embodiment of the application comprises a valve body 100, a nozzle 210, a striker 300 and a driving mechanism; the valve body 100 is internally provided with a first stop 110; the nozzle 210 is detachably mounted on the valve body 100 and is provided with a nozzle opening 211; the striker 300 is slidably arranged in the valve body 100 and the nozzle 210; the driving mechanism 400 is arranged in the valve body 100 and comprises a driving member 410, a lever 420 and a reset member 430; the lever 420 is rotationally connected to the valve body 100; the lever 420 abuts against the striker 300; the driving member 410 abuts against the lever 420; the two ends of the reset member 430 abut against the inner wall of the valve body 100 and the striker 300 respectively; the first stop 110 is located on the side of the lever 420 close to the nozzle 210; when the striker 300 is removed, the first stop 110 supports the lever 420; when the end of the striker 300 abuts against the inner wall of the nozzle 210, there is a gap between the lever 420 and the first stop 110.

[0030] The distance between the lever (420) and the first stop (110) is h1, and the stroke of the striker (300) during the working process is h2, and h1 and h2 satisfy h1≥h2.

[0031] It can be understood that the injection valve comprises the valve body 100, the nozzle 210, the striker 300 and the driving mechanism 400; the striker 300 is slidably arranged in the valve body 100 and the nozzle 210; the driving member 410 abuts against the lever and is used to drive the lever 420 to rotate to drive the striker 300 to approach or move away from the nozzle opening 211 of the nozzle 210; and the reset member 430 is used to drive the striker 300 and the lever 420 to reset together, so that the liquid can be intermittently injected from the nozzle opening 211; wherein the nozzle 210 is detachably connected to the valve body 100; the valve body 100 is internally provided with the first stop 110; the first stop 110 can be arranged on the side of the lever 420 close to the nozzle 210; in this way, when the nozzle 210 and the striker 300 are removed, the lever 420 can be supported by the first stop 110 and will not collapse and disintegrate, so as to facilitate replacement or cleaning of the striker 300; and in the process of normal use of the injection, there is always a gap between the lever 420 and the first stop 110, that is, there is no interference phenomenon; therefore, the injection valve of the application can ensure that the lever 420 in the valve body 100 can be supported and kept relatively regular and will not collapse and disintegrate after the striker 300 is removed, so as to improve the service life of the injection valve as a whole.

[0032] Specifically, in the embodiment, the driving member 410 is a piezoelectric ceramic, and the piezoelectric ceramic is driven to rotate the lever 420 through the inverse piezoelectric effect after being electrified, thereby driving the striker 300 to move. In addition to the form of the driving member 410 being a piezoelectric ceramic, in some other embodiments, the driving member 410 can also be in the form of a motor, a pneumatic cylinder, etc. Specifically, the spray head 210 is detachably arranged at the mounting port 120 of the valve body 100.

[0033] It can be understood that the first end of the lever 420 abuts against the striker 300, and the first end of the lever 420 is provided with a second stop portion 421, and the first stop portion 110 is located on the side of the second stop portion 421 close to the spray head 210, and after the striker 300 is removed, the first stop portion 110 supports the second stop portion 421. For example, as shown in Figure 4 It can be understood that the first end of the lever 420 abuts against the striker 300, and the first end of the lever 420 is provided with a second stop portion 421, and the first stop portion 110 is located on the side of the second stop portion 421 close to the spray head 210, and after the striker 300 is removed, the first stop portion 110 supports the second stop portion 421. For example, as shown in

[0034] Specifically, the second stop portion 421 is formed by extending from the first end of the lever 420 to the side away from the second end. It should be understood that the part of the first end of the lever 420 abutting against the striker 300 is an abutting portion, and in addition to being provided with the second stop portion 421 on the side of the first end away from the second end, the second stop portion 421 can also be provided on the first end along the width direction of the lever 420, at this time, after the striker 300 is removed, the second stop portion 421 can also be made to fall on the first stop portion 110 to form a relatively stable state without collapsing.

[0035] It should be understood that in addition to the first stop portion 110 being arranged in the valve body 100 close to the first end of the lever 420, the first stop portion 110 can also be arranged at other positions of the valve body 100 close to the side of the lever 420 close to the mounting port, for example, the first stop portion 110 can be arranged between the inner wall of the valve body 100 and the lever 420 and between the first end and the fulcrum of the lever 420, which can also achieve the support of the lever 420 to avoid collapse. In short, as long as the first stop portion 110 can support the lever 420 after the striker 300 is removed to prevent the first end of the lever 420 from collapsing.

[0036] It can be understood that the valve body 100 is also provided with a reinforcing portion 130, and the reinforcing portion 130 is arranged on the side of the first stop portion 110 close to the spray head 210. For example, as shown in Figure 4As shown, in the present embodiment, the valve body 100 further comprises a reinforcing portion 130 on the side of the first stop portion 110 close to the nozzle 210, so as to improve the supporting strength of the first stop portion 110.

[0037] It can be understood that the striker 300 comprises a flange portion 310, the flange portion 310 abuts against the lever 420, and the first stop portion 110 and the reinforcing portion 130 are formed with a gap 140 for avoiding the flange portion 310 of the striker 300. For example, as shown in FIG. 2, the flange portion 310 of the striker 300 is provided with a gap 140 for avoiding the first stop portion 110 and the reinforcing portion 130. Figure 4 As shown, in the present embodiment, the striker 300 comprises a flange portion 310, the flange portion 310 abuts against the lever 420, and the first stop portion 110 and the reinforcing portion 130 are formed with a gap 140 for avoiding the flange portion 310 of the striker 300. For example, as shown in FIG. 2, the flange portion 310 of the striker 300 is provided with a gap 140 for avoiding the first stop portion 110 and the reinforcing portion 130.

[0038] Specifically, when the position of the reset member 430 is on the side of the flange portion 310 of the striker 300 away from the lever 420, there are two cases: one is that the position of the piezoelectric ceramic abutting against the lever 420 is between the fulcrum and the first end of the lever 420 along the length direction of the lever 420, at this time, the piezoelectric ceramic and the striker 300 are respectively arranged on the two sides of the lever 420, and the piezoelectric ceramic is elongated after being electrified to push the lever 420 to rotate, thereby driving the striker 300 to approach the nozzle 211, so that the reset member 430 is arranged on the end of the flange portion 310 of the striker 300 close to the mounting port 120, and it is necessary to provide a restoring force for pushing the striker 300 away from the nozzle 211, that is, the reset member 430 is an elastic member similar to a compression spring which can push the striker 300; the other is that the position of the piezoelectric ceramic abutting against the lever 420 and the reset member 430 are respectively arranged on the two ends of the fulcrum of the lever 420 along the length direction of the lever 420, at this time, since the reset member 430 is also an elastic member similar to a compression spring which can push the striker 300, and the piezoelectric ceramic is arranged on the same side of the lever 420 as the reset member 430.

[0039] It should be understood that, in addition to the above-mentioned embodiments in which the reset member 430 is arranged on the side of the flange portion 310 of the striker 300 away from the lever 420, in some other embodiments, the reset member 430 can also be arranged on the side of the lever 420 away from the striker 300.

[0040] It should be understood that, in the present embodiment, only one reset member 430 is arranged on the side of the flange portion 310 of the striker 300 away from the lever 420, and the form of originally arranging two reset members 430 respectively connected to the lever 420 and the striker 300 is changed, so as to improve the synchronization of the movement of the striker 300 and the lever 420, and avoid the influence of the two reset members 430 on the movement of the lever 420 and the striker 300 out of synchronization on the injection of liquid by the injection valve.

[0041] It can be understood that the valve body 100 is provided with the glue inlet 150, the spray head 210 is provided with the glue inlet 212 communicating with the spray port 211, and the positioning structure is arranged between the spray head 210 and the valve body 100. For example, as shown in the embodiment, the valve body 100 is provided with the glue inlet 150, the spray head 210 is provided with the glue inlet 212 communicating with the spray port 211, and the glue inlet 150 is used for communicating the container containing the glue solution and the spray head 210, so that the glue solution can be smoothly guided from the container to the spray head 210 when the glue inlet 150 and the glue inlet 212 are aligned, and the positioning structure is arranged between the spray head 210 and the valve body 100, so that the glue inlet 212 and the glue inlet 150 can be aligned to smoothly guide the glue solution. Figure 4 It can be understood that the valve body 100 is provided with the glue inlet 150, the spray head 210 is provided with the glue inlet 212 communicating with the spray port 211, and the positioning structure is arranged between the spray head 210 and the valve body 100. For example, as shown in the embodiment, the valve body 100 is provided with the glue inlet 150, the spray head 210 is provided with the glue inlet 212 communicating with the spray port 211, and the glue inlet 150 is used for communicating the container containing the glue solution and the spray head 210, so that the glue solution can be smoothly guided from the container to the spray head 210 when the glue inlet 150 and the glue inlet 212 are aligned, and the positioning structure is arranged between the spray head 210 and the valve body 100, so that the glue inlet 212 and the glue inlet 150 can be aligned to smoothly guide the glue solution.

[0042] It can be understood that the positioning structure includes the first positioning hole 121 arranged on the side wall of the valve body 100, the second positioning hole 213 arranged on the outer side surface of the spray head 210, and the positioning pin 214 accommodated in the first positioning hole 121 and the second positioning hole 213 at the same time. For example, as shown in the embodiment, the positioning structure includes the first positioning hole 121 arranged on the inner wall of the mounting port 120 of the valve body 100, the second positioning hole 213 arranged on the outer side surface of the spray head 210, and the positioning pin 214, and the positioning pin 214 can be limited in the first positioning hole 121 and the second positioning hole 213 at the same time, so that when the first positioning hole 121 and the second positioning hole 213 are aligned, the glue inlet 212 and the glue inlet 150 are also aligned, thereby realizing the positioning of the spray head 210. Figure 4 It can be understood that the positioning structure includes the first positioning hole 121 arranged on the side wall of the valve body 100, the second positioning hole 213 arranged on the outer side surface of the spray head 210, and the positioning pin 214 accommodated in the first positioning hole 121 and the second positioning hole 213 at the same time. For example, as shown in the embodiment, the positioning structure includes the first positioning hole 121 arranged on the inner wall of the mounting port 120 of the valve body 100, the second positioning hole 213 arranged on the outer side surface of the spray head 210, and the positioning pin 214, and the positioning pin 214 can be limited in the first positioning hole 121 and the second positioning hole 213 at the same time, so that when the first positioning hole 121 and the second positioning hole 213 are aligned, the glue inlet 212 and the glue inlet 150 are also aligned, thereby realizing the positioning of the spray head 210.

[0043] It can be understood that the positioning structure includes the first positioning hole 121 arranged on the side wall of the valve body 100, the second positioning hole 213 arranged on the outer side surface of the spray head 210, and the positioning pin 214 accommodated in the first positioning hole 121 and the second positioning hole 213 at the same time. For example, as shown in the embodiment, the positioning structure includes the first positioning hole 121 arranged on the inner wall of the mounting port 120 of the valve body 100, the second positioning hole 213 arranged on the outer side surface of the spray head 210, and the positioning pin 214, and the positioning pin 214 can be limited in the first positioning hole 121 and the second positioning hole 213 at the same time, so that when the first positioning hole 121 and the second positioning hole 213 are aligned, the glue inlet 212 and the glue inlet 150 are also aligned, thereby realizing the positioning of the spray head 210.

[0044] It can be understood that the locking cover 220 is pressed against the spray head 210 and is threadedly connected with the valve body 100. For example, as shown in the embodiment, the spray head assembly 200 includes the locking cover 220 in addition to the spray head, and the locking cover 220 is threadedly connected with the valve body 100 in the form of pressing the spray head 210 against the valve body 100 and being detachable, thereby realizing the removal of the spray head 210 and the striker 300. Figure 4 It can be understood that the locking cover 220 is pressed against the spray head 210 and is threadedly connected with the valve body 100. For example, as shown in the embodiment, the spray head assembly 200 includes the locking cover 220 in addition to the spray head, and the locking cover 220 is threadedly connected with the valve body 100 in the form of pressing the spray head 210 against the valve body 100 and being detachable, thereby realizing the removal of the spray head 210 and the striker 300.

[0045] It can be understood that the locking cover 220 is provided with the avoiding hole corresponding to the spray port 211 to avoid the solution sprayed by the spray port 211.

[0046] Understandably, it also includes a rubber ring 230, which is closed at the end of the nozzle 210 away from the nozzle 211. The rubber ring 230 has a through hole, and the firing pin 300 passes through the rubber ring 230 and is interference-fitted with the rubber ring 230. For example, as Figure 4 As shown, in this embodiment, the nozzle assembly 200 includes a rubber ring 230, which is closed at the end of the nozzle 210 away from the nozzle 211 and is interference-fitted with the impact pin 300. This prevents the solution from being carried into the valve body 100 on the side of the rubber ring 230 away from the nozzle 210 by the impact pin 300, and also provides a barrier seal for the solution in the nozzle 210, thereby preventing the solution from contaminating the inside of the valve body 100 on the side of the rubber ring 230 away from the nozzle 210.

[0047] Understandably, it also includes a retaining ring 240, which is fitted onto the rubber ring 230. For example, as Figure 4 As shown, in this embodiment, the nozzle assembly 200 also includes a collar 240 sleeved on the rubber ring 230. The rubber ring 230 achieves an interference fit with the impact pin 300 through the collar 240, and the collar 240 can further improve the sealing performance of the rubber ring 230.

[0048] Specifically, the bottom of the rubber ring 230 is provided with an annular groove, and the collar 240 is embedded in the annular groove, tightening the rubber ring 230 part inside the annular groove, thereby achieving an interference fit between the rubber ring 230 and the firing pin 300.

[0049] Understandably, it also includes a mounting component 250, which is detachably disposed within the valve body 100. The two ends of the rubber ring 230 are respectively pressed between the mounting component 250 and the nozzle 210. The striking pin 300 is slidably inserted through the mounting component 250, and the two ends of the reset component 430 abut against the striking pin 300 and the mounting component 250, respectively. For example, as... ​ As shown, in this embodiment, a mounting member 250 is provided inside the valve body 100, a rubber ring 230 is positioned between the mounting member 250 and the nozzle 210, and a striker 300 is slidably disposed within the mounting member 250. The mounting member 250 guides the striker 300, and both ends of the reset member 430 abut against the mounting member 250 and the flange 310 of the striker 300. Specifically, there is a clearance fit between the mounting member 250 and the striker 300.

[0050] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application. Furthermore, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.

Claims

1. An injection valve characterized by, The utility model relates to a valve body (100) is provided with first stop (110) inside, nozzle (210) is detachably installed in valve body (100), and is provided with spout (211), striker (300) is slidably arranged in valve body (100) and nozzle (210), drive mechanism (400) is arranged in valve body (100), and includes drive piece (410), lever (420) and reset piece (430), lever (420) is rotatably connected in valve body (100), lever (420) and striker (300) abut, and the both ends of lever are first end and second end respectively, and the first end of lever is abutted with striker, drive piece (410) and lever (420) abut, and the both ends of reset piece (430) are respectively abutted with striker (300) and the inner wall of valve body (100), and first stop (110) is located in the side of lever (420) close to nozzle (210), when removing striker (300), first stop (110) supports lever (420), when the end of striker (300) abuts the inner wall of nozzle (210), there is gap between lever (420) and first stop (110), wherein, the first end of lever (420) is provided with second stop (421), and first stop (110) is located in the side of second stop (421) close to nozzle (210), after removing striker (300), first stop (110) supports second stop (421), or, first stop is arranged in the inner wall of valve body, and is located between the first end of lever and the fulcrum of lever, after removing striker, first stop directly supports the stem of lever. The valve body (100) is further provided with a reinforcing portion (130), and the reinforcing portion (130) is arranged on the side of the first stop portion (110) close to the nozzle (210). The striker (300) includes a flange portion (310), the flange portion (310) abuts against the lever (420), and the first stop portion (110) and the reinforcing portion (130) form a gap (140) for avoiding the flange portion (310) of the striker (300). The valve body (100) is provided with an adhesive inlet (150), the nozzle (210) is provided with an adhesive inlet (212) communicating with the spout (211), and a positioning structure is arranged between the nozzle (210) and the valve body (100). The positioning structure includes a first positioning hole (121), a second positioning hole (213) and a positioning pin (214), the first positioning hole (121) is arranged on the side wall of the valve body (100), the second positioning hole (213) is arranged on the outer side of the nozzle (210), and the positioning pin (214) is accommodated in the first positioning hole (121) and the second positioning hole (213) at the same time.

2. The injection valve of claim 1, wherein ​ 3. The injection valve of claim 2, wherein ​ 4. The injection valve of claim 1, wherein ​ 5. The injection valve of claim 4, wherein ​ 6. The injection valve of claim 5, wherein Further comprising a locking cover (220) which is pressed against the spray head (210) and is screwed with the valve body (100).

7. The injection valve of claim 1, wherein Further comprising a rubber ring (230) which is closed at one end of the spray head (210) away from the spray opening (211), and the striker (300) is arranged in the rubber ring (230) and is in interference fit with the rubber ring (230).

8. The injection valve of claim 7, wherein Further comprising a sleeve ring (240) which is sleeved on the rubber ring (230).

9. The injection valve of claim 8, wherein, Further comprising a mounting member (250) which is detachably arranged in the valve body (100), the rubber ring (230) is pressed between the mounting member (250) and the spray head (210), the striker (300) is slidably arranged in the mounting member (250), and the two ends of the reset member (430) are respectively abutted against the striker (300) and the mounting member (250). Further comprising a locking cover (220) which is pressed against the spray head (210) and is screwed with the valve body (100). Further comprising a rubber ring (230) which is closed at one end of the spray head (210) away from the spray opening (211), and the striker (300) is arranged in the rubber ring (230) and is in interference fit with the rubber ring (230). Further comprising a sleeve ring (240) which is sleeved on the rubber ring (230). Further comprising a mounting member (250) which is detachably arranged in the valve body (100), the rubber ring (230) is pressed between the mounting member (250) and the spray head (210), the striker (300) is slidably arranged in the mounting member (250), and the two ends of the reset member (430) are respectively abutted against the striker (300) and the mounting member (250).

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