Retaining structure for a reservoir of a fluid ejector

Abstract

The utility model discloses the storage pot's retreat structure of fluid ejector, including machine body and install in the storage pot of machine body, and the machine body includes the casing and pump, is equipped with the first opening on the storage pot, and the import end of pump inserts the first opening and is connected with the storage pot, the storage pot can be separated with the pump through rotating about the first axis on the pump relative to the pump, be equipped with the locking mechanism for locking pump and the relative rotation of storage pot on the casing, and the locking mechanism includes the lock pin and elastic part, and the lock pin can be linearly moved in the setting direction relative to the casing, be equipped with the perforation on the storage pot, be equipped with the lock slot of corresponding perforation on the pump, and the lock pin passes through the perforation and inserts in the lock slot, the lock pin can linearly move outward and separate from the lock slot and the perforation under the action of external force, the elastic part is used for driving the lock pin to move reset, the structure of locking by the lock pin is not easy to unlock because of the false touch, makes the locking more stable, avoids unlocking and the storage pot to exit from the pump and separate from the pump, plays good retreat effect.

Description

Technical Field

[0001] This utility model relates to a fluid ejector, and more particularly to a backstop structure for the storage tank of a fluid ejector. Background Technology

[0002] A fluid jetting machine is a machine that sprays fluid through a nozzle onto a surface. It is widely used for spraying paint, varnish, lacquer, finishes, and other coatings or other fluids. It works by pressurizing the fluid with a pump and driving it through a conduit (such as a hose) to the sprayer (such as a spray gun). The spraying of the fluid is controlled by a control switch on the spray gun.

[0003] For example, the fluid injector disclosed in patent CN119110753A includes a handheld fluid spray gun, a pump module, and a fluid reservoir. The pump module includes an electric motor, a pump, and a hose. The pump is driven by the electric motor, and the hose delivers the liquid output by the pump to the spray gun. The fluid reservoir includes a tubing for containing fluid and a basin fixed to the pump body. A mounting slot is formed on the side wall of the basin, extending axially and circumferentially relative to the fluid reservoir. A protrusion is provided on the outside of the tubing. A vertical opening is formed on the side wall of the basin for the protrusion, which is placed in the mounting slot, to enter or exit the mounting slot. When the tubing is inserted into the basin, the protrusion enters the mounting slot from the vertical opening and moves relative to the basin. The can is rotated so that the protrusion engages with the mounting slot to restrict the movement of the can from the basin. The basin is equipped with a can lock, which is configured to engage with the protrusion to secure the can to the basin. The can lock includes a spring-loaded lever, under which the protrusion of the can passes to force the lever arm outward to allow the protrusion to pass under the lever arm. The protrusion passes under the retaining hook of the lever arm, and then the locking spring causes the lever arm to snap back into place. The retaining hook overlaps circumferentially with the protrusion relative to the reservoir axis RA, so that the lever arm prevents the can from rotating relative to the basin when the can is installed. The user can press down the lever arm to pry open the protrusion and release the can for removal from the basin.

[0004] The fluid ejector disclosed in the aforementioned patent uses a spring-brake lever to lock the rotation of the tubing. When the lever arm is pressed down, the locking part of the lever lifts up to release the rotation lock on the tubing. This locking method is prone to the problem of users accidentally touching the lever to unlock it during use, making the rotation lock of the tubing relatively unstable. Utility Model Content

[0005] Based on the aforementioned problem that the rotational locking of the tubing is achieved by levers with spring braking, which are easily triggered by pressing, making the rotational locking of the tubing unstable, this utility model provides a backstop structure for the storage tank of a fluid ejector.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a non-retractable structure for the storage tank of a fluid ejector, including a body and a storage tank mounted on the body for containing fluid. The body includes a housing and a pump mounted inside the housing for controlling fluid output. The storage tank has a first opening, and the inlet end of the pump is inserted into the first opening and connected to the storage tank. The storage tank can be separated from the pump after rotating relative to the pump around a first axis on the pump. The housing is provided with a locking mechanism for locking the relative rotation of the pump and the storage tank. The locking mechanism includes a locking pin and an elastic element. The locking pin can move linearly relative to the housing in a set direction. The storage tank has a through hole, and the pump has a corresponding locking groove. The locking pin passes through the through hole and is inserted into the locking groove. The locking pin can move linearly outward under the action of external force and disengage from the locking groove and the through hole. The elastic element is used to drive the locking pin to move and reset.

[0007] A further preferred embodiment of this invention is that one end of the locking pin is connected to a knob, and the movement of the locking pin is driven by the rotation of the knob.

[0008] A further preferred technical solution of this utility model is as follows: the housing is provided with a high position and a low position, there is a height difference between the high position and the low position, the high position and the low position are connected by a guide surface, the knob is provided with a mating part, the mating part abuts against the high position or the low position under the action of the elastic element, and the rotation of the knob controls the sliding switching of the mating part between the high position and the low position, so that the locking pin moves linearly relative to the housing in a set direction.

[0009] A further preferred technical solution of this utility model is: a groove is provided on the high position, and when the mating part moves to the high position and the locking pin disengages from the locking groove and the through hole, the mating part enters the groove to restrict the relative rotation of the knob and the housing.

[0010] A further preferred embodiment of this utility model is as follows: the pump is installed inside the housing, the housing has a second opening for the storage container to be inserted and connected to the pump, the housing has a through hole for the locking pin to pass through, the inner wall of the housing has a receiving groove connected to the inner end of the through hole, the elastic element is a return spring, the return spring is received in the receiving groove and sleeved on the locking pin, one end of the return spring abuts against the inner wall of the receiving groove, the other end of the return spring abuts against the retaining ring snapped on the locking pin, the return spring has a spring force to push the locking pin to move into the housing, and the knob is connected to the end of the locking pin exposed outside the housing.

[0011] A further preferred embodiment of this utility model is as follows: an annular groove is provided on the outer wall of the pump's open end, and an annular sealing ring is engaged in the annular groove. When the pump's open end is inserted into the first opening, the annular sealing ring seals the gap between the pump and the inner wall of the first opening.

[0012] A further preferred technical solution of this utility model is as follows: the storage pot includes a pot body and a pot lid. The pot body includes a pot body, a pot shoulder, and a pot neck. The pot body is cylindrical. The pot shoulder is connected between the pot body and the pot neck. The diameter of the pot shoulder gradually decreases from the end connected to the pot body to the end connected to the pot neck. A first opening is opened on the pot neck. A third opening is provided at the end of the pot body away from the pot neck. The pot lid is detachably connected to the third opening. The housing is provided with an extended annular support portion. A second opening is located inside the support portion. When the end of the pot body with the pot neck is inserted into the second opening and connected to the pump, the pot shoulder abuts against the ring support portion.

[0013] A further preferred embodiment of this invention is as follows: the storage vessel is provided with a first groove and a second groove. The first groove extends circumferentially along the storage vessel, and the second groove is a straight groove. One end of the second groove is connected to one end of the first groove, and the other end of the second groove extends and penetrates the edge of the first opening. The pump's opening end is provided with a protrusion. When the pump's opening end is inserted into the first opening and the protrusion enters the first groove from the second groove, the storage vessel can rotate around a first axis on the pump to switch between a locked position and a released position.

[0014] When the storage vessel rotates to the locking position, the protrusion aligns with the inner wall of the first groove, and the storage vessel is fixed relative to the pump along the extension direction of the first axis.

[0015] When the reservoir is rotated to the release position, the protrusion is opposite to the second groove, and the reservoir can move along the extension direction of the first axis to separate from the pump.

[0016] A further preferred embodiment of this utility model is as follows: a recess is provided on the inner wall of the first groove. When the storage vessel rotates to the locking position, the protrusion moves and falls into the recess to restrict the pump and the storage vessel from rotating relative to each other around the first axis.

[0017] A further preferred embodiment of this utility model is as follows: the side of the storage container is provided with an outwardly protruding part, and the first groove and the second groove are located at the position of the protruding part.

[0018] Compared with the prior art, the advantages of this utility model are that the locking mechanism includes a locking pin and an elastic element. The locking pin can move linearly relative to the housing in a set direction. The storage tank is provided with a through hole, and the pump is provided with a corresponding locking groove. The locking pin passes through the through hole and is inserted into the locking groove. The locking pin can move linearly outward under the action of external force and disengage from the locking groove and the through hole. The elastic element is used to drive the locking pin to move and reset. The structure locked by the locking pin is not easy to be unlocked due to accidental contact, making the locking more stable and preventing the storage tank from falling off the pump and separating from the pump after unlocking, thus achieving a good anti-reverse effect. Attached Figure Description

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present invention. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a cross-sectional schematic diagram of the locking pin of this utility model in the locked state;

[0022] Figure 3 for Figure 2 Enlarged view of a portion at point A;

[0023] Figure 4 This is a cross-sectional view of the locking pin of this utility model in the unlocked state;

[0024] Figure 5 for Figure 4 A magnified view of section B;

[0025] Figure 6 This is a schematic diagram of the organism's structure;

[0026] Figure 7 This is a schematic diagram of the storage vessel.

[0027] Figure 8 for Figure 7 A magnified view of a portion at point C;

[0028] Figure 9 This is a schematic diagram of the external structure of the casing;

[0029] Figure 10 for Figure 9 A magnified view of a portion at point D;

[0030] Figure 11 This is a schematic diagram of the knob.

[0031] In the diagram: 1. Body; 2. Storage container; 3. Knob; 4. Lid; 5. Body; 6. Shoulder; 7. Neck; 8. Annular sealing ring; 9. Annular groove; 10. Pump; 11. Support; 12. Second opening; 13. Third opening; 14. Locking pin; 15. Elastic element; 16. Retaining ring; 17. Perforation; 18. Locking groove; 19. Receiving groove; 20. Through hole; 21. First opening; 22. Housing; 23. First groove; 24. Second groove; 25. Protrusion; 26. Recess; 27. Raised ring; 28. Low position; 29. ​​Guide surface; 30. High position; 31. Groove; 32. Vertical edge; 33. Fitting part; 34. First axis; 35. Container body; 36. Protrusion. Detailed Implementation

[0032] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0033] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

[0034] Figures 1-11 As shown, the anti-reverse structure of the fluid jet injector's storage tank includes a body 1 and a storage tank 2 mounted on the body 1 for containing fluid, such as varnish, paint, coating, etc. The body 1 includes a housing 22 and a pump 10 mounted inside the housing 22 for controlling the fluid output. The storage tank 2 is provided with a first opening 21. The inlet end of the pump 10 is inserted into the first opening 21 and connected to the storage tank 2. The pump 10 is driven by an electric motor, so that the fluid contained in the storage tank 2 enters from the inlet end of the pump 10 and is then output from the outlet end. The fluid output by the pump 10 flows to the spray gun and is then sprayed through the spray gun.

[0035] The storage vessel 2 can be separated from the pump 10 after rotating relative to the pump 10 about a first axis 34 on the pump 10. For example:

[0036] In one embodiment, the inlet end of the pump 10 is inserted into the first opening 21 and threadedly connected to the storage vessel 2. The storage vessel 2 is unscrewed from the pump 10 by rotating it relative to the pump 10.

[0037] Figures 6-8As shown, in another embodiment, the storage vessel 2 is provided with a first groove 23 and a second groove 24. The first groove 23 extends circumferentially along the storage vessel 2, and the second groove 24 is a straight groove. One end of the second groove 24 is connected to one end of the first groove 23, and the other end of the second groove 24 extends and passes through the edge of the first opening 21. The opening end of the pump 10 is provided with a protrusion 36. The second groove 24 is used for the protrusion 36 to enter or move out of the first groove 23. When the opening end of the pump 10 is inserted into the first opening 21 and the protrusion 36 enters the first groove 23 from the second groove 24, the storage vessel 2 can rotate around the first axis 34 on the pump 10 to switch between the engaging position and the releasing position.

[0038] When the storage vessel 2 is rotated to the locking position, the protrusion 36 is opposite to the inner wall of the first groove 23, and the storage vessel 2 is fixed relative to the pump 10 along the extension direction of the first axis 34. At this time, the storage vessel 2 cannot move relative to the pump 10 along the direction of the first axis 34 to disengage, and the storage vessel 2 is connected to the pump 10.

[0039] When the reservoir 2 is rotated to the release position, the protrusion 36 is opposite to the second groove 24, and the reservoir 2 can move along the extension direction of the first axis 34 to separate from the pump 10. During the process of the reservoir 2 moving relative to the pump 10 along the extension direction of the first axis 34, the protrusion 36 is moved out of the second groove 24.

[0040] In addition, a recess 26 is provided on the inner wall of the first groove 23. When the storage vessel 2 is rotated to the locking position, the protrusion 36 moves and falls into the recess 26 to restrict the pump 10 and the storage vessel 2 from rotating relative to each other around the first axis 34.

[0041] The inner wall of the first groove 23 is elastic. When the protrusion 36 moves toward the inner end of the first groove 23 as the storage pot 2 rotates, the protrusion 36 squeezes the inner wall of the first groove 23, causing the inner wall of the first groove 23 to undergo elastic deformation, so that the protrusion 36 can slide into the recess 26 in the first groove 23 to form a snap.

[0042] This structure makes the rotational locking of the storage tank 2 and the pump 10 more stable, preventing the fluid in the storage tank 2 from flowing out between the storage tank 2 and the pump 10 after the storage tank 2 and the pump 10 rotate relative to each other to the release position.

[0043] The storage vessel 2 has an outwardly protruding protrusion 25 on its side. The first groove 23 and the second groove 24 are located at the position of the protrusion 25. By setting the protrusion 25, the storage vessel 2 has sufficient strength at the position where the first groove 23 and the second groove 24 are opened, and the strength is not reduced due to the opening of the first groove 23 and the second groove 24.

[0044] Preferably, the pump 10 has protrusions 36 on both sides of the inlet end, and the storage tank 2 has protrusions 25 on both sides of the inlet end, as well as a first groove 23 and a second groove 24 corresponding to the protrusions 36.

[0045] The connection is made more stable by providing connection structures on both sides of the pump 10 and the storage tank 2.

[0046] Figure 2 , Figure 3 , Figure 6 As shown, an annular groove 9 is provided on the outer wall of the open end of the pump 10. An annular sealing ring 8 is engaged in the annular groove 9. When the open end of the pump 10 is inserted into the first opening 21, the annular sealing ring 8 seals the gap between the pump 10 and the inner wall of the first opening 21 to maintain the sealing of the connection between the pump 10 and the storage tank 2, and to prevent the fluid in the storage tank 2 from flowing out from the gap between the pump 10 and the storage tank 2.

[0047] Figures 2-5 As shown, in order to limit the relative rotation of pump 10 and storage tank 2, a locking mechanism for locking the relative rotation of pump 10 and storage tank 2 is provided on housing 22. The locking mechanism includes a locking pin 14 and an elastic element 15. The locking pin 14 can move linearly relative to housing 22 in a set direction. Storage tank 2 is provided with a through hole 17, and pump 10 is provided with a locking groove 18 corresponding to the through hole 17. The locking pin 14 passes through the through hole 17 and is inserted into the locking groove 18. The locking pin 14 can move linearly outward under the action of external force and disengage from the locking groove 18 and the through hole 17. The elastic element 15 is used to drive the locking pin 14 to move and reset.

[0048] This patented structure, with its locking pin 14, is not easily unlocked due to accidental contact, making the locking more stable and preventing the storage tank 2 from exiting the pump 10 and separating from the pump 10 after unlocking, thus achieving a good anti-reverse effect.

[0049] The moving direction of the locking pin 14 is perpendicular to the extending direction of the first axis 34, and the locking groove 18 is located below the annular sealing ring 8.

[0050] One end of the locking pin 14 is connected to a knob 3, and the movement of the locking pin 14 is driven by the rotation of the knob 3. One end of the locking pin 14 can be fixedly connected to the knob 3, or one end of the locking pin 14 can be connected to the knob 3, and the two can rotate relative to each other.

[0051] Figures 9-11As shown, preferably, the housing 22 is provided with a high position 30 and a low position 28, with a height difference between the high position 30 and the low position 28. The high position 30 and the low position 28 are connected by a guide surface 29. The knob 3 is provided with a mating part 33. The mating part 33 abuts against the high position 30 or the low position 28 under the action of the elastic member 15. Rotating the knob 3 controls the mating part 33 to slide and switch between the high position 30 and the low position 28, so that the locking pin 14 moves linearly relative to the housing 22 in a set direction.

[0052] The method of moving the locking pin 14 to unlock by rotating the knob 3 is more labor-saving. Furthermore, by setting the high position 30 and the low position 28 to cooperate with the mating part 33 to move the locking pin 14, the locking pin 14 can be kept in the unlocked state by pressing against the high position 30, without the need for continuous manual force.

[0053] Preferably, the guide surface 29 is an inclined surface or an arc surface.

[0054] Preferably, the housing 22 is provided with two sets of high positions 30, low positions 28 and guide surfaces 29, and the knob 3 is provided with two sets of mating parts 33 that respectively mate with the two sets of high positions 30, low positions 28 and guide surfaces 29.

[0055] Specifically, a raised ring 27 is provided on the outer wall of the housing 22. Two sets of high positions 30, low positions 28 and guide surfaces 29 are provided on the end face of one end of the raised ring 27. The two sets of high positions 30, low positions 28 and guide surfaces 29 form a ring. One side of the low position 28 is connected to the guide surface 29. A vertical edge 32 is provided between the other side of the low position 28 and the other set of high positions 30. The vertical edge 32 is used for the mating part 33 to abut against the knob 3 to limit its rotation.

[0056] The high position 30 is provided with a groove 31. When the mating part 33 moves to the high position 30 and the locking pin 14 disengages from the locking groove 18 and the through hole 17, the mating part 33 falls into the groove 31 to restrict the relative rotation of the knob 3 and the housing 22, so that the locking pin 14 can be locked in the state of disengaging from the locking groove 18 and the through hole 17.

[0057] Pump 10 is installed inside housing 22. Housing 22 has a second opening 12 for storage tank 2 to be inserted and connected to pump 10. Housing 22 has a through hole 20 for locking pin 14 to pass through. The inner wall of housing 22 has a receiving groove 19 connected to the inner end of the through hole 20. A convex ring 27 is connected to the outer end of the through hole 20. The elastic element 15 is a return spring. The return spring is housed in the receiving groove 19 and sleeved on the locking pin 14. One end of the return spring abuts against the inner wall of the receiving groove 19, and the other end of the return spring abuts against the retaining ring 16 that is engaged with the locking pin 14. The return spring has a spring force to push the locking pin 14 into housing 22. Knob 3 is connected to the end of the locking pin 14 exposed outside housing 22.

[0058] Operating principle: When the storage vessel 2 needs to be installed on the pump 10, the knob 3 is turned counterclockwise, causing the mating part 33 in the low position 28 to slide along the guide surface 29 to the high position 30 and fall into the groove 31 in the high position 30. During this process, the locking pin 14 is driven by the knob 3 to move outward linearly away from the pump 10, so that the end of the locking pin 14 away from the knob 3 forms a gap with the pump 10 for the side wall of the storage vessel 2 to be inserted. Then, the storage vessel 2 is inserted into the inlet end of the pump 10 through the first opening 21, so that the through hole 17 and the locking groove 18 are aligned. Conversely, rotating knob 3 clockwise causes the mating part 33 to first press against the inner wall of groove 31, causing knob 3 and locking pin 14 to move outward in a straight line a certain distance against the spring force of the return spring, allowing mating part 33 to move out of groove 31. Then, mating part 33 slides from high position 30 along guide surface 29 to low position 28. During this process, the return spring acts on retaining ring 16 to push locking pin 14 and knob 3 inward until the end of locking pin 14 passes through through hole 17 and inserts into locking groove 18, locking the relative rotation of storage tank 2 and pump 10. When it is necessary to release the rotational lock of storage tank 2 and pump 10, rotate knob 3 counterclockwise, causing mating part 33 to move from low position 28 to high position 30, causing the end of locking pin 14 to move out of through hole 17 and locking groove 18.

[0059] The storage container 2 includes a container body 35 and a lid 4. The container body 35 includes a body 5, a shoulder 6, and a neck 7. The body 5 is cylindrical. The shoulder 6 connects the body 5 and the neck 7. The diameter of the shoulder 6 gradually decreases from the end connected to the body 5 to the end connected to the neck 7. A first opening 21 is opened on the neck 7. A third opening 13 is provided at the end of the container body 35 away from the neck 7. The lid 4 is detachably connected to the third opening 13. The housing 22 is provided with an extended annular support portion 11. A second opening 12 is located inside the support portion 11. When the end of the container body 35 with the neck 7 is inserted into the second opening 12 and connected to the pump 10, the shoulder 6 abuts against the ring support portion 11. The support portion 11 can position and support the container body 35. When the shoulder 6 abuts against the support portion 11, the through hole 17 and the locking groove 18 are at the same height.

[0060] The lid 4 is threaded to the body 35. The first groove 23, the second groove 24, the protrusion 25, and the perforation 17 are all located on the neck 7.

[0061] The anti-reverse structure of the storage tank of the fluid ejector provided by this utility model has been described above. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand this utility model and its core ideas. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A backstop structure for the reservoir of a fluid ejector, comprising a body and a reservoir mounted on the body for containing fluid, the body including a housing and a pump mounted inside the housing for controlling fluid output, characterized in that, The storage vessel has a first opening, and the inlet end of the pump is inserted into the first opening and connected to the storage vessel. The storage vessel can be separated from the pump after rotating relative to the pump around a first axis on the pump. The housing is provided with a locking mechanism for locking the relative rotation of the pump and the storage vessel. The locking mechanism includes a locking pin and an elastic element. The locking pin can move linearly relative to the housing in a set direction. The storage vessel has a through hole, and the pump has a corresponding locking groove. The locking pin passes through the through hole and is inserted into the locking groove. The locking pin can move linearly outward under the action of external force and disengage from the locking groove and the through hole. The elastic element is used to drive the locking pin to move and reset.

2. The retreat-stop structure of a fluid ejection cartridge's reservoir according to claim 1, wherein, One end of the locking pin is connected to a knob, and the movement of the locking pin is driven by the rotation of the knob.

3. The retreat-stop structure of a fluid ejection cartridge's reservoir according to claim 2, wherein, The housing has a high position and a low position with a height difference between them. The high position and the low position are connected by a guide surface. The knob has a mating part that abuts against the high position or the low position under the action of an elastic element. Rotating the knob controls the sliding switching of the mating part between the high position and the low position, so that the locking pin moves linearly relative to the housing in a set direction.

4. The anti-reverse structure of the reservoir of the fluid ejector according to claim 3, characterized in that, The high position is provided with a groove. When the mating part moves to the high position and the locking pin disengages from the locking groove and the through hole, the mating part enters the groove to restrict the relative rotation of the knob and the housing.

5. The anti-reverse structure of the reservoir of the fluid ejector according to claim 2, characterized in that, The pump is installed inside the housing, which has a second opening for the storage tank to be inserted and connected to the pump. The housing has a through hole for the locking pin to pass through, and an accommodating groove is formed on the inner wall of the housing to connect with the inner end of the through hole. The elastic element is a return spring, which is housed in the accommodating groove and sleeved on the locking pin. One end of the return spring abuts against the inner wall of the accommodating groove, and the other end of the return spring abuts against the retaining ring that is engaged with the locking pin. The return spring has a spring force to push the locking pin into the housing. The knob is connected to the end of the locking pin that is exposed outside the housing.

6. The anti-reverse structure of the reservoir of the fluid ejector according to claim 1, characterized in that, An annular groove is provided on the outer wall of the pump's open end. An annular sealing ring is engaged in the annular groove. When the pump's open end is inserted into the first opening, the annular sealing ring seals the gap between the pump and the inner wall of the first opening.

7. The anti-reverse structure of the reservoir of the fluid ejector according to claim 5, characterized in that, The storage container includes a container body and a lid. The container body includes a body, a shoulder, and a neck. The body is cylindrical. The shoulder connects the body and the neck. The diameter of the shoulder gradually decreases from the end connected to the body to the end connected to the neck. A first opening is located on the neck. A third opening is located at the end of the container body away from the neck. The lid is detachably connected to the third opening. The housing has an extended annular support portion. A second opening is located inside the support portion. When the end of the container body with the neck is inserted into the second opening and connected to the pump, the shoulder rests against the annular support portion.

8. The anti-reverse structure of the reservoir of the fluid ejector according to claim 1, characterized in that, The storage vessel is provided with a first groove and a second groove. The first groove extends circumferentially along the storage vessel, and the second groove is a straight groove. One end of the second groove is connected to one end of the first groove, and the other end of the second groove extends and passes through the edge of the first opening. The pump's opening end is provided with a protrusion. When the pump's opening end is inserted into the first opening and the protrusion enters the first groove from the second groove, the storage vessel can rotate around a first axis on the pump to switch between a locked position and a released position. When the storage vessel rotates to the locking position, the protrusion aligns with the inner wall of the first groove, and the storage vessel is fixed relative to the pump along the extension direction of the first axis. When the reservoir is rotated to the release position, the protrusion is opposite to the second groove, and the reservoir can move along the extension direction of the first axis to separate from the pump.

9. The anti-reverse structure of the reservoir of the fluid ejector according to claim 8, characterized in that, The inner wall of the first groove is provided with a recess. When the storage vessel is rotated to the locking position, the protrusion moves and falls into the recess to restrict the pump and the storage vessel from rotating relative to each other around the first axis.

10. The anti-reverse structure of the reservoir of the fluid ejector according to claim 8, characterized in that, The storage vessel has an outwardly protruding part on its side, and the first groove and the second groove are located at the position of the protruding part.

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