CN113731669B

CN113731669B - Fluid storage tank

Info

Publication number: CN113731669B
Application number: CN202111002798.XA
Authority: CN
Inventors: 孙慧
Original assignee: SHENZHEN WISDOM SCIENCE AND TECHNOLOGY CO LTD
Current assignee: SHENZHEN WISDOM SCIENCE AND TECHNOLOGY CO LTD
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2022-07-15
Anticipated expiration: 2041-08-30
Also published as: WO2023030192A1; CN113731669A

Abstract

The invention discloses a fluid storage tank which comprises a tank body and a ventilation piston, wherein the tank body is used for storing paint, one end of the tank body can be connected with a spray gun, the other end of the tank body is provided with an air inlet, the ventilation piston is provided with an insertion part, the insertion part is inserted into the air inlet, the insertion part is provided with a limiting bulge, and the limiting bulge is used for preventing the ventilation piston from falling out of the air inlet. This fluid holding vessel can enough cooperate with the spray gun, directly uses as the watering can, can regard as the storage kettle of paint again to use, has avoided traditional need frequently to make a round trip to shift the operation of paint between special watering can and special storage kettle, has promoted the spraying and has saved the work efficiency of paint.

Description

Fluid storage tank

Technical Field

The invention relates to the technical field of paint and coating, in particular to a fluid storage tank.

Background

In industrial painting, such as automobile painting, paint is typically produced and color-matched at a paint shop or the like, which stores the color-matched paint in a closed canister. After the paint can is transported to use places such as an automobile 4S shop, because the paint can not be directly connected with the spray gun, a paint spraying worker needs to open the sealing cover of the paint can, pour the paint into a spray can special for paint spraying, and spray paint by using the spray gun matched with the spray can. This process adds an additional paint transfer process, increasing the labor intensity of the user.

If the existing storage tanks are to be made for spray irrigation, additional openings in the spray irrigation are required, which can involve sealing problems. If the storage tank is not well sealed after being opened, the function of storing paint can be influenced.

In addition, the spraying pot for spraying paint cannot be used as a storage device for daily paint due to the structure and material characteristics, so that after the spraying process is finished, residual paint in the spraying pot is poured into a special storage pot or is directly discarded, and waste is caused.

Disclosure of Invention

The invention aims to provide a fluid storage tank which can be matched with a spray gun to be directly used as a spray can and can also be used as a paint storage can, so that the traditional operation that paint needs to be frequently transferred back and forth between a special spray can and a special storage can is avoided, and the working efficiency of spraying and storing the paint is improved.

In order to achieve the technical effects, the technical scheme of the invention is as follows:

the invention discloses a fluid storage tank, comprising: the paint spraying device comprises a tank body, a spraying gun and a spraying nozzle, wherein the tank body is used for storing paint, one end of the tank body can be connected with the spraying gun, and the other end of the tank body is provided with an air inlet; the air inlet structure comprises an air inlet and an air outlet, wherein the air inlet is communicated with the air inlet, the air outlet is communicated with the air outlet, and the air outlet is communicated with the air inlet.

In some embodiments, a protrusion is provided on the bottom wall of the tank body, the air inlet is formed on the bottom wall of the protrusion, a mating thread is provided on the peripheral wall of the protrusion, and the vent piston has a mating screw hole that mates with the mating thread.

In some embodiments, the insertion portion includes a gradually-changing section and a flat section, one end of the gradually-changing section is connected with the bottom wall of the matching screw hole, the other end of the gradually-changing section is connected with the flat section, and the diameter of the gradually-changing section gradually decreases in a direction close to the flat section.

In some embodiments, an anti-rotation groove is formed in the vent piston, an elastic arm is arranged on the bottom wall of the tank body, an anti-rotation protrusion is arranged on the elastic arm, and the anti-rotation protrusion is matched in the anti-rotation groove.

In some embodiments, the fluid storage tank further includes a fitting member, the fitting member is in interference fit with the air inlet, an air flow channel is provided on the fitting member, the insertion portion is inserted into the air flow channel, and the vent piston is in threaded connection with the fitting member.

In some embodiments, the canister comprises: the kettle body is provided with one open end and the other closed end, and the air inlet is formed in the closed end of the kettle body; the kettle lid, the kettle lid cooperation is in on the open end of kettle body, the kettle lid is kept away from the one end of kettle body can be connected the spray gun.

In some specific embodiments, the pot lid is provided with a plurality of protrusions distributed at intervals along the circumferential direction of the pot lid.

In some specific embodiments, an output pipe is arranged at one end of the tank body, the output pipe is connected with the spray gun through an adapter, the outlet end of the output pipe is provided with locking threads, and the outlet end is in threaded connection with the adapter; the inlet end of the output pipe is provided with an annular bulge, and the annular bulge is inserted into the adapter; wherein: the adapter comprises a first matching section and a second matching section, the first matching section is inserted in the output pipe and sleeved on the annular bulge, and a first thread section matched with the locking thread is arranged on the first matching section; a second thread section is arranged at one end of the second matching section, which is far away from the first matching section, and the second thread section is connected with the spray gun; or: the adapter comprises a ball head section, a base section and a locking section, one end of the ball head section, which is far away from the ball head, is inserted in the output pipe and sleeved on the annular bulge, and a third thread section matched with the locking thread is arranged on the ball head section; one end of the base section is matched with the ball head of the ball head section, a fourth thread section matched with the spray gun is arranged at the other end of the base section, and the locking section is locked on the base section through threads and limits the ball head of the ball head section on the base section.

In some embodiments, an output tube is provided at one end of the canister body, the output tube is connected to the spray gun through an adapter and the output tube is inserted into the adapter.

In some specific embodiments, the outer peripheral wall of the output pipe is provided with an annular groove; the adapter includes: the body is sleeved on the output tube, positioning balls distributed along the circumferential direction of the body are arranged on the body, the positioning balls are matched in the annular groove, and a fifth thread section matched with the spray gun is arranged at one end of the body, which is far away from the output tube; the fixing ring is sleeved on the body, a first step surface is arranged on the inner peripheral wall of the fixing ring, and a second step surface is arranged on the outer peripheral wall of the body; the elastic piece is sleeved on the body, one end of the elastic piece abuts against the first step surface, and the other end of the elastic piece abuts against the second step surface; and the locking ring is sleeved on the body so as to lock the body on the output pipe.

The fluid storage tank has the beneficial effects that: after the user receives the sealed fluid storage tank, the fluid storage tank can be directly and quickly connected with the spray gun, after the connection is confirmed to be fastened, the spray gun can be turned over, and the vent piston is opened to normally spray paint. After the paint spraying process is finished, if paint remains in the kettle body, the ventilating piston is adjusted again to seal the air inlet, the spray gun is reversed to detach the fluid storage tank from the spray gun, and the fluid storage tank is closed by a plug after being detached. Therefore, the fluid storage tank can be matched with a spray gun and used as a spray can and a paint storage can. Compared with the traditional mode of adopting a special spraying pot and a special paint storage pot, the operation of frequently transferring paint between the paint storage pot and the special spraying pot is avoided, and the working efficiency of spraying and paint storage is obviously improved. In addition, in the paint spraying process, the inside of the kettle body can be communicated with the outside by adjusting the ventilating piston, so that the phenomenon that the flowing speed of paint is influenced due to unsmooth exhaust is avoided. In addition, the limiting bulge is arranged on the inserting part of the ventilation piston, so that the ventilation piston can be prevented from being separated from the tank body when a user takes out the ventilation piston, the use by the user is facilitated, and the loss of the piston is avoided.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

FIG. 1 is a schematic structural diagram of a fluid storage tank according to a first embodiment of the present invention;

FIG. 2 is a sectional view of a portion of a vent piston of a fluid storage tank blocking a vent hole according to a first embodiment of the present invention;

FIG. 3 is a cross-sectional view of a portion of a vent piston release vent of a fluid reservoir in accordance with a first embodiment of the present invention;

fig. 4 is a schematic structural view of a fluid storage tank at a vent piston according to a first embodiment of the present invention.

FIG. 5 is a sectional view of another embodiment of the fluid storage tank according to the first embodiment of the present invention;

FIG. 6 is a schematic structural view of a fluid storage tank according to a second embodiment of the present invention;

FIG. 7 is a sectional view showing a part of a fluid storage tank according to a second embodiment of the present invention;

FIG. 8 is a schematic structural view of a fluid storage tank according to a third embodiment of the present invention;

FIG. 9 is a sectional view showing a part of the structure of a fluid storage tank according to a third embodiment of the present invention;

FIG. 10 is a schematic structural view of a fluid storage tank according to a fourth embodiment of the present invention;

fig. 11 is a schematic view of a fluid storage tank with a vent piston removed according to a fourth embodiment of the present invention;

FIG. 12 is a partial schematic structural view of a fluid storage tank according to a fourth embodiment of the present invention;

fig. 13 is a partial sectional view of a fluid storage tank according to a fourth embodiment of the present invention;

FIG. 14 is a schematic view of a fluid storage tank according to a fifth embodiment of the present invention;

fig. 15 is a partial structural view of a fluid storage tank according to a fourth embodiment of the present invention.

Reference numerals:

1. a tank body; 11. a kettle body; 111. a projection; 1111. an air inlet; 112. a resilient arm; 1121. an anti-rotation protrusion;

12. a kettle cover; 121. an output pipe; 122. locking the threads; 123. an annular projection; 1211. an annular groove; 124. a boss portion; 125. a first hook;

2. a vent piston; 21. a plug-in part; 211. a transition section; 212. a straight section; 2121. a limiting bulge; 22. an anti-rotation slot;

3. an adapter; 31. a first mating segment; 311. a first thread segment; 32. a second mating segment; 321. a second thread segment; 33. a ball head section; 331. a third thread segment; 34. a base section; 341. a fourth thread segment; 35. a locking section; 36. a body; 361. a second step surface; 362. a fifth thread segment; 37. a fixing ring; 371. a first step surface; 38. an elastic member; 39. locking a ring; 310. an operating ring; 320. a positioning ball; 330. a main body; 3301. a second hook; 3302. a sixth thread segment;

4. a mating member; 41. an air flow channel.

Detailed Description

In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.

In addition, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature for distinguishing between descriptive features, non-sequential, and non-trivial. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

The specific structure of the fluid storage tank of the embodiment of the present invention will be described below with reference to fig. 1 to 15.

The invention discloses a fluid storage tank, as shown in fig. 1, the fluid storage tank of the embodiment comprises a tank body 1 and a ventilation piston 2, wherein the tank body 1 is used for storing paint, one end of the tank body 1 can be connected with a spray gun, the other end of the tank body is provided with an air inlet 1111, the ventilation piston 2 is provided with an insertion part 21, the insertion part 21 is inserted into the air inlet 1111, the insertion part 21 is provided with a limiting protrusion 2121, and the limiting protrusion 2121 is used for preventing the ventilation piston 2 from falling out of the air inlet 1111.

It will be appreciated that in actual use, the user, after receiving the enclosed fluid reservoir, can quickly connect directly to the spray gun and, after confirming that the connection is secure, can invert the spray gun for normal use. Thus, the fluid reservoir of this embodiment can be used directly with a watering can connected as a spray gun. In the process of painting, the vent piston 2 can be adjusted to enable the inserting part 21 to release the air inlet 1111 so as to enable the interior of the can body 1 to be communicated with the outside (as shown in fig. 3), thereby preventing the phenomenon that the flowing speed of paint is not uniform due to unsmooth air exhaust. After the paint spraying process is completed, if residual paint remains in the kettle body 11, the air inlet 1111 (as shown in fig. 2) can be closed by the insertion part 21 by adjusting the vent piston 2 again, the fluid storage tank can be detached from the spray gun after the spray gun is turned upside down, and the output pipe 121 can be closed by the plug after the adapter 3 is detached.

In addition, it should be added that, because of the above-mentioned limiting protrusion 2121 of the inserting part 21, the limiting protrusion 2121 can limit the moving stroke of the inserting part 21, when the limiting protrusion 2121 abuts against the end surface of the air inlet 1111, the air vent piston 2 is continuously adjusted, and due to the limiting function of the limiting protrusion 2121, the air vent piston 2 continues to move along the axial direction thereof, thereby avoiding the unfavorable phenomena that the inserting part 21 is easily separated from the air inlet 1111 and the air vent piston 2 is easily separated from the tank body 1.

It should be additionally noted that, in the present embodiment, the fluid in the tank 1 may be paint or other fluids, and the tank 1 may be used for containing paint, and other fluids, such as thinner, etc., may also be added after containing paint. Here, the type of fluid in the tank 1 is not particularly limited.

In some embodiments, as shown in fig. 2 to 3, the bottom wall of the can body 1 is provided with a projection 111, an air inlet 1111 is formed on the bottom wall of the projection 111, and a peripheral wall of the projection 111 is provided with mating threads; the breather piston 2 has a mating screw hole for mating with the mating screw thread and an insertion portion 21 inserted into the intake port 1111. It can be understood that, in the actual operation process, only the ventilation piston 2 needs to be rotated, so that the insertion part 21 moves relative to the air inlet 1111, and the opening and closing of the air inlet 1111 can be realized.

In some specific embodiments, as shown in fig. 2-3, the insertion-connection part 21 includes a gradually-changing section 211 and a straight section 212, one end of the gradually-changing section 211 is connected to the bottom wall of the screw hole, and the other end is connected to the straight section 212, and the diameter of the gradually-changing section 211 gradually decreases in a direction approaching the straight section 212. It can be understood that if the size of the spigot 21 is not changed, the size of the spigot 21 needs to be equal to the diameter of the air inlet 1111, and when the vent piston 2 is rotated, the spigot 21 needs to be completely separated from the air inlet 1111 to open the air inlet 1111, which makes the vent piston 2 rotate a large number of times, is inconvenient to operate, and makes it easy to directly unscrew the vent piston 2 from the boss 111. In the present embodiment, the insertion part 21 has a transition section 211, the diameter of the large end of the transition section 211 is larger than the diameter of the air inlet 1111, and the diameter of the small end is smaller than the diameter of the air inlet 1111. In the process of actual operation, only a few circles of the ventilation piston 2 need to be rotated, so that a circulation gap is formed between the insertion part 21 and the air inlet 1111, and the insertion part 21 is not required to be completely separated from the air inlet 1111, so that the ventilation piston 2 can be operated conveniently, and the disadvantage that the ventilation piston 2 is easy to separate from the protruding part 111 is avoided.

Advantageously, the flat section 212 is provided with a deformation groove, so that the flat section 212 can be easily deformed during the installation process, and the flat section 212 with the limiting protrusion 2121 can be smoothly inserted into the air inlet 1111, thereby facilitating the installation of the vent piston 2 on the tank 1.

In some embodiments, the fluid storage tank further includes a fitting 4, the fitting 4 is in interference fit with the air inlet 1111, an air flow channel 41 is provided on the fitting 4, the insertion portion 21 is inserted into the air flow channel 41, and the vent piston 2 is in threaded connection with the fitting 4. It can be understood that the connection of the vent piston 2 and the tank 1 is realized by using a fitting piece 4, so that the structure of the tank 1 is simplified, and the installation and the disassembly of the vent piston 2 are facilitated. Optionally, the mating member 4 is a plastic member.

In some embodiments, as shown in fig. 4, the vent piston 2 is provided with an anti-rotation slot 22, the bottom wall of the can body 1 is provided with an elastic arm 112, the elastic arm 112 is provided with an anti-rotation protrusion 1121, and the anti-rotation protrusion 1121 is fitted in the anti-rotation slot 22. It will be appreciated that in order to avoid the accidental opening of the air inlet 1111 caused by the rotation of the vent piston 2, the anti-rotation protrusions 1121 on the elastic arms 112 are capable of engaging with the anti-rotation slots 22, such that the anti-rotation protrusions 1121 can limit the rotation of the vent piston 2 during the use of the fluid storage tank, thereby avoiding the occurrence of the disadvantage that the air inlet 1111 is opened due to the accidental rotation of the vent piston 2. The anti-rotation protrusions 1121 are provided on the elastic arms 112, and when the vent piston 2 needs to be rotated, a user only needs to break the elastic arms 112 to deform the elastic arms, so that the anti-rotation protrusions 1121 are separated from the anti-rotation grooves 22. Therefore, the elastic arm 112 and the anti-rotation protrusion 1121 which are additionally arranged can not only avoid the unfavorable condition that the air inlet 1111 is opened due to the accidental rotation of the vent piston 2, but also avoid the difficulty in rotating the vent piston 2 for a user, thereby improving the use reliability of the fluid storage tank.

In some embodiments, as shown in fig. 1, the pot body 1 includes a pot body 11 and a pot lid 12, one end of the pot body 11 is open, the other end is closed, the air inlet 1111 is disposed on the closed end of the pot body 11, the pot lid 12 fits into the open end of the pot body 11, and one end of the pot lid 12 away from the pot body 11 can be connected to a spray gun. It can be understood that the kettle body 11 and the kettle lid 12 have various connection modes, and in some embodiments, as shown in fig. 1, the kettle body 11 and the kettle lid 12 are matched through threads; in some embodiments, as shown in fig. 10, the kettle body 11 and the kettle lid 12 are connected by welding, crimping, or the like. That is, in the invention, the kettle body 11 and the kettle lid 12 can be made into detachable structures according to actual needs, so that paint can be added conveniently; the kettle body 11 and the kettle cover 12 can also be made into non-detachable structures according to actual needs, so that the sealing property of the tank body 1 is improved, and the transportation is facilitated.

In some embodiments, as shown in fig. 1, the lid 12 has a plurality of protrusions 124 spaced around the circumference thereof. According to the foregoing, in the actual use process, the can body 1 is inverted, and the raised portion 124 on the lid 12 can be conveniently held by the user, so as to facilitate the use of the user. It should be additionally noted that, in the embodiment of the present invention, the shape and the number of the convex portions 124 are not limited.

In some embodiments, as shown in fig. 5, an output pipe 121 is provided at one end of the tank 1, and the output pipe 121 is connected to the spray gun through the adapter 3. It will be appreciated that the connection of the can body 1 to the adapter 3 is facilitated by the provision of the outlet duct 121 in connection with the adapter 3. And if directly adopt output tube 121 to link to each other with the spray gun, can lead to jar body 1 to be applicable to only a kind of spray gun, the passing through adapter 3 of this embodiment links to each other with the spray gun, selects adapter 3 according to the type of spray gun in the actual operation in-process, can make the fluid storage tank of this embodiment and multiple spray gun cooperation, has expanded the application scope of the fluid storage tank of this embodiment, has promoted user's use satisfaction.

In some embodiments, as shown in fig. 5, the outlet end of the outlet tube 121 has locking threads 122, which are threadedly connected to the adapter 3; the inlet end of the output tube 121 has an annular projection 123, the annular projection 123 being inserted in the adapter 3. It will be appreciated that the annular protrusion 123 inserted into the adapter 3 can improve the connection stability between the lid 12 and the adapter 3, so as to ensure the connection stability between the whole fluid storage tank and the spray gun. The locking thread 122 of the outlet section can further improve the connection stability of the pot lid 12 and the adapter 3 on one hand, and improve the connection sealing performance of the pot lid 12 and the adapter 3 on the other hand, thereby avoiding the possibility that paint flows out from the connection gap between the adapter 3 and the pot lid 12 in the paint spraying process.

In some specific embodiments, as shown in fig. 5, the adapter 3 includes a first mating segment 31 and a second mating segment 32. The first matching section 31 is inserted into the output pipe 121 and sleeved on the annular protrusion 123, and a first thread section 311 matched with the locking thread 122 is arranged on the first matching section 31; at the end of the second fitting section 32 remote from the first fitting section 31, a second threaded section 321 is provided, and the second threaded section 321 is connected with the spray gun. It will be appreciated that the first mating section 31 is inserted into the outlet tube 121 and then fits over the annular protrusion 123. That is to say, first cooperation section 31 is pressed from both sides between the internal perisporium of output tube 121 and the periphery wall of annular protrusion 123, not only can promote the stability of being connected of adapter 3 and pot lid 12, can also promote the connection leakproofness of adapter 3 and pot lid 12. The second thread segments 321 cooperate with the locking threads 122, on the one hand, to facilitate the mounting of the adapter 3, so that during the mounting of the adapter 3, only the adapter 3 needs to be rotated; the other side also improves the connection stability and connection sealing property of the adapter 3 and the output pipe 121. The second matching section 32 is matched with the spray gun by adopting a second thread section 321, so that the connection operation of the adapter 3 and the spray gun is simplified; on the other hand, the connection stability and the connection tightness of the adapter 3 and the spray gun are also ensured.

In some embodiments, as shown in fig. 7, the adapter 3 includes a ball head section 33, a base section 34 and a locking section 35, wherein an end of the ball head section 33 away from the ball head is inserted into the output tube 121 and sleeved on the annular protrusion 123. The ball head section 33 is provided with a third thread section 331 matched with the locking thread 122, one end of the base section 34 is matched with the ball head of the ball head section 33, the other end of the base section 34 is provided with a fourth thread section 341 matched with the spray gun, and the locking section 35 is locked on the base section 34 through threads and limits the ball head of the ball head section 33 on the base section 34. It will be appreciated that the ball head section 33 is inserted into the outlet tube 121 and fits over the annular projection 123. That is to say, the ball head section 33 is clamped between the inner peripheral wall of the output pipe 121 and the outer peripheral wall of the annular protrusion 123, which not only can improve the connection stability of the adapter 3 and the pot lid 12, but also can improve the connection sealing performance of the adapter 3 and the pot lid 12. The bulb of bulb section 33 cooperation is in base section 34, that is to say, bulb section 33 can rotate relative base section 34 to in the in-service use in-process, pot lid 12 just can rotate with the spray gun relatively, thereby conveniently uses the spray gun under the occasion of different requirements. The locking section 35 is additionally arranged, so that the connection stability of the base section 34 and the ball head section 33 can be ensured, the fault phenomenon that the ball head section 33 is separated from the base section 34 is avoided, and the use reliability of the fluid storage tank provided by the embodiment is ensured.

In addition, the base section 34 is matched with the locking thread 122 through the third thread section 331, on one hand, the installation of the adapter 3 is facilitated, and only the base section 34 needs to be rotated in the process of installing the adapter 3; on the other hand, the connection stability and connection tightness of the adapter 3 and the output pipe 121 are also improved. The base section 34 is matched with the spray gun by adopting the third thread section 331, so that the connection operation of the adapter 3 and the spray gun is simplified; on the other hand, the connection stability and the connection tightness of the adapter 3 and the spray gun are also ensured.

In some embodiments, the output tube 121 is inserted into the adapter 3. Compared with the threaded connection described above, the output tube 121 is inserted into the adapter 3 to realize connection, so that the connection structure between the output tube and the adapter is simpler and the operation is convenient.

In some embodiments, as shown in FIG. 9, the outer peripheral wall of the output tube 121 is provided with an annular groove 1211. The adapter 3 comprises a body 36 and a fixing ring 37, the body 36 is sleeved on the output tube 121, the body 36 is provided with positioning balls 320 distributed along the circumferential direction of the body 36, the positioning balls 320 are matched in the annular groove 1211, one end of the body 36, far away from the output tube 121, is provided with a fifth thread section 362 matched with the spray gun, and the fixing ring 37 is sleeved on the body 36. It will be appreciated that in practice, after the positioning ball 320 is mounted on the main body 36, the main body 36 is sleeved on the output tube 121, and the main body 36 is pushed to make the positioning ball 320 enter the annular groove 1211, so as to complete the connection between the lid 12 and the adapter 3. This connection is very simple and provides the user with the convenience of attaching the adapter 3 to the lid 12.

In some more specific embodiments, as shown in fig. 9, the inner peripheral wall of the fixing ring 37 is provided with a first step surface 371, the outer peripheral wall of the body 36 is provided with a second step surface 361, and the adapter 3 further includes an elastic member 38 and a locking ring 39. The elastic element 38 is sleeved on the main body 36, one end of the elastic element 38 abuts against the first step surface 371, the other end abuts against the second step surface 361, and the locking ring 39 is sleeved on the main body 36 to lock the main body 36 on the output tube 121. It will be appreciated that, during the installation process, the fixing ring 37 is pushed to compress the elastic element 38, so that the part of the body 36 hidden by the fixing ring 37 extends out of the fixing ring 37, which facilitates the insertion of the output tube 121 into the body 36 by the user, and after the connection is completed, the fixing ring 37 is reset under the action of the elastic element 38 under the action of the removing the action actually on the fixing ring 37, so that the fixing ring 37 does not need to be reset manually.

Optionally, the fixing ring 37 is sleeved with an operating ring 310, and one or more operating handles are arranged on the peripheral wall of the operating ring 310, so that a user can press the fixing ring 37 by pressing the operating handles, and the operation is very convenient.

The structure of a fluid storage tank provided by five embodiments of the present invention will be described with reference to fig. 1 to 15.

The first embodiment is as follows:

a fluid storage tank provided in a first embodiment of the present invention will be described with reference to fig. 1 to 5.

The fluid storage tank provided by the embodiment comprises a tank body 1, a vent piston 2 and an adapter 3, wherein the tank body 1 comprises a kettle body 11 and a kettle cover 12. One end of the kettle body 11 is opened, the other end is closed, the closed end of the kettle body 11 is provided with a convex part 111 and an elastic arm 112, an air inlet 1111 is formed on the bottom wall of the convex part 111, a matching thread is arranged on the circumferential wall of the convex part 111, and the kettle lid 12 is buckled on the kettle body 11 and is in threaded connection with the kettle lid 12. An output pipe 121 is arranged at one end of the kettle lid 12 far away from the kettle body 11, an inlet end of the output pipe 121 is provided with an annular bulge 123, and an outlet end is provided with a locking thread 122. The elastic arm 112 is provided with an anti-rotation protrusion 1121. The vent piston 2 has a mating screw hole that mates with the mating screw thread, and an insertion portion 21 that is inserted into the intake port 1111. The insertion part 21 comprises a gradual change section 211 and a straight section 212, wherein one end of the gradual change section 211 is connected with the bottom wall of the screw hole in a matching way, the other end of the gradual change section is connected with the straight section 212, and the diameter of the gradual change section 211 is gradually reduced in the direction close to the straight section 212. The straight section 212 is provided with a limiting protrusion 2121, and the limiting protrusion 2121 can stop against the inner peripheral bottom wall of the convex part 111. A plurality of anti-rotation grooves 22 are formed in the outer peripheral wall of the vent piston 2 at intervals, and the anti-rotation grooves 22 are matched with the anti-rotation protrusions 1121.

The adapter 3 comprises a first fitting section 31 and a second fitting section 32, wherein the first fitting section 31 is inserted into the output tube 121 and is sleeved on the annular protrusion 123. The first engaging section 31 is provided with a first thread section 311 engaging with the locking thread 122. The end of the second fitting section 32 remote from the first fitting section 31 is provided with a second threaded section 321, and the second threaded section 321 is used for connecting with a spray gun.

Example two:

a fluid storage tank provided in a second embodiment of the present invention will be described with reference to fig. 6 to 7.

The fluid storage tank provided by the embodiment comprises a tank body 1, a vent piston 2 and an adapter 3, wherein the tank body 1 comprises a kettle body 11 and a kettle cover 12. One end of the kettle body 11 is arranged in an open way, and the other end is arranged in a closed way. The kettle lid 12 is buckled on the kettle body 11 and is in threaded connection with the kettle lid 12, an output pipe 121 is arranged at one end, far away from the kettle body 11, of the kettle lid 12, the inlet end of the output pipe 121 is provided with an annular bulge 123, and the outlet end is provided with a locking thread 122. Adapter 3 includes bulb section 33, base section 34 and locking section 35, the one end of bulb is kept away from to bulb section 33, peg graft in output tube 121 and establish on annular protrusion 123, be equipped with on the bulb section 33 with locking screw thread 122 complex third screw thread section 331, the bulb cooperation of one end and bulb section 33 of base section 34, be equipped with on the other end with spray gun complex fourth screw thread section 341, locking section 35 passes through the screw thread closure on base section 34, and restricts the bulb of bulb section 33 on base section 34. The structure of the vent piston 2 and the tank 1 is the same as that of the first embodiment, and the details are not repeated herein.

Example three:

a fluid storage tank provided in a third embodiment of the present invention will be described with reference to fig. 8 to 9.

The fluid storage tank provided by the embodiment comprises a tank body 1, a ventilation piston 2 and an adapter 3, wherein the tank body 1 comprises a kettle body 11 and a kettle cover 12, one end of the kettle body 11 is arranged in an open mode, and the other end of the kettle body is arranged in a closed mode. The kettle lid 12 is buckled on the kettle body 11 and connected with the kettle body 11 through threads, an output pipe 121 is arranged at one end of the kettle lid 12 far away from the kettle body 11, and an annular groove 1211 is arranged on the outer peripheral wall of the output pipe 121. The adaptor 3 comprises a body 36, a fixing ring 37, a resilient member 38, a locking ring 39 and an operating ring 310. The main body 36 is sleeved on the output pipe 121, the main body 36 is provided with positioning balls 320 distributed along the circumferential direction of the main body 36, the positioning balls 320 are matched in the annular groove 1211, the outer circumferential wall of the main body 36 is provided with a second step surface 361, one end of the main body 36, which is far away from the output pipe 121, is provided with a fifth thread section 362 matched with the spray gun, the fixing ring 37 is sleeved on the main body 36, and the inner circumferential wall of the fixing ring 37 is provided with a first step surface 371. The elastic element 38 is disposed on the body 36, one end of the elastic element 38 abuts against the first step surface 371, the other end abuts against the second step surface 361, and the locking ring 39 is disposed on the body 36 to lock the body 36 on the output tube 121. The operation ring 310 is sleeved on the fixing ring 37, and two operation handles are arranged on the peripheral wall of the operation ring 310.

The structure of the vent piston 2 and the tank 1 is the same as that of the first embodiment, and the details are not repeated herein.

Example four:

a fluid storage tank provided in a fourth embodiment of the present invention will be described with reference to fig. 10 to 13.

The fluid storage tank that this embodiment provided includes jar body 1, vent piston 2, adapter 3 and fitting piece 4, and jar body 1 includes kettle body 11 and pot lid 12, and kettle body 11 and pot lid 12 punching press are continuous, and kettle body 11 and pot lid 12 are non-detachable and are connected. An output tube 121 is disposed at one end of the kettle lid 12 away from the kettle body 11, and an inlet end of the output tube 121 is provided with a first hook 125. The elastic arm 112 is provided with an anti-rotation protrusion 1121. The fitting member 4 is in interference fit with the air inlet 1111, and an air flow channel 41 is formed on the fitting member 4. The engaging member 4 is provided with a resilient arm 112, and the resilient arm 112 is provided with an anti-rotation protrusion 1121. The vent piston 2 is in threaded fit with the fitting piece 4, and the vent piston 2 is provided with an insertion part 21 inserted in the air flow channel 41. The insertion part 21 comprises a gradual change section 211 and a straight section 212, wherein one end of the gradual change section 211 is connected with the bottom wall of the screw hole in a matching way, the other end of the gradual change section is connected with the straight section 212, and the diameter of the gradual change section 211 is gradually reduced in the direction close to the straight section 212. The straight section 212 is provided with a limiting protrusion 2121, and the limiting protrusion 2121 can stop against the inner peripheral bottom wall of the convex part 111. A plurality of anti-rotation grooves 22 are formed in the outer peripheral wall of the vent piston 2 at intervals, and the anti-rotation grooves 22 are matched with the anti-rotation protrusions 1121.

The adapter 3 includes a main body 330, one end of the main body 330 is provided with a plurality of second hooks 3301, the second hooks 3301 are arranged at intervals, the main body 330 is sleeved on the output tube 121, and the second hooks 3301 are clamped on the first hooks 125. The end of the body 36 remote from the outlet pipe 121 is provided with a sixth thread section 3302 for engagement with the lance.

Example five:

as shown in fig. 14 to 15, the present embodiment provides a fluid storage tank including a tank body 1, a vent piston 2 and an adapter 3, wherein the tank body 1 includes a pot body 11 and a pot lid 12. One end of the kettle body 11 is arranged in an open way, and the other end is arranged in a closed way. The kettle lid 12 is buckled on the kettle body 11 and is in threaded connection with the kettle lid 12, an output pipe 121 is arranged at one end of the kettle lid 12 far away from the kettle body 11, and an inlet end of the output pipe 121 is provided with a first hook 125. The adapter 3 includes a main body 330, one end of the main body 330 is provided with a plurality of second hooks 3301, the second hooks 3301 are spaced, the main body 330 is sleeved on the output tube 121, and the second hooks 3301 are clipped on the first hooks 125. The end of the body 36 remote from the outlet pipe 121 is provided with a sixth thread section 3302 for engagement with the lance. The structure of the vent piston 2 and the tank 1 is the same as that of the first embodiment, and the details are not repeated herein.

In the description herein, references to the description of "some embodiments," "other embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.

Claims

1. A fluid storage tank, comprising:

the paint storage tank comprises a tank body (1), wherein the tank body (1) is used for storing paint, one end of the tank body (1) can be connected with a spray gun, and the other end of the tank body is provided with an air inlet (1111);

the ventilation piston (2) is provided with an insertion part (21), and the insertion part (21) is inserted into the air inlet (1111); wherein:

the inserting part (21) comprises a gradual change section (211) and a flat straight section (212), the diameter of the gradual change section (211) is gradually reduced in the direction close to the flat straight section (212), a limiting protrusion (2121) is arranged on the flat straight section (212), and the limiting protrusion (2121) is used for preventing the ventilation piston (2) from being separated from the air inlet (1111).

2. A fluid storage tank according to claim 1, wherein a protrusion (111) is provided on a bottom wall of the tank body (1), the air inlet (1111) is formed on a bottom wall of the protrusion (111), a mating screw thread is provided on a peripheral wall of the protrusion (111), and the vent piston (2) has a mating screw hole which mates with the mating screw thread.

3. The fluid reservoir of claim 2, wherein the transition section (211) is connected at one end to a bottom wall of the mating screw hole.

4. The fluid storage tank according to claim 1, wherein the vent piston (2) is provided with an anti-rotation groove (22), the bottom wall of the tank body (1) is provided with an elastic arm (112), the elastic arm (112) is provided with an anti-rotation protrusion (1121), and the anti-rotation protrusion (1121) is fitted in the anti-rotation groove (22).

5. The fluid storage tank as claimed in claim 1, further comprising a fitting member (4), wherein the fitting member (4) is in interference fit with the air inlet (1111), an air flow channel (41) is formed on the fitting member (4), the insertion portion (21) is inserted into the air flow channel (41), and the vent piston (2) is in threaded connection with the fitting member (4).

6. A fluid storage tank according to any of claims 1-5, characterized in that the tank body (1) comprises:

the kettle comprises a kettle body (11), wherein one end of the kettle body (11) is arranged in an open mode, the other end of the kettle body is arranged in a closed mode, and the air inlet (1111) is formed in the closed end of the kettle body (11);

pot lid (12), pot lid (12) cooperation is in on the open end of kettle body (11), pot lid (12) are kept away from the one end of kettle body (11) can be connected the spray gun.

7. The fluid storage tank as defined in claim 6, wherein said lid (12) is provided with a plurality of projections (124) spaced circumferentially thereof.

8. A fluid storage tank as claimed in any one of claims 1 to 5, characterised in that the tank (1) is provided at one end with an outlet pipe (121), the outlet pipe (121) being connected to the spray gun via an adapter (3), the outlet end of the outlet pipe (121) being provided with a locking screw thread (122) and being screwed to the adapter (3); the inlet end of the output pipe (121) is provided with an annular bulge (123), and the annular bulge (123) is inserted in the adapter (3); wherein:

the adapter (3) comprises a first matching section (31) and a second matching section (32), the first matching section (31) is inserted into the output pipe (121) and sleeved on the annular protrusion (123), and a first thread section (311) matched with the locking thread (122) is arranged on the first matching section (31); a second threaded section (321) is arranged at one end, away from the first matching section (31), of the second matching section (32), and the second threaded section (321) is connected with the spray gun; or:

the adapter (3) comprises a ball head section (33), a base section (34) and a locking section (35), one end, far away from the ball head, of the ball head section (33) is inserted into the output pipe (121) and sleeved on the annular protrusion (123), and a third thread section (331) matched with the locking thread (122) is arranged on the ball head section (33); one end of the base section (34) is matched with the ball head of the ball head section (33), a fourth thread section (341) matched with the spray gun is arranged at the other end of the base section (34), and the locking section (35) is locked on the base section (34) through threads and limits the ball head of the ball head section (33) on the base section (34).

9. A fluid storage tank as claimed in any of claims 1 to 5, characterized in that the tank (1) is provided at one end with an outlet pipe (121), the outlet pipe (121) being connected to the spray gun via an adapter (3) and the outlet pipe (121) being inserted into the adapter (3).

10. The fluid storage tank as claimed in claim 9, wherein the outer peripheral wall of the outlet pipe (121) is provided with an annular groove (1211); the adapter (3) comprises:

the body (36) is sleeved on the output pipe (121), positioning balls (320) distributed along the circumferential direction of the body (36) are arranged on the body (36), the positioning balls (320) are matched in the annular groove (1211), and a fifth thread section (362) matched with the spray gun is arranged at one end, far away from the output pipe (121), of the body (36);

the fixing ring (37) is sleeved on the body (36), a first step surface (371) is arranged on the inner peripheral wall of the fixing ring (37), and a second step surface (361) is arranged on the outer peripheral wall of the body (36);

the elastic piece (38) is sleeved on the body (36), one end of the elastic piece (38) abuts against the first step surface (371), and the other end of the elastic piece (38) abuts against the second step surface (361);

the locking ring (39) is sleeved on the body (36) so as to lock the body (36) on the output pipe (121).