Handheld self-cleaning spray gun

Abstract

The invention relates to the field of cleaning spray guns, and discloses a handheld self-cleaning spray gun which comprises a gun handle, a movable assembly and a cleaning assembly, a main cavity is formed in the right side of the interior of the gun handle, a side cavity is formed in the left side of the interior of the gun handle, clamping grooves are formed in the two ends of the left side of the gun handle, and an outer groove is formed in the outer side, away from the main cavity, of the interior of the gun handle in a surrounding mode; a rubber cover is arranged on the left side of the gun handle, a sliding rod is arranged in the gun handle, movable assemblies are arranged at the two ends of the sliding rod, and a cleaning assembly is arranged on the left side of the sliding rod. According to the device, the special shapes and material characteristics of the conical head and the crushing cone are utilized, blockages can be easily penetrated and crushed, then decomposed particles are washed clean through high-pressure water flow or air flow, and the whole process is rapid and efficient.

Description

Technical Field

[0001] The invention relates to the field of cleaning spray guns, in particular to a handheld self-cleaning spray gun. Background Art

[0002] The handheld self-cleaning spray gun is a portable device that integrates cleaning and self-cleaning functions. It is widely used in industrial cleaning, household cleaning, agricultural irrigation and other fields. Its core advantage is that it can automatically clean the residue and blockage inside the spray gun while spraying the cleaning liquid, thereby ensuring continuous cleaning effect and efficient operation efficiency. In industrial production, mechanical equipment, production lines and tools often need to be cleaned regularly to remove oil, dust and other pollutants to maintain the normal operation of the equipment and extend its service life. In household cleaning, cleaning of kitchens, bathrooms, balconies and other areas also requires efficient and convenient cleaning tools. In agricultural irrigation, self-cleaning spray guns can ensure the unobstructed flow of the irrigation system and avoid uneven irrigation and crop damage caused by blockage. Therefore, the emergence of handheld self-cleaning spray guns not only improves the efficiency and effectiveness of cleaning operations, but also reduces the labor intensity and cost during the cleaning process, which is of great significance to improving production efficiency and improving the quality of life.

[0003] Although traditional handheld spray guns play an important role in cleaning operations, they still have many shortcomings in practical applications, which have an adverse effect on cleaning effects and operating efficiency. First, after long-term use, cleaning liquid and impurities are easily left inside the traditional spray gun, causing the spray gun to be blocked, affecting the spray effect and cleaning efficiency, which not only increases the difficulty and time cost of the cleaning operation, but also may cause secondary pollution to the cleaning target. Secondly, traditional spray guns often need to frequently replace or clean the nozzle during the cleaning process, which increases the complexity of operation and labor costs. In addition, the design of some traditional spray guns is not user-friendly, and the grip and operation convenience are poor. Long-term use can easily cause fatigue and discomfort to the operator. These problems not only limit the application scope of traditional spray guns, but also reduce the efficiency and effect of cleaning operations, which constitute an obstacle to improving production efficiency and improving the quality of life. Therefore, the development of a handheld spray gun with self-cleaning function, convenient operation, high efficiency and environmental protection is of great significance for solving the shortcomings of traditional technology and improving the efficiency and effect of cleaning operations. For this reason, the present invention proposes a handheld self-cleaning spray gun. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a handheld self-cleaning spray gun to solve the above-mentioned problems.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a handheld self-cleaning spray gun, comprising a gun handle, a movable assembly and a cleaning assembly, wherein a main cavity is provided on the right side of the gun handle, a side cavity is provided on the left side of the gun handle, a clamping groove is provided at both ends of the left side of the gun handle, an outer groove is provided around the outside of the gun handle away from the main cavity, a rubber cover is provided on the left side of the gun handle, a sliding rod is provided inside the gun handle, movable assemblies are provided at both ends of the sliding rod, and a cleaning assembly is provided on the left side of the sliding rod; The movable assembly includes a movable rod, a connecting rod, a compression spring, and a limiting ring. Both ends of the sliding rod are provided with movable rods, the right side of the movable rod is provided with a connecting rod, the right side of the connecting rod is provided with a compression spring, and both ends of the movable rod are penetrated with limiting rings; The cleaning assembly comprises an insertion rod, a cone head and a crushing cone. The insertion rod is arranged on the left side of the sliding rod, the cone head is arranged on the left side of the insertion rod, and the crushing cone is arranged on the left side of the cone head.

[0006] Preferably, the left two ends of the gun handle are provided with inwardly recessed circular grooves, the two ends of the gun handle are provided with inwardly penetrating grooves, and the front side of the gun handle is provided with an inwardly recessed L-shaped groove.

[0007] Preferably, a connecting groove is provided on the inner side of the rubber cover, and round buckles are provided on both ends of the right side of the rubber cover.

[0008] Preferably, two ends of the two groups of movable rods extend to and penetrate two ends of the gun handle, and the movable rods penetrate the outer groove.

[0009] Preferably, a left end of the compression spring is fixedly connected to the connecting rod, and a right end of the compression spring is fixedly connected to a right end of the outer groove.

[0010] Preferably, a grip is provided on the right side of the gun handle, an anti-slip cover is provided around the outer side of the grip, and inwardly recessed annular grooves are provided on both sides of the outer side of the grip away from the anti-slip cover.

[0011] Preferably, swivels are slidably provided in the annular grooves on both sides of the outer side of the handle, and two groups of protective handles are provided on the outer side of the swivel, and the two groups of protective handles adopt a nested structure.

[0012] A connecting pipe is arranged on the right side of the handle, and an inwardly recessed L-shaped groove is arranged on the inner side of the right side of the connecting pipe.

[0013] A hose is provided on the right side of the connecting pipe through an L-shaped groove, and the other end of the hose is connected to an external water source transmission device.

[0014] Compared with the prior art, the present invention provides a handheld self-cleaning spray gun, which has the following beneficial effects: The cone head and crushing cone in the cleaning component can quickly break down the originally larger blockages into tiny particles. When high-pressure water flow or air flow is introduced into the device, these decomposed particles will be quickly washed and taken out of the device under the impact of strong water flow or air flow. First of all, it significantly shortens the time required for cleaning, so that the cleaning work that may have taken a lot of time can be completed in a short time, greatly improving the efficiency of the cleaning operation and saving users valuable time costs. Secondly, it effectively avoids equipment damage caused by blockage, reduces the maintenance frequency and cost of equipment, and extends the service life of the equipment, providing users with a more stable and reliable cleaning experience, so that users no longer need to worry about frequent maintenance of equipment failures, and can devote themselves to cleaning work to improve work efficiency and quality.

[0015] Through the carefully designed connecting groove and round buckle on the inside of the rubber cover, a tight and seamless connection with the gun handle is achieved. The connecting groove adopts a dovetail groove design, and its inner surface is specially frosted to increase the friction between the round buckle and ensure that the rubber cover will not be easily displaced when subjected to external force. The shape of the round buckle fits the connecting groove perfectly and can be tightly embedded in it to form a stable connection structure. This tight connection not only ensures that the rubber cover is firmly fixed during the cleaning process, but also effectively prevents the leakage of liquid or gas during the cleaning process, ensures the smooth progress of the cleaning operation, and avoids poor cleaning effect and pollution to the surrounding environment caused by leakage. When the rubber cover needs to be replaced or cleaned and maintained, the user does not need to use any complicated tools, but only needs to gently press the round buckle to disengage it from the locking position of the connecting groove, and the rubber cover can be easily removed. During installation, align the rubber cover with the connecting groove on the gun handle, and with a gentle push, the round buckle will automatically snap into the connecting groove to complete the installation process. The entire operation is simple and quick, which greatly improves the user experience and makes the user more handy when using and maintaining the equipment, reducing the time waste and operation inconvenience caused by cumbersome installation and disassembly steps.

[0016] The design of the handle takes full account of the ergonomic principles. Its shape is carefully shaped according to the natural gripping posture of the human hand. The surface is made of soft rubber material with good touch, which provides the operator with a comfortable grip and effectively reduces the hand fatigue caused by long-term grip. At the same time, the anti-slip sleeve equipped on the handle adopts an advanced anti-slip texture design. These textures have grooves and protrusions of moderate depth, which can still provide reliable friction when the hands are sweating or in a humid environment, ensuring the stability of the operator during operation and greatly reducing the risk of operational errors caused by hand slippage. In addition, the swivel and protective handle on the outside of the handle adopt a unique nested structure design. The swivel can rotate freely and flexibly within the track of the protective handle. There are multiple card slots in different positions on its surface. The operator can adjust the swivel to a suitable position according to the size of his hand and personal comfort, and fix it through the card slot, so as to easily adjust the gripping posture, further improving the convenience of use. This flexible adjustment method enables users with different hand shapes to find the most suitable gripping method for themselves, improving the comfort and accuracy of operation. Moreover, an innovative quick-connect connector design is adopted between the connecting pipe and the hose. This connector has a simple and easy-to-use plug-in structure, which can complete the connection and disconnection operations in an instant, while ensuring the tightness and stability of the connection, providing the operator with a more flexible and convenient operation experience. Compared with traditional spray guns, this device is handier in operation. Whether it is fine cleaning in a narrow space or quick cleaning in a large area, it can easily cope with various complex cleaning scenes, bringing users a more efficient and convenient cleaning solution, greatly improving the efficiency and quality of cleaning operations, and allowing users to feel unprecedented convenience and comfort during use.

[0017] It also shows excellent performance advantages in terms of maintenance and care. The design of the rubber cover tightly connected to the gun handle through the connecting groove and the round buckle makes the replacement and cleaning of the rubber cover extremely simple and quick. When replacing the rubber cover, as mentioned above, the user can easily complete the disassembly and installation operations without the help of complex tools, which greatly saves maintenance time and labor costs. Moreover, this connection method allows the rubber cover to be easily disassembled and cleaned after daily use, ensuring that it always remains clean, avoiding the problem of equipment performance and cleaning effect affected by dirt accumulation on the rubber cover, allowing users to easily perform regular maintenance and care on the equipment, promptly discover and solve potential problems, thereby ensuring that the equipment is always in the best working condition. This design not only significantly reduces the maintenance cost of the equipment, reduces downtime and repair costs caused by equipment failure, but also improves the overall performance and stability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional cross-sectional structure of the gun handle in the present invention; Figure 3 It is a schematic diagram of the three-dimensional cross-sectional structure of the rubber cover in the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the movable component in the present invention; Figure 5 It is a schematic diagram of the three-dimensional explosion structure of the cleaning component in the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the handle in the present invention; Figure 7 It is a schematic diagram of a partial three-dimensional structure of the handle in the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the inner connecting tube in the present invention.

[0019] In the figure: 1. gun handle; 101. main chamber; 102. side chamber; 103. slot; 104. outer slot; 105. sliding rod; 2. rubber cover; 201. connecting slot; 202. round buckle; 3. movable assembly; 301. movable rod; 302. connecting rod; 303. compression spring; 304. limiting ring; 4. cleaning assembly; 401. insertion rod; 402. cone head; 403. crushing cone; 5. grip; 501. anti-slip cover; 502. swivel; 503. protective handle; 6. connecting pipe; 7. hose. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-8 A handheld self-cleaning spray gun includes a gun handle 1, a movable component 3 and a cleaning component 4. A main cavity 101 is provided on the right side of the gun handle 1, a side cavity 102 is provided on the left side of the gun handle 1, and slots 103 are provided at both ends of the left side of the gun handle 1. An outer groove 104 is provided around the outer side of the gun handle 1 away from the main cavity 101. A rubber cover 2 is provided on the left side of the gun handle 1. A sliding rod 105 is provided inside the gun handle 1. The movable components 3 are provided at both ends of the sliding rod 105. A cleaning component 4 is provided on the left side of the sliding rod 105. The movable assembly 3 includes a movable rod 301, a connecting rod 302, a compression spring 303, and a limiting ring 304. The movable rods 301 are provided at both ends of the sliding rod 105. The right side of the movable rod 301 is provided with a connecting rod 302. The right side of the connecting rod 302 is provided with a compression spring 303. The limiting rings 304 are penetrated at both ends of the movable rod 301. The cleaning assembly 4 includes an insertion rod 401, a cone head 402, and a crushing cone 403. The insertion rod 401 is provided on the left side of the sliding rod 105, the cone head 402 is provided on the left side of the insertion rod 401, and the crushing cone 403 is provided on the left side of the cone head 402. The left ends of the gun handle 1 are provided with inwardly recessed circular grooves 103, the two ends of the gun handle 1 are provided with inwardly penetrating grooves, and the front of the gun handle 1 is provided with an inwardly recessed L-shaped groove. The inwardly recessed circular grooves 103 designed at the left ends of the gun handle 1, the inwardly penetrating grooves at both ends of the gun handle and the L-shaped groove on the front, these structural designs not only enhance the grip and stability of the gun handle 1, but also provide users with convenient disassembly and installation paths. The circular grooves 103 are tightly matched with the round buckles of the rubber cover 2 to ensure that the rubber cover 2 is firmly fixed and prevent liquid or gas leakage during cleaning. At the same time, these groove designs also simplify the maintenance process of the equipment, allowing users to easily replace or maintain the rubber cover 2 and other components, thereby improving the usability and maintenance efficiency of the equipment.

[0022] A connection groove 201 is provided inside the rubber cover 2, and round buckles 202 are provided at both ends of the right side of the rubber cover 2. The connection groove 201 and round buckle design inside the rubber cover 2 realize a tight connection between the rubber cover 2 and the gun handle 1. This connection method not only ensures the stability of the rubber cover 2, but also effectively prevents liquid or gas leakage during the cleaning process, thereby improving the sealing performance of the equipment. At the same time, the design of the connection groove 201 and round buckle 202 also provides a convenient disassembly and installation method. The user can complete the replacement or maintenance of the rubber cover 2 without using complex tools, thereby reducing maintenance costs and time costs.

[0023] The two ends of the two sets of movable rods 301 extend to and penetrate the two ends of the gun handle 1, and the movable rods 301 penetrate the outer groove 104. The design of extending the two ends of the movable rods 301 to the two ends of the gun handle 1 and penetrating the outer groove enables the movable component 3 to flexibly respond to external pressure and realize automatic cleaning function. When blockage occurs inside the spray gun, the movable rods 301 can move automatically to drive the cleaning component 4 to perform cleaning work without manual intervention. This design not only improves the cleaning efficiency, but also reduces the difficulty of operation, allowing users to complete cleaning tasks more easily.

[0024] The left end of the compression spring 303 is fixedly connected to the connecting rod 302, the right end of the compression spring 303 is fixedly connected to the right end of the outer groove 104, the left end of the compression spring 303 is fixedly connected to the connecting rod, and the right end is fixedly connected to the right end of the outer groove. The design provides stable elastic support for the movable component 3. When the inside of the spray gun is blocked, the compression spring 303 can automatically push the movable rod 301 and the cleaning component 4 to clean up, ensuring that the inside of the spray gun is unobstructed. This design not only improves the self-cleaning ability of the equipment, but also extends the service life of the equipment and reduces the maintenance cost caused by blockage.

[0025] A grip 5 is provided on the right side of the gun handle 1, and an anti-slip cover 501 is provided around the outer side of the grip 5. Inwardly recessed annular grooves are provided on both sides of the outer side of the grip 5 away from the anti-slip cover 501. The anti-slip cover 501 surrounding the outer side of the grip 5 provides a comfortable holding feeling and effectively prevents accidents caused by hand slipping during the cleaning process of the operator. At the same time, the annular groove design on the outer side of the grip 5 provides a convenient holding position for the user, so that the operator can maintain a stable holding posture even during long-term use, reducing the difficulty of operation and labor intensity.

[0026] Swivel rings 502 are slidably provided in the annular grooves on both sides of the outer side of the handle 5, and two groups of protective handles 503 are provided on the outer side of the swivel ring 502. The two groups of protective handles 503 adopt a nested structure. The design of the swivel ring on the outer side of the handle 5 and the nested structure of the protective handle 503 allows the operator to freely adjust the holding posture according to the size and comfort of the personal hand. This design not only improves the usability of the equipment, but also enables the operator to complete the work more easily and comfortably during the cleaning process. At the same time, the nested structure of the protective handle 503 also increases the stability of the handle, preventing accidents caused by loose handles during operation.

[0027] A connecting pipe 6 is provided on the right side of the handle 5, and an inwardly recessed L-shaped groove is provided on the inner side of the right side of the connecting pipe 6. The connecting pipe 6 provided on the right side of the handle 5 and the L-shaped groove on the inner side of the connecting pipe 6 provide a stable connection path for the hose 7. This design not only simplifies the structure of the device, but also improves the stability and durability of the hose 7. At the same time, the design of the L-shaped groove also facilitates the user to connect the hose to the external water source transmission equipment, reducing the connection difficulty and time cost.

[0028] A hose 7 is provided on the right side of the connecting pipe 6 through an L-shaped groove, and the other end of the hose 7 is connected to an external water source transmission device. The design of the hose 7 provided on the right side of the connecting pipe 6 through the L-shaped groove realizes a convenient connection between the spray gun and the external water source transmission device. This connection method not only improves the flexibility of the equipment, but also allows users to complete cleaning tasks more easily. At the same time, the design of the hose 7 also allows the spray gun to move within a certain range during the cleaning process, improving the flexibility and efficiency of the cleaning operation. The connection with the external water source transmission device ensures that the spray gun can continue to obtain a stable water supply during the cleaning process, thereby improving the cleaning effect and quality.

[0029] Working principle: First of all, the main chamber 101 of the spray gun plays a vital role in the entire cleaning system. As a core component, it is specially used to contain and efficiently transmit the liquid or gas required for cleaning. Its internal structure has been carefully designed to ensure that the fluid can pass stably and smoothly, providing continuous and powerful power support for cleaning operations. Slots 103 are cleverly set at both ends of the left side of the gun handle 1. These slots are not just simple structural designs. They play a key role in enhancing the overall structural stability of the spray gun, allowing the gun handle to withstand greater external forces without deformation or damage. At the same time, the slots 103 also provide an extremely convenient and stable interface for the installation of the rubber cover 2, so that the rubber cover 2 can be accurately combined with the gun handle 1 to form a closely coordinated whole. The rubber cover 2 is tightly connected to the gun handle 1 through the carefully designed connecting grooves 201 and round buckles 202 on its inner side. The locking mechanism formed by the connecting grooves 201 and round buckles 202 is highly reliable. This design enables the rubber cover 2 to be firmly fixed to the gun handle 1. In particular, even during long-term, high-intensity cleaning operations, it is not easy to fall off or loosen. This stable structural design is an important basis for ensuring the cleaning effect, because only when the rubber cover 2 is always kept in the correct position can it effectively prevent the leakage of cleaning liquid or gas, ensure that it can accurately act on the cleaning area, and thus achieve efficient and thorough cleaning. At the same time, the close-fitting design of the connecting groove 201 and the round buckle 202 can ensure that the connection between the rubber cover 2 and the gun handle 1 is tight, forming a reliable sealing line of defense, effectively preventing the leakage of liquid or gas during the cleaning process. This excellent sealing performance is crucial to maintaining the normal working state of the spray gun and extending its service life. It avoids problems such as damage to the internal components of the spray gun and reduced cleaning effect caused by leakage, thereby ensuring the long-term and stable operation of the spray gun. Moreover, the rubber cover 2 also has an excellent buffering function. When the gun head accidentally collides with hard objects, obstacles, etc. in the external environment during the cleaning process, the rubber cover 2 It can effectively absorb and disperse the impact force by virtue of its own elastic material properties, thereby protecting the gun head from damage caused by direct impact, greatly reducing the risk of damage to the spray gun due to collision, and improving its reliability and durability in complex working environments. The movable component 3 is an exquisite and complex part of the spray gun, which consists of a movable rod 301, a connecting rod 302, a compression spring 303 and a limit ring 304. When the operator holds the handle 5 and slides inward, a series of exquisite mechanical linkage reactions will be triggered. The sliding rod 105 will slide smoothly in the outer groove 104, thereby driving the movable rod 301 to move accordingly. The movable rod 301 is closely connected to the compression spring 303 through the connecting rod 302. When the sliding rod 105 moves,The compression spring 303 will be compressed or released accordingly, thereby cleverly storing or releasing energy. In this process, the limit ring 304 plays a vital role. It accurately limits the movement range of the movable rod 301 to prevent it from being damaged or out of control due to excessive movement, ensuring the stability and safety of the entire movable component 3 and the spray gun structure. This design allows the spray gun to operate more smoothly and reliably during operation, providing the operator with a safer and more efficient use experience. With the movement of the movable component 3, the cleaning component 4 begins to play its unique role. The cleaning component 4 consists of an insert rod 401, a cone head 402 and a crushing cone 403. When the sliding rod 105 moves to the far left, the cone head 402 and the crushing cone 403, with their special shape and high-quality material properties, can strongly impact and crush possible blockages inside the spray gun. The sharp design of the cone head 402 can easily penetrate the hard shell of the blockage, while the crushing cone 403 The unique structure and sharp edges of the cleaning component 4 are used to break down the blockage into smaller particles, which are then thoroughly flushed clean by the powerful flushing action of the high-pressure water flow or air flow inside the spray gun, thereby effectively cleaning the internal channels of the spray gun and restoring it to its normal working state. The design of the cleaning component 4 greatly improves the self-cleaning ability and maintenance convenience of the spray gun, reduces spray gun failures caused by blockages, extends the service life of the spray gun, and also improves the efficiency and quality of cleaning operations. In addition, the handle 5 not only excels in ergonomic design, providing the operator with a comfortable holding experience, but also further enhances the operator's stability during use through the carefully designed anti-slip sleeve 501. The swivel 502 and protective handle 503 structures on the outside of the handle 5 provide the operator with more personalized operation options. The operator can flexibly adjust the holding posture according to his or her hand size and personal comfort, so as to find the operation method that suits him or her best, further improving the convenience and comfort of use. At the same time, the swivel 502 The sliding design also provides the operator with additional control options. For example, during the cleaning process, the operator can easily adjust the spray angle or force of the spray gun by turning the swivel 502 to adapt to different cleaning scenarios and needs, making the operation of the spray gun more flexible and accurate, greatly improving the effect and efficiency of the cleaning operation. Finally, the connecting pipe 6 and the hose 7 are external connection parts of the spray gun, each of which has important responsibilities. The connecting pipe 6 is responsible for stably and efficiently transmitting the external water source or gas to the inside of the spray gun. Its internal channel has been optimized to ensure smooth transmission of the fluid and reduce energy loss and pressure fluctuations. The hose 7, with its excellent flexibility and flexibility, provides a more convenient connection method for the spray gun. The other end of the hose 7 is tightly connected to the external water source transmission equipment.This ensures that the spray gun can obtain a continuous and stable supply of liquid or gas. This design not only significantly improves the scope of application and flexibility of the spray gun, allowing the spray gun to be easily used in various complex working environments, but also greatly improves the efficiency and convenience of cleaning operations, bringing users a more efficient and convenient cleaning experience and meeting cleaning needs in different scenarios.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A handheld self-cleaning spray gun, comprising a gun handle (1), a movable component (3) and a cleaning component (4), characterized in that: A main cavity (101) is provided on the right side of the gun handle (1), a side cavity (102) is provided on the left side of the gun handle (1), a clamping groove (103) is provided at both ends of the left side of the gun handle (1), an outer groove (104) is provided around the outside of the gun handle (1) away from the main cavity (101), a rubber cover (2) is provided on the left side of the gun handle (1), a sliding rod (105) is provided inside the gun handle (1), movable components (3) are provided at both ends of the sliding rod (105), and a cleaning component (4) is provided on the left side of the sliding rod (105); The movable assembly (3) comprises a movable rod (301), a connecting rod (302), a compression spring (303), and a limiting ring (304); both ends of the sliding rod (105) are provided with movable rods (301); the right side of the movable rod (301) is provided with a connecting rod (302); the right side of the connecting rod (302) is provided with a compression spring (303); and limiting rings (304) are provided through both ends of the movable rod (301); The cleaning assembly (4) comprises an insertion rod (401), a cone head (402), and a crushing cone (403); the insertion rod (401) is provided on the left side of the sliding rod (105); the cone head (402) is provided on the left side of the insertion rod (401); and the crushing cone (403) is provided on the left side of the cone head (402).

2. A handheld self-cleaning spray gun according to claim 1, characterized in that: The left ends of the gun handle (1) are provided with inwardly recessed circular slots (103), the two ends of the gun handle (1) are provided with inwardly penetrating grooves, and the front of the gun handle (1) is provided with an inwardly recessed L-shaped groove.

3. A handheld self-cleaning spray gun according to claim 1, characterized in that: A connecting groove (201) is provided on the inner side of the rubber cover (2), and round buckles (202) are provided on both ends of the right side of the rubber cover (2).

4. A handheld self-cleaning spray gun according to claim 1, characterized in that: The two ends of the two groups of movable rods (301) extend toward and penetrate the two ends of the gun handle (1), and the movable rods (301) penetrate the outer groove (104).

5. A handheld self-cleaning spray gun according to claim 1, characterized in that: A left end of the compression spring (303) is fixedly connected to the connecting rod (302), and a right end of the compression spring (303) is fixedly connected to a right end of the outer groove (104).

6. A handheld self-cleaning spray gun according to claim 1, characterized in that: A grip (5) is provided on the right side of the gun handle (1), an anti-slip sleeve (501) is provided around the outer side of the grip (5), and inwardly recessed annular grooves are provided on both sides of the outer side of the grip (5) away from the anti-slip sleeve (501).

7. A handheld self-cleaning spray gun according to claim 6, characterized in that: A rotating ring (502) is slidably provided in the annular grooves on both sides of the outer side of the handle (5), and two groups of protective handles (503) are provided on the outer side of the rotating ring (502), and the two groups of protective handles (503) adopt a nested structure.

8. A handheld self-cleaning spray gun according to claim 1, characterized in that: A connecting pipe (6) is provided on the right side of the handle (5), and an inwardly recessed L-shaped groove is provided on the inner side of the right side of the connecting pipe (6).

9. A handheld self-cleaning spray gun according to claim 8, characterized in that: A hose (7) is provided on the right side of the connecting pipe (6) via an L-shaped groove, and the other end of the hose (7) is connected to an external water source transmission device.

Images