Hidden passive telescopic nozzle

Abstract

The invention discloses a concealed passive telescopic nozzle. The concealed passive telescopic nozzle is mounted on a mounting surface; the shell is fixedly connected with the mounting surface through a flange surface, the diameters of the head and the tail of the nozzle are larger than the diameter of the middle section, and the head of the nozzle is flush with the outer wall surface of the mounting surface in a non-working state; the baffle is divided into two pieces and is fixed on the shell through sunk screws; one end of the spring is matched with the spray head, and the other end of the spring is matched with the baffle; the rear cover is fixedly connected with the shell through a flange surface and surrounds the tail part of the spray head; a sealing ring is installed on the front end face of the tail of the sprayer, namely the end face, closer to the head, of the tail, and a preset distance is kept between the sealing ring and a shell surrounding the sprayer. The nozzle is easy to machine, small in size and high in concealment, automatically stretches out through jet flow pressure during cleaning and resets through an elastic mechanism after cleaning is completed.

Description

Technical Field

[0001] The invention belongs to the field of jet cleaning, and in particular relates to a concealed passive telescopic nozzle. Background Art

[0002] Integrated optoelectronic equipment usually contains multiple lenses and sensors. The surfaces of the lenses and sensors need to be kept clean during operation, otherwise it will affect the detection accuracy and may form local hot spots that damage the equipment. During long-term use, the surfaces of external sensors and lenses will inevitably be contaminated by pollutants such as dirt, dust, flying insects, rain and snow, and need to be cleaned by jet nozzles. Optoelectronic equipment requires that the jet nozzle cannot block its detection field of view, and has extremely high requirements for the size and concealment of the nozzle. The currently common telescopic nozzle drives the electric push rod to perform the telescopic action through the control system. It is large in size and complex in system, and is not suitable for miniaturized equipment and large-scale use. Summary of the invention

[0003] The main purpose of the present invention is to solve the cleaning problem of integrated optoelectronic equipment and to provide a concealed passive telescopic nozzle which is completely concealed in a non-working state and substantially concealed in a working state.

[0004] The technical solution adopted by the present invention is: a concealed passive telescopic nozzle, which is composed of a shell, a baffle, a nozzle, a rear cover, a sealing ring, and a spring. The concealed passive telescopic nozzle is installed on the installation surface; The shell is fixedly connected to the mounting surface through a flange surface. The shell is a hollow cylinder, the middle section of the nozzle is a hollow cylinder, and the tail section is a rounded rectangular cross-section shape. The nozzle is installed inside the shell, and one end for jet spraying, i.e., the head, protrudes from the shell, and the other end, i.e., the tail, also protrudes from the shell. The diameters of the head and tail of the nozzle are both larger than the diameter of the middle section. In a non-working state, the head of the nozzle is flush with the outer wall of the mounting surface. The baffle is divided into two pieces and fixed to the housing by countersunk screws; A spring is installed in the middle of the nozzle, one end of the spring cooperates with the nozzle, and the other end cooperates with the baffle; The rear cover is fixedly connected to the outer shell through a flange surface and surrounds the tail of the nozzle; A sealing ring is installed on the front end face of the tail of the nozzle, that is, the end face of the tail closer to the head, and the sealing ring maintains a predetermined distance from the shell surrounding the nozzle; The extension stroke limit of the nozzle is achieved by the contact between the sealing ring and the rear end face of the shell, that is, the end face close to the tail, and the retraction stroke limit is achieved by the contact between the rear end face of the nozzle head, that is, the end away from the jet, and the front end face of the baffle, that is, the end close to the jet.

[0005] Compared with the existing telescopic nozzle, the present invention has the following beneficial effects: no electric actuator and control system are required, the processing technology is simple, the cost is low, and the volume is small. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 This is the appearance picture of concealed passive telescopic nozzle.

[0007] Figure 2 This is a cross-sectional view of a concealed passive telescopic nozzle in a non-working state.

[0008] Figure 3 Schematic diagram of the jet in working state.

[0009] Figure 4 This is a cross-sectional view of the nozzle in working condition.

[0010] Reference numerals: housing 1, baffle 2, nozzle 3, rear cover 4, sealing ring 5, spring 6, mounting surface 7. DETAILED DESCRIPTION

[0011] In order to make the purpose and technical solution of the present invention more clear, the detection principle of the present invention is further described in detail below in conjunction with the embodiments.

[0012] First combine Figure 1 and Figure 2 The structure of the concealed passive telescopic nozzle is further described. The concealed passive telescopic nozzle is composed of a housing 1, a baffle 2, a nozzle 3, a rear cover 4, a sealing ring 5, and a spring 6. The nozzle is installed on a mounting surface 7; Among them, the shell 1 is fixedly connected to the mounting surface 7 through the flange surface. The shell 1 is a hollow cylinder, the middle section of the nozzle 3 is a hollow cylinder, and the tail is a rounded rectangular cross-section shape. The nozzle 3 is installed inside the shell 1, and the end for jet injection, that is, the head, protrudes from the shell 1, and the other end, that is, the tail, also protrudes from the shell 1, and the diameters of the head and tail of the nozzle 3 are both larger than the diameter of the middle section. After installation, the head of the nozzle 3 is flush with the outer wall of the mounting surface 7 in the non-working state, so as to be completely concealed. The baffle 2 is divided into two pieces and fixed to the shell 1 by countersunk screws. A spring 6 is installed in the middle section of the nozzle 3, one end of the spring 6 cooperates with the nozzle 3, and the other end cooperates with the baffle 2. The spring 6 can have a certain pre-pressure during installation and can be quickly reset after cleaning. The rear cover 4 is fixedly connected to the shell 1 through the flange surface and surrounds the tail of the nozzle 3. The front end face of the tail of the nozzle 3 (the front end face of the tail refers to the end face of the tail closer to the head) is equipped with a sealing ring 5, and the sealing ring 5 maintains a predetermined distance from the shell 1 surrounding the nozzle 3. The function of the sealing ring 5 is to prevent liquid leakage during cleaning. The extension stroke limit of the nozzle 3 is achieved by the contact between the sealing ring 5 and the rear end face of the shell 1 (the rear end face of the shell 1 refers to the end face of the shell 1 surrounding the nozzle 3 close to the tail), and the retraction stroke limit is achieved by the contact between the rear end face of the head of the nozzle 3 (the end of the head of the nozzle 3 away from the jet) and the front end face of the baffle 2 (the end of the baffle 2 close to the jet).

[0013] In one embodiment, the interior of the rear cover 4 may be a rounded rectangular cross section (or other non-circular cross sections), which is the same as the cross section of the tail of the nozzle 3, and plays an anti-rotation role. The tail interface of the rear cover 4 may be a pagoda head, which can be connected to a hose with a suitable inner diameter, and can be used with a clamp to further tighten the pipeline, or it can be changed to a threaded interface and connected to other joints or pipelines with sealing materials.

[0014] In one embodiment, the cylindrical surface of the nozzle 3 and the cylindrical surface of the housing 1 have the same diameter, and a clearance fit is used for guidance.

[0015] No electric actuator or control system is required. The nozzle is extended by the pressure of the jet itself during cleaning. Figure 3 As shown, after cleaning is completed, the nozzle is reset by the thrust of the spring.

[0016] The nozzle is installed on the side of the object to be cleaned, without blocking the object to be cleaned; when not in operation, the end of the nozzle is flush with the outer wall; when in operation, the nozzle only extends a very small head and cleans through lateral jets, such as Figure 4 shown.

[0017] In summary, the nozzle has the advantages of not requiring an electric actuator and control system, simple processing technology, low cost, small size, and strong concealment. The principle and feasibility of the invention have also been verified by experiments, and other similar principles and configurations are also considered to be within the protection scope of the present invention.

Claims

1. A concealed passive telescopic nozzle, characterized in that: It is composed of a housing (1), a baffle (2), a nozzle (3), a rear cover (4), a sealing ring (5), and a spring (6); the concealed passive telescopic nozzle is mounted on a mounting surface (7); The housing (1) is fixedly connected to the mounting surface (7) via a flange surface. The housing (1) is in the shape of a hollow cylinder. The middle section of the nozzle (3) is in the shape of a hollow cylinder, and the tail section is in the shape of a rounded rectangular cross section. The nozzle (3) is mounted inside the housing (1). One end for jetting, i.e., the head section, protrudes from the housing (1), and the other end, i.e., the tail section, also protrudes from the housing (1). The diameters of the head section and the tail section of the nozzle (3) are both larger than the diameter of the middle section. In a non-operating state, the head section of the nozzle (3) is flush with the outer wall of the mounting surface (7). The baffle (2) is divided into two pieces and is fixed to the housing (1) by countersunk screws; A spring (6) is installed in the middle of the nozzle (3), one end of the spring (6) is matched with the nozzle (3), and the other end is matched with the baffle (2); The rear cover (4) is fixedly connected to the outer shell (1) via a flange surface and surrounds the rear end of the nozzle (3); A sealing ring (5) is installed on the front end face of the tail of the nozzle (3), i.e., the end face of the tail closer to the head, and the sealing ring (5) maintains a predetermined distance from the housing (1) surrounding the nozzle (3); The extension stroke limit of the nozzle (3) is achieved by the sealing ring (5) contacting with the rear end face of the housing (1), i.e., the end face close to the tail, and the retraction stroke limit is achieved by the rear end face of the nozzle head (3), i.e., the end away from the jet, contacting with the front end face of the baffle (2), i.e., the end close to the jet.

2. The concealed passive telescopic nozzle according to claim 1, characterized in that: The cylindrical surface of the nozzle (3) and the cylindrical surface of the housing (1) have the same diameter, and a clearance fit is used to guide the nozzle (3).

3. The concealed passive telescopic nozzle according to claim 1, characterized in that: The spring (6) has a certain pre-pressure when installed, and can be quickly reset after cleaning.

4. The concealed passive telescopic nozzle according to claim 1, characterized in that: The rear interface of the rear cover (4) is a pagoda head.

5. The concealed passive telescopic nozzle according to claim 1, characterized in that: The interior of the rear cover (4) is a rounded rectangular cross-section, which is the same as the cross-section of the tail of the nozzle (3).

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