Described herein is a technique capable of properly attaching a nozzle to a reaction tube. According to one aspect thereof, there is provided a nozzle installation jig including: a lower plate configured to make contact with a process vessel in a vicinity of a lower end opening of the process vessel in which a nozzle is provided; a frame fixed to the lower plate and extending upward with respect to the lower plate; an upper plate fixed to the frame and provided with a sensor configured to detect a position of the nozzle in the process vessel; and a notification device configured to transmit a notification to an operator according to a detection result of the sensor.

An overhead shower connector structure includes an overhead shower connector, a connecting rod assembly, and a bracket. The bracket is connected with the overhead shower connector through the connecting rod assembly. The overhead shower connector is configured to connect with the overhead shower. The bracket is configured to hold a hand shower. After installing the overhead shower connector, the bracket can be installed together, and there is no need to install the bracket separately. There is no need to fix the bracket to the wall, so that the overhead shower connector structure can facilitate the installation of the bracket and improve the installation efficiency. The overall structure of is simple.

An overhead shower connector structure includes an overhead shower connector, a connecting rod assembly, and a bracket. The bracket is connected with the overhead shower connector through the connecting rod assembly. The overhead shower connector is configured to connect with the overhead shower. The bracket is configured to hold a hand shower. After installing the overhead shower connector, the bracket can be installed together, and there is no need to install the bracket separately. There is no need to fix the bracket to the wall, so that the overhead shower connector structure can facilitate the installation of the bracket and improve the installation efficiency. The overall structure of is simple.

A wastewater spray distribution apparatus is operative to distribute wastewater produced by a sewage treatment system (10) onto a ground level (22) through operation of sprayers (118, 260). The exemplary sprayers include a manifold (142, 262) that includes outlet nozzles (158, 264) that can be readily removed and replaced. The exemplary manifold further includes interior areas bounded by surfaces that slope continuously downward from the outlet nozzles to the manifold inlet to assure the draining of water therefrom. Each of the nozzles include a base (140) which includes brake (207). A brake is provided in each nozzle and is adjustable to provide brake force to limit rotational movement produced by the thrust of water passing from the outlet nozzles to assure that the sprayer operates at the appropriate rotational speed. Alternative arrangements include manifolds including fixed or adjustable flaps and radially outwardly adjustable arms to adjust rotational properties.

Described herein is an atomizer changing system, including a master unit and at least one slave unit, where the master unit has at least the following components: a releasable connecting element, surrounding a center of the master unit, for a nonpositive and positive connection (KS, FS) of the master unit to the slave unit, a coupling plate arranged in the center of the master unit and having a plurality of coupling points for supplying an atomizer that can be connected thereto with substances, energy and/or information, and an adapter for connecting the master unit to a hollow wrist of a coating robot; and where the slave unit has at least the following components: a coupling plate for connecting the slave unit to the master unit and to the atomizer; and a releasable connecting element for connecting the slave unit to the atomizer.

Described herein is an atomizer changing system, including a master unit and at least one slave unit, where the master unit has at least the following components: a releasable connecting element, surrounding a center of the master unit, for a nonpositive and positive connection (KS, FS) of the master unit to the slave unit, a coupling plate arranged in the center of the master unit and having a plurality of coupling points for supplying an atomizer that can be connected thereto with substances, energy and/or information, and an adapter for connecting the master unit to a hollow wrist of a coating robot; and where the slave unit has at least the following components: a coupling plate for connecting the slave unit to the master unit and to the atomizer; and a releasable connecting element for connecting the slave unit to the atomizer.

A system and method for dermal spraying includes a portable, hand-held dermal application device with one or more disposable cartridges that spray a dermal formulation onto the skin, the disposable cartridge having a nozzle that can be activated by placing the cartridge into the spray device.

A coupler, adapted for being assembled and connected with a water sprayer, includes a sleeve and a coupling member adapted for being assembled and connected with the water sprayer. The coupling member and the sleeve are sleeved with each other and respectively have a first corresponding end and a second corresponding end which correspond to each other. The first corresponding end and the second corresponding end are adapted to be engaged with each other, so that the sleeve and the coupling member are capable of being mutually locked and into a non-rotatable state through the engagement and rotation meshing operation. The sleeve can be disengaged with the coupling member through axially moving the sleeve so that the sleeve is allowed to be axially rotatable.

The present invention is directed to an electrostatic sprayer for applying disinfectants, agricultural production, pesticides, and other chemicals and liquid solutions. The electrostatic sprayer may be used for indoor and outdoor applications. The electrostatic sprayer provides a solution tank for holding a treatment solution, a base for holding and protecting the mechanical and electrical components, including a power supply, solution pump, and electrostatic generator, of the electrostatic sprayer, a supply hose, and a spray wand. The solution tank further includes input and exit filters to remove particles that may damage the solution pump of clog the spray wand. The spray wand includes spray nozzles with backflow valves and metering disks to control the flow of the treatment solution and close the valve when the treatment solution is not sufficiently pressurized to pass through the backflow valve to prevent leak when not in use. An electrostatic switch is also provided for selectively powering on the electrostatic generator. The electrostatic generator provides a positive charge to an electrode in the solution tank and a negative charge to a grounding strip in the handle of the spray wand providing a negative pathway through Earth to the objects being treated enhancing the electrical attraction of the treatment solution to those items. A grounding strap is also provided to be worn by the user to reduce the resistance in the path between the grounding strip and Earth by bypassing some of the user's clothing and protective gear that may provide resistance to the path.