CN111871630B

CN111871630B - Shower nozzle suitable for gardens spraying system

Info

Publication number: CN111871630B
Application number: CN202010728832.0A
Authority: CN
Inventors: 戴源
Original assignee: Hefei Jungang Machinery Technology Co ltd
Current assignee: HEFEI JUNGANG MACHINERY TECHNOLOGY Co.,Ltd.
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2021-11-02
Anticipated expiration: 2040-07-27
Also published as: CN111871630A

Abstract

The invention provides a spray head suitable for a garden spraying system, which comprises a spray head body provided with a plurality of spraying holes, wherein a spraying cavity is arranged in the spray head body, and the spray head is characterized in that: the upper end surface of the spraying cavity is connected with a mounting frame through a mounting rod, the mounting frame is connected with a spraying cavity cleaning device through an elastic piece, a tuning fork device is arranged at the lower end of the spraying cavity cleaning device, a driving device is connected to the lower end of the tuning fork device, and the driving device is electrically connected with a solar device; the spray head suitable for the garden spraying system provided by the invention has the advantages that the inner cavity is cleaned by the spray cavity cleaning device, the spray cavity is prevented from scaling, the service life of the spray cavity can be prolonged, and the arrangement of the pesticide adding device is favorable for enabling sprayed liquid to contain pesticide or nutrient solution, so that the flower and grass can be maintained conveniently.

Description

Shower nozzle suitable for gardens spraying system

Technical Field

The invention belongs to the technical field of solar energy and garden tools, and particularly relates to a spray head suitable for a garden spraying system.

Background

Gardens shower nozzle is one of the indispensable instrument of modern gardens maintenance in-process, and the quality direct influence of shower nozzle sprays the life of effect and shower nozzle, and gardens shower nozzle function singleness among the prior art, and inside does not have corresponding cleaning measure, and the incrustation scale easily ties on the shower nozzle inner wall, influences the life of shower nozzle, consequently, is worth us research to the improvement of shower nozzle.

For example, chinese patent document discloses a garden spray head, [ application number: 201820409749.5, comprises a main body and a fixed seat, wherein the fixed seat is arranged at the bottom end of the main body, the fixed seat is fixedly connected with the main body, a spray device is arranged at the middle part of the main body, the spray device is fixedly connected with the main body, a spray hole is arranged at the middle part of the spray device, the spray hole is connected with the spray device in a penetrating way, a fixed leg is arranged at the top end of the spray device, the fixed leg is fixedly connected with the spray device, the main body shell of the garden spray head is made of stainless steel, the stainless steel does not contain lead, is acid and alkali resistant and is not easy to corrode, the hardness and the toughness of the garden spray head are more than two times higher than those of a copper spray head, the service life of the garden spray head is prolonged, this kind of ceramic case shower nozzle that spray set of gardens shower nozzle adopted compares other materials with the shower nozzle of ceramic preparation, has advantages such as not rust, not oxidation, difficult wearing and tearing, and the outward appearance is generous, sets off the high-end atmosphere sense in whole space.

A gardens shower nozzle among the above-mentioned scheme, although adopt the stainless steel preparation, can improve life to a certain extent, nevertheless the inside scale deposit problem of shower nozzle can't be solved, and the shower nozzle function singleness can't satisfy the practical application demand.

Disclosure of Invention

The invention aims to solve the problems, and provides a spray head suitable for a garden spraying system, wherein a spray cavity cleaning device is used for cleaning an inner cavity, so that scaling of the spray cavity is avoided, the service life of the spray cavity can be prolonged, and the arrangement of a pesticide adding device is beneficial to ensuring that sprayed liquid is provided with liquid medicine or nutrient solution, so that flower and grass maintenance is facilitated.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a shower nozzle suitable for gardens spraying system, is including being equipped with a plurality of shower nozzle bodies that spray the hole, this internal spraying cavity that is equipped with of shower nozzle, its characterized in that: the upper end surface of the spraying cavity is connected with a mounting frame through a mounting rod, the mounting frame is connected with a spraying cavity cleaning device through an elastic piece, the spraying cavity cleaning device is hinged to the mounting rod, a tuning fork device is arranged at the lower end of the spraying cavity cleaning device, a driving device is connected to the lower end of the tuning fork device and mounted on the mounting frame, and the driving device is electrically connected with a solar device; the installation pole on still install and remove worm medicine and add the device, worm medicine add the device lower extreme and be equipped with the feed liquor pipe, just the feed liquor pipe with mounting bracket fixed connection.

Preferably, the spray cavity cleaning device comprises a disc hinged on the mounting rod, a plurality of grooves are formed in the lower end face of the disc, and a plurality of flow guide fans are hinged in the grooves; the disc outer circular surface is fixedly provided with a first cleaning piece, and the disc is also provided with a notch.

Preferably, the tuning fork device comprises a tuning fork plate arranged under the notch, the tuning fork plate is fixedly arranged on the cavity wall of the spraying cavity, a sound tube is arranged on one side of the tuning fork plate, a plurality of salient points are arranged on the sound tube, and the sound tube is fixedly arranged on the rotating shaft.

Preferably, the driving device comprises a driving wheel fixedly installed on the rotating shaft, the rotating shaft is connected with the motor, a driven wheel is arranged on one side of the driving wheel, the driven wheel is installed in a sliding groove, the sliding groove is formed in the mounting frame, and a plurality of liquid inlet pipe cleaning assemblies are arranged at the lower end of the driven wheel.

Preferably, the liquid inlet pipe cleaning assembly comprises a fixing rod fixedly mounted on the lower end face of the driven wheel, the fixing rod rotates along a guide rail arranged on the sliding groove, a second cleaning piece is arranged on the fixing rod, a scraping plate attached to the wall face of the liquid inlet pipe is arranged at the front end of the second cleaning piece, and an arc face is arranged on the scraping plate.

Preferably, the solar device comprises a storage battery electrically connected with the motor, the storage battery is electrically connected with a charge and discharge controller, the charge and discharge controller is electrically connected with a photovoltaic cell, and the photovoltaic cell is fixedly installed on the upper end face of the spray head body.

As preferred, deinsectization medicine add device include fixed mounting in the erection column upper end add the pencil, just add pencil upper end be equipped with the screwed pipe, the screwed pipe on install and add the medicine subassembly, add the medicine subassembly lower extreme be equipped with first toper pipe, just first toper pipe top-down diameter between the increase, first toper pipe lower extreme be equipped with the medicine and mix the storehouse, the medicine mix the storehouse periphery and be equipped with a plurality of through-holes, the medicine mix the storehouse lower extreme and be equipped with the pressurization subassembly.

Preferably, the dosing assembly comprises a threaded rod matched with the threaded pipe, the lower end of the threaded rod is connected with a blocking ball through a spring, and the diameter of the blocking ball is larger than that of the dosing pipe; the middle of the threaded rod is also provided with a dosing hole, a piston rod is arranged in the dosing hole, and the front end of the piston rod is provided with a rubber layer.

Preferably, the pressurizing assembly comprises a sieve plate arranged right below the medicine mixing bin, the lower end of the sieve plate flushes the bin, a pressurizing pipe is arranged at the lower end of the flushing bin, a second conical pipe is arranged at the lower end of the pressurizing pipe, and the diameter of the second conical pipe is increased from top to bottom.

Compared with the prior art, the invention has the advantages that:

1. the spray cavity cleaning device provided by the invention moves up and down under the action of the pressure of water flow of the liquid inlet pipe and the action of the elastic part, so that the first cleaning part brushes the cavity wall of the spray cavity, the scale formation in the spray cavity can be avoided, and the service life of the spray head can be prolonged.

2. According to the invention, the tuning fork plate of the tuning fork device is matched with the sound barrel, so that the tuning fork device can play music to increase the interestingness of the spray head, and the tuning fork plate vibrates to drive water in the spray cavity to vibrate, so that liquid medicine mixing is facilitated, the kinetic energy of the water is increased, and the spraying effect is better.

3. The driving device adopts the solar device to supply power, so that the energy is saved, and the driving device drives the tuning fork device to rotate and simultaneously drives the liquid inlet pipe cleaning component to synchronously rotate, so that the liquid inlet pipe is cleaned, and the service life of the liquid inlet pipe is prolonged.

4. Compared with the prior art, the device is matched with the water pipe for use, so that the medicine is added more conveniently, and the processes of independently mixing and spraying the medicine are saved.

Drawings

Fig. 1 is a structural diagram of a spray head suitable for a garden spray system provided by the invention.

Fig. 2 is a partial sectional view (front view) of a spray head suitable for use in a garden spray system according to the present invention.

Fig. 3 is a sectional view of a plane a-a of a spray head suitable for a garden spray system provided by the invention.

Fig. 4 is an enlarged view of the position D provided by the present invention.

Fig. 5 is a structural view of a spray chamber cleaning apparatus provided by the present invention.

In the figure, a nozzle body 1, a spraying hole 11, a spraying cavity 12, a mounting rod 13, a mounting rack 14, a liquid inlet pipe 15, an elastic piece T, a spraying cavity cleaning device 2, a disc 21, a groove 22, a flow guide fan 23, a first cleaning piece 24, a notch 25, a tuning fork device 3, a tuning fork plate 31, a sound tube 32, a salient point 33, a rotating shaft 34, a driving device 4, a driving wheel 41, a motor 42, a driven wheel 43, a sliding chute 44, a liquid inlet pipe cleaning component Q, a fixing rod Q1, a guide rail Q2, a second cleaning piece Q3, a scraping plate Q4, an arc surface Q5, a solar device 5, a storage battery 51, a charge and discharge controller 52, a photovoltaic battery 53, an insecticide adding device 6, an insecticide adding pipe 61, a threaded pipe 62, a first conical pipe 63, a medicine mixing bin 64, a through hole 65, a medicine adding component Y, a threaded rod Y1, a spring Y2, a blocking ball Y3, a medicine adding hole Y4, a piston rod Y5, a rubber layer Y6, a pressurizing component J, a sieve plate J1, a screen plate J52, a medicine adding device J, a medicine adding device Y3, a medicine adding device Y4, a medicine adding device, a motor, a flushing bin J2, a pressurizing pipe J3 and a second conical pipe J4.

Detailed Description

As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, a nozzle suitable for garden spraying system, including being equipped with a plurality of shower nozzle bodies 1 that spray hole 11, be equipped with in the shower nozzle body 1 and spout chamber 12, its characterized in that: the upper end face of the spraying cavity 12 is connected with a mounting frame 14 through a mounting rod 13, the mounting frame 14 is connected with a spraying cavity cleaning device 2 through an elastic piece T, the spraying cavity cleaning device 2 is hinged to the mounting rod 13, a tuning fork device 3 is arranged at the lower end of the spraying cavity cleaning device 2, a driving device 4 is connected to the lower end of the tuning fork device 3, the driving device 4 is mounted on the mounting frame 14, and the driving device 4 is electrically connected with a solar device 5; still install on the installation pole 13 and remove worm medicine and add

device

6, 6 lower extremes of device are added to the worm medicine are equipped with feed liquor pipe 15, and

feed liquor pipe

15 and 14 fixed connection of mounting bracket, in this device, elastic component T can set up to the better elastic rubber post of elasticity, also can set up to the spring,

installation pole

13 and 14 fixed connection of mounting bracket, mounting bracket 14 can set up to the star, also can set up to cross or straight-bar, can adopt a plurality of branch a to connect and form, be equipped with a plurality of apopores b on the mounting bracket 14, furthermore, elastic component T one end fixed mounting is on branch a, other end fixed mounting spouts 2 below in chamber cleaning device.

Specifically, the spray cavity cleaning device 2 comprises a disc 21 hinged on the mounting rod 13, a plurality of grooves 22 are formed in the lower end face of the disc 21, and a plurality of guide fans 23 are hinged in the grooves 22; disc 21 outer disc fixed mounting has first cleaning member 24, disc 21 still is equipped with notch 25, in this device, disc 21, water conservancy diversion fan 23 all can adopt the plastics of light to make, the rivers of being convenient for are washed up and are spouted chamber cleaning device 2, the in-process that gushes on the rivers can drive water conservancy diversion fan 23 and rotate, water conservancy diversion fan 23 can drive on the one hand and spout 12 interior rivers rotations in the chamber, thereby the liquid medicine of being convenient for fuses, on the other hand water conservancy diversion fan 23 rotates and can drive rivers from spraying hole 11 blowout, first cleaning member 24 can set up to rubber slab or brush.

Further say, tuning fork device 3 is including setting up tuning fork board 31 under notch 25, and tuning fork board 31 fixed mounting is on spouting the chamber wall of chamber 12, tuning fork board 31 one side is equipped with sound section of thick bamboo 32, and be equipped with a plurality of bumps 33 on the sound section of thick bamboo 32, sound section of thick bamboo 32 fixed mounting is on pivot 34, this device in tuning fork board 32 in vibrations process, can further drive spout the interior liquid vibration of chamber 12, be favorable to spouting the interior liquid fusion of chamber 12, the setting up of notch 25 makes tuning fork device 3 and spouts chamber cleaning device 2 not influence each other.

More specifically, the driving device 4 includes a driving wheel 41 fixedly mounted on the rotating shaft 34, the rotating shaft 34 is connected to the motor 42, a driven wheel 43 is disposed on one side of the driving wheel 41, the driven wheel 43 is mounted in a sliding groove 44, the sliding groove 44 is disposed in the mounting frame 14, a plurality of liquid inlet pipe cleaning assemblies Q are disposed at the lower end of the driven wheel 43, and a motor shaft of the rotating shaft 34 and the motor 42 in the device can be connected through a coupling.

Still further say, the clean subassembly Q of feed liquor pipe includes fixed mounting in the dead lever Q1 of follow driving wheel 43 lower extreme face, and dead lever Q1 rotates along the guide rail Q2 that sets up in spout 44, be equipped with second cleaning member Q3 on the dead lever Q1, second cleaning member Q3 front end is equipped with the scraper blade Q4 with the laminating of 15 wall surfaces of feed liquor pipe, be equipped with cambered surface Q5 on the scraper blade Q4, second cleaning member Q3 in this device can adopt the rubber slab to make, scraper blade Q4 and cambered surface Q5 be provided with and do benefit to the pipe wall and clean.

Specifically, the solar device 5 includes a storage battery 51 electrically connected to the motor 42, the storage battery 51 is electrically connected to a charge and discharge controller 52, the charge and discharge controller 52 is electrically connected to a photovoltaic cell 53, and the photovoltaic cell 53 is fixedly mounted on the upper end surface of the nozzle body 1.

Specifically speaking, deinsectization medicine is added device 6 and is included fixed mounting in the pencil 61 that adds of erection column 13 upper end, and adds the pencil 61 upper end and be equipped with screwed pipe 62, installs on the screwed pipe 62 and adds medicine subassembly Y, adds medicine subassembly Y lower extreme and is equipped with first conical duct 63, and increases between the first conical duct 63 top-down diameter, and first conical duct 63 lower extreme is equipped with medicine mixing bin 64, and medicine mixing bin 64 periphery is equipped with a plurality of through-holes 65, and medicine mixing bin 64 lower extreme is equipped with pressurization subassembly J.

Further, the dosing assembly Y comprises a threaded rod Y1 matched with the threaded tube 62, the lower end of the threaded rod Y1 is connected with a blocking ball Y3 through a spring Y2, and the diameter of the blocking ball Y3 is larger than that of the dosing tube 61; still be equipped with in the middle of the threaded rod Y1 and add medicine hole Y4, install piston rod Y5 in adding medicine hole Y4, piston rod Y5 front end is equipped with rubber layer Y6, spring Y2 and threaded rod Y1 fixed connection in this device, the position of accessible adjusting threaded tube 62's rotation depth regulation blocking ball Y3, be convenient for add medicine or nutrient solution on the one hand, on the other hand can increase spring Y2's life, piston rod Y5 and rubber layer Y6 cooperate the use, be convenient for pressurize blocking ball Y3 upper end position, be convenient for push up blocking ball Y3, make the medicine get into medicine mixing bin 64, blocking ball Y3's setting can be placed the liquid medicine backward flow and spout from the upper end, in addition, it is equipped with absorbent cotton c to add medicine hole Y4 upper end.

More specifically, the pressurizing assembly J comprises a sieve plate J1 arranged right below the medicine mixing bin 64, a flushing bin J2 at the lower end of the sieve plate J1, a pressurizing pipe J3 at the lower end of the flushing bin J2, a second conical pipe J4 at the lower end of the pressurizing pipe J3, and the diameter of the second conical pipe J4 is increased from top to bottom.

The working principle is as follows: the piston rod Y5 is pulled up, medicine powder or medicine liquid is added from the medicine adding hole Y4, the piston rod Y5 is installed again to pressurize and open the blocking ball Y3, so that the medicine powder or the medicine liquid falls onto the sieve plate J1, then an external water source is started, so that the water source enters the pressurizing pipe J3 from the second conical pipe J4 and then enters the flushing cabin J2 to flush the medicine powder on the sieve plate J1, so that the medicine powder flows into the spraying cavity 12 from the through hole 65 after being mixed in the medicine mixing cabin 64, meanwhile, the external water source penetrates through a water outlet hole b formed in the mounting frame 14 from the liquid inlet pipe 15 and then flows into the spraying cavity 12 to flush the disc 21, so that the first cleaning piece 24 brushes the inner wall of the spraying cavity 12 in the upward moving process of the disc 21, in addition, the water flow flushes the flow guiding fan 23, the flow guiding fan 23 drives the water in the spraying cavity 12 to rotate, the medicine liquid mixing in the spraying cavity 12 is promoted, and the flow guiding fan 23 can promote the water in the spraying cavity 12 to be sprayed out from the spraying hole 11; in addition, the photovoltaic cell 53 converts solar energy into electric energy, and stores the electric energy in the storage battery 51 through the charge-discharge controller 52, the storage battery 51 supplies power to the motor 42 to drive the sound tube 32 to rotate, further drives the sound fork plate 31 to be matched with the sound tube 32, drives the sound fork plate 31 to vibrate while playing music, further increases the kinetic energy of water, is convenient for spraying and mixing liquid medicine, and drives the driving wheel 41 to rotate while the motor 42 rotates, further drives the driven wheel 43 to rotate, so that the fixing rod Q1 fixed on the driven wheel 43 synchronously rotates, and the scraper Q4 at the front end of the second cleaning piece Q3 rotates to clean the inner wall of the liquid inlet pipe 15; when the device is not supplied with water, the disc 21 is restored to the starting position by the elastic member T.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Although the nozzle body 1, the spray hole 11, the spray chamber 12, the mounting rod 13, the mounting bracket 14, the liquid inlet pipe 15, the elastic member T, the spray chamber cleaning device 2, the disk 21, the groove 22, the guide fan 23, the first cleaning member 24, the notch 25, the tuning fork device 3, the tuning fork plate 31, the sound tube 32, the convex point 33, the rotation shaft 34, the driving device 4, the driving wheel 41, the motor 42, the driven wheel 43, the chute 44, the liquid inlet pipe cleaning assembly Q, the fixing rod Q1, the guide rail Q2, the second cleaning member Q3, the scraper Q4, the arc Q5, the solar device 5, the storage battery 51, the charge and discharge controller 52, the photovoltaic battery 53, the insecticide adding device 6, the insecticide adding pipe 61, the threaded pipe 62, the first tapered pipe 63, the medicine mixing chamber 64, the through hole 65, the medicine adding assembly Y, the threaded rod Y1, the spring Y2, the blocking ball Y3, the medicine adding hole Y4, the piston rod Y5, the rubber layer Y6, the pressurizing assembly J, and the pressurizing assembly J are more used herein Screen J1, flush bin J2, pressure tube J3, second tapered tube J4, etc., but does not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention and they are to be interpreted as any additional limitation which is not in accordance with the spirit of the present invention.

Claims

1. The utility model provides a shower nozzle suitable for gardens spraying system, is including being equipped with a plurality of shower nozzle bodies (1) that spray hole (11), shower nozzle body (1) in be equipped with and spout chamber (12), its characterized in that: the spraying device is characterized in that the upper end surface of the spraying cavity (12) is connected with a mounting frame (14) through a mounting rod (13), the mounting frame (14) is connected with a spraying cavity cleaning device (2) through an elastic piece (T), the spraying cavity cleaning device (2) is hinged to the mounting rod (13), a tuning fork device (3) is arranged at the lower end of the spraying cavity cleaning device (2), the lower end of the tuning fork device (3) is connected with a driving device (4), the driving device (4) is mounted on the mounting frame (14), and the driving device (4) is electrically connected with a solar device (5); the installation pole (13) on still install and remove worm medicine and add device (6), worm medicine add device (6) lower extreme be equipped with feed liquor pipe (15), just feed liquor pipe (15) with mounting bracket (14) fixed connection.

2. The spray head suitable for gardens spraying system of claim 1, characterized in that: the spray cavity cleaning device (2) comprises a disc (21) hinged on the mounting rod (13), a plurality of grooves (22) are formed in the lower end face of the disc (21), and a plurality of flow guide fans (23) are hinged in the grooves (22); the disc cleaning device is characterized in that a first cleaning piece (24) is fixedly arranged on the outer circular surface of the disc (21), and a notch (25) is formed in the disc (21).

3. The spray head suitable for gardens spraying system according to claim 2, characterized in that: tuning fork device (3) including set up in tuning fork board (31) under notch (25), just tuning fork board (31) fixed mounting in the chamber wall of spouting chamber (12) on, tuning fork board (31) one side be equipped with sound section of thick bamboo (32), just sound section of thick bamboo (32) on be equipped with a plurality of bumps (33), sound section of thick bamboo (32) fixed mounting on pivot (34).

4. The spray head suitable for gardens spraying system of claim 3, characterized in that: drive arrangement (4) including fixed mounting in pivot (34) on drive wheel (41), just pivot (34) link to each other with motor (42), drive wheel (41) one side be equipped with from driving wheel (43), from driving wheel (43) install in spout (44), just spout (44) set up in mounting bracket (14) in, from driving wheel (43) lower extreme be equipped with the clean subassembly of a plurality of feed liquor pipes (Q).

5. The spray head suitable for gardens spraying system of claim 4, characterized in that: feed liquor pipe cleaning assembly (Q) including fixed mounting in follow dead lever (Q1) of terminal surface under driving wheel (43), just dead lever (Q1) along set up in guide rail (Q2) of spout (44) rotate, dead lever (Q1) on be equipped with second cleaning member (Q3), second cleaning member (Q3) front end be equipped with feed liquor pipe (15) wall laminating scraper blade (Q4), scraper blade (Q4) on be equipped with cambered surface (Q5).

6. The spray head suitable for gardens spraying system of claim 4, characterized in that: solar device (5) including with motor (42) electric connection's savings battery (51), savings battery (51) electric connection have charge-discharge controller (52), charge-discharge controller (52) electric connection have photovoltaic cell (53), just photovoltaic cell (53) fixed mounting in shower nozzle body (1) up end.

7. The spray head suitable for gardens spraying system of claim 1, characterized in that: deinsectization medicine adding device (6) including fixed mounting in installation pole (13) upper end add pencil (61), just add pencil (61) upper end and be equipped with screwed pipe (62), screwed pipe (62) on install and add medicine subassembly (Y), add medicine subassembly (Y) lower extreme be equipped with first toper pipe (63), just first toper pipe (63) top-down diameter between increase, first toper pipe (63) lower extreme be equipped with medicine and mix storehouse (64), medicine mix storehouse (64) periphery and be equipped with a plurality of through-holes (65), medicine mix storehouse (64) lower extreme and be equipped with pressurization subassembly (J).

8. The spray head of claim 7, wherein: the medicine adding assembly (Y) comprises a threaded rod (Y1) matched with the threaded pipe (62), the lower end of the threaded rod (Y1) is connected with a blocking ball (Y3) through a spring (Y2), and the diameter of the blocking ball (Y3) is larger than that of the medicine adding pipe (61); the middle of the threaded rod (Y1) is also provided with a dosing hole (Y4), a piston rod (Y5) is installed in the dosing hole (Y4), and the front end of the piston rod (Y5) is provided with a rubber layer (Y6).

9. The spray head of claim 7, wherein: pressurization subassembly (J) including set up in sieve (J1) under medicine mixing bin (64), sieve (J1) lower extreme wash out storehouse (J2), wash out storehouse (J2) lower extreme be equipped with pressurization pipe (J3), pressurization pipe (J3) lower extreme be equipped with second venturi tube (J4), just second venturi tube (J4) top-down increase between the diameter.