CN112741919A

CN112741919A - Spraying deodorization disinfecting equipment capable of improving environment

Info

Publication number: CN112741919A
Application number: CN202011455233.2A
Authority: CN
Inventors: 王永强; 杨勇
Original assignee: Shandong Dechang Environmental Technology Co ltd
Current assignee: Shandong Dechang Environmental Technology Co ltd
Priority date: 2020-12-10
Filing date: 2020-12-10
Publication date: 2021-05-04

Abstract

The invention discloses a spraying deodorization and disinfection device capable of improving environment, and relates to the technical field of spraying deodorization and disinfection devices. According to the invention, the stirring device is additionally arranged on the mixing box, the stirring motor of the stirring device can drive the stirring fan blades to rotate, the mixed liquid can be uniformly stirred in a short time, the mixed liquid is fully mixed, the manpower during stirring is saved, the stirring efficiency is improved, the stirring and mixing are more sufficient, and the cleaning spray head and the cleaning motor are additionally arranged, so that the waste of manpower resources is reduced, the time and the labor are saved, the rotatable spray head conversion device is additionally arranged, the spray head is prevented from being replaced in the using process, the time for replacing the spray head is saved, and the difficulty in replacing the spray head is simplified.

Description

Spraying deodorization disinfecting equipment capable of improving environment

Technical Field

The invention relates to a spraying deodorization and disinfection device, relates to the technical field of spraying deodorization and disinfection devices, and particularly relates to a spraying deodorization and disinfection device capable of improving the environment.

Background

The deodorization equipment is used for deodorizing and removing peculiar smell, is generally applied to factories, workshops, sewage stations, garbage plants and the like, has a simple structure, has the characteristics of low energy consumption, high purification efficiency, wide application range and the like, and is used for treating garbage recycling stations mostly by using spray deodorization and disinfection equipment at present. The following problems exist in the prior art:

1. the liquid medicine mixing tank needs to properly stir in the process of mixing tap water and liquid medicine, so that the mixing is more sufficient, the manual stirring mode is relatively slow, the stirring and mixing effects are not ideal, and the phenomenon of insufficient mixing is often accompanied;

2. the liquid medicine mixing box needs to be cleaned regularly in the using process, liquid medicine residues in the liquid medicine mixing box are washed away, the manual washing mode is time-consuming and labor-consuming, and liquid medicine in the liquid medicine mixing box inevitably adheres to the surface of the skin of a human body, so that the skin can be affected badly.

3. Traditional spraying nozzle is single shower nozzle, and the spraying of a form can only be accomplished to same water-spraying system, slice or taper, and special demand needs more smooth shower nozzle, and the change process is more loaded down with trivial details, wastes time and energy, and frequently changes the shower nozzle and can lead to the fact irreversible damage to the screw thread of shower nozzle junction, reduces the life of shower nozzle.

Disclosure of Invention

The invention provides a spraying deodorization and disinfection device capable of improving the environment, which aims to have the capability of automatic stirring and solve the problem of insufficient manual stirring; the other purpose is to solve the problem of manual cleaning so as to achieve the effect of automatic cleaning, and the other purpose is to provide a multi-nozzle free switching mechanism, facilitate the replacement of different types of spraying modes, and solve the problems of single spraying shape and easy damage of the nozzle threads.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

the utility model provides an improve spraying deodorization disinfecting equipment of environment, includes box and spraying booster pump, the spraying booster pump is installed in the inside lower surface of box, spraying booster pump right-hand member water inlet fixedly connected with liquid medicine mixing arrangement, liquid medicine mixing arrangement right side fixedly connected with belt cleaning device, spraying booster pump left end outlet end fixedly connected with spraying system.

The technical scheme of the invention is further improved as follows: the cleaning device comprises a cleaning booster pump, a cleaning water spraying device is fixedly connected to the left end of the cleaning booster pump, and a cleaning driving device is meshed with the cleaning water spraying device.

The technical scheme of the invention is further improved as follows: wash water jet equipment including the pivot water pipe, pivot water pipe right-hand member fixed connection is in wasing the booster pump outlet end, pivot water pipe left end surface fixed connection has the washing bearing, wash bearing surface fixed connection and wash the shower nozzle, wash the inside cavity of shower nozzle, just wash the shower nozzle right-hand member for the cover tube form with wash bearing fixed connection, pivot water pipe left end face fixed connection has the washing seal gasket, wash seal gasket left end face and the inside end face contact cooperation of washing shower nozzle sleeve, wash shower nozzle right-hand member off-plate border and seted up the gear tooth.

The technical scheme of the invention is further improved as follows: the cleaning driving device comprises a cleaning motor, a motor driving gear is fixedly connected with an output shaft at the left end of the cleaning motor, and the motor driving gear is meshed with gear teeth at the outer edge of the cleaning nozzle.

The technical scheme of the invention is further improved as follows: the liquid medicine mixing arrangement is including the mixing box, fixed surface installs agitating unit on the mixing box, the mixing box left surface is provided with mixes the liquid export, the mixing box trailing flank is provided with the running water inlet, running water inlet left end is provided with the liquid medicine entry.

The technical scheme of the invention is further improved as follows: agitating unit is including agitator motor, agitator motor fixed mounting is in the mixing box upper surface, just agitator motor output shaft runs through mixing box upper surface fixedly connected with stirring fan blade, agitator motor output shaft bottom surface fixedly connected with sealed bearing, sealed bearing surface fixedly connected with seal shell, fixed surface connects in the inside upper surface of mixing box on the seal shell.

The technical scheme of the invention is further improved as follows: the spraying system comprises a connecting pipe fitting, and a spray head conversion device is movably connected to the outer surface of the middle position of the connecting pipe fitting.

The technical scheme of the invention is further improved as follows: the connecting pipe fitting comprises a pressurizing pipe, the right end of the pressurizing pipe is fixedly connected to the water outlet end of the left end of the spraying pressurizing pump, the pressurizing pipe is sleeved with an outer metal pipe through threads, a spraying sealing washer is fixedly arranged at the joint of the right end of the pressurizing pipe and the outer metal pipe, the inner metal pipe is fixedly connected to the two ends of the inner metal pipe, and the inner metal pipe is fixedly connected to the inner metal pipe in a left-right mode.

The technical scheme of the invention is further improved as follows: interior rubber tube lower extreme fixedly connected with export flexible piece, export flexible piece is the wedge, just export flexible piece runs through outer tubular metal resonator, the export is seted up to flexible piece upper surface of export, just the export of spray pipe runs through export flexible piece.

The technical scheme of the invention is further improved as follows: the sprayer conversion device comprises a rotary sleeve, wherein a sprayer connecting piece is fixedly connected to the outer surface of the rotary sleeve and is distributed in a circumferential array mode, a sprayer liquid outlet hole is formed in the upper end face of the sprayer connecting piece, a sealing groove is formed in the lower end face of the sprayer connecting piece and is in sealing connection with an outlet expansion block, the sprayer liquid outlet hole is aligned with the outlet of the spray pipe, a spray head is sleeved on the outer surface of the sprayer connecting piece through threads, and a sealing cover is sleeved on the outer surface of the sprayer connecting piece through threads.

Due to the adoption of the technical scheme, compared with the prior art, the invention has the technical progress that:

1. the invention provides a spraying deodorization and disinfection device capable of improving environment, which is characterized in that a stirring device is additionally arranged on a mixing box, a stirring motor of the stirring device can drive stirring blades to rotate, and after tap water and liquid medicine enter the mixing box through a tap water inlet and a liquid medicine inlet, the stirring blades of the stirring device rotate at high speed to stir mixed liquid, so that the mixed liquid can be uniformly stirred in a short time, the mixed liquid is fully mixed, the manpower during stirring is saved, the stirring efficiency is improved, and the stirring and mixing are more full.

2. The invention provides a spray deodorization and disinfection device capable of improving environment, which is characterized in that a cleaning spray head and a cleaning motor are additionally arranged in a mixing box, the cleaning motor can drive the cleaning spray head to rotate, a cleaning booster pump is used for conveying high-pressure tap water into the cleaning spray head and spraying the high-pressure tap water from the surface of the cleaning spray head, the spray head rotates at the same time, the inside of the whole mixing box can be flushed without dead angles, the impact force of the high-pressure tap water can ensure the flushing quality, so that the waste of human resources is reduced, time and labor are saved, and the skin is prevented from being damaged by liquid medicine in the manual cleaning process.

3. The invention provides spraying deodorization and disinfection equipment for improving environment, which is characterized in that a rotatable spray head conversion device is added on a spraying system, and the spray head conversion device can convert multiple types of spray heads, so that the spray heads are prevented from being replaced in the using process, the time for replacing the spray heads is saved, the difficulty for replacing the spray heads is simplified, and the damage of external threads of the spray heads caused by frequent replacement of the spray heads is avoided.

4. The invention provides spraying deodorization and disinfection equipment capable of improving the environment.

5. The invention provides a spraying deodorization and disinfection device capable of improving environment, gear teeth are additionally arranged on the outer surface of a cleaning spray head, so that the whole cleaning spray head can rotate under the driving of a cleaning motor to complete a cleaning action, a cleaning bearing is additionally arranged in the cleaning spray head, the cleaning spray head is ensured to be smoother when rotating along with the cleaning motor, and a cleaning sealing washer can prevent mixed liquid from entering the bearing to corrode the cleaning bearing.

6. The invention provides a spray deodorization and disinfection device capable of improving environment, which is additionally provided with a sealing cover, wherein the sealing cover can seal an unused spray head connecting piece, so that the problem that spray cannot be sprayed due to the fact that the spray head connecting piece is blocked by dust and the like because the spray head connecting piece is exposed in the air is prevented, and the effect of protecting the spray head connecting piece is achieved.

7. The invention provides a spraying deodorization and disinfection device for improving environment, which is characterized in that an inner rubber pipe is additionally arranged in a connecting pipe fitting, a certain gap is formed between the inner rubber pipe and an outer metal pipe, so that when the whole rotary sleeve rotates, a wedge-shaped outlet telescopic block can compress the inner rubber pipe, the wedge-shaped outlet telescopic block contracts, and when the whole rotary sleeve rotates to a next spray head connecting piece, the outlet telescopic block is popped out to be in sealing connection with a sealing groove, thereby ensuring that the spray head is smoothly switched, and the spray head is still sealed after being switched, so that the normal use is not influenced.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of a liquid medicine mixing device according to the present invention;

FIG. 3 is a schematic view of the cleaning apparatus of the present invention;

FIG. 4 is a schematic structural view of a stirring device according to the present invention;

FIG. 5 is a schematic diagram of the spray system of the present invention;

FIG. 6 is a schematic view of the connecting tube of the present invention;

FIG. 7 is a schematic structural diagram of a nozzle adapter according to the present invention.

In the figure: 1. a box body; 2. a cleaning device; 21. cleaning the booster pump; 22. cleaning the driving device; 221. cleaning the motor; 222. the motor drives the gear;

23. cleaning the water spraying device; 231. a rotating shaft water pipe; 232. cleaning a bearing; 233. cleaning a sealing gasket; 234. cleaning the spray head;

3. a liquid medicine mixing device; 31. a stirring device; 32. a tap water inlet; 33. a liquid medicine inlet; 34. a mixed liquid outlet; 35. a mixing box;

311. a stirring motor; 312. sealing the shell; 313. sealing the bearing; 314. a stirring fan blade;

4. a spray booster pump;

5. a spray system; 51. connecting pipe fittings; 52. a nozzle converting device;

511. an outer metal tube; 512. an inner metal tube; 513. an inner rubber tube; 514. an outlet of the spray pipe; 515. an outlet expansion block; 516. spraying a sealing gasket; 517. a pressure increasing pipe;

521. rotating the sleeve; 522. a nozzle link; 523. a nozzle liquid outlet hole; 524. a sealing cover; 525. a spray head; 526. sealing the groove.

Detailed Description

The present invention will be described in further detail with reference to the following examples:

example 1

As shown in fig. 1-7, the present invention provides a spray deodorization and disinfection apparatus for improving environment, which comprises a tank 1 and a spray booster pump 4, wherein the spray booster pump 4 is installed on the lower surface inside the tank 1, a liquid medicine mixing device 3 is fixedly connected to a water inlet at the right end of the spray booster pump 4, a cleaning device 2 is fixedly connected to the right side of the liquid medicine mixing device 3, and a spray system 5 is fixedly connected to a water outlet at the left end of the spray booster pump 4.

In the present embodiment, the chemical liquid mixing device 3 is used for a mixing configuration of spraying chemical liquid, the cleaning device 2 is responsible for cleaning the used mixing tank 35, and the spraying booster pump 4 is used for boosting the mixed liquid and simultaneously delivering the mixed liquid to the spraying system 5, and the spraying operation is completed by the spraying system 5.

Example 2

As shown in fig. 1 to 7, on the basis of embodiment 1, the present invention provides a technical solution: preferably, the cleaning device 2 comprises a cleaning booster pump 21, a cleaning water injector 23 is fixedly connected to the left end of the cleaning booster pump 21, the cleaning water injector 23 is engaged with a cleaning driving device 22, the cleaning water injector 23 comprises a rotating shaft water pipe 231, the right end of the rotating shaft water pipe 231 is fixedly connected to the water outlet end of the cleaning booster pump 21, a cleaning bearing 232 is fixedly connected to the outer surface of the left end of the rotating shaft water pipe 231, a cleaning nozzle 234 is fixedly connected to the outer surface of the cleaning bearing 232, the interior of the cleaning nozzle 234 is hollow, the right end of the cleaning nozzle 234 is in a sleeve shape and is fixedly connected with the cleaning bearing 232, a cleaning sealing gasket 233 is fixedly connected to the left end surface of the rotating shaft water pipe 231, the left end surface of the cleaning sealing gasket 233 is in contact fit with the inner end surface of the sleeve of the cleaning nozzle 234, gear, motor drive gear 222 and washing shower nozzle 234 outside edge gear teeth mesh, wash booster pump 21 and carry the running water to washing shower nozzle 234 and pressurize, make it spout at a high speed, wash motor 221 simultaneously and drive motor drive gear 222 and rotate, motor drive gear 222 drives whole washing shower nozzle 234 through the gear teeth of washing shower nozzle 234 outside edge and rotates, accomplish the washing to whole mixing box 35, wash bearing 232 and make the rotation of washing shower nozzle 234 more smooth.

Example 3

As shown in fig. 1 to 7, on the basis of embodiment 1, the present invention provides a technical solution: preferably, the liquid medicine mixing device 3 includes a mixing box 35, a stirring device 31 is fixedly installed on the upper surface of the mixing box 35, a mixed liquid outlet 34 is arranged on the left side surface of the mixing box 35, a tap water inlet 32 is arranged on the rear side surface of the mixing box 35, a liquid medicine inlet 33 is arranged at the left end of the tap water inlet 32, the stirring device 31 includes a stirring motor 311, the stirring motor 311 is fixedly installed on the upper surface of the mixing box 35, an output shaft of the stirring motor 311 penetrates through the upper surface of the mixing box 35 and is fixedly connected with stirring blades 314, a sealing bearing 313 is fixedly connected to the outer surface of the bottom end of the output shaft of the stirring motor 311, a sealing shell 312 is fixedly connected to the outer surface of the sealing bearing 313, the upper surface of the sealing shell 312 is fixedly connected to the inner upper surface of the mixing box 35, tap water enters the mixing box 35, stirring fan blade 314 carries out abundant stirring to mixed liquid and mixes, and later mixed liquid will flow to spraying booster pump 4 through mixed liquid export 34, and sealed bearing 313 can make stirring fan blade 314's rotation more smooth, and sealed shell 312 plays water proof simultaneously and protects the effect.

Example 4

As shown in fig. 1 to 7, on the basis of embodiment 1, the present invention provides a technical solution: preferably, the spraying system 5 comprises a connecting pipe fitting 51, the outer surface of the middle position of the connecting pipe fitting 51 is movably connected with a nozzle conversion device 52, the connecting pipe fitting 51 comprises a pressure increasing pipe 517, the right end of the pressure increasing pipe 517 is fixedly connected with the water outlet end of the left end of the spraying pressure increasing pump 4, the pressure increasing pipe 517 is sleeved with an outer metal pipe 511 through a thread, a spraying sealing gasket 516 is fixedly installed at the joint of the right end of the pressure increasing pipe 517 and the outer metal pipe 511, the two ends of the inner part of the outer metal pipe 511 are fixedly connected with inner metal pipes 512, inner rubber pipes 513 are fixedly connected between the inner metal pipes 512 at the left end and the right end, the lower end of the inner rubber pipe 513 is fixedly connected with an outlet expansion block 515, the outlet expansion block 515 is wedge-shaped, the outlet expansion block 515 penetrates through the outer metal pipe 511, the upper surface of the outlet expansion block 515 is provided, the outer surface of the rotary sleeve 521 is fixedly connected with a sprayer connecting piece 522, the sprayer connecting piece 522 is distributed in a circumferential array, the upper end surface of the sprayer connecting piece 522 is provided with a sprayer liquid outlet hole 523, the lower end surface of the sprayer connecting piece 522 is provided with a sealing groove 526, the sealing groove 526 is in sealing connection with an outlet expansion block 515, the sprayer liquid outlet hole 523 is aligned with a sprayer outlet 514, the outer surface of the sprayer connecting piece 522 is sleeved with a sprayer 525 through threads, the outer surface of the sprayer connecting piece 522 is sleeved with a sealing cover 524 through threads, a sprayer conversion device 52 can convert the types of the sprayers used at any time to achieve the purpose of spraying different shapes, meanwhile, an outer metal pipe 511 is responsible for the connection of a spraying system 5 and a pressure increasing pipe 517, an inner rubber pipe 513 is soft in material, when the rotary sleeve 521 rotates, the outlet expansion block 515 can be pressed down along a wedge-shaped, the sealing groove 526 is matched with the outlet expansion block 515, so that the connection between the connecting pipe fitting 51 and the nozzle conversion device 52 is tighter, the water leakage phenomenon cannot be caused, the sealing cover 524 can seal and protect the nozzle connecting piece 522 when the nozzle connecting piece 522 is not used, dust is prevented from entering and blocking the nozzle connecting piece, the nozzle connecting piece 522 can be connected with different types of nozzles, and the rotating sleeve 521 can be rotated when the nozzle connecting piece 522 is used.

The working principle of the spray deodorizing and sterilizing apparatus for improving environment will be described in detail.

As shown in fig. 1-7, tap water and a liquid medicine enter the mixing tank 35 through the tap water inlet 32 and the liquid medicine inlet 33, and the stirring motor 311 rotates to drive the stirring blades 314 to start stirring and mixing, so that the mixed liquid enters the spray booster pump 4 through the mixed liquid outlet 34 after mixing, the spray booster pump 4 boosts the pressure of the mixed liquid, and then the mixed liquid is conveyed to the spray head 525 through the booster pipe 517 and is sprayed out in a spraying manner;

as shown in fig. 1-7, when the spray head 525 is switched, the rotary sleeve 521 rotates, so that the outlet expansion block 515 is compressed and contracted along the wedge-shaped inclined surface, and the inner rubber tube 513 is compressed inwards, so that the outlet expansion block 515 is completely contracted, and when the rotary sleeve 521 rotates the next nozzle connecting piece 522 to the lower part of the outlet expansion block 515, the outlet expansion block 515 is ejected under the elastic force of the inner rubber tube 513 and is matched and sealed with the sealing groove 526, so that the switching of the spray head 525 is completed.

As shown in fig. 1 to 7, when the mixing tank 35 is cleaned, the cleaning pressurizing pump 21 pressurizes the tap water and sprays the pressurized tap water at a high pressure through the cleaning nozzle 234, and the cleaning motor 221 rotates to drive the entire cleaning nozzle 234 to rotate, thereby performing all-around cleaning of the entire mixing tank 35.

The present invention has been described in general terms in the foregoing, but it will be apparent to those skilled in the art that modifications and improvements can be made thereto based on the present invention. Therefore, modifications or improvements are within the scope of the invention without departing from the spirit of the inventive concept.

Claims

1. The utility model provides an improve spraying deodorization disinfecting equipment of environment, includes box (1) and spraying booster pump (4), its characterized in that: the utility model discloses a spraying device, including box (1), spraying booster pump (4) right-hand member water inlet fixedly connected with liquid medicine mixing arrangement (3), liquid medicine mixing arrangement (3) right side fixedly connected with belt cleaning device (2), spraying booster pump (4) left end outlet end fixedly connected with spraying system (5).

2. An improved environmental spray deodorizing and disinfecting device according to claim 1, characterized in that: the cleaning device (2) comprises a cleaning booster pump (21), a cleaning water spraying device (23) is fixedly connected to the left end of the cleaning booster pump (21), and a cleaning driving device (22) is meshed with the cleaning water spraying device (23).

3. An improved environmental spray deodorizing and disinfecting device according to claim 2, characterized in that: wash water jet equipment (23) including pivot water pipe (231), pivot water pipe (231) right-hand member fixed connection is in wasing booster pump (21) water outlet end, pivot water pipe (231) left end external fixed surface is connected with washs bearing (232), wash bearing (232) external fixed surface and be connected with and wash shower nozzle (234), wash shower nozzle (234) inside cavity, just wash shower nozzle (234) right-hand member for the cover tube form with wash bearing (232) fixed connection, pivot water pipe (231) left end face fixedly connected with washs seal gasket (233), wash seal gasket (233) left end face and wash shower nozzle (234) the cooperation of the inside end face contact of sleeve, wash shower nozzle (234) right end face outside border and seted up the gear tooth.

4. An improved environmental spray deodorizing and disinfecting device according to claim 2, characterized in that: the cleaning driving device (22) comprises a cleaning motor (221), a motor driving gear (222) is fixedly connected to an output shaft at the left end of the cleaning motor (221), and the motor driving gear (222) is meshed with gear teeth at the outer edge of the cleaning spray head (234).

5. An improved environmental spray deodorizing and disinfecting device according to claim 1, characterized in that: liquid medicine mixing arrangement (3) is including mixing box (35), fixed surface installs agitating unit (31) on mixing box (35), mixing box (35) left surface is provided with mixed liquid export (34), mixing box (35) trailing flank is provided with running water inlet (32), running water inlet (32) left end is provided with liquid medicine entry (33).

6. An improved environmental spray deodorizing and disinfecting device according to claim 5, characterized in that: agitating unit (31) is including agitator motor (311), agitator motor (311) fixed mounting is in mixing box (35) upper surface, just agitator motor (311) output shaft runs through mixing box (35) upper surface fixed connection and stirs flabellum (314), agitator motor (311) output shaft bottom outer fixed surface is connected with sealed bearing (313), sealed bearing (313) outer fixed surface is connected with sealed shell (312), sealed shell (312) upper surface fixed connection is in mixing box (35) inside upper surface.

7. An improved environmental spray deodorizing and disinfecting device according to claim 1, characterized in that: the spraying system (5) comprises a connecting pipe fitting (51), and a spray head conversion device (52) is movably connected to the outer surface of the middle position of the connecting pipe fitting (51).

8. An improved environmental spray deodorant and disinfecting device as claimed in claim 7, wherein: connect pipe fitting (51) including pressure boost pipe (517), pressure boost pipe (517) right-hand member fixed connection is in spraying booster pump (4) left end delivery end, outer metal pipe (511) have been cup jointed through the screw thread in pressure boost pipe (517), pressure boost pipe (517) right-hand member and outer metal pipe (511) junction fixed mounting have spraying seal ring (516), metal pipe (512) in the inside both ends fixedly connected with of outer metal pipe (511), control both ends rubber pipe (513) in the fixedly connected with between interior metal pipe (512).

9. An improved environmental spray deodorizing and disinfecting device according to claim 8, characterized in that: interior rubber tube (513) lower extreme fixedly connected with export flexible piece (515), export flexible piece (515) are the wedge, just export flexible piece (515) run through outer tubular metal resonator (511), spray tube export (514) have been seted up to export flexible piece (515) upper surface, just spray tube export (514) run through export flexible piece (515).

10. An improved environmental spray deodorant and disinfecting device as claimed in claim 7, wherein: shower nozzle conversion equipment (52) is including rotating sleeve (521), rotating sleeve (521) surface fixedly connected with shower nozzle connecting piece (522), shower nozzle connecting piece (522) are circumference array distribution, shower nozzle play liquid hole (523) have been seted up to shower nozzle connecting piece (522) up end, seal groove (526) have been seted up to shower nozzle connecting piece (522) lower terminal surface, seal groove (526) and the flexible piece (515) sealing connection in export, shower nozzle play liquid hole (523) aligns with spray pipe export (514), shower nozzle connecting piece (522) surface has cup jointed atomising head (525) through the screw thread, shower nozzle connecting piece (522) surface has cup jointed sealed lid (524) through the screw thread.