Pure water terminal bacteriostatic filter

Abstract

The utility model relates to the technical field of bacteriostatic filters, and discloses a pure water terminal bacteriostatic filter which comprises a tank body, a cavity with an upward opening and a funnel-shaped section is arranged in the tank body, a bacteriostatic mechanism for bacteriostasis of pure water is arranged at the lower end part of the cavity, a drain pipe is arranged at the lower end part of the tank body, and a water outlet is formed in the lower end part of the tank body. A cavity is formed in the tank body, a cover plate used for closing an opening of the cavity is arranged at the opening of the cavity, a water inlet pipe is arranged on the upper end face of the cover plate, the outer side wall of the cover plate extends outwards to form a mounting part, and a dismounting and mounting assembly used for dismounting and mounting the mounting part on the outer side wall of the tank body is arranged on the outer side wall of the tank body. Through the structure, the mounting part of the cover plate can be disassembled and assembled on the outer side wall of the tank body through the disassembling and assembling assembly, so that a worker can disassemble and assemble the cover plate on the tank body conveniently, then the worker can replace the antibacterial filter element conveniently, and use is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of bacteriostatic filter, specifically, a pure water terminal bacteriostatic filter. BACKGROUND

[0002] The pure water machine is a kind of equipment for preparing high-purity water, mainly applied to laboratory, medicine, pharmacy and other industries needing high-purity water. Its working principle is to remove impurities and ions in water through multi-stage purification technology, and finally obtain pure water or ultrapure water.

[0003] For example, the bacteriostatic filter of the direct drinking machine disclosed in the patent with publication number CN218262204U can carefully scrape the filter surface according to needs, ensure the filtering effect, prevent the growth of bacteria by using ultraviolet sterilization and ozone sterilization, and improve the purification effect, which is practical. However, the bacteriostatic filter of the direct drinking machine needs to be replaced by the staff after long use, and the staff needs to remove the upper shell from the lower shell to replace the filter filling piece. Since the upper shell and the lower shell are connected by a flange structure, it is inconvenient to disassemble the upper shell from the lower shell, which makes the replacement of the filter filling piece more inconvenient, so it needs to be improved. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of pure water terminal bacteriostatic filter to solve the problems raised in the above background.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A kind of pure water terminal bacteriostatic filter, including tank body, the tank body is equipped with the cavity that is opened upward and the section is funnel-shaped, the lower end portion of cavity is equipped with the bacteriostatic mechanism for carrying out bacteriostasis to pure water, the lower end portion of tank body is equipped with drain pipe, the opening of cavity is equipped with the cover plate for closing the opening of cavity, the upper end surface of cover plate is equipped with inlet pipe, the outer side wall of cover plate extends outward to form mounting portion, the outer side wall of tank body is equipped with dismounting assembly for realizing the dismounting of mounting portion on the outer side wall of tank body.

[0007] Preferably, the upper end surface of mounting portion is equipped with a plurality of mounting holes penetrating mounting portion, the side wall of mounting hole is equipped with mounting groove opposite and penetrating mounting portion;

[0008] The dismounting and assembling assembly comprises a sleeve provided on the outer sidewall of the tank body and having an L-shaped cross section, a plurality of rotating rods provided on the sleeve in a circumferential direction and having one end penetrating through the corresponding mounting holes, the rotating rods being rotatably arranged, the penetrating ends of the rotating rods being provided with opposite protrusions, the protrusions being corresponded to or staggered with the corresponding mounting slots to realize the dismounting and assembling of the mounting part on the outer sidewall of the tank body, and a rotating member provided on the sleeve and used for driving the plurality of rotating rods to rotate synchronously.

[0009] Preferably, the rotating rods are all provided with first gears.

[0010] The rotating member comprises a gear ring provided on the sleeve and engaged with the plurality of first gears, the gear ring being rotatable and arranged in a circumferential direction of the sleeve, the gear ring being used for driving the plurality of first gears to rotate, the protrusions on the rotating rods being corresponded to or staggered with the mounting slots, and the sleeve being further provided with a positioning member used for positioning the position of the gear ring after rotation.

[0011] Preferably, the mounting part is provided with a positioning hole penetrating through the mounting part, the sidewall of the positioning hole is provided with opposite first fixing slots penetrating through the mounting part, and the sidewall of the positioning hole is provided with opposite second fixing slots.

[0012] The positioning member comprises a fixing rod provided on the sleeve and rotatable, the fixing rod being provided with a second gear engaged with the gear ring, one end of the fixing rod penetrating through the positioning hole, the protruding end of the fixing rod being provided with a fixing plate liftable, the sidewall of the fixing plate being provided with opposite fixing blocks, the fixing plate driving the fixing blocks to be lifted for clamping the fixing blocks into the corresponding second fixing slots to realize the positioning of the rotation of the gear ring.

[0013] Preferably, the fixing rod is provided with a fixing cavity opening upward, the sidewall of the fixing cavity is provided with opposite limiting blocks in a height direction of the fixing cavity, the fixing cavity is provided with a circular plate slidable, both ends of the circular plate are provided with limiting slots for clamping the corresponding limiting blocks, the opening of the fixing cavity is provided with an intercepting ring used for limiting the circular plate, the circular plate is provided with a circular rod having one end penetrating through the intercepting ring, the penetrating end of the circular rod is connected to the fixing plate, and the fixing cavity is provided with a spring used for pushing the circular plate away from the intercepting ring.

[0014] Preferably, the upper end surface of the fixing plate is provided with a handle used for pulling the fixing plate to move upward.

[0015] Preferably, the sleeve is provided with first clamping slots in a circumferential direction of the sleeve for clamping the lower end of the gear ring, and the upper end portion of the sleeve is provided with a sleeve ring, the sleeve ring being provided with second clamping slots in a circumferential direction of the sleeve ring for clamping the upper end of the gear ring.

[0016] Compared with the prior art, the utility model has the beneficial effects that:

[0017] 1. The utility model discloses a dismounting assembly can install the installation part of the cover plate on the outer lateral wall of the jar body, compared with the prior art, the pure water terminal bacteriostatic filter is convenient to dismount when the bacteriostatic filter element needs to be replaced, thereby facilitating the replacement of the bacteriostatic filter element, and the use effect is better.

[0018] 2. The utility model discloses a positioning member is positioned to the rotation of the tooth ring, thereby avoiding the misrotation of the tooth ring when the cover plate is installed on the jar body, causing the convex block on the rotating rod to correspond with the installation groove, and then removing the installation of the cover plate on the jar body, and affecting the actual use. ACCURACY OF DRAWINGS

[0019] Figure 1 It is a structure diagram of a pure water terminal bacteriostatic filter in the utility model.

[0020] Figure 2 It is a sectional structure diagram of a jar body in the utility model.

[0021] Figure 3 It is Figure 2 An enlarged structure diagram of place A in the utility model.

[0022] Figure 4 It is Figure 2 An enlarged structure diagram of place B in the utility model.

[0023] Figure 5 It is a structure diagram of an installation part in the cover plate in the utility model.

[0024] Figure 6 It is Figure 5 An enlarged structure diagram of place C in the utility model.

[0025] Figure 7 It is Figure 5 An enlarged structure diagram of place D in the utility model.

[0026] The meanings of various reference numerals in the drawing are as follows:

[0027] 100, jar body; 101, drain pipe; 110, cover plate; 111, water inlet pipe; 112, installation part; 130, sleeve;

[0028] 200, bacteriostatic filter element; 201, cavity;

[0029] 301, first fixed groove; 310, fixed rod; 311, fixed cavity; 312, limiting block; 320, second gear; 330, fixed plate; 331, handle; 340, round plate; 350, intercepting ring; 360, round rod; 370, spring; 380, sleeve ring; 381, second clamping groove; 382, first clamping groove; 390, tooth ring;

[0030] 401. Mounting slot; 410. Rotating rod; 411. First gear;

[0031] 500, Second fixing groove; 510, Fixing block;

[0032] 600, bump. Detailed Implementation

[0033] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are merely illustrative of this utility model and are not intended to limit it.

[0034] The following is in conjunction with the appendix Figures 1-7 This embodiment will be described in further detail.

[0035] like Figure 1 As shown, a pure water terminal antibacterial filter in this embodiment includes a tank 100. The tank 100 has an upward-opening cavity 201 with a funnel-shaped cross-section. The lower end of the cavity 201 is provided with an antibacterial mechanism for inhibiting bacteria in pure water. The lower end of the tank 100 is provided with a drain pipe 101. The opening of the cavity 201 is provided with a cover plate 110 for closing the opening of the cavity 201. The upper end face of the cover plate 110 is provided with a water inlet pipe 111. The outer side wall of the cover plate 110 extends outward to form an installation part 112. The outer side wall of the tank 100 is provided with a disassembly and assembly component for disassembling and assembling the installation part 112 on the outer side wall of the tank 100.

[0036] In this embodiment, the antibacterial mechanism includes an antibacterial filter element 200 (existing technology) placed at the lower end of the cavity 201. By connecting the inlet pipe 111 to the outlet of the pure water machine, the pure water discharged from the terminal of the pure water machine can enter the cavity 201 through the inlet pipe 111 installed on the cover plate 110. After the pure water in the cavity 201 is filtered by the antibacterial filter element 200, the bacteria in the pure water can be further reduced to achieve antibacterial effect on the pure water. The filtered pure water can be discharged from the cavity 201 through the drain pipe 101 installed on the lower end face of the tank 100, thereby realizing the output of water from the pure water machine.

[0037] When the bacteriostatic filter 200 in the cavity 201 needs to be replaced after long-term use, the installation of the installation portion 112 is removed by the disassembling assembly, so that the cover plate 110 can be taken out from the tank body 100, thereby facilitating the replacement of the bacteriostatic filter 200 in the cavity 201 by the staff. When the replacement of the bacteriostatic filter 200 is completed, the staff places the cover plate 110 on the tank body 100 and fixes the installation portion 112 on the outer side wall of the tank body 100 by the disassembling assembly, thereby achieving the installation of the cover plate 110 on the tank body 100. Compared with the prior art, the pure water terminal bacteriostatic filter is convenient for the disassembly and assembly of the cover plate 110 on the tank body 100 by the disassembling assembly, thereby facilitating the replacement of the bacteriostatic filter 200 by the staff, and is convenient to use.

[0038] In actual use, the cavity 201 is funnel-shaped, and when the pure water in the water inlet pipe 111 enters the cavity 201, the pure water in the cavity 201 flows to the bacteriostatic filter 200, thereby enabling the bacteriostatic filter 200 to better bacteriostatic the pure water.

[0039] As shown in Figures 1-7 In this embodiment, a plurality of installation holes are provided on the upper end face of the installation portion 112 and penetrate the installation portion 112, and an installation groove 401 is provided on the side wall of the installation hole and penetrates the installation portion 112.

[0040] The disassembling assembly includes a sleeve 130 provided on the outer side wall of the tank body 100 and having an L-shaped cross section. A plurality of rotating rods 410 are provided on the sleeve 130 and penetrate the corresponding installation holes at one end. The rotating rods 410 are rotatably arranged, and the penetrating ends of the rotating rods 410 are provided with opposite protrusions 600. The protrusions 600 correspond to or are staggered with the corresponding installation grooves 401, thereby achieving the disassembly and assembly of the installation portion 112 on the outer side wall of the tank body 100. The sleeve 130 is further provided with a rotating member for driving the synchronous rotation of the plurality of rotating rods 410.

[0041] In the embodiment, by arranging the mounting holes, the mounting slots 401, the sleeve 130, the rotating rods 410, the protrusions 600 and the rotating member, when the cover plate 110 is mounted at the upper end of the tank body 100 by fixing the sleeve 130 on the outer sidewall of the tank body 100, the rotating rods 410 pass through the mounting holes to make the mounting portion 112 overlap the upper end of the sleeve 130, wherein the rotating rods 410 are rotatably arranged on the sleeve 130 by the bearing seat, the protrusions 600 are fixedly arranged on the rotating rods 410, when the cover plate 110 is placed on the tank body 100, the protrusions 600 on the rotating rods 410 can be located on the upper end surface of the mounting portion 112 through the mounting holes and the mounting slots 401, at this time, the rotating rods 410 are driven to rotate by the rotating member, so that the protrusions 600 on the rotating rods 410 are staggered with the mounting slots 401, thereby achieving the installation of the mounting portion 112 on the tank body 100.

[0042] When the cover plate 110 is placed on the tank body 100, the rotating rods 410 correspond to the mounting holes, and the protrusions 600 do not correspond to the mounting slots 401, the rotating rods 410 are driven to rotate by the rotating member, so that the protrusions 600 on the rotating rods 410 rotate, when the protrusions 600 correspond to the mounting slots 401, the cover plate 110 automatically moves downward, so that the rotating rods 410 and the protrusions 600 can be located at the upper end surface of the mounting portion 112, then, the protrusions 600 on the rotating rods 410 are staggered with the mounting slots 401 by driving the rotating member, so that the use is more convenient.

[0043] When the cover plate 110 needs to be removed from the tank body 100 in actual use, the rotating rods 410 are driven to rotate by the rotating member, so that the protrusions 600 on the rotating rods 410 correspond to each other, the cover plate 110 can be lifted by the staff, so that the cover plate 110 can be removed from the tank body 100, and the bacteriostatic filter element 200 in the cavity 201 can be replaced.

[0044] As shown in Figures 1-7 In the embodiment, the first gears 411 are arranged on the rotating rods 410.

[0045] The rotating member includes a gear ring 390 arranged on the sleeve 130 and engaged with the plurality of first gears 411, the gear ring 390 is rotatable and arranged along the circumference of the sleeve 130, the gear ring 390 is used to drive the plurality of first gears 411 to rotate, so that the protrusions 600 on the rotating rods 410 correspond to or are staggered with the mounting slots 401, the sleeve 380 is further provided with a positioning member for positioning the position of the gear ring 390 after rotation.

[0046] In the embodiment, through the setting of the first gear 411, the gear ring 390 and the positioning member, when the staff drives the gear ring 390 to rotate, the gear ring 390 can drive multiple first gears 411 to rotate simultaneously, so as to realize the synchronous rotation of multiple rotating rods 410, by fixing the first gear 411 on the corresponding rotating rod 410.

[0047] Wherein, the sleeve 130 is provided with a first clamping groove 382 for clamping the lower end of the gear ring 390 along the circumference thereof, and the upper end of the sleeve 130 is fixedly provided with a sleeve ring 380, and the sleeve ring 380 is provided with a second clamping groove 381 for clamping the upper end of the gear ring 390 along the circumference thereof, and by clamping the two ends of the gear ring 390 into the first clamping groove 382 and the second clamping groove 381 respectively, the rotating installation of the gear ring 390 can be realized.

[0048] Wherein, the upper ends of the rotating rods 410 all penetrate the sleeve ring 380, so that the upper and lower ends of the rotating rods 410 are both installed, thereby making the rotating rods 410 more stable when rotating.

[0049] When actually used, the rotation of the gear ring 390 is positioned by the positioning member, so as to avoid the misrotation of the gear ring 390 when the cover plate 110 is installed on the tank body 100, which causes the protrusions 600 on the rotating rods 410 to correspond to the installation grooves 401, thereby removing the installation of the cover plate 110 on the tank body 100, and affecting the actual use.

[0050] As shown in Figures 1-6 In the embodiment, the installation portion 112 is provided with a positioning hole penetrating the installation portion 112, the side wall of the positioning hole is provided with a first fixing groove 301 opposite to and penetrating the installation portion 112, and the side wall of the positioning hole is provided with a second fixing groove 500 opposite to each other.

[0051] The positioning member comprises a fixed rod 310 provided on the sleeve 130 and rotatable, a second gear 320 provided on the fixed rod 310 and engaged with the gear ring 390, one end of the fixed rod 310 penetrating the positioning hole, and a fixed plate 330 provided on the protruding end of the fixed rod 310 and liftable, the side wall of the fixed plate 330 being provided with a fixed block 510 opposite to each other, the fixed plate 330 driving the fixed block 510 to lift for clamping the fixed block 510 into the corresponding second fixing groove 500, so as to position the rotation of the gear ring 390.

[0052] In the embodiment, by positioning the hole, the first fixing groove 301, the second fixing groove 500, the fixing rod 310, the second gear 320, the fixing plate 330 and the fixing block 510, the fixing rod 310 is rotatably installed on the sleeve 130 through the bearing seat, the second gear 320 is fixedly installed on the fixing rod 310, the fixing plate 330 is fixedly installed on the upper end surface of the fixing rod 310, and the fixing block 510 is fixedly installed on the fixing plate 330. When the fixing plate 330 drives the fixing block 510 to move upwards, the fixing block 510 is not located in the first fixing groove 301 and the second fixing groove 500, at this time, the fixing rod 310 can be driven to rotate by rotating the fixing plate 330, the second gear 320 can be driven to rotate when the fixing rod 310 rotates, and the gear ring 390 can be driven to rotate by rotating the second gear 320, thereby facilitating the rotation of the gear ring 390 by the staff.

[0053] When the fixing plate 330 drives the fixing block 510 to move downwards, the fixing block 510 is located in the second fixing groove 500, at this time, the protrusions 600 on the rotating rod 410 are staggered with the installation grooves 401, the second fixing groove 500 limits the fixing block 510, so that the fixing plate 330 cannot rotate, and the rotating rod 410 and the second gear 320 cannot rotate due to the inability of the fixing plate 330 to rotate. Since the second gear 320 is engaged with the gear ring 390, when the second gear 320 cannot rotate, the rotation of the gear ring 390 is positioned.

[0054] When the fixing plate 330 drives the fixing block 510 to move upwards and rotate, the clamping block on the fixing plate 330 is located in the first fixing groove 301, at this time, the protrusions 600 on the rotating rod 410 correspond to the installation grooves 401, then the staff can take off the cover plate 110 from the tank body 100 by lifting the cover plate 110.

[0055] As shown in Figures 1-6 In the embodiment, the fixing rod 310 is provided with a fixed cavity 311 opening upwards, opposite limiting blocks 312 are arranged on the side wall of the fixed cavity 311 along the height direction thereof, a circular plate 340 slidably arranged in the fixed cavity 311, limiting grooves are arranged at both ends of the circular plate 340 for clamping the corresponding limiting blocks 312, an intercepting ring 350 is arranged at the opening of the fixed cavity 311 for limiting the circular plate 340, a circular rod 360 is arranged on the circular plate 340 and penetrates through the intercepting ring 350, the penetrating end of the circular rod 360 is connected to the fixing plate 330, and a spring 370 is arranged in the fixed cavity 311 for pushing the circular plate 340 away from the intercepting ring 350.

[0056] In the embodiment, by setting the fixing cavity 311, the limiting block 312, the circular plate 340, the limiting groove, the intercepting ring 350, the circular rod 360 and the spring 370, the limiting block 312 is fixedly installed in the fixing cavity 311, one end of the circular rod 360 is fixedly installed on the circular plate 340, the other end of the circular rod 360 is installed on the fixed plate 330, the spring 370 is sleeved on the circular rod 360 in the fixing cavity 311, the intercepting ring 350 is fixedly installed at the opening of the fixing cavity 311, the circular plate 340 is intercepted, the spring 370 is fixedly installed in the fixing cavity 311, the installation of the circular plate 340 and the spring 370 in the fixing cavity 311 is realized, when the fixed plate 330 drives the fixed block 510 to move upwards, the fixed plate 330 drives the circular plate 340 to ascend and descend in the fixing cavity 311 through the circular rod 360, so that the fixed plate 330 is installed on the fixed rod 310 to ascend and descend, when the fixed plate 330 rotates on the fixed block 510, the fixed plate 330 can drive the circular plate 340 to rotate through the circular rod 360, the circular plate 340 rotates through the cooperation of the limiting groove and the limiting block 312, so that the rotation of the circular plate 340 can drive the fixed rod 310 to rotate;

[0057] When the fixed block 510 on the fixed plate 330 is located in the second fixed groove 500, the spring 370 drives the circular plate 340 to move, the circular plate 340 drives the fixed plate 330 to move towards the intercepting ring 350 through the circular rod 360, so that the fixed block 510 on the fixed plate 330 can always be located in the second fixed groove 500, so as to avoid the shaking of the tank body 100, the fixed block 510 on the fixed plate 330 from sliding out of the second fixed groove 500, and the positioning of the tooth ring 390 is affected;

[0058] When actually used, the upper end face of the fixed plate 330 is fixedly installed with a handle 331 for pulling the fixed plate 330 to move upwards, the handle 331 can better drive the fixed plate 330 to move upwards or rotate, and the use is more convenient.

[0059] Working principle: first, the pure water machine discharged pure water through the water inlet pipe 111 can enter the cavity 201, the cavity 201 in through the bacteriostatic filter 200 after filtering, in through the drain pipe 101 from the cavity 201, when the bacteriostatic filter 200 needs to be replaced for a long time, the staff through the pull handle 331 up and rotate the fixed plate 330, so that the fixed block 510 on the fixed plate 330 from the second fixed groove 500 slip out and correspond to the first fixed groove 301, when the fixed plate 330 rotates will drive the fixed rod 310 to rotate, the fixed rod 310 rotates through the second gear 320 to rotate, so that the gear ring 390 rotates, when the gear ring 390 rotates will drive the first gear 411 to rotate, that is, the rotating rod 410 rotates, and makes the convex block 600 on the rotating rod 410 and the installation groove 401 corresponding, at this time, the staff through the up cover plate 110 can be taken off from the tank 100, and the bacteriostatic filter 200 in the cavity 201 is replaced, when the replacement of bacteriostatic filter 200 is completed, the cover plate 110 is placed on the tank 100, so that the convex block 600 and the fixed plate 330 are located on the mounting portion 112, then, through the pull handle 331 up and rotate the fixed plate 330, so that the fixed block 510 on the fixed plate 330 is located in the second fixed groove 500, at this time, the convex block 600 on the rotating rod 410 is staggered with the installation groove 401, that is, the installation of the cover plate 110 on the tank 100 can be realized.

Claims

1. A pure water terminal bacteriostatic filter characterized by: The utility model provides a kind of water purifier, including tank (100), the cavity (201) of opening upward and cross section funnel shape is equipped in tank (100), the lower end of cavity (201) is equipped with the bacteriostatic mechanism for carrying out bacteriostasis to pure water, the lower end of tank (100) is equipped with drain pipe (101), the opening of cavity (201) is equipped with the cover plate (110) for being used to close the opening of cavity (201), the upper end surface of cover plate (110) is equipped with water inlet pipe (111), the outer lateral wall of cover plate (110) extends outward and forms mounting portion (112), the outer lateral wall of tank (100) is equipped with the dismounting assembly for realizing mounting portion (112) on the outer lateral wall of tank (100) dismounting;The upper end surface of mounting portion (112) is equipped with a plurality of installation holes passing through mounting portion (112), the lateral wall of installation hole is equipped with the installation slot (401) opposite and passing through mounting portion (112);Dismounting assembly includes sleeve (130) on the outer lateral wall of tank (100) and cross section L-shaped, sleeve (130) is equipped with a plurality of rotation rods (410) on its circumferential direction and one end passes through corresponding installation hole, rotation rod (410) can be rotatably arranged, the penetrating end of rotation rod (410) is equipped with opposite lug (600), lug (600) is correspondingly or staggered with corresponding installation slot (401), realizes the dismounting of mounting portion (112) on the outer lateral wall of tank (100), sleeve ring (380) is also equipped with the rotating member for driving a plurality of rotation rods (410) synchronous rotation.

2. The bacteriostatic filter of claim 1, wherein: First gear (411) is sleeved on rotation rod (410); Rotating member includes gear ring (390) on sleeve (130) and with a plurality of first gear (411) meshing, gear ring (390) can be rotated and is arranged along the circumferential direction of sleeve (130), gear ring (390) rotates for driving a plurality of first gear (411) to rotate, realizes that the lug (600) on rotation rod (410) is correspondingly or staggered with installation slot (401), sleeve ring (380) is also equipped with the positioning member for the position of gear ring (390) after rotation is positioned.

3. The bacteriostatic filter of claim 2, wherein: Positioning hole is equipped on mounting portion (112) and passes through mounting portion (112), the lateral wall of positioning hole is equipped with the first fixed slot (301) opposite and passing through mounting portion (112), the lateral wall of positioning hole is equipped with opposite second fixed slot (500); Positioning member includes fixed rod (310) on sleeve (130) and rotatable, second gear (320) is sleeved on fixed rod (310) and with gear ring (390) meshing, one end of fixed rod (310) passes through positioning hole and is arranged, the protruding end of fixed rod (310) is equipped with liftable fixed plate (330), the lateral wall of fixed plate (330) is equipped with opposite fixed block (510), fixed plate (330) drives fixed block (510) to lift for being clamped into corresponding second fixed slot (500) in fixed block (510), realizes the rotation of gear ring (390) is positioned.

4. The bacteriostatic filter of claim 3, wherein: A fixed rod (310) is internally provided with a fixed cavity (311) with an opening upward, opposite limiting blocks (312) are arranged on the side wall of the fixed cavity (311) along the height direction thereof, a slidable circular plate (340) is arranged in the fixed cavity (311), limiting grooves for allowing the corresponding limiting blocks (312) to be clamped are arranged at both ends of the circular plate (340), an intercepting ring (350) for limiting the circular plate (340) is arranged at the opening of the fixed cavity (311), a circular rod (360) with one end penetrating through the intercepting ring (350) is arranged on the circular plate (340), the penetrating end of the circular rod (360) is connected to the fixed plate (330), and a spring (370) for pushing the circular plate (340) away from the intercepting ring (350) is arranged in the fixed cavity (311).

5. The bacteriostatic filter of claim 4, wherein: A handle (331) for pulling the fixed plate (330) to move upward is arranged on the upper end face of the fixed plate (330).

6. The bacteriostatic filter of claim 5, wherein: A first clamping groove (382) for clamping the lower end of the tooth ring (390) is arranged on the sleeve (130) along the circumferential direction thereof, a sleeve ring (380) is arranged at the upper end of the sleeve (130), and a second clamping groove (381) for clamping the upper end of the tooth ring (390) is arranged on the sleeve ring (380) along the circumferential direction thereof.

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