CN213684343U

CN213684343U - Filter screen fixing device

Info

Publication number: CN213684343U
Application number: CN202022992840.4U
Authority: CN
Inventors: 赵福权; 章春建; 孙雪萍; 陈敏杰
Original assignee: Zhejiang Qinpeng Technology Co ltd
Current assignee: Zhejiang Qinpeng Technology Co ltd
Priority date: 2020-12-14
Filing date: 2020-12-14
Publication date: 2021-07-13
Anticipated expiration: 2030-12-14

Abstract

The utility model relates to the technical field of filters, and discloses a filter screen fixing device of a filter, which comprises a filter main body, wherein the upper end of the filter main body is connected with an air duct, and the air duct is connected with a cover-shaped filter screen body through a fixing mechanism; the fixing mechanism comprises a support ring matched with the air guide tube, the support ring is fixedly connected to the lower end of the filter screen body, the support ring is sleeved on the outer tube wall of the air guide tube, the air guide tube and the support ring are connected through a sealing assembly, a matched pull rod is arranged at the center in the air guide tube, a pull hole is formed in the position, corresponding to the pull rod, of the upper end center of the filter screen body, the upper end of the pull rod penetrates through the pull hole and extends outwards, four transmission holes are formed in the tube wall of the air guide tube in an annular uniform and equidistant mode, fixing blocks are arranged in the transmission holes, and fixing grooves. The utility model discloses it is convenient to accomplish fixedly to the filter screen body, has improved the dismouting efficiency of filter screen body.

Description

Filter screen fixing device

Technical Field

The utility model relates to a filter technical field especially relates to a filter screen fixing device.

Background

The filter is an essential component of a power system, and is applied to mechanical equipment such as pneumatic machinery, internal combustion machinery and the like to provide clean air for the mechanical equipment so as to prevent the mechanical equipment from sucking air with foreign particles in work and increase the abrasion and damage probability of the equipment. In order to improve the filtering efficiency of the air filter, a filter screen is usually installed at an air inlet of the air filter, the filter screen is generally fixedly connected with the air filter through screws at present, and the fixing mode is too complicated.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the filter screen is generally fixedly connected with the filter through the screw in the prior art, the fixing mode is too complicated, and the filter screen fixing device is provided.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a filter screen fixing device comprises a filter main body, wherein the upper end of the filter main body is connected with an air guide pipe, and the air guide pipe is connected with a cover-shaped filter screen body through a fixing mechanism;

the fixing mechanism comprises a support ring matched with the air duct, the support ring is fixedly connected to the lower end of the filter screen body, the support ring is sleeved on the outer pipe wall of the air duct, the air duct is connected with the support ring through a sealing component, a matched pull rod is arranged at the center in the air duct, a pull hole is formed in the center of the upper end of the filter screen body corresponding to the position of the pull rod, the upper end of the pull rod penetrates through the pull hole and extends outwards, four transmission holes are formed in the pipe wall of the air duct in an annular uniform and equidistant mode, a fixing block is arranged in each transmission hole, a fixing groove is formed in the inner ring wall of the support ring corresponding to the position of the fixing block, one end, far away from the pull rod, of the fixing block is inserted into the corresponding fixing groove, a transmission rope is fixedly connected to the center of one end, the fixed block is close to the symmetry fixedly connected with slider on the lateral wall of pull rod one end position, the spout has been seted up to the position that corresponds the slider on the pore wall in transmission hole, slider sliding connection is in the spout that corresponds, the one end fixedly connected with spring that the slider is close to the pull rod, the other end fixed connection of spring is on the corresponding cell wall of spout.

Preferably, the sealing assembly comprises a sealing ring, a sealing groove is annularly formed in the outer wall of the air duct, the sealing ring is arranged in the sealing groove, and the outer annular wall of the sealing ring is arranged on the inner annular wall of the support ring.

Preferably, the air duct, the filter screen body, the support ring and the pull rod are coaxially arranged.

Preferably, the sliding chute is internally and fixedly connected with a sliding rod, the sliding rod penetrates through the sliding block, and the sliding block is connected to the rod wall of the sliding rod in a sliding mode.

Preferably, the hole wall of the pull hole is provided with four rolling grooves which are uniformly arranged in an annular shape at equal intervals by taking the pull rod as the center, rolling balls are arranged in the rolling grooves, the balls penetrate through the notches of the rolling grooves and are connected to the rod wall of the pull rod in a rolling manner.

Preferably, the inner pipe wall of the air duct is fixedly connected with four fixed pulleys in an annular, uniform and equidistant manner at positions corresponding to the four transmission holes, and the transmission rope is arranged by winding around the corresponding fixed pulleys.

Compared with the prior art, the utility model provides a filter screen fixing device possesses following beneficial effect:

according to the filter screen fixing device for the filter, the filter screen body and the filter main body are firmly connected together by arranging the fixing mechanism and clamping the fixing block into the fixing groove, the air tightness between the support ring and the air guide pipe is ensured by the sealing assembly, when the filter screen body needs to be detached from the filter main body, one hand presses the filter screen body, the other hand exerts upward pulling force on the pull rod to pull out the fixing block from the fixing groove, and then the upward pulling force is exerted on the filter screen body, so that the filter screen body and the support ring can be detached from the air guide pipe of the filter main body; in the same way, take in the fixed block in the transmission hole earlier, overlap the support ring on the air duct again for the fixed block can accomplish to install the filter screen body in the filter main part in the fixed slot of popping into under the power effect that resets of spring, and convenient accomplishes fixedly to the filter screen body, has improved the dismouting efficiency of filter screen body.

The part that does not relate to in the device all is the same with prior art or can adopt prior art to realize, the utility model discloses it is convenient to accomplish fixedly to filter screen body, has improved filter screen body's dismouting efficiency.

Drawings

Fig. 1 is a schematic structural view of a filter screen fixing device of the present invention;

fig. 2 is an enlarged view of a portion a in fig. 1.

In the figure: the filter comprises a filter main body 1, an air guide pipe 2, a filter screen body 3, a support ring 4, a pull rod 5, a transmission hole 6, a fixing block 7, a fixing groove 8, a transmission rope 9, a sliding block 10, a sliding groove 11, a spring 12, a sealing ring 13, a sealing groove 14, a fixed pulley 15, a sliding rod 16 and a ball 17.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-2, a filter screen fixing device comprises a filter main body 1, wherein the upper end of the filter main body 1 is connected with an air duct 2, and the air duct 2 is connected with a cover-shaped filter screen body 3 through a fixing mechanism;

the fixing mechanism comprises a support ring 4 matched with the air duct 2, the support ring 4 is fixedly connected with the lower end of the filter screen body 3, the support ring 4 is sleeved on the outer pipe wall of the air duct 2, the air duct 2 and the support ring 4 are connected through a sealing assembly, a matched pull rod 5 is arranged at the center in the air duct 2, a pull hole is arranged at the center of the upper end of the filter screen body 3 corresponding to the pull rod 5, the upper end of the pull rod 5 passes through the pull hole and extends outwards, four transmission holes 6 are uniformly arranged on the pipe wall of the air duct 2 in an annular shape at equal intervals, a fixed block 7 is arranged in each transmission hole 6, a fixed groove 8 is arranged on the inner ring wall of the support ring 4 corresponding to the fixed block 7, one end of the fixed block 7 far away from the pull rod 5 is inserted into the corresponding fixed groove 8, a transmission rope 9 is fixedly connected at the center of one, the side wall of the fixing block 7 close to one end of the pull rod 5 is symmetrically and fixedly connected with a slide block 10, the hole wall of the transmission hole 6 corresponding to the slide block 10 is provided with a sliding groove 11, the slide block 10 is connected in the corresponding sliding groove 11 in a sliding manner, one end of the slide block 10 close to the pull rod 5 is fixedly connected with a spring 12, the other end of the spring 12 is fixedly connected on the corresponding groove wall of the sliding groove 11, the support ring 4 and the air duct 2 are fixed into a whole by clamping the fixing block 7 in the fixing groove 8, the filter screen body 3 and the filter main body 1 are further firmly connected together, the air tightness between the support ring 4 and the air duct 2 is ensured by a sealing assembly, when the filter screen body 3 needs to be detached from the filter main body 1, one hand presses the filter screen body 3, the other hand exerts upward pulling force on the pull rod 5, and when, applying a pulling force towards the direction of the pull rod 5 to the fixed block 7, enabling the fixed block 7 to drive the sliding block 10 to synchronously slide in the sliding groove 11, compressing the spring 12, simultaneously pulling out the fixed block 7 from the fixed groove 8, enabling the fixed block 7 to be collected into the transmission hole 6, applying an upward pulling force to the filter screen body 3 at the moment, and taking down the filter screen body 3 and the support ring 4 from the air duct 2 of the filter main body 1; in a similar way, take in fixed block 7 in transmission hole 6 earlier, overlap support ring 4 on air duct 2 again, loosen pull rod 5 afterwards for fixed block 7 is in the fixed slot 8 of popping into under spring 12's the power effect that resets, can accomplish and install filter screen body 3 on filter main part 1, and convenient accomplishes fixedly filter screen body 3, has improved filter screen body 3's dismouting efficiency.

The seal assembly comprises a seal ring 13, a seal groove 14 is annularly formed in the outer wall of the air guide pipe 2, the seal ring 13 is arranged in the seal groove 14, the outer annular wall of the seal ring 13 is arranged on the inner annular wall of the support ring 4, and the sealing performance between the air guide pipe 2 and the support ring 4 is improved through the seal ring 13.

The air duct 2, the filter screen body 3, the support ring 4 and the pull rod 5 are coaxially arranged.

A sliding rod 16 is fixedly connected in the sliding groove 11, the sliding rod 16 penetrates through the sliding block 10, and the sliding block 10 is connected to the rod wall of the sliding rod 16 in a sliding mode, so that the stability of the sliding block 10 in the sliding groove 11 during movement is improved.

Use pull rod 5 to be four rolling grooves of having seted up of the even equidistance of annular as the center on the pore wall of trompil, the rolling inslot is equipped with rolling ball 17, and ball 17 passes the notch setting of rolling groove, and ball 17 roll connection is on pull rod 5's pole wall, through the ball 17 centre gripping pull rod 5 that is the annular distribution setting, when pull rod 5 when the motion in the trompil, drives ball 17 and rolls, has reduced the frictional resistance of pull rod 5 when the motion in the trompil.

The inner pipe wall of the air duct 2 corresponds to four fixed pulleys 15 fixedly connected with the four transmission holes 6 at equal intervals in an annular mode, the transmission rope 9 bypasses the corresponding fixed pulleys 15, the moving direction of the transmission rope 9 is adjusted through the fixed pulleys 15, and therefore the transmission rope 9 can better apply tension to the fixed block 7.

In the utility model, the support ring 4 and the air duct 2 are fixed into a whole by the fixing block 7 clamped in the fixing groove 8, thereby firmly connecting the filter screen body 3 and the filter main body 1 together, ensuring the air tightness between the support ring 4 and the air duct 2 through a sealing component, when the filter screen body 3 needs to be detached from the filter main body 1, one hand presses the filter screen body 3, the other hand applies upward pulling force to the pull rod 5, when the pull rod 5 moves upwards, through the transmission of the transmission rope 9, a pulling force towards the direction of the pull rod 5 is applied to the fixed block 7, the fixed block 7 drives the slide block 10 to synchronously slide in the sliding groove 11, the fixing block 7 is pulled out from the fixing groove 8 while the spring 12 is compressed, so that the fixing block 7 is taken into the transmission hole 6, and at the moment, upward pulling force is applied to the filter screen body 3, the filter screen body 3 and the support ring 4 can be taken down from the air duct 2 of the filter main body 1; in a similar way, take in fixed block 7 in transmission hole 6 earlier, overlap support ring 4 on air duct 2 again, loosen pull rod 5 afterwards for fixed block 7 is in the fixed slot 8 of popping into under spring 12's the power effect that resets, can accomplish and install filter screen body 3 on filter main part 1, and convenient accomplishes fixedly filter screen body 3, has improved filter screen body 3's dismouting efficiency.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A filter screen fixing device comprises a filter main body (1), and is characterized in that the upper end of the filter main body (1) is connected with an air duct (2), and the air duct (2) is connected with a cover-shaped filter screen body (3) through a fixing mechanism;

the fixing mechanism comprises a support ring (4) matched with the air duct (2), the support ring (4) is fixedly connected to the lower end of the filter screen body (3), the support ring (4) is sleeved on the outer pipe wall of the air duct (2), the air duct (2) and the support ring (4) are connected through a sealing assembly, a matched pull rod (5) is arranged at the inner center of the air duct (2), a pull hole is formed in the upper end center of the filter screen body (3) corresponding to the pull rod (5), the upper end of the pull rod (5) penetrates through the pull hole and extends outwards, four transmission holes (6) are formed in the pipe wall of the air duct (2) in an annular uniform and equidistant mode, a fixing block (7) is arranged in each transmission hole (6), a fixing groove (8) is formed in the position, corresponding to the fixing block (7), of the inner ring wall of the support ring (4), one end, far away from the pull rod (5), of the fixing block (7) is inserted, fixed block (7) are close to one end center fixedly connected with driving rope (9) of pull rod (5), the other end fixed connection of driving rope (9) is on the pole wall of pull rod (5), fixed block (7) are close to symmetrical fixedly connected with slider (10) on the lateral wall of pull rod (5) one end position, spout (11) have been seted up to the position that corresponds slider (10) on the pore wall of transmission hole (6), slider (10) sliding connection is in spout (11) that correspond, slider (10) are close to one end fixedly connected with spring (12) of pull rod (5), the other end fixed connection of spring (12) is on the corresponding cell wall of spout (11).

2. A filter screen fixing device according to claim 1, wherein the sealing assembly comprises a sealing ring (13), a sealing groove (14) is annularly formed on the outer wall of the air duct (2), the sealing ring (13) is arranged in the sealing groove (14), and the outer annular wall of the sealing ring (13) is arranged on the inner annular wall of the support ring (4).

3. A filter screen fixing device according to claim 1, characterized in that the air duct (2), the filter screen body (3), the support ring (4) and the pull rod (5) are coaxially arranged.

4. A filter screen fixing device according to claim 1, characterized in that a slide bar (16) is fixedly connected in the slide groove (11), the slide bar (16) is arranged through the slide block (10), and the slide block (10) is slidably connected to the bar wall of the slide bar (16).

5. The filter screen fixing device of claim 1, wherein the wall of the pull hole is provided with four rolling grooves which are uniformly arranged in a circular shape and are equidistant from the pull rod (5) as a center, rolling balls (17) are arranged in the rolling grooves, the rolling balls (17) pass through the notches of the rolling grooves, and the rolling balls (17) are connected to the rod wall of the pull rod (5) in a rolling manner.

6. A filter screen fixing device according to claim 1, characterized in that four fixed pulleys (15) are fixedly connected to the inner wall of the air duct (2) at positions corresponding to the four transmission holes (6) in an annular shape at uniform intervals, and the transmission rope (9) is arranged around the corresponding fixed pulleys (15).