Variable-pitch filter element carrier and variable-pitch screw

Abstract

The invention discloses a variable-pitch filter element carrier and a variable-pitch screw rod, and relates to the technical field of filter element production. The carrier comprises a carrier body, wherein the carrier body is provided with a driving part; the multiple adjusting assemblies are movably assembled on the carrier body and used for bearing a filter element, and each adjusting assembly comprises a mounting base and a bearing part detachably assembled on the mounting base; and the interval adjusting part is fixedly assembled on an output shaft of the driving part, a plurality of concave parts which are obliquely arranged are formed in the interval adjusting part, and the concave parts are rotationally matched with the mounting bases corresponding to the adjusting assemblies so as to adjust the interval between the adjusting assemblies. By the adoption of the technical scheme, the device has the advantages that the distance and the width of the carriers can be rapidly adjusted, the adjusting efficiency is high, the precision is high, universality is improved, and cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of filter element manufacturing technology, specifically to a variable pitch filter element carrier and a variable pitch screw. Background Technology

[0002] In the field of filter element manufacturing, filter elements are folded and bent paper structures whose specifications and dimensions need to be flexibly adjusted according to the installation requirements of different air conditioner models. During the molding, processing, and assembly of filter elements, the filter element carrier, as a core tooling, plays a crucial role in fixing the shape of the filter element and adapting it to filter elements of different specifications and sizes. It is a fundamental component ensuring the processing accuracy and molding quality of the filter element. Currently, existing filter element carriers have two main defects. One type is a fixed structural design with no adjustable dimensions. Fixed-structure filter element carriers have extremely poor versatility, requiring corresponding carriers for different specifications of filter elements, significantly increasing the cost of carrier quantities. The other type, while adjustable, requires manual splicing or assembly of each diaphragm. Manually adjustable filter element carriers suffer from low adjustment accuracy, low operating efficiency, and poor adaptability, neither of which can meet the requirements for efficient and high-precision processing and assembly of filter elements. Summary of the Invention

[0003] The purpose of this invention is to address the deficiencies and shortcomings of the prior art by providing a variable pitch filter carrier and a variable pitch screw, which at least solves one of the aforementioned technical problems. It has the advantages of quickly adjusting the spacing and width of the carrier, with high adjustment efficiency and high precision, improving versatility and reducing costs.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is: a variable-pitch filter carrier, comprising: The vehicle body is provided with a drive unit; An adjustment assembly, comprising multiple components movably mounted to the carrier body for supporting filter elements, includes: a mounting base, and a support member detachably mounted to the mounting base; and A spacing adjustment component is fixedly mounted on the output shaft of the drive unit. The spacing adjustment component has multiple inclined recesses, and each of the multiple recesses is rotatably engaged with the mounting base of the corresponding adjustment component to adjust the spacing between the multiple adjustment components.

[0005] The present invention further provides that the spacing adjustment component includes a rod rotatably assembled within the carrier body, and a plurality of recesses are distributed along the axial direction of the rod, with each recess having a different inclination angle relative to the axis of the rod.

[0006] The present invention further provides that the plurality of recesses are strip-shaped recesses, and the beginning and end of each strip-shaped recess are not connected to each other.

[0007] The present invention further provides that the wall thickness between adjacent recesses is equal or unequal.

[0008] The present invention further provides that the vehicle body is provided with a plurality of limiting guide rails, and the adjusting component slides in cooperation with the limiting guide rails.

[0009] The present invention further provides that the plurality of limiting guide rails are divided into a first guide rail, a second guide rail and a third guide rail, and the plurality of adjusting components are divided into a first adjusting group slidably assembled on the first guide rail, a second adjusting group slidably assembled on the second guide rail, and a third adjusting group slidably assembled on the third guide rail.

[0010] The present invention further comprises: a slider slidably mounted on the limiting guide rail, a mounting base disposed on the slider, and a carrier detachably mounted on the mounting base.

[0011] The present invention further provides that the mounting base is provided with a limiting protrusion on the side facing the spacing adjustment member, the limiting protrusion being embedded in the recess and sliding along the inclined extension direction of the recess.

[0012] To achieve the above objectives, another technical solution adopted by the present invention is: a variable pitch screw, comprising: a rod body, and a plurality of recesses inclinedly disposed on the rod body.

[0013] The present invention further provides that the inclination angles of each of the recesses relative to the axis of the rod are different, and the beginning and end of each of the recesses are not connected to each other. After adopting the above technical solution, the beneficial effects of the present invention are as follows: In the present invention, by setting an adjustment component and a spacing adjustment component, wherein the spacing adjustment component has multiple inclined recesses, and the multiple recesses are respectively rotatably engaged with the mounting base of the corresponding adjustment component, thereby driving the spacing adjustment component to rotate, which can drive multiple adjustment components to adjust the spacing synchronously, replacing the traditional manual adjustment method, effectively avoiding the accuracy error of manual adjustment, and greatly improving the spacing adjustment efficiency. At the same time, it eliminates the size limitation of fixed structure carriers, breaks through the adaptation limitation of single specification filter elements, and improves the versatility of the carrier. Furthermore, the adjustment component also includes a carrier component that can be detachably assembled on the mounting base. After driving multiple adjustment components to adjust to the set spacing, the bearing width of the carrier can be flexibly adjusted by replacing different specification carrier components. Combined with the adjustable characteristics of the spacing adjustment component, dual adjustment of spacing and width can be achieved, which can adapt to filter elements of different specifications and sizes. There is no need to equip special carriers for different models of filter elements, reducing the number of carriers to be prepared and reducing costs. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a structural schematic diagram of a variable-pitch filter carrier; Figure 2 This is an exploded structural diagram of a variable-pitch filter carrier; Figure 3 This is a schematic diagram of the front and rear view structure of the spacing adjustment component; Figure 4 It corresponds Figure 2 Enlarged diagram of section A in the middle; Figure 5 This is a schematic diagram of the variable pitch filter carrier from another perspective; Figure 6 It corresponds Figure 5 Cross-sectional schematic diagram of section AA; Figure 7 This is a schematic diagram of the adjustment component.

[0016] Explanation of reference numerals in the attached drawings: 100, vehicle body; 110, drive unit; 120, limiting guide rail; 121, first guide rail; 122, second guide rail; 123, third guide rail; 130, clearance hole; 140, receiving cavity; 150, bearing; 200, adjustment assembly; 210, first adjustment group; 220, second adjustment group; 230, third adjustment group; 240, slider; 250, mounting base; 251, limiting protrusion; 2511, connecting section; 2512, sliding section; 252, support frame; 2521, mounting groove; 253, fixing block; 254, fastener; 260, bearing component; 261, groove; 300, spacing adjustment component; 310, recess; 320, rod. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings.

[0018] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive element, but such modifications are protected by patent law as long as they fall within the scope of the claims of the present invention.

[0019] This embodiment relates to a variable-pitch filter carrier, referring to... Figures 1-3 It includes: vehicle body 100, adjustment assembly 200 and spacing adjustment component 300.

[0020] The carrier body 100 is a frame with an internal cavity 140 for accommodating the spacing adjustment component 300. The cavity 140 prevents external dust and other debris from entering the cavity, thus avoiding interference with the fit between the spacing adjustment component 300 and the adjustment assembly 200. A drive unit 110 is provided at one end of the carrier body 100 to output a stable rotational driving force to the spacing adjustment component 300. Specifically, the drive unit 110 can be a motor drive mechanism, a pneumatic drive mechanism, or a hand-cranked drive mechanism, etc.

[0021] Multiple adjustment components 200 are provided, all of which are slidably mounted on the surface of the carrier body 100. These multiple adjustment components 200 can stably support the filter element and adapt to the processing and molding requirements of filter elements of different sizes. Specifically, the adjustment component 200 includes a mounting base 250 and a support member 260. The mounting base 250 is slidably mounted on the carrier body 100, and one end of it is rotatably engaged with the recess 310. The support member 260 is detachably mounted on the mounting base 250, and the bearing width of the carrier can be flexibly adjusted by replacing different specifications of the support member 260.

[0022] It should be noted that the carrier component 260 is available in various specifications, with different specifications of carrier component 260 corresponding to different bearing widths, forming a standardized width adaptation system that can meet the bearing requirements of different filter element models and greatly improve the versatility of variable pitch filter element carriers.

[0023] The pitch adjustment component 300 is fixedly connected to the output shaft of the drive unit 110 so that the driving force of the drive unit 110 is directly transmitted to the pitch adjustment component 300 and converted into rotational force. The surface of the pitch adjustment component 300 is provided with a plurality of inclined recesses 310, and the plurality of recesses 310 respectively rotatably engage with the mounting base 250 of the corresponding adjustment component 200, and one end of the mounting base 250 slides along the extension path of the recesses 310.

[0024] Based on the above points, the drive unit 110 drives the spacing adjustment component 300 to rotate. Through the cooperation between the recess 310 and the mounting base 250, the rotational power is converted into the linear sliding power of the adjustment component 200, driving multiple adjustment components 200 to move synchronously to adjust the spacing. This replaces the traditional manual adjustment method, effectively avoiding the precision error of manual adjustment, and significantly improving the spacing adjustment efficiency. At the same time, it eliminates the size limitations of fixed structure carriers, breaks through the adaptation limitations of single-specification filter elements, and improves the versatility of the carrier. The carrier component 260 is detachably mounted on the mounting base 250. By replacing different specifications of carrier components 260, the bearing width of the carrier can be flexibly adjusted. The coordinated cooperation between the spacing adjustment component 300 and the detachable carrier component 260 achieves dual adjustment of spacing and width, which can adapt to filter elements of different specifications and sizes. It eliminates the need to equip different models of filter elements with special carriers, reduces the number of carriers to be manufactured, and lowers costs.

[0025] Specifically, in this embodiment, the variable-pitch filter carrier also includes a main control device (not shown), which is equipped with a touch screen for easy input of pitch parameters. The main control device is electrically connected to the drive unit 110 and is used to control the drive unit 110 to output driving force to drive the pitch adjustment component 300 to rotate, and to control the drive unit 110 to switch between forward and reverse rotation working modes. When the required pitch value is input in the touch screen of the main control device and the operation is started, the main control device can control the drive unit 110 to drive the pitch adjustment component 300 to rotate to a preset angle; the pitch adjustment component 300, through its inclined recess 310, cooperates with the rotation of the corresponding adjustment component 200, driving multiple adjustment components 200 to slide synchronously along a preset trajectory, so that the pitch between adjacent adjustment components 200 is maintained at the set pitch, and the pitches are all equal, ultimately realizing the automated, synchronized, and precise adjustment of the pitch of the variable-pitch filter carrier, effectively improving the adjustment efficiency and adjustment accuracy.

[0026] In this embodiment, refer to Figures 2-3 , Figure 6 The spacing adjustment component 300 includes a rod 320 rotatably mounted within the carrier body 100. One end of the rod 320 passes through the carrier body 100 and is coaxially and fixedly connected to the output shaft of the drive unit 110, which can stably transmit the rotational power of the drive unit 110 to each recess 310. The other end is rotatably mounted to the carrier body 100. Specifically, bearings 150 are provided at both ends of the carrier body 100. The bearings 150 are sleeved on the outside of the rotation shaft at both ends of the rod 320, effectively reducing frictional loss during the rotation of the rod 320 through rolling friction.

[0027] Furthermore, multiple recesses 310 are arranged along the axial direction of the rod 320, and each recess 310 is inclined relative to the axis of the rod 320. When the rod 320 is driven to rotate by the drive unit 110, the inclined recesses 310, through rotational engagement with the end of the mounting base 250, convert the rotational motion of the rod 320 into the linear sliding motion of the adjustment component 200 along the carrier body 100. Since the inclination angle of each recess 310 relative to the axis of the rod 320 is different, the linear driving displacement applied to the corresponding adjustment component 200 by each recess 310 differs when the rod 320 rotates by the same angle. This differentiated displacement design can accurately compensate for the initial position deviation of the adjustment component 200, ultimately achieving the goal of synchronous sliding of multiple adjustment components 200 and completely equal spacing between adjacent adjustment components 200. This significantly improves the adaptability of the variable-pitch filter carrier to filter elements of different lengths and specifications, and can meet the stable bearing requirements of filter elements of different sizes and different arrangement densities.

[0028] It should be noted that the recess 310 can be an arc-shaped groove, a V-shaped groove, or a rectangular groove, or other groove types. A rectangular groove is preferred. The rectangular groove has a simple structure, is easy to process and form, and the two sides of the groove wall are parallel, which can form a bidirectional limit on the mating end of the adjustment component 200. This embodiment does not make specific limitations here.

[0029] Specifically, the spacing adjustment member 300 has a columnar structure, and a plurality of recesses 310 are arranged along the axial direction of the spacing adjustment member 300. In some embodiments, the spacing adjustment member 300 may also have other structures such as a disc-shaped structure or a prism-shaped structure.

[0030] Furthermore, referring to Figures 2-3 Each of the multiple recesses 310 is a strip-shaped recess extending circumferentially along the rod 320, with a clear linear guide trajectory. This provides a stable limiting guide for one end of the adjusting component 200, ensuring that the adjusting component 200 slides linearly in a preset direction. Furthermore, the ends of each strip-shaped recess are not connected, making each recess 310 an independent transmission unit, preventing the adjusting component 200 from moving across recesses 310 during sliding. Simultaneously, the independent strip-shaped recesses, through their own length and extension trajectory, precisely limit the sliding stroke of the adjusting component 200, thereby enabling controllable adjustment of the maximum and minimum stroke of the spacing between the adjusting components 200, ensuring stable operation of the variable-pitch filter carrier within the preset spacing range.

[0031] It should be noted that the diameter of the rod 320 can be flexibly selected according to actual adjustment needs. The change in the diameter of the rod 320 will directly affect the length of the recess 310 itself or the length of its extension trajectory. The larger the diameter, the longer the recess 310 can be designed, and the greater the sliding stroke of the corresponding adjustment component 200. Conversely, the smaller the diameter, the smaller the stroke. By matching rods 320 with different diameters, the spacing adjustment requirements of filter elements of different specifications can be met, further improving the versatility of the carrier.

[0032] Furthermore, referring to Figure 3 and Figure 6 The wall thickness of adjacent recesses 310 on the rod 320 is equal. The equal wall thickness design ensures that the distribution spacing of each recess 310 on the rod 320 is uniform. Combined with the differential displacement compensation of each recess 310 at different tilt angles, the adjustment component 200 can achieve equidistant adjustment after sliding along the spacing adjustment component 300, which is suitable for the load-bearing requirements of conventional equal-fold density filter elements.

[0033] Specifically, the wall thickness of any group of adjacent recesses 310 exhibits a gradual change, meaning the wall thickness at the beginning of the group of recesses is less than the wall thickness at the end. Here, the beginning of the recess refers to the end where the mounting base 250 is embedded in the recess 310 during the initial assembly of the adjusting component 200; the end refers to the end of the recess 310 where the mounting base 250 is located when the adjusting component 200 slides to its maximum stroke. When the mounting base 250 of the adjusting component 200 is embedded in the beginning of the recess 310, the distance between adjacent adjusting components 200 reaches its minimum, meeting the load-bearing requirements of small-pitch filter cartridges. As the rod 320 continues to rotate and the mounting base 250 slides along the recess 310 towards the end, the distance between adjacent adjusting components 200 gradually increases with the wall thickness change until the mounting base 250 reaches its maximum, meeting the load-bearing requirements of large-pitch filter cartridges.

[0034] In some embodiments, the wall thickness between adjacent recesses 310 on the rod 320 is unequal, and the wall thickness gradually increases or decreases. This unequal wall thickness design alters the distribution spacing of the recesses 310. Combined with adjustments to the tilt angle, the adjusting assembly 200 can slide along the spacing adjusting member 300 to achieve unequal spacing adjustment, meeting the load-bearing requirements of filter elements with special folding densities. Furthermore, the multiple recesses 310 on the rod 320 can also adopt other distribution methods, further expanding the adaptability range for filter elements of different sizes and specifications.

[0035] Specifically in this embodiment, refer to Figure 3 The tilt angles of the multiple recesses 310 gradually increase from right to left along the axial direction of the rod 320. This gradual angle variation of the recesses 310 creates a linear mapping between the displacement of the adjusting component 200 and the rotation angle of the rod 320. The main control device can precisely control the rotation angle of the rod 320 to obtain the target spacing, effectively reducing adjustment errors and improving the accuracy and repeatability of spacing adjustment. Simultaneously, the gradually changing angles of the recesses 310 ensure a more uniform sliding speed for each adjusting component 200, guaranteeing a smooth adjustment process.

[0036] In some embodiments, the tilt angle of the plurality of recesses 310 may also gradually decrease from left to right along the axial direction of the rod 320, or gradually increase from the middle to the left and right sides along the axial direction of the rod 320, etc., to adapt to different filter element carrying layout requirements.

[0037] Specifically, the tilt angle difference between adjacent recesses 310 is between 0.5° and 10°, and the tilt angle difference can be 0.5°, 0.6°, 0.7°, 0.8°, 0.9°, 1.0°, 1.2°, 1.5°, 1.8°, 2.0°, 2.5°, 3.0°, 3.5°, 4°, 5°, 6°, 7°, 8°, 9°, or 10°, etc. By setting different tilt angle differences between adjacent recesses 310, the differentiated displacement of each adjustment component 200 can be precisely controlled, thereby matching the filter element spacing requirements of different specifications. The specific value of the above-mentioned angle difference can be flexibly adjusted according to actual parameters such as the length of the carrier body 100 and the number of adjustment components 200 configured. This embodiment does not impose specific limitations on this.

[0038] Specifically in this embodiment, refer to Figure 3 Since the inclination angle of the first recess 310 at the right end of the rod 320 is 0°, and the recess 310 cooperates with the adjustment component 200 at the right end of the vehicle body 100, when the rod 320 is driven to rotate, because the recess 310 has no inclination angle, it cannot apply a driving force along the preset sliding direction to the adjustment component 200 that cooperates with it. Therefore, the adjustment component 200 at the right end of the vehicle body 100 does not move along the sliding direction.

[0039] In this embodiment, refer to Figure 1 , Figures 5-7 The top of the carrier body 100 is provided with multiple limiting guide rails 120, and multiple adjusting components 200 slide in cooperation with the multiple limiting guide rails 120. Specifically, there are six limiting guide rails 120, which are symmetrically distributed on both sides of the top of the carrier body 100. The symmetrical layout distributes the load of the adjusting components 200 and the filter element, improving the smoothness of the sliding of the adjusting components 200 and the structural rigidity of the carrier body 100. It should be noted that the number of limiting guide rails 120 can also be set to two, four or eight, etc., and this embodiment does not limit this.

[0040] Furthermore, referring to Figure 5 and Figure 7The six limiting guide rails 120 are divided into a first guide rail 121, a second guide rail 122, and a third guide rail 123. Specifically, the first guide rail 121, the second guide rail 122, and the third guide rail 123 are symmetrically distributed in pairs on both sides of the top of the vehicle body 100. The second guide rail 122 is installed on the outer edge of the top of the vehicle body 100, and the first guide rail 121 is installed between the second guide rail 122 and the third guide rail 123. This layered symmetrical layout balances the load and ensures smooth adjustment. The multiple adjustment components 200 are correspondingly divided into a first adjustment group 210 that slides onto the first guide rail 121, a second adjustment group 220 that slides onto the second guide rail 122, and a third adjustment group 230 that slides onto the third guide rail 123. By modular grouping, the three sets of adjustment components 200 can be staggered and slidably assembled in different spatial positions, avoiding the problem of excessively large adjacent spacing in the initial position caused by the parallel arrangement of adjustment components 200, effectively improving the space utilization rate of the top of the carrier body 100, and adapting to the filter element carrying requirements with small spacing.

[0041] In some embodiments, the plurality of limiting guide rails 120 may be divided into only the first guide rail 121, or into the first guide rail 121 and the second guide rail 122. Similarly, the plurality of adjusting components 200 may be divided into only the first adjusting group 210, or into the first adjusting group 210 and the second adjusting group 220.

[0042] In this embodiment, refer to Figure 2 , Figure 4 and Figure 7 The first adjustment group 210, the second adjustment group 220, and the third adjustment group 230 each include a slider 240, a mounting base 250, and a carrier 260. The slider 240 is slidably mounted on the limiting guide rail 120. The mounting base 250 is fixedly mounted on the top of the slider 240 by bolts, and one end of the mounting base extends into the recess 310 of the spacing adjustment member 300. This allows the spacing adjustment member 300 to rotate, driving the mounting base 250 through the recess 310 to slide the slider 240 axially along the limiting guide rail 120, thus completing the power transmission. The carrier 260 is a sheet-like partition, detachably mounted on the end of the mounting base 250 away from the slider 240. This end away from the mounting base 250 is used to support the filter element. It should be noted that the carrier 260 can also be in other shapes; this embodiment does not limit this.

[0043] Specifically in this embodiment, refer to Figure 1To accommodate filter cartridges of varying widths, this solution employs a convenient adjustment method involving partial replacement of the carrier component 260. When the drive unit 110 rotates the pitch adjustment component 300, causing all adjustment components 200 to slide to the preset pitch, it is not necessary to replace all carrier components. Only the carrier components 260 of the two sets of adjustment components 200 located at the beginning and end need to be replaced with longer spacers, thus widening the variable-pitch filter cartridge carrier's support width. Replacing only the carrier components 260 at both ends provides stable support for the filter cartridge through extended support at both ends and uniform support in the middle. The carrier component 260 of the middle adjustment component 200 retains its original specifications, ensuring uniform force distribution on the filter cartridge's folded edges. Furthermore, to accommodate subsequent processing steps such as cutting and lamination of the filter cartridge, the outermost carrier component 260 of one adjustment component 200 can be replaced with a rectangular spacer. The end face of this rectangular spacer fits tightly against the filter cartridge's folded edges, and its flat end face can serve as a processing reference surface, facilitating positioning and calibration of subsequent processing equipment.

[0044] Specifically, the mounting base 250 includes a support frame 252, fixing blocks 253, and fasteners 254. The support frame 252 has a through mounting groove 2521, and two fixing blocks 253 are respectively installed at both ends of the support frame 252. One end of the carrier member 260 is embedded in the mounting groove 2521, and its two sides are exposed outside the mounting groove 2521. The two fixing blocks 253 symmetrically abut against the carrier member 260 from both sides. The fasteners 254 can be screws or bolts, etc., and are used to fix the fixing blocks 253 to the support frame 252, and also to fix the exposed sides of the carrier member 260. Furthermore, a groove 261 is provided on the side of the carrier 260. One end of the fastener 254 passes through the fixing block 253 and is inserted into and pressed against the groove 261 to securely lock the carrier 260 in the mounting groove 2521, preventing the carrier 260 from axially shifting, laterally shifting, or falling off during the process of carrying the filter element or adjusting and sliding. In some embodiments, the fastener 254 may also adopt other fastening devices.

[0045] Furthermore, referring to Figure 4 A limiting protrusion 251 is provided on the side of the mounting base 250 facing the spacing adjustment member 300. The limiting protrusion 251 slides along the inclined extension direction of the recess 310. Specifically, the limiting protrusion 251 includes a connecting section 2511 and a sliding section 2512. One end of the connecting section 2511 is connected to the bottom of the mounting base 250 to accommodate the spatial position difference between the mounting base 250 and the recess 310. The sliding section 2512 is connected to the other end of the connecting section 2511, and the sliding section 2512 is inserted into the recess 310 and slides along the extension path of the recess 310. The two side walls of the recess 310 abut against the sliding section 2512 to form a bidirectional limiting, ensuring the accuracy of power transmission and preventing sliding deviation.

[0046] It should be noted that the sliding segment 2512 can be other shapes such as a cylinder, cone, or rectangle, and is preferably a cylinder. This embodiment does not specifically limit this.

[0047] Furthermore, referring to Figure 2 The top of the vehicle body 100 is also provided with a clearance hole 130, through which the clearance limiting protrusion 251 extends and is inserted into the recess 310 of the spacing adjustment member 300. Specifically, the clearance hole 130 is elongated and can accommodate the travel requirements of the limiting protrusions 251 of multiple adjustment components 200 as they slide with the adjustment components 200. In some embodiments, the clearance hole 130 may also be of other shapes to accommodate the requirements of limiting protrusions 251 with different structures or sliding trajectories.

[0048] This embodiment also relates to a variable pitch screw, including: a rod body 320, and a plurality of recesses 310 inclinedly disposed on the rod body 320.

[0049] Furthermore, the inclination angles of each recess 310 relative to the axis of the rod 320 are different, and the beginning and end of each recess 310 are not connected to each other.

[0050] The above is only used to illustrate the technical solution of the present invention and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention, as long as they do not depart from the spirit and scope of the technical solution of the present invention, should be covered within the scope of the claims of the present invention.

Claims

1. A variable length filter cartridge carrier characterized by, include: The vehicle body (100) is provided with a drive unit (110); An adjustment assembly (200) is provided with multiple components and is movably mounted on the carrier body (100) for carrying the filter element. The adjustment assembly (200) includes: a mounting base (250) and a carrier member (260) detachably mounted on the mounting base (250). as well as A spacing adjustment component (300) is fixedly mounted on the output shaft of the drive unit (110). The spacing adjustment component (300) has a plurality of inclined recesses (310). The plurality of recesses (310) are respectively rotatably engaged with the mounting base (250) of the corresponding adjustment component (200) to adjust the spacing between the plurality of adjustment components (200).

2. The variable-pitch filter carrier according to claim 1, characterized in that, The spacing adjustment member (300) includes a rod (320) rotatably mounted in the carrier body (100), and a plurality of recesses (310) are distributed along the axial direction of the rod (320), with each recess (310) having a different inclination angle relative to the axis of the rod (320).

3. The variable-pitch filter carrier according to claim 2, characterized in that, Each of the recesses (310) is a strip-shaped recess, and the beginning and end of each strip-shaped recess are not connected to each other.

4. The variable-pitch filter carrier according to claim 2, characterized in that, The wall thickness between adjacent recesses (310) may be equal or unequal.

5. The variable-pitch filter carrier according to any one of claims 1-4, characterized in that, The vehicle body (100) is also provided with a plurality of limiting guide rails (120), and the adjusting component (200) slides in cooperation with the limiting guide rails (120).

6. The variable-pitch filter carrier according to claim 5, characterized in that, The plurality of limiting guide rails (120) are divided into a first guide rail (121), a second guide rail (122) and a third guide rail (123), and the plurality of adjusting components (200) are divided into a first adjusting group (210) slidably mounted on the first guide rail (121), a second adjusting group (220) slidably mounted on the second guide rail (122), and a third adjusting group (230) slidably mounted on the third guide rail (123).

7. The variable-pitch filter carrier according to claim 6, characterized in that, The first adjustment group (210) and / or the second adjustment group (220) and / or the third adjustment group (230) include: a slider (240) slidably mounted on the limiting guide rail, a mounting base (250) disposed on the slider (240), and a carrier (260) detachably mounted on the mounting base (250).

8. The variable-pitch filter carrier according to claim 7, characterized in that, The mounting base (250) is provided with a limiting protrusion (251) on the side facing the spacing adjustment member (300). The limiting protrusion (251) is embedded in the recess (310) and slides along the inclined extension direction of the recess (310).

9. A variable pitch screw, characterized in that, include: The rod (320) and a plurality of recesses (310) inclinedly disposed on the rod (320).

10. The variable pitch screw according to claim 9, characterized in that, The inclination angles of each recess (310) relative to the axis of the rod (320) are different, and the beginning and end of each recess (310) are not connected to each other.

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