A filter having an in-line extension tube structure
By introducing a built-in cleaning mechanism into the filter, the problem of filter clogging is solved by utilizing the coordinated movement of a scraper and a lead screw, enabling rapid removal of dirt, ensuring the normal operation of the filter and preventing leakage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG TAIKE PRESSURE VESSEL CO LTD
- Filing Date
- 2025-07-30
- Publication Date
- 2026-06-26
AI Technical Summary
Existing filters with embedded extension tube structures are prone to filter element clogging during use, leading to pressure exceeding alarm values or even leakage, and cannot effectively solve the filter element clogging problem.
A filter with a built-in dirt removal mechanism was designed, including components such as a drain cover, scraper, dirt collection screen, sealing plate and screw. The scraper removes dirt and the screw rotation enables the dirt to be quickly discharged, preventing filter element clogging.
It effectively removes lumps and dirt, reduces the risk of filter clogging, ensures the normal operation of the filter, and prevents leakage.
Smart Images

Figure CN224404596U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of filter technology, specifically to a filter with an embedded extension tube structure. Background Technology
[0002] Filters with an embedded extension tube structure typically refer to telescopic filters, primarily used in pipelines transporting media. They are usually installed at the inlet end of pressure reducing valves, relief valves, level control valves, or other equipment to remove impurities from the media, protecting the valves and equipment for normal operation.
[0003] Currently, during actual material transfer, the filter element of the embedded extension tube structure may become clogged due to installation problems or sudden changes in pressure difference. As the clogging of the filter element worsens, the internal pressure of the filter is very likely to exceed the alarm value, which may cause leakage problems in severe cases.
[0004] In view of this, a filter with an embedded extension tube structure was designed to solve the above problems. Utility Model Content
[0005] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.
[0006] Therefore, the technical solution adopted by this utility model is as follows:
[0007] A filter with an embedded extension tube structure includes a filter mechanism and a built-in cleaning mechanism disposed on the filter mechanism. The filter mechanism includes a body, a connecting pipe assembly disposed on one side of the top of the body, and a pull rod disposed within the connecting pipe assembly and extending into the inner cavity of the body. The built-in cleaning mechanism includes a drain hood installed inside the body, a scraper installed in the inner cavity of the drain hood, a base mounted at the bottom of the inner cavity of the drain hood, a sludge collection screen plate disposed on the top of the base, a first lead screw movably mounted on the sludge collection screen plate and extending outside the drain hood, a sealing plate movably mounted in the base, and a traction member movably mounted on the sealing plate. A groove is formed at the top of the inner end of the sludge collection screen plate, and the other end of the traction member is movably mounted in the groove.
[0008] In a preferred embodiment, the present invention may be further configured as follows: the built-in cleaning mechanism further includes a base plate installed between the base support and the drain cover, a top plate installed at the top of the drain cover cavity, a scale drain faucet installed at the outer end of the drain cover, a baffle movably installed inside the scale drain faucet, and a second lead screw movably installed at the top of the baffle and extending to the outside of the scale drain faucet.
[0009] In a preferred embodiment, the present invention can be further configured such that: a guide hole is provided at the bottom of the base, and an inclined slope is provided at the end of the base facing the baffle.
[0010] In a preferred embodiment, the present invention can be further configured such that a drain outlet is provided inside the sludge collection screen plate near the baffle.
[0011] In a preferred embodiment, the present invention can be further configured as follows: the filter mechanism further includes two lifting lugs disposed at the top of the body, a bottom flange installed at the bottom of the body, a combination bolt installed inside the bottom flange, a condenser end disposed at the bottom of the body, a connecting pipe installed on the other side of the top of the body, and a first flange disposed at the outer end of the connecting pipe.
[0012] In a preferred embodiment, the present invention can be further configured such that both the connecting pipe assembly and the connecting pipe are provided with insert-type internal spiral joints.
[0013] In a preferred embodiment, the present invention may be further configured such that the filter mechanism also includes a nameplate bracket mounted on one side of the exterior of the machine body and a nameplate mounted on the other side of the exterior of the machine body.
[0014] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows:
[0015] 1. This utility model adds a built-in dirt removal mechanism to the filter body. When the material flows along the inner cavity of the machine and passes through the built-in dirt removal mechanism, the lumps or dirt that have condensed due to the change in pressure difference can be effectively screened out. The screened lumps and dirt will be smoothly transferred to the drain faucet. When the dirt collection screen plate moves laterally along the scraper, the blocking plate that is pulled by linkage will separate the drain cover and the drain faucet cavity. Finally, the dirt and lumps can be quickly discharged, thereby reducing the clogging of the filter element by dirt or lumps. Attached Figure Description
[0016] Figure 1 This is a schematic diagram illustrating the use of this utility model;
[0017] Figure 2 This is a schematic diagram of the filter mechanism of this utility model;
[0018] Figure 3 This is a schematic diagram of the built-in dirt removal mechanism of this utility model;
[0019] Figure 4 This utility model Figure 1 Top view diagram;
[0020] Figure 5 This is a schematic diagram of the connector assembly and tie rod of this utility model.
[0021] Figure label:
[0022] 100. Filter mechanism; 110. Body; 1101. Bottom flange; 1102. Condenser end; 120. Nameplate bracket; 130. Nameplate; 140. Connecting pipe; 1401. First flange; 150. Connecting pipe assembly; 1501. Tie rod; 160. Insert-type internal spiral joint; 170. Combination bolt; 180. Lifting lug;
[0023] 200. Built-in cleaning mechanism; 210. Sewage hood; 2101. Base plate; 2102. Top plate; 220. Scraper; 230. First lead screw; 240. Sludge collection screen plate; 2401. Sludge outlet; 2402. Groove; 2403. Traction component; 250. Base support; 2501. Guide hole; 260. Sealing plate; 270. Scale discharge faucet; 280. Baffle; 290. Second lead screw. Detailed Implementation
[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.
[0025] It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of this invention.
[0026] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, providing a filter with an embedded extension tube structure.
[0027] Example 1:
[0028] Combination Figures 1 to 5 As shown, the present invention provides a filter with an embedded extension tube structure, including a filter mechanism 100 and a built-in dirt removal mechanism 200 disposed on the filter mechanism 100. The built-in dirt removal mechanism 200 is used to screen out dirt and lumps in the material passing through the filter mechanism 100.
[0029] The filter mechanism 100 includes a body 110, a pipe assembly 150 disposed on one side of the top of the body 110, and a pull rod 1501 disposed in the pipe assembly 150 and extending into the inner cavity of the body 110.
[0030] The built-in cleaning mechanism 200 includes a drain cover 210 installed inside the body 110, a top plate 2102 installed at the top of the inner cavity of the drain cover 210, a scraper 220 installed in the inner cavity of the drain cover 210, a bottom support 250 installed at the bottom of the inner cavity of the drain cover 210, a sludge collection screen plate 240 set at the top of the bottom support 250, a first lead screw 230 movably installed on the sludge collection screen plate 240 and extending through to the outside of the drain cover 210, a sealing plate 260 movably installed inside the bottom support 250, and a traction member 2403 movably installed on the sealing plate 260.
[0031] A groove 2402 is provided at the top of the inner end of the sludge collection screen plate 240, and the other end of the traction member 2403 is movably installed in the groove 2402;
[0032] The bottom of the base 250 is provided with a guide hole 2501, and the end of the base 250 facing the baffle 280 is provided with an inclined slope.
[0033] When the material enters the inner cavity of the machine body 110, it will enter along the top plate 2102 and then move towards the top of the sludge collection screen plate 240 along the inclined surface of the scraper 220. Finally, the material will be squeezed out along the drain port 2401 under pressure. The squeezed and filtered material will flow back along the guide hole 2501 and finally enter the lower half cavity of the machine body 110. The lumps and dirt that are filtered by the drain port 2401 and remain will be blocked in the inner cavity of the descaling faucet 270 under pressure.
[0034] When it is necessary to periodically remove lumps and dirt, the first lead screw 230 of the same specification is rotated forward until the first lead screw 230 drives the sludge collection screen plate 240 to retract into the inner cavity of the machine body 110. As the sludge collection screen plate 240 moves laterally, the traction component 2403 will also drive the sealing plate 260 to flip upward until the outer end of the sealing plate 260 is attached to the inner wall of the drain hood 210. Then, the second lead screw 290 is adjusted to rotate forward until the second lead screw 290 drives the baffle 280 to rise, and the lumps and dirt accumulated in the drain faucet 270 can be effectively drained.
[0035] Example 2:
[0036] Combination Figure 3 As shown, based on Embodiment 1, the built-in cleaning mechanism 200 also includes a base plate 2101 installed between the base support 250 and the drain cover 210, a scale drain faucet 270 installed at the outer end of the drain cover 210, a baffle 280 movably installed inside the scale drain faucet 270, and a second lead screw 290 movably installed at the top of the baffle 280 and extending through to the outside of the scale drain faucet 270.
[0037] The sludge collection screen plate 240 has a sludge outlet 2401 inside at one end near the baffle 280.
[0038] Preferably, the top plate 2102 has an overall annular structure, and a circular hole is provided in the middle of the top plate 2102 for guiding materials.
[0039] The trapezoidal cavity formed by the scraper 220, the base support 250 and the base plate 2101 is used to provide effective protection for the threaded section of the sludge collection screen plate 240 and the first lead screw 230.
[0040] The guide hole 2501 has a cylindrical structure. After being separated by the sludge collection screen plate 240 and the baffle plate 280, the material is transferred by the double cavity of the scale discharge faucet 270 and the sewage discharge hood 210. The filtered material is then smoothly discharged along the guide hole 2501 of the cylindrical structure.
[0041] Example 3:
[0042] Combination Figures 2 to 5 As shown, in the above embodiment, the filter mechanism 100 further includes two lifting lugs 180 disposed at the top of the body 110, a bottom flange 1101 installed at the bottom of the body 110, a combination bolt 170 installed in the bottom flange 1101, a condenser end 1102 disposed at the bottom of the body 110, a pipe 140 installed on the other side of the top of the body 110, and a first flange 1401 disposed at the outer end of the pipe 140.
[0043] Both the pipe assembly 150 and the pipe 140 are provided with insert-type internal spiral connectors 160;
[0044] The filter mechanism 100 also includes a nameplate bracket 120 mounted on one side of the exterior of the body 110 and a nameplate 130 mounted on the other side of the exterior of the body 110.
[0045] Preferably, N1 is the air inlet, N2 is the air outlet, N3 is the pressure gauge port, N4 is the condensate outlet or drain port, and N5 and N6 are the differential pressure gauge ports.
[0046] The connecting pipe assembly 150 has 12 holes at the bend in the inner cavity of the body 110, and the top of the pull rod 1501 is located at the center of the 12 holes.
[0047] The working principle and usage process of this utility model: Currently, filters with embedded extension tube structures will experience certain damage during actual use. As the filter is used for a long time, dirt will accumulate in the filter element due to material transfer and pressure difference changes, which may cause the filter element to become clogged in severe cases.
[0048] When the filter is used for a long time and dirt accumulates, by controlling the first lead screw 230 to rotate forward, as the first lead screw 230 continues to rotate, the dirt collection screen plate 240, which is movably installed at the inner end of the first lead screw 230, will be pulled and retract along the top of the base 250, and the scraper 220 installed at the top of the inner cavity of the drain cover 210 will scrape the dirt accumulated on the top of the dirt collection screen plate 240 laterally.
[0049] As the sludge collection screen plate 240 continues to extend, the traction member 2403, which is movably installed inside the groove 2402, will be subjected to traction force. Eventually, the traction member 2403 will pull the sealing plate 260 upward until the inclined surface of the outer end of the sealing plate 260 is attached to the inner wall of the drain cover 210. At this time, the scraped dirt will be blocked by the sealing plate 260 in the cavity separated by the drain cover 210 and the scale drain faucet 270.
[0050] Next, control the second lead screw 290 to rotate forward, and the baffle 280, which is movably installed at the bottom of the second lead screw 290, will be lifted upward under pressure, and the dirt stored in the inner cavity of the discharge faucet 270 can be quickly emptied. After the dirt is emptied, reverse the second lead screw 290 until the baffle 280 closes the discharge faucet 270 again. After the first lead screw 230 reverses, it will also push the sludge collection screen plate 240 to quickly reset. At this time, the inner cavity of the machine body 110 can form an effective passage through the sludge discharge hood 210, so as to filter the dirt formed by pressure difference during material transfer.
[0051] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. A filter with an in-line extended tube structure comprising a filter mechanism (100), characterized in that, It also includes a built-in cleaning mechanism (200) disposed on the filter mechanism (100); The filter mechanism (100) includes a body (110), a pipe assembly (150) disposed on one side of the top of the body (110), and a pull rod (1501) disposed in the pipe assembly (150) and extending into the inner cavity of the body (110). The built-in cleaning mechanism (200) includes a drain cover (210) installed inside the body (110), a scraper (220) installed in the inner cavity of the drain cover (210), a base support (250) installed at the bottom of the inner cavity of the drain cover (210), a sludge collection screen plate (240) set on the top of the base support (250), a first lead screw (230) movably installed on the sludge collection screen plate (240) and extending to the outside of the drain cover (210), a sealing plate (260) movably installed inside the base support (250), and a traction member (2403) movably installed on the sealing plate (260). The top of the inner end of the sludge collection screen plate (240) is provided with a groove (2402), and the other end of the traction member (2403) is movably installed in the groove (2402).
2. The filter with an in-line extension tube structure of claim 1, wherein, The built-in cleaning mechanism (200) also includes a base plate (2101) installed between the base (250) and the drain cover (210), a top plate (2102) installed at the top of the inner cavity of the drain cover (210), a scale drain faucet (270) installed at the outer end of the drain cover (210), a baffle (280) movably installed inside the scale drain faucet (270), and a second lead screw (290) movably installed at the top of the baffle (280) and extending to the outside of the scale drain faucet (270).
3. The filter with an in-line extension tube structure of claim 1, wherein, The bottom of the base (250) is provided with a guide hole (2501), and the end of the base (250) facing the baffle (280) is provided with an inclined slope.
4. The filter with an in-line extension tube structure of claim 1, wherein, The sludge collection screen plate (240) has a sludge outlet (2401) inside the end near the baffle (280).
5. A filter with an embedded extension tube structure according to claim 1, characterized in that, The filter mechanism (100) also includes two lifting lugs (180) at the top of the body (110), a bottom flange (1101) at the bottom of the body (110), a combination bolt (170) installed in the bottom flange (1101), a condenser end (1102) at the bottom of the body (110), a pipe (140) installed on the other side of the top of the body (110), and a first flange (1401) at the outer end of the pipe (140).
6. A filter with an embedded extension tube structure according to claim 1, characterized in that, Both the pipe assembly (150) and the pipe (140) are provided with insert-type internal spiral joints (160).
7. A filter with an embedded extension tube structure according to claim 1, characterized in that, The filter mechanism (100) also includes a nameplate bracket (120) installed on one side of the exterior of the body (110) and a nameplate (130) installed on the other side of the exterior of the body (110).