A throttling screw plug with filtering function

Abstract

This utility model relates to the field of throttling device technology and discloses a throttling screw plug with a filtering function. It includes a connecting cylinder, a filter cylinder threaded to one side of the connecting cylinder, and a throttling screw plug threaded to the other side of the connecting cylinder. The filter cylinder includes a filter cylinder body, with multiple filter holes fixedly arranged on the side of the filter cylinder body away from the connecting cylinder. A filter screen is fixedly arranged inside the filter cylinder body behind the multiple filter holes. This utility model features a filter cylinder structure that can be easily removed. Impurities in the liquid are first cleaned by the filter screen inside the cylinder. When the filter cylinder is removed, the impurities on the filter screen can be easily cleaned. If the filter screen is damaged by water flow, the filter holes at the front of the filter cylinder can still provide the same filtering effect. Because the filter holes do not need to filter most of the time, they are not easily clogged by impurities, increasing their service life.

Description

Technical Field

[0001] This utility model relates to the field of throttling device technology, and in particular to a throttling screw plug with a filtering function. Background Technology

[0002] A throttling plug is a component used to limit fluid flow. It regulates pressure and controls flow by changing the cross-sectional area of ​​the flow channel, thereby ensuring the long-term operational accuracy of the system. Fluids often contain solid particulate impurities. If these impurities enter the flow channel directly without filtration, they may cause blockage or wear, leading to uncontrolled flow, pressure fluctuations, or even system failure.

[0003] The existing patent (publication number CN204921217U) discloses "a filter-type throttling plug, which includes a throttling plug and a filter. The filter is a tubular component with one end open and the other end blind. The blind end has several filter holes penetrating the blind end. The throttling plug is detachably connected to the cavity of the filter and has a throttling hole in the center. This utility model combines the dual functions of throttling and filtration, solving the problem of impurity blockage, ensuring the throttling oil circuit is unobstructed for a long time, reducing the occurrence of downtime accidents, and significantly improving the reliability of the main unit operation. It has the advantages of simple structure, flexible combination, wide applicability, and easy cleaning, maintenance, and component replacement. It can also play a throttling role in environments with poor oil quality, and has good economic benefits and broad application prospects."

[0004] In the process of developing this application, the inventors discovered the following problems with the existing technology: the aforementioned filter-type throttling plug only filters through filter holes. If impurities clog the filter holes, it will cause a significant drop in flow rate, rendering the throttling plug unusable. Furthermore, its cleaning operation is relatively cumbersome, making it difficult to easily clean the blockage after removal. Additionally, it lacks a corresponding sealing device, allowing liquid to seep into the outside through the gaps at the connection between the throttling plug and the filter.

[0005] Therefore, those skilled in the art have provided a throttling plug with a filtering function to solve the problems mentioned in the background art. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a throttling plug with a filtering function. Its advantage is that it features a removable filter cylinder structure. Impurities in the liquid are first cleaned by the filter screen inside the cylinder. When the filter cylinder is removed, the impurities on the filter screen can be easily cleaned. If the filter screen is damaged by water flow, the filter holes at the front of the filter cylinder can achieve the same filtering effect. Since the filter holes do not need to filter most of the time, they are not easily clogged by impurities, thus increasing their service life.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a throttling plug with a filtering function, comprising a connecting cylinder, a filter cylinder being threadedly connected to one side of the connecting cylinder, and a throttling plug being threadedly connected to the other side of the connecting cylinder, the filter cylinder comprising a filter cylinder body, a plurality of filter holes being fixedly provided on the side of the filter cylinder body away from the connecting cylinder, and a filter screen being fixedly provided inside the filter cylinder body at a position behind the plurality of filter holes.

[0008] Furthermore, the connecting cylinder includes a connecting cylinder body, and a filter cylinder insertion plate is fixedly provided on the side of the filter cylinder body near the connecting cylinder body.

[0009] Furthermore, the filter cartridge insertion plate is fixedly provided with a filter cartridge thread, and the connecting cylinder body and the filter cartridge are threadedly connected.

[0010] Furthermore, a No. 1 sealing ring is fixedly installed on the main body of the connecting cylinder at the position behind the thread of the filter cylinder.

[0011] Furthermore, the throttling plug includes a throttling plug body, and a throttling plug thread is fixedly provided on the side of the throttling plug body near the connecting cylinder body, and the throttling plug thread is threadedly connected to the connecting cylinder body.

[0012] Furthermore, a second sealing ring is fixedly installed on the main body of the connecting cylinder at a position behind the throttling screw thread.

[0013] Furthermore, a liquid inlet hole is fixedly provided on the side of the throttling screw plug body away from the connecting cylinder body, and a throttling hole is fixedly provided on the side of the throttling screw plug body close to the connecting cylinder body.

[0014] This utility model has the following beneficial effects:

[0015] This invention proposes a throttling plug with a filtering function, featuring a filter cartridge structure that is easily removed via a threaded connection and includes a sealing ring. Impurities in the throttled liquid are cleaned by a filter screen inside the cartridge. Removing the filter cartridge allows for convenient cleaning of the filter screen. If the filter screen is damaged by water flow, a backup filter hole at the front of the filter cartridge, with the same pore size as the filter screen, provides the same filtering effect. Because the filter hole is not used for filtering most of the time, it is less prone to clogging by impurities, thus increasing its service life. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the throttling screw structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the filter cartridge structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of this utility model.

[0020] Legend:

[0021] 1. Connecting cylinder; 101. Connecting cylinder body; 102. No. 1 sealing ring; 103. No. 2 sealing ring; 2. Filter cylinder; 201. Filter cylinder body; 202. Filter cylinder thread; 203. Filter hole; 204. Filter screen; 205. Filter cylinder insertion plate; 3. Throttling plug; 301. Throttling plug body; 302. Throttling plug thread; 303. Throttling hole; 304. Liquid inlet hole. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Reference Figure 1 , Figure 3 , Figure 4 The present invention provides an embodiment of a throttling screw plug with a filtering function, comprising a connecting cylinder 1, a filter cylinder 2 threadedly connected to one side of the connecting cylinder 1, and a throttling screw plug 3 threadedly connected to the other side of the connecting cylinder 1. The filter cylinder 2 comprises a filter cylinder body 201, a plurality of filter holes 203 fixedly provided on the side of the filter cylinder body 201 away from the connecting cylinder 1, and a filter screen 204 fixedly provided inside the filter cylinder body 201 behind the plurality of filter holes 203. The connecting cylinder 1 comprises a connecting cylinder body 101, a filter cylinder insertion plate 205 fixedly provided on the side of the filter cylinder body 201 close to the connecting cylinder body 101, a filter cylinder thread 202 fixedly provided on the filter cylinder insertion plate 205, the connecting cylinder body 101 and the filter cylinder thread 202 being threadedly connected, and a first sealing ring 102 fixedly provided on the connecting cylinder body 101 behind the filter cylinder thread 202.

[0024] Specifically, after being throttled by the throttling plug 3, the liquid flows into the connecting cylinder 1 and then into the filter cylinder 2. The filter cylinder insertion plate 205 is inserted into the connecting cylinder body 101, passing through the first sealing ring 102. The connecting cylinder body 101 has threads corresponding to the filter cylinder threads 202. Twisting the filter cylinder insertion plate 205 connects the filter cylinder threads 202 and the connecting cylinder body 101. The liquid inside the connecting cylinder body 101 then passes through the filter screen 204, which filters out solid particles. When cleaning the filter screen 204, simply unscrew the filter cylinder 2 to remove the filter cylinder insertion plate 205, allowing for easy cleaning of the filter screen 204 inside the filter cylinder body 201. If the filter screen 204 is damaged by water flow, solid particles in the liquid will be blocked at the filter holes 203. Because the filter holes 203 do not participate in filtration most of the time, they are not easily clogged by solid impurities.

[0025] Reference Figure 1 , Figure 2 , Figure 4 The throttling plug 3 includes a throttling plug body 301. A throttling plug thread 302 is fixedly provided on the side of the throttling plug body 301 near the connecting cylinder body 101. The throttling plug thread 302 is threadedly connected to the connecting cylinder body 101. A second sealing ring 103 is fixedly provided on the connecting cylinder body 101 behind the throttling plug thread 302. An inlet hole 304 is fixedly provided on the side of the throttling plug body 301 away from the connecting cylinder body 101. A throttling hole 303 is fixedly provided on the side of the throttling plug body 301 near the connecting cylinder body 101.

[0026] Specifically, the throttling plug body 301 is inserted into the connecting cylinder body 101, passing through the second sealing ring 103. The connecting cylinder body 101 has threads corresponding to the throttling plug thread 302. Tightening the throttling plug body 301 connects the throttling plug thread 302 with the connecting cylinder body 101. When liquid from the external flow channel enters the throttling plug 3, it enters the inlet hole 304 and is throttled by the throttling hole 303 before entering the connecting cylinder body 101.

[0027] Working principle: The filter cartridge insertion plate 205 and the throttling plug body 301 are inserted into both ends of the connecting cylinder body 101 and tightened to secure them. Sealing rings 102 and 103 effectively prevent liquid leakage at the connection point. Liquid from the external flow channel then enters the throttling plug 3, flows into the inlet hole 304, and is throttled by the throttling hole 303 before entering the connecting cylinder body 101. It then enters the filter cartridge 2, where the filter screen 204 filters solid particles. If the filter screen 204 is damaged by water flow, solid particles in the liquid will be blocked at the filter holes 203. The filter holes 203 and the filter screen 204 have similar pore sizes. The filter holes 203 do not participate in filtration most of the time, making them less prone to clogging by solid impurities and effectively increasing their service life.

[0028] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A throttling plug with filtering function, comprising a connecting cylinder (1), characterized in that: A filter cylinder (2) is threadedly connected to one side of the connecting cylinder (1), and a throttling plug (3) is threadedly connected to the other side of the connecting cylinder (1). The filter cylinder (2) includes a filter cylinder body (201). Multiple filter holes (203) are fixedly provided on the side of the filter cylinder body (201) away from the connecting cylinder (1). A filter screen (204) is fixedly provided inside the filter cylinder body (201) at a position behind the multiple filter holes (203).

2. A throttling screw plug with filtering function according to claim 1, characterized in that: The connecting cylinder (1) includes a connecting cylinder body (101), and a filter cylinder insertion plate (205) is fixedly provided on the side of the filter cylinder body (201) near the connecting cylinder body (101).

3. A throttling screw plug with filtering function according to claim 2, characterized in that: The filter cartridge insertion plate (205) is fixedly provided with a filter cartridge thread (202), and the connecting cylinder body (101) and the filter cartridge thread (202) are threadedly connected.

4. A throttling screw plug with filtering function according to claim 3, characterized in that: A sealing ring (102) is fixedly installed on the main body (101) of the connecting cylinder behind the filter cylinder thread (202).

5. A throttling screw plug with filtering function according to claim 1, characterized in that: The throttling plug (3) includes a throttling plug body (301), and a throttling plug thread (302) is fixedly provided on the side of the throttling plug body (301) near the connecting cylinder body (101), and the throttling plug thread (302) is threadedly connected to the connecting cylinder body (101).

6. A throttling screw plug with filtering function according to claim 5, characterized in that: The connecting cylinder body (101) is fixedly provided with a second sealing ring (103) at a position behind the throttling screw thread (302).

7. A throttling screw plug with filtering function according to claim 5, characterized in that: The throttling screw plug body (301) is fixedly provided with a liquid inlet hole (304) on the side away from the connecting cylinder body (101), and the throttling screw plug body (301) is fixedly provided with a throttling hole (303) on the side close to the connecting cylinder body (101).

Images