Filtering type bolt

Abstract

The utility model provides a filtering type bolt which comprises a bolt body. An annular filter cavity is formed in the peripheral wall of the bolt body, an annular filter screen is arranged on the outer edge of the filter cavity, the filter screen and the bolt body are coaxially arranged, and the two ends of the filter screen are fixed to one end of the filter cavity respectively and sealed in the circumferential direction. An outflow channel with an opening in one end is axially formed in the bolt body, an inflow channel is formed in the portion, located between the filtering cavity and the outflow channel, of the bolt body, and the two ends of the inflow channel communicate with the filtering cavity and the outflow channel correspondingly; under the action of the filter screen, the filter screen can prevent impurities mingled in fluid from entering the inflow channel and the outflow channel, so that the impurities mingled in the fluid can be prevented from entering a fluid control device located at the rear stage of the bolt, and the fluid control device can be effectively prevented from being blocked.

Description

Technical Field

[0001] This utility model relates to the field of bolt technology, and more specifically, to a filter bolt. Background Technology

[0002] Bolts are fastening devices used to connect two or more components. When bolts are used to connect fluid control components, they not only need to have a fastening function, but also need to allow fluid to flow through. To this end, bolts with internal fluid channels have appeared on the market. After the bolt is used to fix the fluid control component, the fluid channel inside the bolt allows fluid to pass through, thus satisfying the purposes of fastening and flow. However, in existing bolt structures with fluid channels, no filter structure is installed in the fluid channel inside the bolt. As a result, impurities mixed in with the fluid flow through the fluid channel inside the bolt and enter the fluid control device located downstream of the bolt, which can cause blockage of the fluid control device. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a filter bolt, which, under the action of a filter screen, can block impurities mixed in the fluid from entering the inlet and outlet channels, thereby preventing impurities mixed in the fluid from entering the fluid control device located after the bolt, thus effectively preventing the clogging of the fluid control device.

[0004] This utility model provides a filter bolt, including a bolt body; an annular filter cavity is provided on the outer peripheral wall of the bolt body, and an annular filter screen is provided at the outer edge of the filter cavity. The filter screen is coaxially arranged with the bolt body, and both ends of the filter screen are fixed to one end of the filter cavity and circumferentially sealed; an outflow channel with one end open is provided axially inside the bolt body, and an inflow channel is provided on the bolt body located between the filter cavity and the outflow channel. The two ends of the inflow channel are connected to the filter cavity and the outflow channel, respectively.

[0005] By adopting the above structure, this utility model can prevent impurities mixed in the fluid from entering the inlet and outlet channels under the action of the filter screen, thereby preventing impurities mixed in the fluid from entering the fluid control device located after the bolt, thus effectively preventing the clogging of the fluid control device.

[0006] In one possible implementation, the bolt body located between the filter chamber and the outlet channel is provided with two first through holes that are symmetrical from left to right and two second through holes that are symmetrical from front to back. The two first through holes and the two second through holes are spaced apart along the axial direction of the bolt body. Both ends of each first through hole are connected to the filter chamber and the outlet channel, respectively. Both ends of each second through hole are connected to the filter chamber and the outlet channel, respectively. The two first through holes and the two second through holes form an inlet channel. By setting the two first through holes and the two second through holes, and because the two first through holes are symmetrical from left to right and the two second through holes are symmetrical from front to back, the fluid from the filter chamber can flow into the outlet channel from multiple directions of the filter chamber, thereby improving the uniformity and reliability of the fluid entering the outlet channel. In addition, under the action of the two first through holes and the two second through holes, the efficiency of the fluid flowing into the outlet channel through the first through holes and the two through holes can be improved.

[0007] In one possible implementation, the inner peripheral wall of the filter screen is clearance-fitted with the inner sidewall of the filter chamber; by adopting this structure, the fluid can more easily flow through the filter screen and enter the filter chamber due to the clearance fit between the inner peripheral wall of the filter screen and the inner sidewall of the filter chamber.

[0008] In one possible implementation, the filter screen includes two symmetrically arranged semi-annular filter screens. The ends of the two filter screens are welded together to form an annular filter screen. The two ends of the filter screen in the axial direction are respectively welded and fixed to one end of the filter cavity and circumferentially sealed. With this structure, the filter screen can be reliably fixed at the outer edge of the filter cavity. Since the filter screen is formed by welding two semi-annular filter screens, it is easy to fix the filter screen formed by welding the two filter screens at the outer edge of the filter cavity. Attached Figure Description

[0009] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0010] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0011] Figure 3 This is a three-dimensional structural diagram of the bolt body. Detailed Implementation

[0012] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0013] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0014] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0015] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] See Figure 1-3 As shown, this application discloses a filter bolt, including a bolt body 1; an annular filter cavity 11 is provided on the outer peripheral wall of the bolt body 1, and an annular filter screen 2 is provided at the outer edge of the filter cavity 11. The filter screen 2 is coaxially arranged with the bolt body 1, and both ends of the filter screen 2 are fixed to one end of the filter cavity 11 and circumferentially sealed; an outflow channel 12 with one end open is provided axially inside the bolt body 1, and an inflow channel 13 is provided on the bolt body 1 located between the filter cavity 11 and the outflow channel 12. The two ends of the inflow channel 13 are respectively connected to the filter cavity 11 and the outflow channel 12.

[0017] Two first through holes 131 arranged symmetrically on the left and right sides and two second through holes 132 arranged symmetrically on the front and back sides are provided on the bolt body 1 located between the filter chamber 11 and the outlet channel 12. The two first through holes 131 and the two second through holes 132 are distributed at intervals along the axial direction of the bolt body 1. Both ends of each first through hole 131 are connected to the filter chamber 11 and the outlet channel 12, respectively. Both ends of each second through hole 132 are connected to the filter chamber 11 and the outlet channel 12, respectively. The two first through holes 131 and the two second through holes 132 form the inlet channel 13. By setting the two first through holes and the two second through holes, and because the two first through holes are arranged symmetrically on the left and right sides and the two second through holes are arranged symmetrically on the front and back sides, the fluid from the filter chamber can flow into the outlet channel from multiple directions of the filter chamber, thereby improving the uniformity and reliability of the fluid entering the outlet channel. In addition, under the action of the two first through holes and the two second through holes, the efficiency of the fluid flowing into the outlet channel through the first through holes and the two through holes can be improved.

[0018] The inner peripheral wall of the filter screen 2 is fitted with the inner side wall of the filter chamber 11 with a clearance. With this structure, the fluid can flow more easily through the filter screen and into the filter chamber due to the clearance between the inner peripheral wall of the filter screen and the inner side wall of the filter chamber.

[0019] The filter screen 2 includes two symmetrically arranged semi-annular filter screens. The ends of the two filter screens are welded together to form an annular filter screen 2. The two ends of the filter screen 2 in the axial direction are respectively welded and fixed to one end of the filter cavity 11 and circumferentially sealed. With this structure, the filter screen can be reliably fixed at the outer edge of the filter cavity. Since the filter screen is formed by welding two semi-annular filter screens, it is easy to fix the filter screen formed by welding the two filter screens at the outer edge of the filter cavity.

[0020] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A filter bolt, comprising a bolt body (1); characterized in that: A ring-shaped filter cavity (11) is provided on the outer peripheral wall of the bolt body (1), and a ring-shaped filter screen (2) is provided at the outer edge of the filter cavity (11). The filter screen (2) is coaxially arranged with the bolt body (1), and the two ends of the filter screen (2) are respectively fixed to one end of the filter cavity (11) and circumferentially sealed. An outlet channel (12) with one end open is provided axially inside the bolt body (1), and an inlet channel (13) is provided on the bolt body (1) between the filter cavity (11) and the outlet channel (12). The two ends of the inlet channel (13) are respectively connected to the filter cavity (11) and the outlet channel (12).

2. The filter bolt according to claim 1, characterized in that: The bolt body (1) located between the filter chamber (11) and the outlet channel (12) is provided with two first through holes (131) that are symmetrical from left to right and two second through holes (132) that are symmetrical from front to back. The two first through holes (131) and the two second through holes (132) are distributed at intervals along the axial direction of the bolt body (1). Both ends of each first through hole (131) are connected to the filter chamber (11) and the outlet channel (12) respectively. Both ends of each second through hole (132) are connected to the filter chamber (11) and the outlet channel (12) respectively. The two first through holes (131) and the two second through holes (132) form the inlet channel (13).

3. The filter bolt according to claim 1 or 2, characterized in that: The inner peripheral wall of the filter screen (2) is fitted with the inner side wall of the filter cavity (11) with a clearance.

4. The filter bolt according to claim 3, characterized in that: The filter screen (2) includes two semi-circular filter screen pieces arranged symmetrically. The ends of the two filter screen pieces are welded together to form a ring-shaped filter screen (2). The two ends of the filter screen (2) in the axial direction are respectively welded and fixed to one end of the filter cavity (11) and circumferentially sealed.

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