Differential pressure driven automatic slag discharge filter

Abstract

The utility model provides a kind of pressure difference drive automatic unloading slag filter, including main pipeline, branch pipeline, slag discharge pipe and piston rod slag discharging device, wherein, the upper end of the branch pipeline is connected with the middle part of the main pipeline, the lower end of the branch pipeline is connected with the upper end of the slag discharge pipe, filter screen is arranged in the branch pipeline, the filter screen can filter the impurities in the fluid flowing through the main pipeline, the lower end of the slag discharge pipe is connected with the piston rod slag discharging device, the impurities retained by the filter screen can be automatically discharged by the piston rod slag discharging device. The pressure difference drive automatic unloading slag filter uses fluid pressure difference as driving force, realizes the automation operation of filtering and slagging, without external energy intervention.

Description

Technical Field

[0001] This utility model relates to the field of fluid filtration equipment technology, and in particular to a differential pressure driven automatic slag discharge filter. Background Technology

[0002] Most existing Y-type filters require manual cleaning, necessitating manual shutdown and cover removal for cleaning. Each operation takes 10-20 minutes. Furthermore, during the cooling process of high-temperature equipment, delayed cleaning allows impurities to accumulate, leading to more severe filter clogging. Clogging obstructs the flow of coolant (or gas), preventing timely cooling and causing the temperature to rise continuously. This not only affects cooling efficiency but can also cause equipment malfunctions and even pose safety hazards. Therefore, timely filter cleaning and prevention of clogging are crucial to ensure normal equipment operation and extend its service life. Utility Model Content

[0003] The purpose of this invention is to provide a differential pressure driven automatic slag discharge filter, which automatically discharges slag through differential pressure, effectively solving the problems of clogging and heat dissipation caused by untimely slag removal.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A differential pressure driven automatic slag discharge filter includes a main pipe, a branch pipe, a slag discharge pipe, and a piston rod slag discharge device. The upper end of the branch pipe is connected to the middle of the main pipe, and the lower end of the branch pipe is connected to the upper end of the slag discharge pipe. A filter screen is installed inside the branch pipe to filter impurities in the fluid flowing through the main pipe. The lower end of the slag discharge pipe is connected to the piston rod slag discharge device, and the impurities trapped by the filter screen can be automatically discharged through the piston rod slag discharge device.

[0006] Furthermore, in the aforementioned differential pressure driven automatic slag discharge filter, the main pipeline includes an inlet section and an outlet section. The main pipeline located on one side of the branch pipeline is the inlet section, and the main pipeline located on the other side of the branch pipeline is the outlet section. Fluid flows into the filter from the inlet section and flows out from the outlet section. The angle between the axis of the branch pipeline and the axis of the inlet section is 110°-130°.

[0007] Furthermore, in the aforementioned differential pressure driven automatic slag discharge filter, the filter screen is inclined along the axial direction of the branch pipe, the upper end of the filter screen is located inside the main pipe, the upper end of the filter screen is connected to the inner wall of the main pipe, and the lower end of the filter screen is connected to the inner wall of the slag discharge pipe.

[0008] Furthermore, in the aforementioned differential pressure driven automatic slag discharge filter, the piston rod slag discharge device includes a housing, the interior of which is hollow, and a first through hole is provided on both the upper and lower side walls of the housing. The axes of the two first through holes are collinear, the lower end of the slag discharge pipe communicates with the first through hole on the upper side wall of the housing, the axis of the housing is perpendicular to the axis of the slag discharge pipe, a horizontal piston is provided inside the housing, the horizontal piston can move back and forth along the axial direction of the housing, and a slag discharge channel is provided radially on the horizontal piston, through which the two first through holes can communicate.

[0009] Furthermore, in the aforementioned differential pressure driven automatic slag discharge filter, the outer surface of the horizontal piston is provided with two annular first grooves, the two first grooves being located on both sides of the slag discharge channel, and a metal scraper ring is provided in the first groove.

[0010] Furthermore, in the aforementioned differential pressure driven automatic slag discharge filter, the outer surface of the horizontal piston is provided with two annular second grooves, one of which is located outside one of the first grooves, and the other is located outside the other of the first grooves. A fluororubber O-ring is provided in the second groove.

[0011] Furthermore, in the aforementioned differential pressure driven automatic slag discharge filter, the outer surface of the horizontal piston is provided with two annular third grooves, one of which is located outside one of the second grooves, and the other of which is located outside the other of the second grooves. A PTFE wear-resistant ring is provided in the third groove.

[0012] Furthermore, in the aforementioned differential pressure driven automatic slag discharge filter, the piston rod slag discharge device further includes a reset adjustment device. End caps are provided at both the left and right ends of the housing, and each end cap has a second through hole. Guide rods are provided at both the left and right ends of the horizontal piston, and the two guide rods pass through the two second through holes respectively. The guide rods can move along the second through holes. The outer wall of the end cap located at the right end of the housing is connected to one end of the reset adjustment device. An adjustment element is provided at the other end of the reset adjustment device. A reset spring is provided inside the reset adjustment device. The free end of the guide rod at the right end of the horizontal piston is located inside the reset adjustment device, and the free end of the guide rod at the right end of the horizontal piston abuts against one end of the reset spring. The other end of the reset spring is connected to the adjustment element. Rotating the adjustment element can adjust the compression of the reset spring.

[0013] Furthermore, in the aforementioned differential pressure driven automatic slag discharge filter, the gap inside the housing and located to the left of the horizontal piston is connected to the inlet section of the main pipeline via a hose, and the gap inside the housing and located to the right of the horizontal piston is connected to the outlet section of the main pipeline via a hose. When there is no differential pressure between the main pipeline on both sides of the branch pipeline, the left end of the horizontal piston contacts the end cap on the left side of the housing, and the slag discharge channel is offset from the two first through holes, so that the slag discharge pipe is in a sealed state. At this time, the horizontal piston is in the initial state.

[0014] Furthermore, in the aforementioned differential pressure driven automatic slag discharge filter, during the process of filtering the fluid flowing through the main pipeline, slag is deposited inside the filter screen, creating a pressure difference between the inlet section and the outlet section of the main pipeline. When the fluid pressure in the left orifice of the horizontal piston is greater than or equal to the fluid pressure in the right orifice of the horizontal piston by 0.1-0.5 MPa, the horizontal piston moves to the right, aligning and connecting the slag discharge channel on the horizontal piston with the two first through holes, thereby achieving online slag discharge.

[0015] Analysis reveals that this utility model discloses a differential pressure driven automatic slag discharge filter. This filter utilizes fluid pressure difference as the driving force to achieve automated filtration and slag discharge without the need for external energy intervention. The filter intercepts solid impurities in the fluid through a filter screen. When impurities accumulate to a certain level, the differential pressure automatically triggers the piston rod slag discharge device to automatically discharge the trapped impurities. This process cleans the filter screen in real time, preventing filter blockage caused by impurity accumulation during the cooling process of high-temperature equipment. It ensures smooth fluid (gas or liquid) flow and avoids equipment malfunctions or safety hazards due to poor heat dissipation. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. Wherein:

[0017] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0018] Figure 2 This is a schematic diagram of the piston rod slag discharge device according to an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the structure of a horizontal piston according to an embodiment of the present invention.

[0020] Explanation of reference numerals in the attached drawings: 1 Main pipe; 11 Inlet section; 12 Outlet section; 2 Branch pipe; 3 Slag discharge pipe; 4 Filter screen; 5 Piston rod slag discharge device; 51 Outer shell; 52 First through hole; 53 Horizontal piston; 54 Slag discharge channel; 55 First groove; 56 Second groove; 57 Third groove; 58 End cap; 59 Reset adjustment device; 60 Adjusting component; 61 Reset spring; 62 Guide rod; 7 Hose. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Various examples are provided by way of explanation of the present invention and not by way of limitation. In fact, those skilled in the art will recognize that modifications and variations can be made to the present invention without departing from the scope or spirit of the invention. For example, a feature shown or described as part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desirable that the present invention encompass such modifications and variations that fall within the scope of the appended claims and their equivalents.

[0022] In the description of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. The terms "connected," "linked," and "set up" used in this utility model should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a direct connection or an indirect connection through intermediate components; a wired connection, a radio connection, or a wireless communication signal connection. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0023] The accompanying drawings illustrate one or more examples of the present invention. The detailed description uses numerals and letters to refer to features in the drawings. Similar or analogous reference numerals in the drawings and description have been used to refer to similar or analogous parts of the present invention. As used herein, the terms “first,” “second,” and “third,” etc., are used interchangeably to distinguish one component from another and are not intended to indicate the location or importance of individual components.

[0024] like Figures 1 to 3 As shown, according to an embodiment of the present invention, a differential pressure driven automatic slag discharge filter is provided, such as... Figure 1As shown, the filter includes a main pipe 1, a branch pipe 2, a slag discharge pipe 3, and a piston rod slag discharge device 5. The upper end of the branch pipe 2 is connected to the middle of the main pipe 1, and the lower end of the branch pipe 2 is connected to the upper end of the slag discharge pipe 3. A filter screen 4 is installed inside the branch pipe 2. The filter screen 4 can filter impurities in the fluid flowing through the main pipe 1. The lower end of the slag discharge pipe 3 is connected to the piston rod slag discharge device 5. The impurities trapped by the filter screen 4 can be automatically discharged through the piston rod slag discharge device 5.

[0025] Furthermore, the main pipeline 1 includes an inlet section 11 and an outlet section 12. The main pipeline 1 located on one side of the branch pipeline 2 is the inlet section 11, and the main pipeline 1 located on the other side of the branch pipeline 2 is the outlet section 12. Fluid flows into the filter from the inlet section 11 and flows out from the outlet section 12. The angle between the axis of the branch pipeline 2 and the axis of the inlet section 11 is 110°-130°. The inlet section 11 of the main pipeline 1 is responsible for guiding the fluid to be filtered into the filter, while the outlet section 12 of the main pipeline 1 discharges the filtered clean fluid. The filter screen 4 is inclined along the axis of the branch pipeline 2. The upper end of the filter screen 4 is located inside the main pipeline 1 and is connected to the inner wall of the main pipeline 1. The lower end of the filter screen 4 is connected to the inner wall of the slag discharge pipe 3. The filter screen 4 is arranged at an angle along the axis of the branch pipe 2. The upper end is embedded in the inner wall of the main pipe 1, and the lower end extends into the slag discharge pipe 3, forming an efficient impurity interception channel. The design of the inclined filter screen 4 (the filter screen 4 and the axis of the inlet section 11 form an angle of 110°-130°) combined with the effect of gravity, allows the sludge to naturally settle into the slag discharge pipe 3, and the filtration efficiency is significantly improved.

[0026] Furthermore, such as Figure 2 As shown, the piston rod slag discharge device 5 includes a housing 51, which is hollow inside. First through holes 52 are provided on both the upper and lower side walls of the housing 51, and the axes of the two first through holes 52 are collinear. The lower end of the slag discharge pipe 3 communicates with the first through hole 52 on the upper side wall of the housing 51. The axis of the housing 51 is perpendicular to the axis of the slag discharge pipe 3. A horizontal piston 53 is provided inside the housing 51, and the horizontal piston 53 can move back and forth along the axis of the housing 51. A slag discharge channel 54 is radially provided on the horizontal piston 53, and the two first through holes 52 can communicate through the slag discharge channel 54. The slag discharge pipe 3 serves as the outlet for impurity discharge, and its end is directly connected to the piston rod slag discharge device 5. The horizontal piston 53 can move horizontally within the housing 51, and its radially provided slag discharge channel 54 can align with the first through hole 52 when the piston moves, thus achieving impurity discharge.

[0027] Furthermore, such as Figure 3As shown, the outer surface of the horizontal piston 53 is provided with two annular first grooves 55, which are located on both sides of the slag discharge channel 54. A metal scraper ring is installed within each first groove 55. When the horizontal piston 53 moves, the metal scraper ring can effectively scrape off solid particles adhering to the surface of the horizontal piston 53, preventing impurities from accumulating and causing the horizontal piston 53 to jam. It also prevents hard particles from entering the fluororubber O-ring sealing area, reducing the risk of wear on the fluororubber O-ring and ensuring the normal operation of the filter.

[0028] Furthermore, the outer surface of the horizontal piston 53 is provided with two annular second grooves 56. One second groove 56 is located outside one first groove 55, and the other second groove 56 is located outside another first groove 55. A fluororubber O-ring is disposed in the second groove 56. The fluororubber O-ring serves as the main sealing layer, providing a static seal when the horizontal piston 53 is stationary to prevent fluid leakage from the slag discharge channel 54, and maintaining elastic contact when the horizontal piston 53 is moving to reduce fluid side leakage.

[0029] Furthermore, the outer surface of the horizontal piston 53 is provided with two annular third grooves 57. One third groove 57 is located outside one second groove 56, and the other third groove 57 is located outside the other second groove 56. A PTFE wear-resistant ring is provided inside the third groove 57. The PTFE wear-resistant ring can reduce the movement resistance of the horizontal piston 53 and reduce the risk of wear of the fluororubber O-ring.

[0030] Furthermore, the piston rod slag discharge device 5 also includes a reset adjustment device 59. End caps 58 are provided at both the left and right ends of the outer casing 51, and each end cap 58 has a second through hole. Guide rods 62 are provided at both the left and right ends of the horizontal piston 53, and the two guide rods 62 pass through the two second through holes respectively. The guide rods 62 can move along the second through holes. The outer wall of the end cap 58 located at the right end of the outer casing 51 is connected to one end of the reset adjustment device 59. An adjusting element 60 is provided at the other end of the reset adjustment device 59. The adjustment device 59 is equipped with a reset spring 61. The free end of the guide rod 62 at the right end of the horizontal piston 53 is located inside the reset adjustment device 59. The free end of the guide rod 62 at the right end of the horizontal piston 53 abuts against one end of the reset spring 61. The other end of the reset spring 61 is connected to the adjustment component 60. Rotating the adjustment component 60 can adjust the compression of the reset spring 61, thereby adjusting the preset threshold of the piston rod slag discharge device 5, so that the filter can adapt to different fluid viscosity conditions and the slag discharge cycle is precisely controllable.

[0031] Furthermore, the gap inside the outer casing 51 and located to the left of the horizontal piston 53 is connected to the inlet section 11 of the main pipe 1 through the hose 7, and the gap inside the outer casing 51 and located to the right of the horizontal piston 53 is connected to the outlet section 12 of the main pipe 1 through the hose 7. When there is no pressure difference between the main pipes 1 on both sides of the branch pipe 2, the left end of the horizontal piston 53 contacts the end cap 58 on the left side of the outer casing 51, and the slag discharge channel 54 is offset from the two first through holes 52, so that the slag discharge pipe 3 is in a sealed state. At this time, the horizontal piston 53 is in the initial state.

[0032] Furthermore, during the filtration of fluid flowing through the main pipe 1, sludge is deposited inside the filter screen 4, creating a pressure difference between the inlet section 11 and the outlet section 12 of the main pipe 1. When the fluid pressure in the orifice on the left side of the horizontal piston 53 is greater than or equal to a preset threshold of 0.1-0.5 MPa (the preset threshold can be adjusted by the adjusting component 60), the horizontal piston 53 moves to the right, aligning and connecting the sludge discharge channel 54 on the horizontal piston 53 with the two first through holes 52, thus achieving the sludge discharge action. This filter adopts a pressure difference drive mechanism to achieve fully automatic operation. When the pressure difference across the filter screen 4 reaches 0.1-0.5 MPa, the sludge discharge action is automatically triggered by the piston rod sludge discharge device 5, achieving online automatic sludge discharge.

[0033] The working principle of this differential pressure driven automatic slag discharge filter is simple and efficient: fluid enters from the inlet section 11 of the main pipeline 1, is filtered by the filter screen 4, and the clean fluid flows out from the outlet section 12, while impurities are trapped on the filter screen 4. As impurities accumulate, the pressure difference across the filter screen 4 gradually increases. When the pressure difference reaches a preset threshold, the piston rod slag discharge device 5 is activated to discharge the impurities from the filter. Subsequently, under the action of the return spring 61, the horizontal piston 53 returns to its initial state.

[0034] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0035] A differential pressure driven automatic slag discharge filter utilizes fluid pressure difference as the driving force to automate filtration and slag discharge operations without external energy intervention. The filter intercepts solid impurities in the fluid through a filter screen 4. When impurities accumulate to a certain level, the differential pressure automatically triggers the piston rod slag discharge device 5 to discharge the trapped impurities. This process continuously removes impurities trapped in the filter screen 4, preventing filter blockage caused by impurity accumulation during the cooling process of high-temperature equipment. It ensures smooth fluid (gas or liquid) flow and avoids equipment malfunctions or safety hazards due to poor heat dissipation.

[0036] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A differential pressure driven automatic slag discharge filter, characterized in that, It includes main pipelines, branch pipelines, slag discharge pipes, and piston rod slag discharge devices, among which, The upper end of the branch pipe is connected to the middle of the main pipe, and the lower end of the branch pipe is connected to the upper end of the slag discharge pipe. The branch pipe is equipped with a filter screen, which can filter impurities in the fluid flowing through the main pipe. The lower end of the slag discharge pipe is connected to the piston rod slag discharge device, and the impurities trapped by the filter screen can be automatically discharged through the piston rod slag discharge device.

2. The differential pressure driven automatic slag discharge filter according to claim 1, characterized in that, The main pipeline includes an inlet section and an outlet section. The main pipeline located on one side of the branch pipeline is the inlet section, and the main pipeline located on the other side of the branch pipeline is the outlet section. Fluid flows into the filter from the inlet section and flows out from the outlet section. The angle between the axis of the branch pipe and the axis of the inlet section is 110°-130°.

3. The differential pressure driven automatic slag discharge filter according to claim 1, characterized in that, The filter screen is inclined along the axis of the branch pipe, with the upper end of the filter screen located inside the main pipe and connected to the inner wall of the main pipe, and the lower end of the filter screen connected to the inner wall of the slag discharge pipe.

4. The differential pressure driven automatic slag discharge filter according to claim 2, characterized in that, The piston rod slag discharge device includes a housing, which is hollow inside. A first through hole is provided on both the upper and lower side walls of the housing. The axes of the two first through holes are collinear. The lower end of the slag discharge pipe communicates with the first through hole on the upper side wall of the housing. The axis of the housing is perpendicular to the axis of the slag discharge pipe. A horizontal piston is installed inside the outer casing, and the horizontal piston is capable of moving back and forth along the axial direction of the outer casing. The horizontal piston is provided with a slag discharge channel along the radial direction, and the two first through holes can be connected through the slag discharge channel.

5. The differential pressure driven automatic slag discharge filter according to claim 4, characterized in that, The outer surface of the horizontal piston is provided with two annular first grooves, which are located on both sides of the slag discharge channel. A metal scraper ring is provided in the first groove.

6. The differential pressure driven automatic slag discharge filter according to claim 5, characterized in that, The outer surface of the horizontal piston is provided with two annular second grooves, one of which is located outside one of the first grooves, and the other is located outside the other of the first grooves. A fluororubber O-ring is provided in the second groove.

7. The differential pressure driven automatic slag discharge filter according to claim 6, characterized in that, The outer surface of the horizontal piston is provided with two annular third grooves, one of which is located outside the other of the second grooves, and the other of which is located outside the other of the second grooves. A PTFE wear-resistant ring is provided in the third groove.

8. The differential pressure driven automatic slag discharge filter according to claim 4, characterized in that, The piston rod slag discharge device also includes a reset and adjustment device. The outer casing is provided with end caps at both the left and right ends, and each of the two end caps is provided with a second through hole. The horizontal piston is provided with guide rods at both its left and right ends, and the two guide rods respectively pass through the two second through holes. The guide rod can move along the second through hole. The outer wall of the end cap located at the right end of the housing is connected to one end of the reset adjustment device. The other end of the reset adjustment device is provided with an adjusting element, and a reset spring is provided inside the reset adjustment device. The free end of the guide rod at the right end of the horizontal piston is located inside the reset adjustment device. The free end of the guide rod at the right end of the horizontal piston abuts against one end of the reset spring. The other end of the reset spring is connected to the adjusting member. Rotating the adjusting member can adjust the compression of the reset spring.

9. The differential pressure driven automatic slag discharge filter according to claim 8, characterized in that, The gap inside the housing and located to the left of the horizontal piston is connected to the inlet section of the main pipe via a flexible hose. The gap inside the housing and located to the right of the horizontal piston is connected to the outlet section of the main pipe via a hose. When there is no pressure difference between the main pipes on both sides of the branch pipe, the left end of the horizontal piston contacts the end cap on the left side of the outer casing, and the slag discharge channel is offset from the two first through holes, so that the slag discharge pipe is in a sealed state. At this time, the horizontal piston is in the initial state.

10. The differential pressure driven automatic slag discharge filter according to claim 4, characterized in that, During the process of filtering the fluid flowing through the main pipeline, sludge is deposited inside the filter screen, creating a pressure difference between the inlet and outlet sections of the main pipeline. When the fluid pressure in the left orifice of the horizontal piston is greater than or equal to the fluid pressure in the right orifice of the horizontal piston by 0.1-0.5 MPa, the horizontal piston moves to the right, aligning and connecting the sludge discharge channel on the horizontal piston with the two first through holes, thereby achieving online sludge discharge.

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