Cleaning mechanism and fluid conveying system

Abstract

The invention relates to the technical field of fluid pipeline medium conveying, in particular to a cleaning mechanism and a fluid conveying system. A second channel; the filtering piece is arranged on the first channel; the rotating piece is arranged on the second channel, and the rotating piece rotates to clean the filtering piece; fluid is conveyed through the first channel, and when pressure difference exists at the two ends of the filtering piece, the fluid is conveyed through the second channel to drive the rotating piece to rotate so as to clean the filtering piece. The device is provided with a manual cleaning mode and a pure mechanical cleaning mode, a sampling signal door and a pressure relief door of the diaphragm valve can be manually operated to achieve manual automatic cleaning, a power source and a control system do not need to be configured for pure mechanical cleaning, and automatic cleaning of the filter screen can be achieved through power of fluid.

Description

Technical Field

[0001] The present invention relates to the technical field of fluid pipeline medium transportation, and particularly to a cleaning mechanism and a fluid transportation system. Background Art

[0002] When the medium flows in the pipeline, impurities are inevitably present. For most fluid pipelines, a filter screen is generally designed. When the differential pressure rises due to the blockage of the filter screen, it can only be cleaned by online isolation and manual cleaning or an electric cleaning device. Manual cleaning is time-consuming and laborious, and electric cleaning requires the configuration of relevant power supplies and control systems, increasing the installation and maintenance costs. Summary of the Invention

[0003] In view of the problem of requiring shutdown maintenance in the above-mentioned prior art, the present invention is proposed.

[0004] Therefore, the object of the present invention is to provide a cleaning mechanism.

[0005] To solve the above technical problems, the present invention provides the following technical solution: A cleaning mechanism includes a first channel; a second channel; a filtering member disposed on the first channel; a rotating member disposed on the second channel, and the rotation of the rotating member can clean the filtering member; the fluid is transported through the first channel, and when there is a pressure difference at both ends of the filtering member, the fluid is transported through the second channel to drive the rotating member to rotate and clean the filtering member.

[0006] As a preferred solution of the cleaning mechanism of the present invention, a third channel is provided on the first channel, and the third channel is connected to the filtering member.

[0007] As a preferred solution of the cleaning mechanism of the present invention, the filtering member includes a filter screen, the filter screen is in an arc shape and is longitudinally disposed in the first channel.

[0008] As a preferred solution of the cleaning mechanism of the present invention, it further includes a control member, and the control member includes a first control valve disposed on the second channel and a second control valve disposed on the third channel.

[0009] As a preferred solution of the cleaning mechanism of the present invention, the second channel is in a "C" shape, the starting end of the second channel is communicated with a position near one end of the first channel, and the terminating end of the second channel is communicated with the filtering member.

[0010] As a preferred solution of the cleaning mechanism of the present invention, the cross-sectional area of the A end of the second channel is larger than that of the B end.

[0011] As a preferred embodiment of the cleaning mechanism of the present invention, the rotating member includes a water wheel pump, the water wheel pump is disposed on the second channel, a transmission shaft disposed at the output end of the water wheel pump, and the other end of the transmission shaft penetrates through the first channel and is rotatably connected to a scraper on the inner side of the filter screen.

[0012] The present invention also provides a fluid delivery system, including the above-described cleaning mechanism; wherein: the first channel is provided with a transmission member; when a pressure difference appears at both ends of the filter member, the transmission member transmits a signal to the control member, thereby triggering the control member to perform a switching action.

[0013] As a preferred embodiment of a fluid delivery system of the present invention, the transmission member includes a first pipeline, a second pipeline, and a third pipeline. The first pipeline and the second pipeline are respectively disposed on the front and rear sides of the filter screen in the first channel and are connected to the second control valve.

[0014] The beneficial effects of the present invention: The device is provided with two modes of manual cleaning and pure mechanical cleaning. The manual diaphragm valve sampling signal door and the pressure relief door can be manually operated to achieve manual automatic cleaning. The pure mechanical cleaning does not require a power supply and a control system, and the automatic cleaning of the filter screen can be achieved by using the power of the fluid itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Among them:

[0016] Figure 1 It is a schematic structural diagram of the cleaning mechanism in Embodiment 1 of the present invention.

[0017] Figure 2 It is a schematic structural diagram of the cleaning mechanism in Embodiment 1 of the present invention.

[0018] Figure 3 It is a schematic structural diagram of the cleaning mechanism in Embodiment 2 of the present invention.

[0019] Figure 4 It is a schematic structural diagram of the cleaning mechanism in Embodiment 2 of the present invention.

[0020] Figure 5 It is a schematic diagram of the fluid delivery system in Embodiment 3 of the present invention.

[0021] Figure 6 It is a schematic diagram of the fluid delivery system in Embodiment 3 of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0022] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific embodiments of the present invention will be given in conjunction with the accompanying drawings of the specification.

[0023] In the following description, many specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention may be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0024] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure or characteristic that may be included in at least one implementation manner of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is separate or selectively exclusive of other embodiments.

[0025] Furthermore, the present invention will be described in detail in conjunction with the schematic diagrams. When describing the embodiments of the present invention in detail, for the convenience of explanation, the cross-sectional views showing the device structure will be enlarged locally out of the general proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present invention herein. In addition, in actual production, three-dimensional spatial dimensions including length, width and depth should be included.

[0026] Embodiment 1

[0027] Referring to Figure 1 , a cleaning mechanism for a filter screen 301 is provided, including a first channel 100; a second channel 200; a filter element 300 provided on the first channel 100; a rotating member 400 provided on the second channel 200, and the rotation of the rotating member 400 can clean the filter element 300; the fluid is conveyed through the first channel 100, and when there is a pressure difference at both ends of the filter element 300, the fluid is conveyed through the second channel 200 to drive the rotating member 400 to rotate and clean the filter element 300.

[0028] Specifically, in this embodiment, it mainly means that the fluid in the first channel 100 contains impurities and dirt. When the fluid flows through the inside of the first channel 100, some of the impurities, dirt or solids contained in the fluid will be intercepted by the filter screen 301, and the impurities intercepted by the filter screen 301 accumulate, causing the problem of blockage of the first channel 100. Referring to Figure 2 , the filter screen 301 is in an arc shape and is longitudinally arranged in the first pipe.

[0029] A third channel 500 is provided on the first channel 100. The third channel 500 is a sewage pipeline. The first channel 100, the second channel 200, and the third channel 500 are all composed of pipelines. The first channel 100 is respectively connected and communicated with the second channel 200 and the third channel 500. The first channel 100 can be regarded as the main pipeline, undertaking the main task of transporting fluids; while the second channel 200 branches out from the main pipeline and guides part of the fluids to the rotating member 400.

[0030] Further, the rotating member 400 is mainly composed of a water wheel pump 401, a transmission shaft 402, and a scraper 403. The water wheel pump 401 is installed on the second channel 200 so that it can fully utilize the power of the fluids in the second channel 200. When the fluids in the second channel 200 are in a flowing state, the generated energy will drive the water wheel pump 401 to start operating efficiently. The scraper 403 is arranged inside the first channel 100 along the longitudinal direction, and its outer side fits the surface of the filter screen 301, which can ensure that during the movement of the scraper 403, the surface of the filter screen 301 is comprehensively and effectively cleaned. The water wheel pump 401 and the scraper 403 are firmly connected through the transmission shaft 402. Once the water wheel pump 401 is started under the drive of the fluids, the generated power will be smoothly and efficiently transmitted to the scraper 403 through the transmission shaft 402, thereby driving the scraper 403 to rotate and realizing the continuous cleaning of the surface of the filter screen 301.

[0031] When the filter screen 301 is blocked and needs to be cleaned, the fluids in the first channel 100 are diverted into the second channel 200. The energy of the fluids in the second channel 200 pushes the impeller of the water wheel pump 401 to rotate. The water wheel pump 401 converts the energy of the fluids into mechanical energy, causing itself to start rotating. The rotational movement of the water wheel pump 401 is transmitted through the transmission shaft 402. The transmission shaft 402 plays a role in connecting and transmitting power, conducting the rotational power of the water wheel pump 401 to the transmission shaft 402, driving the transmission shaft 402 to start rotating. The rotating transmission shaft 402 can physically scrape the filter screen 301, scraping off the impurities attached to the filter screen 301, thereby realizing the cleaning of the pipeline filter screen 301, ensuring the normal filtering function of the filter screen 301 and the smooth operation of the pipeline system. The fluids flowing out of the water wheel pump 401 will be discharged from the second channel 200, while the fluids with impurities will be discharged through the third channel 500.

[0032] Embodiment 2

[0033] Refer to Figure 3 , what is different from the first embodiment in this embodiment is that when the fluids impact the impeller of the water wheel pump 401, the change in momentum is greater in a short time. According to the momentum theorem, the generated impact force is also greater, and the cleaning of the filter screen 301 is realized through the water flow converted by the water wheel pump 401.

[0034] Among them, the second channel 200 is designed as a closed-loop structure, and both its head and tail ends are connected to the first channel 100 in a closed-loop shape. When water flows, the water diverted into the second channel 200 will flow back into the first channel 100 again.

[0035] And referring to Figure 4 , the diameter of the A end of the channel is significantly larger than that of the B end, and the B end happens to be in close contact with the first channel 100. When water enters the second channel 200 and flows towards the A end, due to the gradually decreasing diameter of the channel, the flow space available for the water continuously narrows. According to the principles of fluid mechanics, in this case, the flow rate of the water will increase significantly, thereby generating a stronger impact force.

[0036] Furthermore, the arc-shaped transverse cross-section of the filter screen 301 is exactly equal to the size of the cross-section B end of the second channel 200, and precise alignment is achieved, enabling the water flow accelerated through the AB ends to directly act on the filter screen 301 with a strong impact force. It can efficiently impact the filter screen 301 in all directions, thoroughly cleaning the stubbornly attached impurities in the mesh holes. The impurities washed down will not cause secondary pollution in the channel, but will enter the third channel 500 along with the flushing water flow. In this way, not only the cleaning effect of the filter screen 301 is ensured, but also the smooth operation of the entire pipeline system is maintained.

[0037] Embodiment 3

[0038] Referring to Figure 4 , the difference between this embodiment and the first embodiment is that: by using the pressure difference before and after the filter screen 301 in the first channel 100, the effect of automatically cleaning the filter screen 301 in a pure mechanical manner is achieved without manual intervention;

[0039] The impurities in the fluid will be intercepted by the filter screen 301, resulting in the gradual accumulation of impurities on the surface of the filter screen 301. As time goes by, more and more impurities accumulate on the surface of the filter screen 301, and the flow-through area of the filter screen 301 gradually decreases. Due to the decrease in the flow-through area, the resistance of the fluid passing through the filter screen 301 increases, leading to a gradual increase in the pressure difference before and after the filter screen 301, that is, the pressure difference before and after the filter screen 301 in the first channel 100 gradually increases.

[0040] Both the first control valve 601 and the second control valve 602 are valves that use a diaphragm 6011 to control the on-off of the fluid. The lower part of the diaphragm 6011 of the second control valve 602 is connected to the second pipeline 702 in the first channel 100, that is, in front of the filter screen 301, for obtaining the pressure signal in front of the filter screen 301. The upper part of the diaphragm 6011 is connected to the first pipeline 701 behind the filter screen 301 in the first channel 100, for obtaining the pressure signal behind the filter screen 301. The lower part of the diaphragm 6011 of the first control valve 601 of the water wheel pump 401 is connected to the third pipeline 703 of the second pipeline 702, for obtaining the fluid pressure in the main pipeline.

[0041] As Figure 6 , the differential pressure set values of the first control valve 601 and the second control valve 602 can both be adjusted. Rotate the pressure regulating nut 6012 clockwise until it can no longer be tightened, so that the pressure regulating spring 6013 is in the maximum pre-tightening force state. The second control valve 602 remains closed in the initial state. Rotate the handwheel of the low-pressure side signal gate counterclockwise until it is completely closed, cutting off the transmission of the pressure signal after the filter screen 301, so that the upper pressure of the second control valve 602 remains at a relatively low level. Open the pressure relief valve 7012 so that the pressure signal of the first channel 100 can be transmitted to the lower part of the second control valve 602. Manually increase the measured value of the differential pressure of the filter screen 301, observe the reading of the differential pressure gauge, and wait for the differential pressure value to gradually rise. When the differential pressure value reaches the set value, prepare for the sewage discharge operation. Slowly loosen the pressure regulating nut 6012 and gradually reduce the pre-tightening force of the pressure regulating spring 6013, so that the second control valve 602 gradually opens. Confirm whether the second control valve 602 opens normally, and perform the sewage discharge operation. Through the opening of the second control valve 602, start the water turbine pump 401 to clean and discharge the sewage of the filter screen 301. When the differential pressure of the filter screen 301 returns below the set value, close the second control valve 602, stop the sewage discharge operation, close the pressure relief valve 7012, and restore the normal measurement of the differential pressure of the filter screen 301. Open the low-pressure side signal gate to restore the transmission of the pressure signal of the second pipeline.

[0042] When the filter screen 301 is blocked, the fluid pressure in front of the filter screen 301 will gradually increase, while the pressure behind the filter screen 301 is relatively low, thus forming a pressure difference across the filter screen 301. This pressure difference can be sensed through the signal pipelines connected to the lower and upper parts of the diaphragm 6011 of the second control valve 602. When the pressure difference across the filter screen 301 exceeds the set value, the pressure on the upper part of the diaphragm 6011 is lower than that on the lower part, causing the diaphragm 6011 to move upward, thus opening the second control valve 602. The upper pressure of the first control valve 601 is associated with the opening state of the second control valve 602. When the second control valve 602 opens, the upper pressure of the first control valve 601 will drop, and the first control valve 601 will open, allowing the fluid in the first channel 100 to enter the water turbine pump 401, driving the water turbine pump 401 to rotate and achieving the effect of automatically cleaning the filter screen 301 in a purely mechanical manner.

[0043] Example 4

[0044] What is different about this embodiment from the first embodiment is that when the automatic cleaning system fails or malfunctions, the pressure relief valve 7012 can be used as an emergency measure to ensure that the filter screen 301 can be cleaned in a timely manner, avoiding medium interruption or other problems caused by the blockage of the filter screen 301.

[0045] Thus, compared with the solution of the embodiment, this solution is applicable to the situation where the automatic cleaning function cannot completely remove the impurities on the filter screen 301, or the degree of blockage of the filter screen 301 exceeds the processing capacity of the automatic cleaning. At this time, a more thorough cleaning can be performed through the pressure relief valve 7012.

[0046] The function of the low-pressure valve 7011 is to transmit the pressure signal after the filter screen 301 in the first channel 100 to the second control valve 602. When this signal valve is closed, the pressure signal after the filter screen 301 can be cut off, so that the upper pressure of the second control valve 602 is no longer affected by the pressure after the filter screen 301. The function of the pressure relief valve 7012 is to manually create a pressure difference, so that the pressure signal of the first channel 100 can directly act on the lower part of the diaphragm 6011 of the second control valve 602. When the pressure relief valve 7012 is opened, the pressure signal of the first channel 100 will directly act on the lower part of the diaphragm 6011, while the upper pressure decreases due to the closing of the low-pressure valve 7011, thus creating a pressure difference between the upper and lower parts of the diaphragm 6011, causing the second control valve 602 to open, thereby achieving the effect of the transmission shaft 402 physically rubbing against the filter screen 301 and completing the cleaning work.

[0047] All other structures are the same as those in Embodiment 3.

[0048] Importantly, it should be noted that the construction and arrangement of the present application shown in multiple different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who refer to this disclosure should easily understand that many modifications are possible on the premise of substantially not deviating from the novel teachings and advantages of the subject matter described in this application (for example, the dimensions, scales, structures, shapes and proportions of various elements, and parameter values such as temperature, pressure, etc., installation arrangements, use of materials, color, orientation changes, etc.). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature, number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means-plus-function" clause is intended to cover the structure that performs the recited function herein, and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the present invention is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0049] In addition, in order to provide a concise description of the exemplary embodiments, all features of the actual embodiments may not be described (i.e., those features that are not relevant to the currently contemplated best mode of carrying out the invention or those features that are not relevant to implementing the invention).

[0050] It should be understood that, in the development of any actual implementation, in any engineering or design project, numerous specific implementation decisions may be made. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, without undue experimentation, such development efforts will be a routine task of design, fabrication, and production.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A cleaning mechanism, characterized in that: Comprising, a first channel (100); a second channel (200); a filter element (300) disposed on the first channel (100); a rotating member (400) disposed on the second channel (200), the rotation of the rotating member (400) being capable of cleaning the filter element (300); The fluid is conveyed through the first channel (100), and when there is a pressure difference at both ends of the filter element (300), the fluid is conveyed through the second channel (200) to drive the rotating member (400) to rotate and clean the filter element (300).

2. The cleaning mechanism according to claim 1, characterized in that: A third channel (500) is provided on the first channel (100), and the third channel (500) is connected to the filter element (300).

3. The cleaning mechanism according to claim 2, characterized in that: The filter element (300) includes a filter screen (301), the filter screen (301) is in an arc shape and is longitudinally disposed in the first channel (100).

4. The cleaning mechanism according to claim 2 or 3, characterized in that: It further includes a control member (600), the control member (600) includes a first control valve (601) disposed on the second channel (200), and a second control valve (602) disposed on the third channel (500).

5. The cleaning mechanism according to claim 4, characterized in that: The second channel (200) is in a "C" shape, the starting end of the second channel (200) is communicated with a position near one end of the first channel (100), and the terminating end of the second channel (200) is communicated with the filter element (300).

6. The cleaning mechanism according to claim 5, characterized in that: The cross-sectional area of the A end of the second channel (200) is larger than that of the B end.

7. The cleaning mechanism according to claim 1, 2, 3, 5 or 6, characterized in that: The rotating member (400) includes a water wheel pump (401), the water wheel pump (401) is disposed on the second channel (200), a transmission shaft (402) disposed on the output end of the water wheel pump (401), and the other end of the transmission shaft (402) penetrates through the first channel (100) and is rotatably connected with a scraper (403) inside the filter screen (301).

8. A fluid delivery system, characterized in that: Comprising the cleaning mechanism according to any one of claims 1 to 7; and, A transmission member (700) is provided on the first channel (100); When a pressure difference appears at both ends of the filter element (300), the transmission member (700) transmits a signal to the control member (600), thereby triggering the control member (600) to perform a switching action.

9. The fluid delivery system according to claim 8, characterized in that: The transmission member (700) includes a first pipeline (701), a second pipeline (702) and a third pipeline (703), the first pipeline (701) and the second pipeline (702) are respectively disposed on the front and back sides of the filter screen (301) in the first channel (100) and are connected to the second control valve (602).

10. The fluid delivery system according to claim 9, characterized in that: A low-pressure valve (7011) and a pressure relief valve (7012) disposed on the first pipeline (701).

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