Water pump front filtering device

Abstract

The invention relates to the technical field of thermal power generation pre-filtering, in particular to a water pump pre-filtering device which comprises a filtering assembly, a filter, connecting pipes installed on the two sides of the filter, valves installed at the ends of the two connecting pipes and controlled through a first gear, and a second gear installed on the filter. A main pipe is mounted at the end part of the connecting pipe; the driving assembly comprises a connecting support installed on the side wall of the main pipe, the upper side and the lower side of the connecting support are connected with a first driving frame and a second driving frame correspondingly, and the first driving frame and the second driving frame are connected with a connecting shaft through a gear block and a gear correspondingly. The filter can be cleaned and maintained under the condition that the water pump is not stopped, normal operation of the thermal power generation device is ensured, and production interruption caused by shutdown is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of pre-filtering for thermal power generation, and in particular to a pre-filtering device for a water pump. Background Art

[0002] The pre-filter of the water pump in the thermal power plant is mainly used to remove impurities in the water, protect the water pump and related equipment, and ensure the normal operation of the thermal power plant. Specifically, the main functions of the pre-filter of the water pump include: effectively removing impurities and particles such as mud, leaves, and water plants in the water, and preventing these impurities from entering the water pump and pipes, causing blockage and damage. Prevent impurities from causing friction and wear on the blades and bearings of the water pump, thereby extending the service life of the water pump. Protect sensitive equipment such as boilers and heat exchangers from the influence of impurities and particles in the water, prevent equipment damage, and ensure the normal operation of the thermal power plant. Ensure that the water quality meets certain standard requirements, ensure the normal operation of subsequent treatment equipment, and improve the overall water treatment efficiency.

[0003] Although the existing water pump pre-filter has solved the above problems to a certain extent, there are still some shortcomings in the actual operation process: if the pre-filter is not cleaned for a long time, the accumulated impurities may breed bacteria, viruses and other microorganisms, causing secondary pollution to the water quality. Therefore, in order to ensure the filtering effect of the pre-filter and extend its service life, it needs to be cleaned regularly. The existing water pump pre-filter must stop the water pump when cleaning and maintaining it, which will affect the normal operation of the thermal power generation device and cause production interruption. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the fact that the water pump must be stopped during the cleaning and maintenance of the above-mentioned pre-filter, which will affect the normal operation of the thermal power generation device and cause production interruption, the present invention is proposed.

[0006] Therefore, the object of the present invention is to provide a water pump pre-filter device.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a water pump pre-filter device, comprising: a filter assembly, comprising a filter, connecting pipes arranged on both sides of the filter, valves installed at the ends of the two connecting pipes, the valves are controlled by a first gear, and main pipes are installed at the ends of the connecting pipes; and

[0008] A driving assembly includes a connecting bracket installed on the side wall of the main pipe, wherein the upper and lower sides of the connecting bracket are respectively connected to a No. 1 driving frame and a No. 2 driving frame, wherein the No. 1 driving frame and the No. 2 driving frame are respectively connected to a connecting shaft through a tooth block and a gear, wherein the No. 1 driving frame and the No. 2 driving frame are respectively connected to the valves on both sides of the filter through a rack and a first gear, wherein the rack on the No. 1 driving frame and the rack on the No. 2 driving frame are staggered with each other, and when the connecting shaft rotates, the No. 1 driving frame and the No. 2 driving frame respectively drive the valves on both sides of the two filters to open and close in sequence.

[0009] As a preferred solution of the water pump pre-filter device described in the present invention, the connecting bracket includes a bearing seat arranged on the side wall of the connecting shaft, a fixing ring is installed on the side wall of the bearing seat, the fixing ring is sleeved on the side wall of the main pipe, and a worm seat is installed on the top of the fixing ring.

[0010] As a preferred solution of the water pump pre-filter device of the present invention, the No. 1 drive frame includes a No. 1 drive frame arc arranged on the side wall of the filter, and a No. 1 drive rack is installed at both ends of the No. 1 drive frame arc, and a No. 1 drive slide is installed at the end of one of the No. 1 drive racks.

[0011] As a preferred solution of the water pump pre-filter device described in the present invention, wherein: the No. 2 drive frame includes a No. 2 drive frame arc arranged at the bottom end of the No. 1 drive frame arc, and No. 2 drive racks are installed at both ends of the No. 2 drive frame arc, and a second tooth block is arranged on one side of the No. 2 drive rack, and the second tooth block is opposite to the direction of the No. 2 drive rack.

[0012] As a preferred solution of the water pump pre-filter device of the present invention, the second drive frame also includes a connecting rod arranged on one side of the second gear block, and the top end of the connecting rod is connected to the groove of the side wall of the bearing seat.

[0013] As a preferred solution of the water pump pre-filter device of the present invention, the side wall of the connecting shaft is sleeved with a worm wheel, the tooth block on the side wall of the worm wheel is meshed with the tooth block on the worm, and the two ends of the worm are installed in the worm seat.

[0014] As a preferred solution of the water pump pre-filter device of the present invention, driven gears are installed at both ends of the connecting shaft, and the two driven gears are respectively meshed with the gear blocks on the first driving slide and the second gear block.

[0015] As a preferred solution of the water pump pre-filter device of the present invention, the connecting shaft is fixed by a mounting bracket on the bearing seat, and the connecting shaft passes through a fixing ring.

[0016] As a preferred solution of the water pump pre-filter device of the present invention, the two No. 1 drive racks of the No. 1 drive rack and the two No. 2 drive racks of the No. 2 drive rack are staggered with each other, and when the two valves connected to the No. 2 drive rack are opened, the two valves connected to the No. 1 drive rack are closed, and when the two valves connected to the No. 2 drive rack are closed, the two valves connected to the No. 1 drive rack are opened.

[0017] As a preferred solution of the water pump pre-filter device of the present invention, the tooth blocks on the first drive rack and the second drive rack are both meshed with the first gear on the valve.

[0018] Beneficial effects of the present invention: The present invention, by designing two filters and corresponding drive components, enables the cleaning and maintenance of the filters without stopping the water pump, thereby ensuring the normal operation of the thermal power generation device and avoiding production interruptions caused by shutdowns. The racks of the No. 1 drive frame and the No. 2 drive frame are staggered with each other, so that each time the working state of the filter is switched, the two filters will be opened at the same time, and then one set of valves will be closed. This design ensures the continuity and stability of the water flow during the switching process. Since cleaning and maintenance can be carried out without stopping the machine, the maintenance cost and time cost are greatly reduced, and the overall operating efficiency of the system is improved. The precise matching of the worm gear transmission and the rack and pinion ensures the reliability and stability of the drive assembly and reduces the probability of mechanical failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without any creative labor.

[0020] Figure 1 The figure is an overall schematic diagram of a water pump pre-filter device.

[0021] Figure 2 The present invention is a schematic diagram of the structure of a connecting bracket of a water pump pre-filter device.

[0022] Figure 3 This is a schematic diagram of the structure of a No. 1 drive frame of a water pump pre-filter device.

[0023] Figure 4 The figure is a schematic diagram of the structure of the No. 2 drive frame of a water pump pre-filter device.

[0024] Figure 5 The present invention is a schematic diagram of the worm gear connection structure of a water pump pre-filter device.

[0025] Reference numerals:

[0026] 100, filter assembly; 101, filter; 102, connecting pipe; 103, valve; 104, first gear; 105, main pipe;

[0027] 200, driving assembly; 201, connecting bracket; 202, driving frame No. 1; 203, driving frame No. 2; 204, connecting shaft; 205, worm wheel; 206, worm; 207, driven gear;

[0028] 201a, bearing seat; 201b, fixing ring; 201c, worm seat;

[0029] 202a, No. 1 driving frame arc; 202b, No. 1 driving rack; 202c, No. 1 driving slide;

[0030] 203a, No. 2 driving frame arc; 203b, No. 2 driving rack; 203c, second gear block; 203d, connecting rod. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0033] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0034] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0035] Example 1, reference Figure 1-2 , which is the first embodiment of the present invention, provides a water pump pre-filter device, including, through a set of precise mechanical transmission devices, the filter 101 can be cleaned and maintained without stopping the machine.

[0036] Specifically, the filter assembly 100 includes a filter 101 and connecting pipes 102 installed on both sides of the filter 101. Valves 103 are installed at the ends of the two connecting pipes 102. The valves 103 are controlled by a first gear 104. Main pipes 105 are installed at the ends of the connecting pipes 102.

[0037] Furthermore, the driving assembly 200 includes a connecting bracket 201 installed on the side wall of the main pipe 105, and the connecting bracket 201 is respectively connected to the No. 1 driving frame 202 and the No. 2 driving frame 203 on the upper and lower sides, and the No. 1 driving frame 202 and the No. 2 driving frame 203 are respectively connected to the connecting shaft 204 through gear blocks and gears, and the No. 1 driving frame 202 and the No. 2 driving frame 203 are respectively connected to the valves 103 on both sides of the filter 101 through the rack and the first gear 104, and the rack on the No. 1 driving frame 202 and the rack on the No. 2 driving frame 203 are staggered with each other. When the connecting shaft 204 rotates, the No. 1 driving frame 202 and the No. 2 driving frame 203 respectively drive the valves 103 on both sides of the two filters 101 to open and close in sequence.

[0038] Operation process: Filter 101A is in working state, and filter 101B is in standby state. Water flows through filter 101A and continues to flow after being purified. When filter 101A needs to be cleaned, the operator starts the worm motor through an external controller. The worm motor starts to run, driving the worm 206 to rotate. The worm 206 meshes with the turbine 205, and the turbine 205 rotates accordingly. The turbine 205 is fixed on the connecting shaft 204, and the connecting shaft 204 starts to rotate. The rotation of the connecting shaft 204 drives the two driven gears 207 to rotate. The rotation of the driven gear 207 drives the first drive rack 202b and the second drive rack 203b to move along the slot on the bearing seat 201a through the first drive slide 202c and the second gear block 203c that are meshed therewith. Since the racks of the first drive rack 202b and the second drive rack 203b are staggered, their movement directions are opposite. The first drive rack 202b and the second drive rack 203b are respectively meshed with the first gear 104 on the valves 103 on both sides of the filter 101. The movement of the first drive rack 202a first opens the two valves 103 of the filter 101B, and then closes the two valves 103 of the filter 101A. The water flow is smoothly switched from the filter 101A to the filter 101B, and the filter 101A enters the cleaning and maintenance state, while the filter 101B continues to work to ensure the normal operation of the system. After the filter 101A enters the cleaning and maintenance state, the operator can clean and maintain it without affecting the normal operation of the system. After the cleaning and maintenance is completed, the operator starts the worm motor again and repeats the above process to switch the water flow from the filter 101B back to the filter 101A. The filter 101B returns to the standby state, and the system resumes the normal operation mode.

[0039] Example 2, reference Figure 2 to Figure 4 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: since the two racks are staggered with each other, their moving directions are opposite, thereby respectively controlling the opening and closing of the valves on both sides of the filter to achieve smooth switching of the water flow.

[0040] Specifically, the connecting bracket 201 includes a bearing seat 201a arranged on the side wall of the connecting shaft 204, a fixing ring 201b is installed on the side wall of the bearing seat 201a, the fixing ring 201b is sleeved on the side wall of the main pipe 105, and a worm seat 201c is installed on the top of the fixing ring 201b.

[0041] Furthermore, the No. 1 driving frame 202 includes a No. 1 driving frame arc 202a arranged on the side wall of the filter 101, and a No. 1 driving rack 202b is installed at both ends of the No. 1 driving frame arc 202a, and a No. 1 driving slide 202c is installed at the end of one of the No. 1 driving racks 202b.

[0042] Furthermore, the second drive frame 203 includes a No. 2 drive frame arc 203a arranged at the bottom end of the No. 1 drive frame arc 202a, and a No. 2 drive rack 203b is installed at both ends of the No. 2 drive frame arc 203a. A second tooth block 203c is arranged on one side of the No. 2 drive rack 203b, and the second tooth block 203c is opposite to the direction of the No. 2 drive rack 203b.

[0043] Furthermore, the second driving frame 203 further includes a connecting rod 203d arranged on one side of the second gear block 203c, and the top end of the connecting rod 203d is connected to the slot on the side wall of the bearing seat 201a.

[0044] The rest of the structure is the same as that of Example 1.

[0045] Operation process: Filter 101A is in working state, and filter 101B is in standby state. Water flows through filter 101A and continues to flow after being purified. When filter 101A needs to be cleaned, the operator starts the worm motor through an external controller. The worm motor starts to run, driving the worm 206 to rotate. The worm 206 meshes with the turbine 205, and the turbine 205 rotates accordingly. The turbine 205 is fixed on the connecting shaft 204, and the connecting shaft 204 starts to rotate. The rotation of the connecting shaft 204 drives the two driven gears 207 to rotate. The rotation of the driven gear 207 drives the first drive rack 202b and the second drive rack 203b to move along the slot on the bearing seat 201a through the first drive slide 202c and the second gear block 203c that are meshed therewith. Since the racks of the first drive rack 202b and the second drive rack 203b are staggered, their movement directions are opposite. The first drive rack 202b and the second drive rack 203b are respectively meshed with the first gear 104 on the valves 103 on both sides of the filter 101. The movement of the first drive rack 202a first opens the two valves 103 of the filter 101B, and then closes the two valves 103 of the filter 101A. The water flow is smoothly switched from the filter 101A to the filter 101B, and the filter 101A enters the cleaning and maintenance state, while the filter 101B continues to work to ensure the normal operation of the system. After the filter 101A enters the cleaning and maintenance state, the operator can clean and maintain it without affecting the normal operation of the system. After the cleaning and maintenance is completed, the operator starts the worm motor again and repeats the above process to switch the water flow from the filter 101B back to the filter 101A.

[0046] The filter 101B then returns to the standby state, and the system resumes the normal operation mode.

[0047] Example 3, reference Figure 2 to Figure 5 , which is the third embodiment of the present invention. This embodiment is different from the above embodiments in that the water pump pre-filter device can clean and maintain the filter 101 without stopping the water pump, thereby ensuring the normal operation of the thermal power generation device and improving the reliability and maintenance efficiency of the system.

[0048] Specifically, a worm wheel 205 is sleeved on the side wall of the connecting shaft 204, and the tooth blocks on the side wall of the worm wheel 205 are meshed with the tooth blocks on the worm 206, and both ends of the worm 206 are installed in the worm seat 201c.

[0049] Furthermore, driven gears 207 are installed at both ends of the connecting shaft 204, and the two driven gears 207 are respectively meshed with the gear blocks on the first driving slide 202c and the second gear block 203c.

[0050] Furthermore, the connecting shaft 204 is fixed by a mounting frame on the bearing seat 201a, and the connecting shaft 204 passes through the fixing ring 201b.

[0051] Furthermore, the two No. 1 driving racks 202b of the No. 1 driving rack 202 and the two No. 2 driving racks 203b of the No. 2 driving rack 203 are staggered with each other. When the two valves 103 connected to the No. 2 driving rack 203 are opened, the two valves 103 connected to the No. 1 driving rack 202 are closed. When the two valves 103 connected to the No. 2 driving rack 203 are closed, the two valves 103 connected to the No. 1 driving rack 202 are opened.

[0052] Furthermore, the gear blocks on the first driving rack 202 b and the second driving rack 203 b are both meshed with the first gear 104 on the valve 103 .

[0053] The rest of the structure is the same as that of Example 2.

[0054] Operation process: In the initial state, one of the two filters 101 is in working state and the other is in standby state. Assume that filter 101A is in working state and filter 101B is in standby state. When filter 101A needs to be cleaned and maintained, the operator starts the worm motor through the external controller, and the worm motor drives the worm 206 to rotate. When the worm 206 rotates, the turbine 205 meshing with the worm 206 rotates accordingly, and the turbine 205 is fixed on the connecting shaft 204, so the connecting shaft 204 also starts to rotate. When the connecting shaft 204 rotates, the two driven gears 207 fixed on the connecting shaft 204 also rotate accordingly. When the driven gear 207 rotates, the first drive slide 202c and the second gear block 203c meshing with the driven gear 207 respectively drive the first drive rack 202b and the second drive rack 203b to move along the slot on the bearing seat 201a. Since the racks of the first driving rack 202b and the second driving rack 203b are staggered, the movement directions of the first driving rack 202a and the second driving rack 203a are opposite. The first driving rack 202b and the second driving rack 203b are respectively engaged with the first gear 104 on the valves 103 on both sides of the filter 101, thereby controlling the opening and closing of the valves 103.

[0055] When the No. 1 drive frame arc 202a moves, it will first open the two valves 103 of the filter 101B, and then close the two valves 103 of the filter 101A. In this way, the water flow is switched from the filter 101A to the filter 101B, and the filter 101A enters the cleaning and maintenance state. After the filter 101A enters the cleaning and maintenance state, the operator can clean and maintain it, while the filter 101B continues to work to ensure the normal operation of the water pump. After the cleaning and maintenance is completed, the operator starts the worm motor again and repeats the above process to switch the water flow from the filter 101B back to the filter 101A, and the filter 101B enters the standby state. After the cleaning and maintenance is completed, the filter 101A re-enters the working state, the filter 101B returns to the standby state, and the system resumes normal operation.

[0056] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A water pump pre-filter device, characterized in that: include, A filter assembly (100) comprises a filter (101), connecting pipes (102) arranged on both sides of the filter (101), valves (103) being installed at the ends of the two connecting pipes (102), the valves (103) being controlled by a first gear (104), and main pipes (105) being installed at the ends of the connecting pipes (102); and, The driving assembly (200) comprises a connecting bracket (201) installed on the side wall of the main pipe (105), wherein the connecting bracket (201) is respectively connected to a first driving frame (202) and a second driving frame (203) at the upper and lower sides, wherein the first driving frame (202) and the second driving frame (203) are respectively connected to a connecting shaft (204) via a tooth block and a gear, wherein the first driving frame (202) and the second driving frame (203) are respectively connected to the valves (103) on both sides of the filter (101) via a rack and a first gear (104), wherein the rack on the first driving frame (202) and the rack on the second driving frame (203) are staggered with each other, and when the connecting shaft (204) rotates, the first driving frame (202) and the second driving frame (203) respectively drive the valves (103) on both sides of the two filters (101) to open and close in sequence.

2. The water pump pre-filter device according to claim 1, characterized in that: The connecting bracket (201) comprises a bearing seat (201a) arranged on the side wall of the connecting shaft (204); a fixing ring (201b) is installed on the side wall of the bearing seat (201a); the fixing ring (201b) is sleeved on the side wall of the main pipe (105); and a worm seat (201c) is installed on the top end of the fixing ring (201b).

3. The water pump pre-filter device according to claim 2, characterized in that: The No. 1 driving frame (202) comprises a No. 1 driving frame arc (202a) arranged on the side wall of the filter (101), and a No. 1 driving rack (202b) is installed at both ends of the No. 1 driving frame arc (202a), and a No. 1 driving slide (202c) is installed at the end of one of the No. 1 driving racks (202b).

4. The water pump pre-filter device according to claim 3, characterized in that: The second drive frame (203) comprises a second drive frame arc (203a) arranged at the bottom end of the first drive frame arc (202a), a second drive rack (203b) is installed at both ends of the second drive frame arc (203a), a second tooth block (203c) is arranged on one side of the second drive rack (203b), and the second tooth block (203c) is opposite to the direction of the second drive rack (203b).

5. The water pump pre-filter device according to claim 4, characterized in that: The second drive frame (203) further comprises a connecting rod (203d) arranged on one side of the second gear block (203c), and the top end of the connecting rod (203d) is connected to a slot on the side wall of the bearing seat (201a).

6. The water pump pre-filter device according to claim 5, characterized in that: A worm wheel (205) is sleeved on the side wall of the connecting shaft (204), a tooth block on the side wall of the worm wheel (205) meshes with a tooth block on a worm (206), and two ends of the worm (206) are installed in a worm seat (201c).

7. The water pump pre-filter device according to claim 6, characterized in that: Driven gears (207) are installed at both ends of the connecting shaft (204), and the two driven gears (207) are respectively meshed with the gear blocks on the first driving slide (202c) and the second gear block (203c).

8. The water pump pre-filter device according to claim 7, characterized in that: The connecting shaft (204) is fixed via a mounting frame on the bearing seat (201a), and the connecting shaft (204) passes through the fixing ring (201b).

9. The water pump pre-filter device according to claim 8, characterized in that: The two No. 1 driving racks (202b) of the No. 1 driving rack (202) and the two No. 2 driving racks (203b) of the No. 2 driving rack (203) are staggered with each other; when the two valves (103) connected to the No. 2 driving rack (203) are opened, the two valves (103) connected to the No. 1 driving rack (202) are closed; and when the two valves (103) connected to the No. 2 driving rack (203) are closed, the two valves (103) connected to the No. 1 driving rack (202) are opened.

10. The water pump pre-filter device according to claim 9, characterized in that: The gear blocks on the first driving rack (202b) and the second driving rack (203b) are both meshed with the first gear (104) on the valve (103).

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