Timing variable-frequency speed regulator of water pump

Abstract

The timing variable-frequency speed regulator comprises a mounting plate and a variable-frequency speed regulator body, the variable-frequency speed regulator body is mounted on the outer surface of the mounting plate, a sealing cover is arranged on the surface of the variable-frequency speed regulator body, and U-shaped plates are arranged on the upper side and the lower side of the interior of the mounting plate in a penetrating mode. Two parallel U-shaped pressing blocks are slidably mounted on the outer surfaces, located on the outer side of the mounting plate, of the two U-shaped plates, first wedge-shaped blocks are mounted at the two ends, located in the mounting plate, of the U-shaped plates, and four second wedge-shaped blocks are mounted in the mounting plate through a moving mechanism. The moving mechanism and the driving mechanism are in transmission fit to drive the second wedge-shaped block to extrude the first wedge-shaped block, so that the U-shaped plate can be driven to contract towards the interior of the variable-frequency governor body, the U-shaped pressing block is driven to be pressed on the outer surface of the sealing cover, and the purpose of assembling the sealing cover and the variable-frequency governor body is achieved, so that the use of bolts is avoided, the disassembly and assembly efficiency is improved, and the production cost is reduced. And the maintenance and repair complexity and the time cost are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of variable frequency speed regulators, in particular to a timing variable frequency speed regulator for a water pump. Background Art

[0002] A variable frequency speed controller (VFD) controls the speed of a motor by adjusting the frequency of its power supply. It can adjust the motor's operating speed in real time based on load demand and process requirements, thereby saving energy, improving system efficiency, and extending equipment life. VFDs are widely used in fans, pumps, and other industrial machinery.

[0003] Existing variable frequency speed regulators for water pumps are usually packaged with bolts. When the internal part of the variable frequency speed regulator needs to be repaired, the disassembly and reinstallation process may be relatively complicated. In addition, the bolts are prone to rust after long-term use. Rusted bolts further make disassembly difficult, increasing the complexity and time cost of maintenance and repair. Utility Model Content

[0004] The utility model aims to provide a water pump timing frequency conversion speed regulator which is easy to maintain and repair.

[0005] To achieve the above objectives, the technical solution of the present utility model is as follows.

[0006] A water pump timing variable frequency speed regulator includes a mounting plate and a variable frequency speed regulator body. The variable frequency speed regulator body is mounted on the outer surface of the mounting plate. A cover is provided on the surface of the variable frequency speed regulator body. U-shaped plates are provided through the upper and lower sides of the interior of the mounting plate. Two U-shaped plates are located on the outer surfaces of the outer sides of the mounting plate and are slidably mounted with two mutually parallel U-shaped pressure blocks. First wedge blocks are installed at both ends of the U-shaped plates located inside the mounting plate. Four second wedge blocks are installed inside the mounting plate through a moving mechanism. A driving mechanism that cooperates with the moving mechanism is provided inside the mounting plate.

[0007] The U-shaped pressing block is pressed against the outer surface of the cover to achieve the purpose of assembling the cover and the frequency converter body, thereby avoiding the use of bolts, improving the efficiency of disassembly and assembly, and reducing the complexity and time cost of maintenance and repair. The two U-shaped pressing blocks have a large contact area with the cover and a wide coverage range, and the two U-shaped pressing blocks are subjected to force at the same time, so that the cover as a whole is subjected to uniform force, avoiding the situation where the tightening force between the bolts is inconsistent when multiple bolts are tightened, resulting in poor sealing effect.

[0008] Furthermore, the moving mechanism includes a threaded rod with a pair of reverse threads rotatably installed inside the frequency converter body along the length direction of the frequency converter body, nuts are installed on the two reverse threads of the threaded rod, connecting plates are installed on the outer surfaces of both sides of the nuts, and the ends of the connecting plates are slidably connected to the inner wall of the frequency converter body, and four second wedge blocks are respectively installed on the outer surfaces of the four connecting plates.

[0009] Since the connecting plate is slidably connected to the inner wall of the variable frequency speed regulator body, it can limit the nut. Therefore, when the threaded rod rotates, it can drive the nut to move. Due to the setting of the reverse thread, the two nuts move in opposite directions at the same time, and at the same time drive the four second wedge blocks to squeeze the first wedge block, driving the two U-shaped pressure blocks to press against the outer surface of the cover at the same time.

[0010] Furthermore, the driving mechanism includes a worm installed inside the frequency converter body and rotating along the width direction of the frequency converter body. The outer surface of the threaded rod is sleeved with a worm wheel, and the worm is meshed with the worm wheel. One end of the worm passes through the outside of the frequency converter body and is installed with a knob.

[0011] When the knob is turned, the worm is driven to rotate. Since the worm is meshed with the worm wheel, the threaded rod is driven to rotate. In addition, since the worm and the worm wheel have good self-locking properties, the stability of the assembly of the cover and the frequency converter body can be guaranteed, and loose connections can be reduced.

[0012] Furthermore, a spring is connected to the lower surface of the first wedge-shaped block, and an end of the spring is connected to the inner wall of the variable frequency speed regulator body.

[0013] When the second wedge block squeezes the first wedge block, the first wedge block compresses the spring. When the second wedge block moves away from the first wedge block, the compressed spring releases its elastic force, pushing the first wedge block to reset upward and driving the U-shaped pressure block to separate from the outer surface of the cover. The U-shaped pressure block can then be slid to the side and the cover can be removed.

[0014] Furthermore, the outer surface of the cover is provided with two mutually parallel slots, which are adapted to fit the U-shaped pressing block.

[0015] By setting the clamping groove, the pressing effect of the U-shaped pressing block on the cover can be improved, avoiding the situation of sliding displacement.

[0016] Furthermore, a groove is provided on the outer surface of the variable frequency speed regulator body, a sealing gasket is provided inside the groove, and a convex strip is installed on the outer surface of the cover.

[0017] The provision of the grooves and ridges can play a positioning role when the cover is assembled with the frequency converter body, and the provision of the sealing gasket can further improve the sealing between the two, thereby ensuring safe and stable operation inside the frequency converter body.

[0018] Furthermore, a timer is installed inside the variable frequency speed regulator body.

[0019] By setting the timer, the operating time of the variable frequency speed regulator body can be set according to actual needs to avoid unnecessary operation, thereby saving energy, reducing manual intervention, and improving the convenience and consistency of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0021] Figure 2 It is a structural diagram of the moving mechanism and the driving mechanism in the utility model;

[0022] Figure 3 This is a structural diagram of the variable frequency speed regulator body and cover in the utility model;

[0023] Figure 4 for Figure 2 A is an enlarged schematic diagram.

[0024] In the figure: 100, mounting plate; 101, frequency converter body; 102, cover; 103, U-shaped plate; 104, U-shaped pressure block; 105, first wedge block; 106, second wedge block; 200, moving mechanism; 201, threaded rod; 202, nut; 203, connecting plate; 300, driving mechanism; 301, worm; 302, worm gear; 303, knob; 400, spring; 500, slot; 600, groove; 601, ridge; 700, timer. DETAILED DESCRIPTION

[0025] The present invention is described in detail below with reference to the accompanying drawings.

[0026] like Figure 1-4 As shown, a water pump timing variable frequency speed regulator includes a mounting plate 100 and a variable frequency speed regulator body 101. The variable frequency speed regulator body 101 is mounted on the outer surface of the mounting plate 100. A cover 102 is provided on the surface of the variable frequency speed regulator body 101. U-shaped plates 103 are provided on the upper and lower sides of the interior of the mounting plate 100. Two U-shaped plates 103 are located on the outer surfaces of the outer sides of the mounting plate 100 and are slidably installed with two parallel U-shaped pressure blocks 104. First wedge blocks 105 are installed at both ends of the U-shaped plates 103 located inside the mounting plate 100. Four second wedge blocks 106 are installed inside the mounting plate 100 through a moving mechanism 200. A driving mechanism 300 that cooperates with the moving mechanism 200 is provided inside the mounting plate 100.

[0027] When in use, the mounting plate 100 is fixed with bolts. When the frequency converter body 101 fails and the cover 102 needs to be opened for maintenance, the four second wedge blocks 106 can be driven to separate from the first wedge block 105 at the same time by the transmission cooperation of the moving mechanism 200 and the driving mechanism 300. At this time, the U-shaped plate 103 is no longer subjected to the pulling force toward the inside of the mounting plate 100, so the U-shaped pressing block 104 can be slid from the surface of the cover 102 to the side, and then the cover 102 can be opened. The frequency converter body 101 can be quickly disassembled for maintenance work inside. After the maintenance is completed, it is only necessary to cover the outer surface of the frequency converter body 101 with the cover 102, and then slide the two U-shaped pressure blocks 104 to the outer surface of the cover 102. Then, the transmission cooperation of the moving mechanism 200 and the driving mechanism 300 is used to drive the second wedge block 106 and the first wedge block 105 to be squeezed again, so that the U-shaped pressure blocks 104 can be pressed tightly against the outer surface of the cover 102, thereby achieving the purpose of rapid assembly.

[0028] Specifically, the moving mechanism 200 includes a threaded rod 201 with a pair of reverse threads rotatably installed inside the variable frequency speed regulator body 101 along the length direction thereof, and a nut 202 is installed on the two reverse threads of the threaded rod 201. A connecting plate 203 is installed on the outer surfaces of both sides of the nut 202, and the ends of the connecting plates 203 are slidably connected to the inner wall of the variable frequency speed regulator body 101, and four second wedge blocks 106 are respectively installed on the outer surfaces of the four connecting plates 203. Since the connecting plates 203 are slidably connected to the inner wall of the variable frequency speed regulator body 101, they can limit the nuts 202. Therefore, when the threaded rod 201 rotates, it can drive the nuts 202 to move, and due to the setting of the reverse threads, the two nuts 202 move in opposite directions at the same time, and at the same time drive the four second wedge blocks 106 to squeeze the first wedge block 105, driving the two U-shaped pressure blocks 104 to press on the outer surface of the cover 102 at the same time.

[0029] Specifically, the driving mechanism 300 includes a worm 301 installed inside the frequency converter body 101 and rotating along the width direction of the frequency converter body 101. The outer surface of the threaded rod 201 is sleeved with a worm wheel 302, and the worm 301 is meshed with the worm wheel 302. One end of the worm 301 passes through the outside of the frequency converter body 101 and is installed with a knob 303. When the knob 303 is turned, the worm 301 can be driven to rotate. Since the worm 301 is meshed with the worm wheel 302, the purpose of driving the threaded rod 201 to rotate is achieved. In addition, since the worm 301 and the worm wheel 302 have good self-locking properties, the stability of the assembly of the cover 102 and the frequency converter body 101 can be guaranteed, and the loose connection can be reduced.

[0030] Specifically, the lower surface of the first wedge block 105 is connected to a spring 400, and the end of the spring 400 is connected to the inner wall of the frequency converter body 101. When the second wedge block 106 squeezes the first wedge block 105, the first wedge block 105 will compress the spring 400. When the second wedge block 106 moves away from the first wedge block 105, the compressed spring 400 releases its elastic force, pushing the first wedge block 105 to reset upward, and driving the U-shaped pressure block 104 to separate from the outer surface of the cover 102. Then the U-shaped pressure block 104 can be slid to the side and the cover 102 can be removed.

[0031] Specifically, two parallel slots 500 are provided on the outer surface of the cover 102, which are matched with the U-shaped pressing block 104. The arrangement of the slots 500 can improve the pressing effect of the U-shaped pressing block 104 on the cover 102, thereby avoiding sliding displacement.

[0032] Specifically, a groove 600 is provided on the outer surface of the variable frequency speed regulator body 101, a sealing gasket is provided inside the groove 600, and a ridge 601 is installed on the outer surface of the cover 102. Through the setting of the groove 600 and the ridge 601, the cover 102 can play a positioning role when assembled with the variable frequency speed regulator body 101, and through the setting of the sealing gasket, the sealing between the two can be further improved, thereby ensuring the safe and stable operation of the variable frequency speed regulator body 101.

[0033] Specifically, a timer 700 is installed inside the variable frequency speed regulator body 101. By setting the timer 700, the operating time of the variable frequency speed regulator body 101 can be set according to actual needs to avoid unnecessary operation, thereby achieving energy saving, reducing manual intervention, and improving the convenience and consistency of operation.

[0034] The above is a detailed description of the present invention in conjunction with specific embodiments, and the specific implementation methods of the present invention are not limited to these descriptions. For those skilled in the art of the present invention, if a number of equivalent substitutions or obvious modifications are made without departing from the concept of the present invention and have the same performance or use, they should be considered to fall within the scope of patent protection of the present invention as determined by the submitted claims.

Claims

1. A water pump timing variable frequency speed regulator, comprising a mounting plate (100) and a variable frequency speed regulator body (101), wherein the variable frequency speed regulator body (101) is mounted on the outer surface of the mounting plate (100), characterized in that: A cover (102) is provided on the surface of the variable frequency speed regulator body (101), and U-shaped plates (103) are provided on both the upper and lower sides of the interior of the mounting plate (100), and two U-shaped pressing blocks (104) are slidably installed on the outer surfaces of the two U-shaped plates (103) located outside the mounting plate (100), and first wedge blocks (105) are installed at both ends of the U-shaped plates (103) located inside the mounting plate (100), and four second wedge blocks (106) are installed inside the mounting plate (100) through a moving mechanism (200), and a driving mechanism (300) that cooperates with the moving mechanism (200) is provided inside the mounting plate (100).

2. A water pump timing variable frequency speed regulator according to claim 1, characterized in that: The moving mechanism (200) comprises a threaded rod (201) having a pair of reverse threads rotatably mounted inside the variable frequency speed regulator body (101) along its length direction, nuts (202) being mounted on both reverse threads of the threaded rod (201), connecting plates (203) being mounted on both outer surfaces of the nuts (202), and ends of the connecting plates (203) being slidably connected to the inner wall of the variable frequency speed regulator body (101), and four second wedge blocks (106) being mounted on the outer surfaces of the four connecting plates (203), respectively.

3. A water pump timing variable frequency speed regulator according to claim 2, characterized in that: The driving mechanism (300) includes a worm (301) installed inside the variable frequency speed regulator body (101) so as to rotate along the width direction thereof, a worm wheel (302) is sleeved on the outer surface of the threaded rod (201), and the worm (301) is meshedly connected with the worm wheel (302), and one end of the worm (301) passes through the outside of the variable frequency speed regulator body (101) and is installed with a knob (303).

4. A water pump timing variable frequency speed regulator according to claim 3, characterized in that: A spring (400) is connected to the lower surface of the first wedge-shaped block (105), and an end of the spring (400) is connected to the inner wall of the variable frequency speed regulator body (101).

5. A water pump timing variable frequency speed regulator according to claim 4, characterized in that: Two mutually parallel slots (500) are provided on the outer surface of the sealing cover (102), and the slots (500) are adapted to fit the U-shaped pressing block (104).

6. The water pump timing variable frequency speed regulator according to claim 1, characterized in that: The outer surface of the variable frequency speed regulator body (101) is provided with a groove (600), a sealing gasket is provided inside the groove (600), and a convex strip (601) is installed on the outer surface of the cover (102).

7. The water pump timing variable frequency speed regulator according to claim 1, characterized in that: A timer (700) is installed inside the variable frequency speed regulator body (101).

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