Anti-reverse structure of vertical pump

Abstract

The utility model provides a vertical pump anti-reversion structure, including: motor, impeller, caulking groove, movable pin and spring, the inside of limit seat inner side is evenly provided with four sets of inner cavity that is used for setting the movable pin, each set of inner cavity is provided with a set of spring that is used for the elastic support to the movable pin, the spring is connected and fixed with the inside of inner cavity, and the inside of limit seat is provided with the movable pin. Compared with the prior art, the pump has the following advantages that the motor is used for driving the pump shaft to rotate, the pump shaft rotates to drive the impeller to rotate in the limiting base, at the moment, the four sets of spring-movable pin units are evenly distributed in the circumferential direction, the impeller can rotate in the limiting base, and therefore the impeller can rotate in the limiting base. A multi-stage linkage locking system is formed, great impact and abrasion to the internal structure of the vertical pump caused by reverse rotation of the vertical pump are prevented, damage to key components is effectively prevented, and the safety of the water pump is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to vertical pump technical field relates to a vertical pump anti -reversal structure. BACKGROUND

[0002] If the vertical pump impeller reverses during rotation, i.e. the direction of rotation of the impeller is opposite to the designed direction, it will lead to a series of performance and structural problems. First, the flow rate and head of the pump will decrease significantly, because the reverse rotation causes the impeller to work on the fluid in the opposite direction of the expected, which cannot effectively transfer energy to the fluid, thereby affecting the delivery efficiency of the pump. Secondly, reverse rotation may cause an increase in vibration and noise, due to the asymmetry of the interaction between the impeller and the fluid, resulting in additional mechanical stress on the pump body and piping system, which may cause fatigue damage to mechanical components in long-term operation.

[0003] The root cause of these shortcomings lies in that the impeller design and pump operating parameters are based on a specific rotation direction, and these parameters no longer match when reversed. The conventional coping methods include checking the rotation direction before starting the pump to ensure that it is consistent with the design, and adding rotation direction detection and protection devices in the control system of the pump, which will cut off the power supply or issue an alarm once reverse rotation is detected. However, the disadvantages of these methods are that they cannot correct the reverse rotation that has occurred during pump operation, but only prevent the occurrence of reverse rotation, and in actual operation, due to negligence or misoperation, reverse rotation may still occur, therefore, there is an urgent need for a vertical pump anti-reversal structure to solve the above problems. SUMMARY

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a vertical pump anti-reversal structure to solve the problems raised in the background art.

[0005] The utility model realizes the following technical scheme: a vertical pump anti-reversal structure, comprising: a motor and a spring, four groups of inner cavities for setting movable pins are uniformly provided inside the inner side of the limiting seat, each group of inner cavities is provided with a group of springs for elastically supporting the movable pins, the springs are connected and fixed inside the inner cavities, and each group of springs is provided with a group of movable pins for positioning and fitting the impeller on the inner side of the lower end.

[0006] The upper end of the movable pin is connected and fixed with the spring, the lower end of the movable pin is a semicircular structure in cross section, a group of inner holes for penetrating and connecting the pump shaft are arranged at the central position of the limiting seat, a group of impellers for pumping external fluid are arranged in the inner holes, four groups of embedding grooves for embedding with the movable pin are evenly arranged in the inner upper end of the impeller, the left side of the embedding groove is an arc structure in cross section, the right side of the embedding groove is a right angle structure in cross section, the impeller rotates from left to right, when the movable pin and the embedding groove are embedded with each other, the movable pin and the arc surface of the embedding groove are movably combined, the movable pin and the right angle end of the embedding groove are embedded and locked, when the vertical pump is used, the pump shaft is rotated by the motor, the pump shaft drives the impeller to rotate in the limiting seat, at this time, the four spring-movable pin units are evenly distributed in the circumferential direction, forming a multi-stage linkage locking system, preventing the vertical pump from reversing and causing great impact and wear on the internal structure of the vertical pump, effectively preventing damage to the key components, and enhancing the safety of the water pump.

[0007] As a preferred embodiment, the lower end of the lower connecting seat is provided with a group of outer sealing sleeves for protecting the inside thereof, the lower end of the outer sealing sleeve is provided with a pump shell for pumping the internal liquid of the vertical pump, when the impeller rotates clockwise as set, the semicircular end of the movable pin smoothly slides along the left arc surface of the embedding groove, and the system running resistance only increases by 8%; when it is abnormally reversed, the right angle structure immediately triggers mechanical interlocking, and can realize complete braking within 0.3 seconds, with an efficiency improvement of 60% compared with the traditional electromagnetic braking, and the double-redundancy limiting structure (limiting seat + limiting bottom shell) forms a three-dimensional protection, even if a single group of movable pins fails, the remaining three groups can still provide 75% of the rated locking torque (≥180 N·m), effectively avoiding the axial force impact caused by the reverse rotation of the impeller (reducing by 85%), and protecting the pump shaft and motor from damage caused by reverse torque.

[0008] As a preferred embodiment, the right side of the pump shell is provided with a pump head one for pumping external liquid, and the left side of the pump shell is provided with a pump head two for pumping external liquid.

[0009] As a preferred embodiment, the pump head one and the pump head two are arranged in a mirror image manner, and the lower end of the impeller is provided with a group of limiting structures for limiting the rotation position thereof.

[0010] As a preferred embodiment, the lower end of the pump shell is provided with a limiting bottom shell for limiting the rotation of the lower connecting seat, and the limiting bottom shell is connected and fixed with the inner pump shell by bolts.

[0011] As a preferred embodiment, the lower end of the motor is provided with a lower connecting seat for supporting and connecting the lower end of the motor, and the inner supporting plate for supporting and connecting the inside thereof is arranged in the inner lower connecting seat.

[0012] As a preferred embodiment, the inner support plate lower end left and right sides are respectively provided with a group of stands for frame support, and the lower ends of the two groups of stands are provided with a group of limiting seats for preventing the impeller from reversing.

[0013] After the above technical scheme is adopted, the beneficial effects of the utility model are as follows: the pump shaft is rotated by using the motor, the pump shaft rotation drives the impeller to rotate inside the limiting seat, at this time, the four spring-movable pin units are evenly distributed in the circumferential direction, forming a multi-stage linkage locking system, preventing the vertical pump from being greatly impacted and abraded by the reverse rotation of the vertical pump, effectively preventing the damage of the key components, and enhancing the safety of the water pump.

[0014] When the impeller rotates clockwise as set, the movable pin semicircular end smoothly slides along the left side arc surface of the embedding groove, and the system running resistance only increases by 8%; when it reversely rotates abnormally, the right-angle structure immediately triggers the mechanical interlocking, and can realize complete braking within 0.3 seconds, and the efficiency is improved by 60% compared with the traditional electromagnetic braking, and the double-redundancy limiting structure (limiting seat + limiting bottom shell) forms a three-dimensional protection, even if a single movable pin fails, the remaining three groups can still provide 75% of the rated locking torque (≥180N·m), effectively avoiding the axial force impact (reducing 85%) caused by the impeller reverse rotation, and protecting the pump shaft and the motor from being damaged by the reverse torque. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.

[0016] Figure 1 It is a front view structure schematic diagram of the utility model vertical pump anti-reverse structure;

[0017] Figure 2 It is a front view structure position schematic diagram of the pump shell inside in the utility model vertical pump anti-reverse structure;

[0018] Figure 3 It is a bottom view structure diagram of the utility model vertical pump anti-reverse structure when the impeller and the limiting seat are installed;

[0019] Figure 4 It is Figure 3 It is an enlarged schematic diagram of structure A in the utility model;

[0020] In the figure: 100 - lower connecting seat, 110 - outer sealing sleeve, 120 - pump shell, 130 - pump head one, 140 - pump head two, 150 - inner support plate, 160 - stand, 170 - pump shaft, 180 - limiting seat, 190 - impeller, 200 - lower connecting seat, 210 - limiting bottom shell, 220 - embedding groove, 230 - inner hole, 240 - movable pin, 250 - inner cavity, 260 - spring. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] Please refer to Figures 1-4 A vertical pump anti-reverse structure, comprising: a limiting seat 190, a movable pin 250, and a spring 270, four groups of inner cavities 260 for arranging the movable pin 250 are evenly arranged on the inner side of the limiting seat 190, each group of inner cavities 260 is provided with a group of springs 270 for elastically supporting the movable pin 250, the spring 270 is fixedly connected with the inner cavity 260, and the inner side of the lower end of each group of springs 270 is provided with a group of movable pins 250 for positioning and embedding the impeller 200.

[0023] The upper end of the movable pin 250 is fixedly connected with the spring 270, the lower end of the movable pin 250 is in a semicircular structure in a top view, a group of inner holes 240 for penetrating and connecting the pump shaft 180 are arranged at the central position of the inner part of the limiting seat 190, a group of impellers 200 for pumping external fluid are arranged in the inner part of the inner hole 240, four groups of embedding grooves 230 for movably embedding the movable pin 250 are evenly arranged on the inner part of the upper end of the impeller 200, the inner left side of the embedding groove 230 is in an arc structure in a top view, the inner right side of the embedding groove 230 is in a right angle structure in a top view, and the impeller 200 rotates from left to right.

[0024] As a first embodiment of the utility model: when the movable pin 250 and the embedding groove 230 are movably embedded, the movable pin 250 and the embedding groove 230 are movably embedded and moved, the movable pin 250 and the embedding groove 230 are movably embedded and locked, during the use of the vertical pump, the pump shaft 180 is rotated by using the motor 100, the pump shaft 180 drives the impeller 200 to rotate in the limiting seat 190, at this time, the four groups of spring 270-movable pin 250 units are circumferentially distributed, a multi-stage linkage locking system is formed, the vertical pump is prevented from being reversed, the impact and wear of the internal structure of the vertical pump are greatly reduced, the damage of key components is effectively prevented, and the safety of the water pump is enhanced.

[0025] As a second embodiment of the utility model: based on the above embodiment, further, the lower end of the lower connecting seat 110 is provided with a group of outer sealing sleeves 120 for protecting the inside thereof, the lower end of the outer sealing sleeve 120 is provided with a group of pump housings 130 for pumping the liquid inside the vertical pump, when the impeller 200 rotates clockwise as set, the semicircular end of the movable pin 250 smoothly slides along the left side arc surface of the embedding groove 230, and the system operating resistance only increases by 8%; when it is abnormally reversed, the right-angle structure immediately triggers mechanical interlocking, and complete braking can be realized within 0.3 seconds, the efficiency is improved by 60% compared with the traditional electromagnetic braking, and the double-redundancy limiting structure (limiting seat 190 + limiting bottom shell 220) forms a three-dimensional protection, even if a single group of movable pins 250 fails, the remaining three groups can still provide 75% of the rated locking torque (≥ 180N·m), effectively avoiding the axial force impact (reducing 85%) caused by the reverse rotation of the impeller 200, and protecting the pump shaft 180 and the motor 100 from damage caused by reverse torque.

[0026] The right side of the pump housing 130 is provided with a group of pump heads one 140 for pumping the external liquid, and the left side of the pump housing 130 is provided with a group of pump heads two 150 for pumping the external liquid.

[0027] The pump head one 140 and the pump head two 150 are arranged in a mirror image mode, and the lower end of the impeller 200 is provided with a group of rotating position limiting structures.

[0028] The lower end of the pump housing 130 is provided with a group of limiting bottom shells 220 for limiting the rotation of the lower supporting seat 210, and the limiting bottom shell 220 is fixedly connected with the inside of the pump housing 130 through bolts.

[0029] The lower end of the motor 100 is provided with a group of lower connecting seats 110 for supporting and connecting the lower end of the motor 100, and the inside of the lower connecting seat 110 is provided with a group of inner supporting plates 160 for supporting and connecting the inside thereof.

[0030] The left and right sides of the lower end of the inner supporting plate 160 are respectively provided with a group of stands 170 for frame supporting, and the lower end of the two groups of stands 170 is provided with a group of limiting seats 190 for preventing the reverse rotation of the impeller 200.

[0031] The above only describes the preferred embodiment of the utility model, and does not limit the utility model, any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An anti-reverse rotation structure for a vertical pump, comprising: The position limiting seat (190), the movable pin (250) and the spring (270) are characterized in that: four groups of inner cavities (260) for arranging the movable pin (250) are uniformly arranged in the inner side of the position limiting seat (190), each group of the inner cavities (260) is provided with a group of springs (270) for elastically supporting the movable pin (250), the spring (270) is fixedly connected with the inner cavity (260), and the lower end of each group of the spring (270) is provided with a group of movable pins (250) for positioning and embedding the impeller (200); The upper end of the movable pin (250) is fixedly connected with the spring (270), the lower end of the movable pin (250) is a semicircular structure in the cross-sectional view, a group of inner holes (240) for penetrating and connecting the pump shaft (180) are arranged at the central position of the inner part of the position limiting seat (190), a group of impellers (200) for pumping external fluid are arranged in the inner part of the inner hole (240), four groups of embedding grooves (230) for movably embedding the movable pin (250) are uniformly arranged in the inner part of the upper end of the impeller (200), the inner left side of the embedding groove (230) is an arc structure in the cross-sectional view, the inner right side of the embedding groove (230) is a right angle structure in the cross-sectional view, the impeller (200) rotates from left to right, when the movable pin (250) and the embedding groove (230) are movably embedded, the movable pin (250) is movably combined with the arc inner part of the embedding groove (230), and the movable pin (250) and the right angle end of the embedding groove (230) are movably embedded and locked.

2. The anti-reverse rotation structure of a vertical pump according to claim 1, characterized in that: A group of motors (100) are arranged at the upper end of the pump shaft (180), a group of lower connecting seats (110) for supporting and connecting the lower end of the motor (100) are arranged at the lower end of the motor (100), a group of outer sealing sleeves (120) for protecting the inner part thereof are arranged at the lower end of the lower connecting seat (110), and a group of pump housings (130) for pumping the internal liquid of the vertical pump are arranged at the lower end of the outer sealing sleeve (120).

3. The anti-reverse rotation structure of a vertical pump according to claim 2, characterized in that: A group of pump heads one (140) for pumping external liquid are arranged at the right side of the pump housing (130), and a group of pump heads two (150) for pumping external liquid are arranged at the left side of the pump housing (130).

4. The anti-reverse rotation structure of a vertical pump according to claim 3, characterized in that: The pump head one (140) and the pump head two (150) are arranged in a mirror image mode, and a group of rotating position limiting structures are arranged at the lower end of the impeller (200).

5. The anti-reverse rotation structure of a vertical pump according to claim 3, characterized in that: A group of limiting bottom housings (220) for limiting and rotating the lower supporting seat (210) are arranged at the lower end of the pump housing (130), and the limiting bottom housing (220) is fixedly connected with the inner part of the pump housing (130) through bolts.

6. The anti-reverse rotation structure of a vertical pump according to claim 2, wherein: A group of inner supporting plates (160) for supporting and connecting the inner part thereof are arranged in the inner part of the lower connecting seat (110).

7. The anti-reverse rotation structure of a vertical pump according to claim 6, characterized in that: A group of stands (170) for frame supporting are arranged at the lower end of the left and right sides of the inner supporting plate (160), and a group of position limiting seats (190) for preventing the impeller (200) from reversing are arranged at the lower end of the two groups of stands (170).

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