Variable frequency water pump

Abstract

The utility model relates to the technical field of water pumps, and discloses a variable frequency water pump which comprises a bottom plate, a variable frequency motor is installed on the top of the bottom plate, and an impeller pump is installed at the left end of the variable frequency motor. The water pipe is connected to the outer portion of the water passing pipe in a sleeving mode, the outer portion of the water passing pipe is sleeved with an annular shell, an inner transmission ring is inserted into the annular shell, and a swing arm is installed on the front portion of the inner transmission ring in the circumferential direction through a bearing; the external pressure supporting rod is connected to the front part of the swing arm; the inserting pin is sleeved with the spring, and the bottom of the inner transmission ring is connected with a T-shaped pin; according to the variable frequency water pump, when the water pump is used, the annular shell is arranged outside the water passing pipe in a sleeving mode through the additionally-arranged external pressure supporting rod, so that the external pressure supporting rod is pressed and covered on the connecting position of the water pipe and the water passing pipe, and therefore the external pressure supporting rod can be contracted and expanded along with expansion of the water pipe under the cooperation of the spring to absorb stress brought by pressure changes in the water pipe; therefore, the influence on the joint is reduced, and the risks of water leakage and falling off are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to water pump technical field, concretely is variable frequency water pump. BACKGROUND

[0002] Water pump is the mechanical of conveying liquid or making liquid pressure increase, it transmits the mechanical energy or other external energy of prime mover to liquid, makes liquid energy increase, mainly used to convey liquid including water, oil, acid and alkali liquid, emulsion, suspension emulsion and liquid metal etc.

[0003] Common variable frequency water pump adjusts the rotating speed of motor by changing the power supply frequency of motor, when the water pump system needs to adjust flow or lift, the frequency output of frequency converter will be adjusted according to the control signal of system, so as to change the rotating speed of motor, realize the adjustment of flow and lift of water pump.

[0004] But this way, when the power of variable frequency water pump increases, the pressure in the water pipe will increase, so as to cause the expansion of water pipe connection, water leakage and even falling, reduce the use quality of water pump, can not meet the working requirement of water pump, therefore, variable frequency water pump is proposed. UTILITY MODEL CONTENTS

[0005] In view of the deficiency of prior art, the utility model provides variable frequency water pump to solve the technical problem that when the power of variable frequency water pump increases, the pressure in the water pipe will increase, so as to cause the expansion of water pipe connection, water leakage and even falling.

[0006] To realize above-mentioned purpose, the utility model provides the following technical scheme: variable frequency water pump, including:

[0007] The bottom plate is provided with a variable frequency motor on the top, a vane pump is arranged on the left end of the variable frequency motor, a variable frequency controller is arranged on the right side of the top of the variable frequency motor, and a water pipe is connected to the left end and the upper middle part of the vane pump.

[0008] The water pipe is sleeved on the outside of the water pipe, the water pipe is provided with an annular shell on the outside, the annular shell is provided with an inner transmission ring in the inside, the front part of the inner transmission ring is provided with a swing arm through the bearing in the circumferential direction.

[0009] The outer pressure support rod is connected to the front part of the swing arm, the right side of the inside of the inner transmission ring is provided with a first through groove, the lower side of the inside of the inner transmission ring is provided with a second through groove, and the left side of the inside of the second through groove is provided with a plug-in pin.

[0010] The spring is sleeved on the outside of the insertion pin, the bottom of the inner transmission ring is connected with a T-shaped pin, the T-shaped pin penetrates the inside of the second through groove, and the right end of the spring is connected with the outside of the T-shaped pin.

[0011] Preferably, the number of the swing arms and the outer pressure supporting rods is at least three groups, and the outer sides of the outer pressure supporting rods are all sleeved with hard rubber sleeves, so that the friction between the outer pressure supporting rods and the outside of the water pipe is improved.

[0012] Preferably, the outer sides of the swing arms are all connected with the front side of the annular shell through rotating shafts, and the upper right corner of the outer side of the annular shell is connected with a lever, so that the leverage is facilitated.

[0013] Preferably, the right side of the inner transmission ring is connected with a handle, the outer end of the handle penetrates the inside of the first through groove, and the outside of the handle is provided with anti-skid lines, so that the rotation of the inner transmission ring is facilitated by the handle.

[0014] Preferably, the middle positions of the upper and lower sides of the annular shell are all connected with mounting plates, and the outside of the mounting plates is all provided with rotating columns.

[0015] Preferably, the inside of the rotating column is all screwed with a screw rod, and the inner end of the screw rod is all mounted with an arc-shaped pressing piece through a ball bearing, so that the screw rod drives the up-down movement of the arc-shaped pressing piece, and the arc-shaped pressing pieces on the upper and lower sides are clamped on the outside of the water pipe, so that the annular shell is facilitated to be disassembled and assembled.

[0016] Preferably, the edges of the arc-shaped pressing pieces are all provided with round corners, and the outer end of the screw rod is all coaxially mounted with a rotating disc, so that the rotation is facilitated.

[0017] Compared with the prior art, the variable frequency water pump provided by the utility model can sleeve the annular shell on the outside of the water pipe when the water pump is used, so that the outer pressure supporting rod is pressed on the connection between the water pipe and the water pipe, and the outer pressure supporting rod is expanded or contracted with the expansion of the water pipe under the cooperation of the spring, so that the stress caused by the pressure change in the water pipe is absorbed, the influence on the connection is reduced, the risk of leakage and falling is reduced, the outer pressure supporting rod can provide additional supporting force, the water pipe is prevented from being excessively deformed or displaced under high pressure, the stability and safety of the water pipe system are maintained, and the quality of the use of the variable frequency water pump is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic view of the utility model;

[0019] Figure 2 It is a structural schematic view of the water pipe and the annular shell of the utility model;

[0020] Figure 3 It is a structural schematic view of the annular shell and the inner transmission ring of the utility model;

[0021] Figure 4 It is the cross-sectional structure schematic view of the annular shell of the utility model;

[0022] Figure 5 It is the structure schematic view of the mounting plate and the screwing column of the utility model. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be apparently and completely described in combination with the drawings in the embodiments of the utility model. Apparently, 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 the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] The utility model provides a kind of variable frequency water pump, including bottom plate 1, frequency conversion motor 2, frequency conversion controller 3, impeller pump 4, water pipe 5, water pipe 6, annular shell 7, inner transmission ring 8, swing arm 9, outer pressure strut 10, lever 11, first through slot 12, second through slot 13, grip lever 14, plug-in pin 15, spring 16, T-shaped pin 17, mounting plate 18, screwing column 19, screw 20 and arc-shaped tablet 21:

[0025] Please refer to Figure 1 , the top of bottom plate 1 is equipped with frequency conversion motor 2, the left end of frequency conversion motor 2 is equipped with impeller pump 4, the top right side of frequency conversion motor 2 is equipped with frequency conversion controller 3, and the left end middle part and the upper side middle part of impeller pump 4 are connected with water pipe 5;

[0026] Water pipe 6, sleeve connection is in the outside of water pipe 5, please refer to Figure 2 , the outside of water pipe 5 is equipped with annular shell 7, please refer to Figure 3 And Figure 4 , annular shell 7 is inserted with inner transmission ring 8 in the inside, and swing arm 9 is installed in the front of inner transmission ring 8 through bearing circumferentially;

[0027] Outer pressure strut 10 is connected in the front of swing arm 9, first through slot 12 is opened in the inside right side of inner transmission ring 8, second through slot 13 is opened in the inside lower side of inner transmission ring 8, and plug-in pin 15 is inserted in the inside left side of second through slot 13;

[0028] The spring 16 is sleeved on the outside of the insertion pin 15, the bottom of the inner transmission ring 8 is connected with a T-shaped pin 17, the T-shaped pin 17 penetrates the inside of the second through slot 13, the right end of the spring 16 is connected with the outside of the T-shaped pin 17, the number of the swing arm 9 and the outer pressure supporting rod 10 is at least three groups, the outside of the outer pressure supporting rod 10 is sleeved with a hard rubber sleeve, the outside of the swing arm 9 is connected with the corresponding position of the front side of the annular shell 7 through a rotating shaft, the upper right corner of the outside of the annular shell 7 is connected with a push rod 11, the right side of the inner transmission ring 8 is connected with a holding rod 14, the outer end of the holding rod 14 penetrates the inside of the first through slot 12, the outside of the holding rod 14 is provided with an anti-skid pattern, through the added outer pressure supporting rod 10, when the water pump is used, the annular shell 7 is first sleeved on the outside of the water pipe 5, so that the outer pressure supporting rod 10 is pressed on the connection between the water pipe 6 and the water pipe 5, so that the outer pressure supporting rod 10 is expanded with the expansion of the water pipe 6 under the cooperation of the spring 16, the stress caused by the pressure change in the water pipe 6 is absorbed, so that the influence on the connection is reduced, the risk of leakage and falling is reduced, and the outer pressure supporting rod 10 can provide additional supporting force to prevent the water pipe 6 from being deformed or displaced excessively under high pressure, maintain the stability and safety of the water pipe 6, and improve the quality of the use of the variable frequency water pump;

[0029] Please refer to Figure 2 The upper and lower sides of the annular shell 7 are connected with mounting plates 18, please refer to Figure 5 The outside of the mounting plate 18 is provided with a rotating column 19, the inside of the rotating column 19 is screwed with a screw rod 20, the inner end of the screw rod 20 is installed with an arc-shaped pressing piece 21 through a ball bearing, the edge of the arc-shaped pressing piece 21 is provided with a round corner, and the outer end of the screw rod 20 is coaxially installed with a rotating disc, the up and down movement of the arc-shaped pressing piece 21 is driven by rotating the screw rod 20, so that the arc-shaped pressing pieces 21 on the upper and lower sides are clamped on the outside of the water pipe 5, and the annular shell 7 is convenient to disassemble and assemble.

[0030] Through the added outer pressure supporting rod 10, when the water pump is used, the annular shell 7 is first sleeved on the outside of the water pipe 5, so that the outer pressure supporting rod 10 is pressed on the connection between the water pipe 6 and the water pipe 5, so that the outer pressure supporting rod 10 is expanded with the expansion of the water pipe 6 under the cooperation of the spring 16, the stress caused by the pressure change in the water pipe 6 is absorbed, so that the influence on the connection is reduced, the risk of leakage and falling is reduced, and the outer pressure supporting rod 10 can provide additional supporting force to prevent the water pipe 6 from being deformed or displaced excessively under high pressure, maintain the stability and safety of the water pipe 6, and improve the quality of the use of the variable frequency water pump.

[0031] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0032] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A variable frequency water pump, characterized in that, include: A base plate, on the top of which is mounted a variable frequency motor, an impeller pump is mounted on the left end of the variable frequency motor, a variable frequency controller is mounted on the top right side of the variable frequency motor, and water pipes are connected to the middle of the left end and the middle of the upper side of the impeller pump. A water pipe is fitted onto the outside of a water pipe. An annular shell is fitted onto the outside of the water pipe. An inner drive ring is inserted into the inside of the annular shell. A swing arm is circumferentially mounted on the front of the inner drive ring via a bearing. An external pressure support rod is connected to the front of the swing arm. A first through groove is provided on the right side of the inner transmission ring, and a second through groove is provided on the lower side of the inner transmission ring. A plug pin is inserted into the left side of the second through groove. A spring is fitted around the outside of the insertion pin. A T-shaped pin is connected to the bottom of the inner transmission ring. The T-shaped pin passes through the inside of the second through groove. The right end of the spring is connected to the outside of the T-shaped pin.

2. The variable frequency water pump according to claim 1, characterized in that, The number of swing arms and external pressure rods is at least 3 sets, and the external pressure rods are all covered with hard rubber sleeves.

3. The variable frequency water pump according to claim 1, characterized in that, The outer sides of the swing arms are connected to the corresponding positions on the front side of the annular shell via rotating shafts, and a lever is connected to the upper right corner of the outer side of the annular shell.

4. The variable frequency water pump according to claim 1, characterized in that, A grip is connected to the right side of the inner transmission ring. The outer end of the grip passes through the interior of the first through groove, and the outside of the grip is equipped with anti-slip texture.

5. The variable frequency water pump according to claim 1, characterized in that, Mounting plates are connected to the middle positions of the upper and lower sides of the annular shell, and swivel posts are installed on the outside of the mounting plates.

6. The variable frequency water pump according to claim 5, characterized in that, Each of the screw-in columns has a screw screw screwed inside, and the inner end of each screw screw is fitted with an arc-shaped pressure plate via a ball bearing.

7. The variable frequency water pump according to claim 6, characterized in that, The edges of the arc-shaped pressure plates are all rounded, and the outer ends of the screws are all coaxially mounted with turntables.

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