CN105604959B - Powershift combined agricultural water pump - Google Patents

Abstract

The invention provides a power switching combined agricultural water pump, which includes a motor, a manual drive and an inner-lift screw pump, the motor and the manual drive are connected to a conversion device, the conversion device is connected to the inner-lift screw pump, and the conversion device It is used to switch between the motor and manual drive to select one of them to provide power for the internal lift screw pump; wherein, the conversion device includes a universal coupling, a power transmission shaft and a gear changer, and the gear changer and The motor and the manual drive are switched and connected to drive the power transmission shaft to output power to the internal ascending screw pump through the universal coupling. The power switching combined agricultural water pump can provide power for the inner-rising screw pump by turning on the motor or manually driving according to needs, and the two can be freely switched through the conversion device to meet the power of the inner-rising screw pump in different situations need. The power switching combined agricultural water pump can be widely used in various agricultural drainage and irrigation sites.

Description

Power switch combined agricultural water pump

technical field

The invention relates to the technical field of agricultural water pumps, in particular to a power switching combined agricultural water pump.

Background technique

It is well known that agricultural drainage and irrigation will encounter various complex situations: (1) If a large amount of irrigation and drainage is required for a certain period of time, the traditional method is to use multiple water pumps to work at the same time, which will inevitably cause waste of resources and increase equipment and labor costs; (2) When the terrain of crops is high and the water source is low, multi-stage centrifugal pumps are used for transportation; (3) Flexible transportation is required for changing water in fish ponds to prevent damage to fry; (4) Submersible pumps are used for sludge, impurities, aquatic plants and particles The sundries are sensitive, so a filter needs to be installed outside the pump. After working for a period of time, the aquatic plants and impurities will be adsorbed on the filter due to the suction, which will cause the pump to work inefficiently or stop working. At present, the commonly used agricultural water pumps have various forms such as centrifugal pumps and submersible pumps: the centrifugal pump has a simple structure, a high head, and a relatively small water output. The mechanical efficiency of the pump is about 70%. For farmland with a large amount of sediment Drainage and irrigation water has serious wear and tear of the pump, high power consumption, and great damage to fish fry when draining and irrigating fish pond water; when there is air in the pump casing, the density of air is much smaller than that of liquid, resulting in relatively large Small centrifugal force, so that the pressure difference between the liquid surface and the pump suction port is not enough to press the internal liquid into the pump, that is, the centrifugal pump has no self-priming ability, so that the centrifugal pump cannot deliver liquid ("air binding phenomenon") . Compared with the above-mentioned centrifugal pump, the submersible pump does not have the "air binding phenomenon". The externally mounted submersible pump directly discharges the liquid from the pressurized water chamber behind the impeller or the outlet of the guide vane body, and the motor is also cooled by the pumped liquid. ;The submersible pump works on the liquid, converts mechanical energy into liquid energy, and discharges the water under the action of centrifugal force. The pump has a large flow rate, but the head is very low, the pump efficiency is only 68%, and the energy consumption is relatively large; The solid medium has certain restrictions, and the insulation requirements are relatively high, which cannot meet the high head requirements. From the two kinds of agricultural water pumps introduced above, it can be seen that they have their own advantages and disadvantages, the main problems are low mechanical efficiency (energy saving), poor safety and single use.

The existing patent 200710098031.5 titled "A Spiral Flow Constant Pressure Pump" provides a spiral flow constant pressure pump, which includes a pump casing and an impeller. The inner wall of the pump casing is arc-shaped, and the impeller includes a pump with a The rear cover of the hub part, a plurality of front blades integrated with the rear cover at the front side of the rear cover, and a plurality of auxiliary blades integrated with the rear cover at the rear side of the rear cover, each front blade is close to the rear The round edge of the cover plate is bent counterclockwise and inclined clockwise, forming a bent and inclined part with a certain angle with the front surface of the rear cover plate. The auxiliary blade extends straight to the outer edge of the impeller. When the pump rotates, it bends The outlet centrifugal force at the root of the bent inclined part is greater than that at the front free edge of the bent inclined part, and the liquid flow pressure at the rear root is correspondingly higher than that at the front free edge, and the direction of the liquid flow is from the rear root to the free edge, resulting in longitudinal The flow, as the impeller rotates, generates a rotating flow to form a spiral flow, and then enters the space between the multiple front blades on the impeller, and is pressurized again. It acts like a multi-stage centrifugal pump, thereby obtaining high lift and constant pressure output.

Although the above-mentioned spiral flow constant pressure pump can achieve constant pressure and solid impurity pumping characteristics, its working mode and purpose are single, the efficiency of lifting liquid in the early stage is low, and it cannot meet the requirements for irrigation and drainage of farmland at low speed.

Contents of the invention

The purpose of the present invention is to provide a power switching combined agricultural water pump to solve the problems of the existing agricultural water pumps for drainage and irrigation, single working mode and low efficiency.

The second object of the present invention is to provide a power switching combined agricultural water pump to solve the problem that the existing agricultural water pumps in special occasions such as pumping water in fish ponds have a large damage to fry.

In order to achieve the above object, the present invention provides a power switching combined agricultural water pump, including a motor, a manual drive and an internal lift screw pump, the motor and the manual drive are connected to a conversion device, and the conversion device is connected to the The inner-rising screw pump is connected, and the conversion device is used to switch between the motor and the manual drive to select one of them to provide power for the inner-rising screw pump;

Wherein, the conversion device includes a universal coupling, a power transmission shaft and a gear changer, one end of the universal coupling is connected with the internal lift screw pump, and the other end is connected with the power transmission shaft, The gear changer is switched and connected with the motor and the manual drive to drive the power transmission shaft to output power to the internal ascending screw pump through the universal coupling.

Preferably, the inner-lift screw pump includes a cylindrical pump housing, and a shaftless helical body is arranged inside the pump housing. One end of the shaftless helical body is connected with the conversion device, and the conversion device drives the The shaftless helix rotates relative to the pump casing.

Preferably, the shaftless spiral body includes an inner casing, a helical blade and a hollow flange, the helical blade is located inside the inner casing and the edge of the helical blade is seamlessly connected with the inner wall of the inner casing, so The hollow flange is connected to the water inlet end of the inner casing and is coaxial with the inner casing; the end of the inner lifting screw pump for water outlet is provided with a sealing ring, and the sealing ring is arranged on the between the pump casing and the inner casing.

Preferably, one end of the inner-lift screw pump for water intake is provided with a filter, and the filter is fixed on the pump casing.

Preferably, the two ends of the pump housing are respectively provided with a first bearing and a second bearing, the first bearing has a first outer ring and a first inner ring that can rotate relatively, and the second bearing has a relatively Rotating second outer ring and second inner ring, the first outer ring and second outer ring are fixed on the pump casing, the first inner ring is fixed to the water inlet end of the shaftless spiral body, the second The two inner rings are fixed to the end flanges of the water outlet end arranged on the pump casing, and one end of the shaftless helix at the water outlet passes through the end flanges and is fixedly connected with the end flanges.

Preferably, the conversion device further includes a box, the box is provided with a manual limit slot and a motor limit slot, the inner side of the gear changer is connected with a conversion coupling, the conversion The shaft coupling is connected with the power transmission shaft through a key, and a motor coupling and a sprocket coupling are movably sleeved on both sides of the gear changer on the power transmission shaft. The output end of the motor is connected, and the sprocket coupling is connected with the output end of the manual drive;

When the gear changer is located in the manual limit slot, the sprocket coupling drives the conversion coupling to rotate through the first locking tooth, and when the gear changer is located in the motor When in the limit slot, the motor coupling drives the conversion coupling to rotate through the second locking tooth, wherein, the two sides of the conversion coupling are respectively provided with the first locking tooth and the second locking tooth. The third locking tooth and the fourth locking tooth matched by the two locking teeth.

Preferably, the conversion device further includes a base, the box is fixed on the base, the manual drive includes a bracket fixed on the base, the bracket is provided with a driving handle, and the driving The end of the handle is fixed with an outer sprocket, and the outer sprocket is connected to the sprocket part of the sprocket coupling through a chain. When the driving handle is turned, the driving handle drives the outer sprocket Rotate, thereby drive described sprocket coupling to rotate by chain.

Preferably, the gear changer also includes a handle, and the end of the handle is located outside the box, and is used to cooperate with the manual limit slot and the motor limit slot on the box to switch the gear changer. Connection with motor coupling and sprocket coupling.

Preferably, one end of the universal coupling is connected to the shaftless screw body of the internal ascending screw pump through threads, and the other end is connected to the power transmission shaft through a key,

Preferably, the inner side of the gear changer is connected to the conversion coupling through a third bearing, the outer ring of the third bearing is fixedly fitted with the inner ring of the gear changer, and the conversion coupling The shaft device is fixedly matched with the inner ring of the third bearing.

The power switching combined agricultural water pump provided by the present invention can provide power for the inner-rising screw pump by turning on the motor or manually driving according to the needs, and the two can be freely switched through the conversion device to meet the requirements of the inner-rising screw pump under different circumstances. The power requirement of the pump. The combined agricultural water pump realizes the water delivery of the low-speed inner-lift screw pump, and meets the working requirements of water exchange in fish ponds and dredging of fish ponds and ditches. The power switching combined agricultural water pump can flexibly change the use mode according to the needs of users, and can be widely used in various agricultural irrigation and drainage sites such as agricultural water supply and drainage, fish pond water change, fish pond river ditch dredging, fish pond aeration, etc.

Description of drawings

Figure 1 is a schematic diagram of the overall application of the power switching combined agricultural water pump provided by the present invention;

Fig. 2 is a schematic diagram of the overall structure of the power switching combined agricultural water pump provided by the present invention;

Fig. 3 is a partial structural view of the shaftless spiral body of the power switching combined agricultural water pump provided by the present invention;

Fig. 4 is a partial structural diagram of the driving and conversion device of the power switching combined agricultural water pump provided by the present invention;

Fig. 5 is a partial structural diagram of the conversion device of the power switching combined agricultural water pump provided by the present invention.

detailed description

In order to better illustrate the present invention, the present invention will be described in detail with a preferred embodiment and with accompanying drawings, specifically as follows:

As shown in Figure 1, the power switching combined agricultural water pump provided by this embodiment includes a conversion device 100, a manual drive 200, an internal lift screw pump 300 and a motor 400, and the motor 400 and the manual drive 200 are connected to the conversion device 100. The device 100 is connected to an internal lift screw pump 300 .

As shown in FIG. 2 , the inner-rising screw pump 300 includes a cylindrical pump housing 310 , and one end of the inner-rising screw pump 300 for water intake is provided with a filter 320 , and the filter 320 is fixed on the pump housing 310 . The pump housing 310 is provided with a shaftless helix 330 , one end of the shaftless helix 330 is connected to the conversion device 100 , and the shaftless helix 330 is driven to rotate relative to the pump housing 310 by the conversion device 100 .

As shown in Figures 2 and 3, the shaftless helix 330 includes an inner casing 331, a helical blade 332 and a hollow flange 333, the helical blade 332 is located inside the inner casing 331 and the edge of the helical blade 332 is indistinguishable from the inner wall of the inner casing 331 Seam connection, the hollow flange 333 is connected to the water inlet end of the inner casing 331 and is coaxial with the inner casing 331; the end of the inner lifting screw pump 300 for water outlet is provided with a sealing ring 340, and the sealing ring 340 is arranged on the pump casing 310 and the inner casing 331. Wherein, the edge of the spiral blade 332 in this embodiment is seamlessly welded to the inner wall of the inner casing 331 , and the hollow flange 333 is also fixedly connected to the water inlet end of the inner casing 331 by welding.

The two ends of the pump casing 310 are respectively provided with a first bearing 350 and a second bearing 360. The first bearing 350 has a relatively rotatable first outer ring and a first inner ring, and the second bearing 360 has a relatively rotatable second outer ring. The first inner ring and the second inner ring, the first outer ring and the second outer ring are fixed on the pump casing 310, the first inner ring is fixed to the water inlet end of the shaftless spiral body 330, and the second inner ring is fixed to the water outlet of the pump casing 310. The flange 370 at the end is fixedly connected, and the upper end of the spiral blade 332 passes through the flange 370 and is fixedly connected with it, which can drive the flange 370 to rotate relative to the pump casing 310 .

The conversion device 100 of the present invention is used to switch between the motor 400 and the manual drive 200 to select one of them to provide power for the internal lift screw pump 300 . Specifically, as shown in Figures 3 and 4, the conversion device 100 includes a universal joint 110, a power transmission shaft 120, a gear changer 130, a conversion coupling 140, a box body 150, a motor coupling 160, a chain Wheel coupling 170, base 180. The box body 150 is fixed on the base 180, and the universal coupling 110, the power transmission shaft 120, the gear shifter 130, the conversion coupling 140, the motor coupling 160 and the sprocket coupling 170 are arranged on the box body 150 Inside. Wherein, the box body 150 supports the power transmission shaft 120 through the fourth bearing 153 , so that the power transmission shaft 120 can rotate freely relative to the box body 150 .

Specifically, one end of the universal coupling 110 is connected to the upper end of the screw blade 332 of the internal lift screw pump 300 , and the other end is connected to the power output end of the power transmission shaft 120 . Specifically, the universal coupling is connected with the shaftless screw body of the internal ascending screw pump through threads, and the other end is connected with the power transmission shaft through a key. The gear changer 130 is switched and connected with the motor 400 and the manual drive 200 to drive the power transmission shaft 120 to output power to the internal ascending screw pump 300 through the universal coupling 110 .

The box body 150 is provided with a manual limit groove 151 and a motor limit groove 152. The inner side of the gear changer 130 is connected with the conversion coupling 140, and the conversion coupling 140 is connected with the power transmission shaft 120 through a key, and the power transmission Both sides of the gear changer 130 on the shaft 120 are movable sleeves with the above-mentioned motor coupling 160 and the sprocket coupling 170, the motor coupling 160 is connected with the output end of the motor 400, and the sprocket coupling 170 Connect with the output terminal of manual drive 200 . Specifically, the inner side of the gear changer 130 is connected to the conversion coupling 140 through the third bearing 190, the outer ring of the third bearing 190 is fixedly matched with the inner ring of the gear changer 130, and the conversion coupling 140 is connected to the third The inner ring of the bearing 190 is a fixed fit.

The gear changer 130 also includes a handle 131, the end of the handle 131 passes through the box body 150 and is located outside the box body 150, and cooperates with the manual limit groove 151 and the motor limit groove 152 to switch the gear changer 130 The connection between the motor coupling 160 and the sprocket coupling 170.

The sprocket coupling 170 is provided with a first locking tooth 171, the motor coupling 160 is provided with a second locking tooth 161, and the two sides of the conversion coupling 140 are respectively provided with the first locking tooth 171 and the second locking tooth. The tooth 161 matches the third locking tooth 141 and the fourth locking tooth 142 (not shown in the figure). Among them, in this embodiment, the number of single-side locking teeth of each component is 1. In other preferred embodiments, the number of locking teeth can be set to multiple to reduce the idling distance before the locking teeth are not mated. The present invention does not illustrate Examples are limited.

When the handle 131 is located in the manual limit groove 151, the sprocket coupling 170 drives the conversion coupling 140 to rotate through the first locking tooth 171, and when the handle 131 is located in the motor limit groove 152, the motor coupling 160 The conversion coupling 140 is driven to rotate by the second locking tooth 161 .

The manual drive 200 includes a bracket 210 fixed on the base 180, the bracket 210 is provided with a driving handle 220, the end of the driving handle 220 is fixed with an outer sprocket 230, and the outer sprocket 230 is connected to the sprocket coupling 170 through a chain 240 The upper sprocket part is connected, and when the drive handle 220 is turned, the drive handle 220 drives the outer sprocket 230 to rotate, thereby driving the sprocket coupling 170 to rotate through the chain 240 .

The working process of the combined agricultural water pump is as follows:

(1) Move the gear changer 130 to connect with the motor coupling 160, turn on the motor 400, the motor 400 transmits the power to the conversion coupling 140, and transmits the power to the power transmission shaft 120 through the key connection, and then through the universal coupling The device 110 transmits the power to the shaftless spiral body 330 to drive its rotation, and the liquid flows into the lower end of the shaftless spiral body 330 through the filter screen. When the shaftless spiral body 330 rotates, the liquid rises along the spiral blades and then is output from the output port 380 .

(2) When there is no electricity, move the gear changer 130 to connect with the right end of the sprocket coupling 170, turn the driving handle 220 to transmit the power to the outer sprocket 230, and then transfer the power to the chain under the drive of the chain 240. Wheel coupling 170, so as to transmit the power to the power transmission shaft 120, and then transmit the power to the shaftless helix 330 through the universal coupling 110 to drive its rotation, and the liquid flows into the lower end of the shaftless helix 330 through the filter net, While the shaftless spiral body 330 rotates, the liquid rises along the spiral blade 332 and then is output from the output port 380 .

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any deformation or replacement made by those skilled in the art within the technical scope disclosed in the present invention shall be Should be covered within the protection scope of the present invention. In particular, obvious adaptive changes made on the basis of the core technical solution of the present invention to the dimensions of the various components of the present invention should also be included within the scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (10)

1. A kind of 1. powershift combined agricultural water pump, it is characterised in that including motor, manual actuation and internally lifting helicoidal pump, The motor and the manual actuation are connected with converting means, and the converting means is connected with the internally lifting helicoidal pump, described Converting means is used to switch between the motor and the manual actuation to select one of them as the internally lifting spiral shell Revolve pump and power is provided；

   Wherein, the converting means includes Hooks coupling universal coupling, power transmission shaft and transforming gear device, described Hooks coupling universal coupling one end Be connected with the internally lifting helicoidal pump, the other end is connected with the power transmission shaft, the transforming gear device and the motor and Manual actuation switches over connection, to drive the power transmission shaft to export power to the interior liter by the Hooks coupling universal coupling Formula helicoidal pump.
2. 2. powershift combined agricultural water pump according to claim 1, it is characterised in that the internally lifting helicoidal pump bag The pump case of cylinder is included, shaftless screw body, one end of the shaftless screw body and the converting means phase are provided with the pump case Even, the shaftless screw body is driven to carry out the rotation relative to the pump case by the converting means.
3. 3. powershift combined agricultural water pump according to claim 2, it is characterised in that the shaftless screw body includes Inner housing, helical blade and hollow flange, the helical blade are located at edge and the institute of inner housing inside and helical blade The inwall for stating inner housing is seamlessly connected, and the hollow flange is connected to one end of inner housing water inlet and same with the inner housing Axle；One end that the internally lifting helicoidal pump is used for water outlet is provided with sealing ring, and the sealing ring is located at the pump case and the inner casing Between body.
4. 4. the powershift combined agricultural water pump according to Claims 2 or 3, it is characterised in that the internally lifting spiral One end that pump is used to intake is provided with screen pack, and the screen pack is fixed on the pump case.
5. 5. powershift combined agricultural water pump according to claim 2, it is characterised in that the both ends difference of the pump case Provided with clutch shaft bearing and second bearing, the clutch shaft bearing has relatively turnable first outer ring and the first inner ring, and described Two bearings have relatively turnable second outer ring and the second inner ring, and first outer ring and the second outer ring are fixed on the pump case On, the water inlet end of first inner ring and the shaftless screw body is fixed, the second inner ring and the water side that is arranged on pump case End flange is mutually fixed, the shaftless screw body be located at one end of water side through the end flange and with the end flange It is fixedly connected.
6. 6. powershift combined agricultural water pump according to claim 1, it is characterised in that the converting means also includes One casing, the casing are provided with manual stopper slot and electric machine spacing groove, the inner side of the transforming gear device and a conversion shaft coupling Device is connected, and the conversion shaft coupling is connected by key and the power transmission shaft, transforming gear on the power transmission shaft The both sides of device also movable sleeve is provided with motor coupler and sprocket wheel shaft coupling, and the motor coupler is connected with the output end of motor, The sprocket wheel shaft coupling is connected with the output end of manual actuation；

   When the transforming gear device is located in the manual stopper slot, the sprocket wheel shaft coupling passes through described in the drive of the first latch Conversion shaft coupling is rotated, and when the transforming gear device is located in the electric machine spacing groove, the motor coupler passes through Second latch drives the conversion shaft coupling to be rotated, wherein, the both sides of the conversion shaft coupling are respectively equipped with the 3rd latch And the 4th latch, the 3rd latch coordinate with second latch, the 4th latch coordinates with first latch.
7. 7. powershift combined agricultural water pump according to claim 6, it is characterised in that the converting means also includes One base, the casing are fixed on the base, and the manual actuation includes the support being fixed on the base, the branch Frame is provided with driving handle, and the end of the driving handle is fixed with outer sprocket wheel, and the outer sprocket wheel passes through a chain and the chain The sprocket part connection on shaft coupling is taken turns, when rotating the driving handle, the driving handle drives the exterior chain wheel to rotate, from And rotated by sprocket wheel shaft coupling described in chain-driving.
8. 8. powershift combined agricultural water pump according to claim 6, it is characterised in that the transforming gear device also wraps One handle is included, the handle end is located at outside the casing, for coordinating with manual stopper slot and the electric machine spacing groove on casing To switch the connection between transforming gear device and motor coupler and sprocket wheel shaft coupling.
9. 9. powershift combined agricultural water pump according to claim 2, it is characterised in that described Hooks coupling universal coupling one end Connected by the shaftless screw body phase of screw thread and the internally lifting helicoidal pump, the other end is connected by key with the power transmission shaft.
10. 10. powershift combined agricultural water pump according to claim 6, it is characterised in that the transforming gear device Inner side is connected by 3rd bearing with the conversion shaft coupling, the outer ring of the 3rd bearing and the inner ring of the transforming gear device The inner ring secure fit of secure fit, the conversion shaft coupling and 3rd bearing.