CN115013364A

CN115013364A - Chemical pump for chemical production

Info

Publication number: CN115013364A
Application number: CN202210596493.4A
Authority: CN
Inventors: 周志钢; 李凡凡
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-05-30
Filing date: 2022-05-30
Publication date: 2022-09-06

Abstract

The invention provides a chemical pump for chemical production, which comprises a pump pipe, wherein the front end of the pump pipe is fixedly connected with a suction chamber through a flange structure and a bolt assembly, the tail end of the pump pipe is fixedly connected with a water outlet bent pipe, two sides of the water outlet bent pipe are welded with mounting lug plates, the top end of the water bent pipe is provided with a pump shaft coaxial with the pump pipe and the suction chamber, the pump shaft comprises a transmission shaft, the front end of the transmission shaft extends to the position of the suction chamber, the top end of the transmission shaft is provided with an impeller, and the rear side of the impeller is provided with a guide vane, the chemical pump is characterized in that the front end of the suction chamber is provided with a front end filter screen for guiding impurities, two sides of the front end filter screen are provided with a sewage collecting channel for shunting and communicating the pump pipe to collect the impurities, the water flow movement in the sewage collecting channel is driven by the pressure change caused by the water flow movement in a pump body pipeline, the impurities intercepted from the surface of the front end filter screen are guided and collected in the sewage collecting channel, so that the continuous filtering effect of the front end filter screen is ensured, the operation of the axial flow pump is not adversely affected, and the axial flow pump has a good development prospect.

Description

Chemical pump for chemical production

Technical Field

The invention relates to the field of chemical equipment, in particular to a chemical pump for chemical production.

Background

The axial-flow pump has several kinds of vertical, horizontal, inclined and through-flow pumps, and has the features of submerged pump, good cooling condition, good running balance, stability, less vibration, low noise, capacity of designing underground pump station, improved environmental appearance, integrated pump, saving in time and power, low cost, etc. the axial-flow pump is used widely in various industrial production and water conservancy projects.

However, in the scene of the axial-flow pump used in engineering, because the pumped water contains sundries, aquatic weeds and the like, if the axial-flow pump cannot be cleaned in time after being used for a long time, the water inlet pipe is blocked, and the overall pumping effect is poor.

In order to solve the problem of blockage of the axial flow pump, according to inspection, there is CN202110857028.7 in the prior art, which is an axial flow pump with a blockage prevention function, wherein a filter assembly for filtering impurities is disposed inside a front end connecting pipe of the axial flow pump, and a dirt discharge assembly for discharging impurities is disposed on an outer wall of the connecting pipe, and bristles of the dirt discharge assembly are synchronously driven to operate when a rotating rod rotates, so that the front end filter assembly can be periodically cleaned, and further the filtering effect of the filter assembly is maintained, but the impurities cleaned off are intercepted by a fan-shaped mounting plate to block the flow of a water body so as to change the flow direction of the water body to realize flushing and collecting of the impurities, which will result in loss of the maximum flow of the axial flow pump, and also will affect the normal flow of the water in the pump, thereby causing disorder change of the flow velocity of the water at each position, affecting the stable circulation of the water body, and further affecting the stability of the operation of the axial flow pump, even damage to the axial pump can result over time.

Disclosure of Invention

The invention aims to provide a chemical pump for chemical production.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a chemical pump for chemical production, including the pump line, flange structure and bolt assembly fixedly connected with suction chamber are passed through to the front end of pump line, tail end fixedly connected with goes out the water return bend, the both sides welding of play water return bend has the installation otic placode to go out, the top of water return bend is provided with and the pump line, the coaxial pump shaft of suction chamber, the pump shaft includes the transmission shaft, the front end of transmission shaft extends to the suction chamber position, the impeller is installed on the top, the rear side of impeller is provided with the stator, a serial communication port, the front end of suction chamber is provided with carries out the front end filter screen of water conservancy diversion to impurity, the both sides of front end filter screen are provided with the dirty passageway of collection that reposition of redundant personnel intercommunication pump line was collected impurity.

As a further scheme of the invention: the front end filter screen is the cambered surface filter screen of abnormal shape, wholly is the sunken crooked circular filter screen in both sides perk both sides, and perk one side sets up towards suction chamber inlet side, and the setting of the inlet side of dirty passageway of collection is aimed at to sunken both sides.

As a further scheme of the invention: the impeller is arranged at the position 1-5cm behind the front end of the filter screen along the water inlet direction.

As a further scheme of the invention: the dirty passageway of collection includes two part structures, connects respectively on pump line and suction chamber, forms unified low discharge passageway after being connected through flange and bolt assembly, and the parallel setting is in the both sides of the pipeline that suction chamber and pump line were connected and is formed, and the water inlet and the delivery port of the dirty passageway of collection set up respectively in the front and back side of impeller in the rivers direction, and inside is provided with the passageway filter screen and carries out the filtration of impurity.

As a further scheme of the invention: and a flow velocity sensor is arranged at the water outlet at the tail end of the sewage collecting channel and is used for sensing the flow velocity of water at the water outlet of the sewage collecting channel in real time.

As a further scheme of the invention: the channel filter screen is the filter screen that the slope set up, and both ends contact with the interior outer wall of dirty passageway of collection respectively around.

As a further scheme of the invention: the outer wall side of the sewage collecting channel is hinged with a movable cover plate which is opened in an overturning manner, the channel filter screen is fixed on the inner side of the movable cover plate, the cross section of the channel filter screen is in a protruding triangular shape, the top end of the channel filter screen is abutted to the inner side structure of the sewage collecting channel when the movable cover plate is closed, and the outer side of the movable cover plate is provided with a handle.

As a further scheme of the invention: the channel filter screen and the movable cover plate are fixedly connected through a detachable screw assembly.

As a further scheme of the invention: the position that corresponds with dirty passageway tail end delivery port of collection in the pump line is provided with the compression mouth that leaks hopper-shaped, and the compression mouth welds on the inner wall of pump line, and the tail end diameter is less than the pump line internal diameter, outer wall and the inner wall smooth connection of dirty passageway of collection.

As a further scheme of the invention: the stator sets up the position at compression mouth front end in relative rivers direction, and the blade of stator is the big small footpath structure that corresponds with compression mouth bucket structure.

Advantageous effects

1. The two sides of the front-end filter screen are provided with the sewage collecting channels which are communicated with the pump pipe in a shunting way and used for collecting impurities, when the axial flow pump operates, water flow in the sewage collecting channels is driven by pressure change caused by water flow movement in the pump body pipeline to guide the impurities intercepted from the surface of the front-end filter screen to be collected in the sewage collecting channels on the two sides, so that the continuous filtering effect of the front-end filter screen is ensured, the liquid flow in the main pipeline cannot be influenced, and the operation of the axial flow pump cannot be adversely influenced.

2. The front end filter screen is a special-shaped cambered surface filter screen, the whole filter screen is a bent round filter screen with two raised sides and two sunken sides, the raised side is arranged towards the water inlet side of the suction chamber, the two sunken sides are arranged in alignment with the water inlet side of the sewage collecting channel, the front end filter screen is arranged at the position 1-5cm away from the front end of the impeller along the water inlet direction, through the raised and sunken structure of the front end filter screen, the impurities on the surface can be washed and guided to the sunken side by matching with the flow of the water flow, namely the water inlet of the sewage collecting channel, and the arrangement of the impeller and the relative position of the front end filter screen can utilize the non-axial force applied to the water flow by the rotation of the impeller, the transverse movement of the water flow caused by the centrifugal force brought by the impeller can be used for transversely washing the impurities on the surface of the front end filter screen, the guide effect of the front end filter screen is improved, and the transverse movement of the water flow can improve the flow velocity of the lateral water flow, namely the flow flowing into the sewage collecting channel, the flow guide and impurity collection effects of the sewage collection channel are improved.

3. According to the invention, the position in the pump pipe, which corresponds to the tail end water outlet of the sewage collecting channel, is provided with the funnel-shaped compression nozzle, the compression nozzle is welded on the inner wall of the pump pipe, the diameter of the tail end is smaller than the inner diameter of the pump pipe, the outer wall is smoothly connected with the inner wall of the sewage collecting channel, the flow velocity of water at the compression nozzle can be improved through the arrangement of the tail end compression nozzle of the sewage collecting channel, the tail end pressure of the sewage collecting channel is reduced by utilizing the Venturi effect, the adsorption effect is generated through low pressure, water liquid in the sewage collecting channel is absorbed, the flow velocity in the sewage collecting channel is improved, the flow dividing effect is improved, and the effect of absorbing and cleaning impurities on the surface of a front end filter screen by the front end of the sewage collecting channel is further improved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the position of the sewage collecting channel of the present invention.

Fig. 3 is a sectional view of the overall structure of the present invention.

Fig. 4 is an enlarged view of the structure at a in fig. 3 according to the present invention.

Fig. 5 is a schematic view of a front end screen structure of the present invention.

Fig. 6 is a schematic view of the guide vane structure of the present invention.

Fig. 7 is a schematic view of a channel screen structure of the present invention.

In FIGS. 1-7: 1-pump pipe, 2-suction chamber, 3-water outlet bent pipe, 4-pump shaft, 401-transmission shaft, 402-impeller, 403-guide vane, 5-installation lug plate, 6-front end filter screen, 7-sewage collecting channel, 8-movable cover plate, 9-channel filter screen and 10-compression nozzle.

Detailed Description

The following will clearly and completely describe the specific technical scheme of the invention with reference to fig. 1-7 in the attached drawings of the specification of the invention;

referring to fig. 1-7, fig. 1 is a schematic overall structure diagram of an embodiment of the present invention; FIG. 2 is a schematic view of the position of the dirt collecting channel according to the present invention; FIG. 3 is a cross-sectional view of the overall construction of the present invention; FIG. 4 is an enlarged view of the structure at A of FIG. 3 according to the present invention; FIG. 5 is a schematic diagram of a front end screen configuration of the present invention; FIG. 6 is a schematic view of a vane configuration of the present invention; fig. 7 is a schematic view of a channel screen structure of the present invention.

The chemical pump for chemical production provided by the embodiment comprises a pump pipe 1, wherein the front end of the pump pipe 1 is fixedly connected with a suction chamber 2 through a flange structure and a bolt assembly, the tail end of the pump pipe is fixedly connected with a water outlet bent pipe 3, mounting lug plates 5 are welded on two sides of the water outlet bent pipe 3, a pump shaft 4 coaxial with the pump pipe 1 and the suction chamber 2 is arranged at the top end of the water outlet bent pipe 3, the pump shaft 4 comprises a transmission shaft 401, the front end of the transmission shaft 401 extends to the position of the suction chamber 2, an impeller 401 is arranged at the top end of the transmission shaft 401, and a guide vane 403 is arranged on the rear side of the impeller 402;

when the axial-flow pump operates, the impurity that mixes in the water body can be intercepted by the front end filter screen 6 of 2 front ends of suction chamber, the scouring action of heterotypic structure and rivers of front end filter screen 6 is collected in the dirty passageway 7 of collection by the direction both sides, the washing away of impurity is gone on by the dirty passageway 7 interior rivers motion of collection that the pressure variation that rivers removal brought in the pump body pipeline drove, can not exert an influence to the liquid flow in the trunk line, the continuation of the 6 filter effect of front end filter screen has been guaranteed promptly, can not exert an influence to the function of axial-flow pump yet.

The front-end filter screen 6 is a special-shaped cambered filter screen, the whole filter screen is a bent round filter screen with two raised sides and two sunken sides, the raised side is arranged towards the water inlet side of the suction chamber 2, the two sunken sides are arranged in alignment with the water inlet side of the sewage collecting channel 7, and the front-end filter screen 6 is arranged at the position 1-5cm away from the front end of the impeller 402 along the water inlet direction;

through the perk and the sunk structure of front end filter screen 6, the flow of cooperation rivers can play certain washing away water conservancy diversion effect to the impurity on surface, with impurity direction sunken side, the water inlet department of the dirty passageway 7 of collection promptly, and impeller 402 and the setting of front end filter screen 6 relative position, then can rotate the non-axial force who applys to rivers to impeller 402 and utilize, the rivers lateral shifting that the centrifugal force that utilizes impeller 402 to bring leads to, carry out the lateral flushing to the impurity on front end filter screen 6 surface, improve front end filter screen 6's water conservancy diversion effect, the lateral shifting that simultaneously through rivers improves the velocity of flow that the rivers flow to dirty passageway 7 of collection promptly, improve the water conservancy diversion and the impurity collection effect of dirty passageway 7 of collection.

The sewage collecting channel 7 comprises two parts of structures, the two parts of structures are respectively connected to the pump pipe 1 and the suction chamber 2, a uniform small flow channel is formed after the two parts of structures are connected with a bolt assembly through flanges, the two parts of structures are arranged on two sides of a pipeline formed by connecting the suction chamber 2 and the pump pipe 1 in parallel, a water inlet and a water outlet of the sewage collecting channel 7 are respectively arranged on the front side and the rear side of the impeller 402 in the water flow direction, the outer wall side of the sewage collecting channel 7 is hinged with a movable cover plate 8 which is opened in an overturning manner, a channel filter screen 9 is obliquely fixed on the inner side of the movable cover plate 8 through a detachable screw assembly, the cross section of the channel filter screen 9 is in a raised triangular shape, the top end of the channel filter screen 9 is abutted against the inner side structure of the sewage collecting channel 7 when the movable cover plate 8 is closed, and a handle is arranged on the outer side of the movable cover plate 8;

the slope setting of passageway filter screen 7 makes the filter area increase of passageway filter screen 9, and the flow of cooperation rivers erodees simultaneously, can avoid passageway filter screen 9 to block up completely to influence rivers flow to one of them side along the inclined plane water conservancy diversion with the impurity under filtering, improves the filter effect and the duration of passageway filter screen 9, reduces and maintains clean number of times, and the connection of dismantling through screw subassembly has made things convenient for the cleanness to passageway filter screen 9.

The dirty passageway 9 of collection's tail end delivery port department is provided with the velocity of flow inductor, and the dirty 7 delivery port department rivers velocity of the real-time response collection when the rivers velocity of flow reduces, and impurity piles up too much influence rivers and flows in the dirty passageway 7 of collection promptly, can play the suggestion effect to operating personnel, arranges to collect dirty passageway 7 interior channel filter screen 9 and cleans, guarantees to collect dirty passageway 7 to the clean effect of front end filter screen 6.

Wherein, the position in the pump pipe 1 corresponding to the water outlet at the tail end of the sewage collecting channel 7 is provided with a funnel-shaped compression nozzle 10, the compression nozzle 10 is welded on the inner wall of the pump pipe 1, the diameter of the tail end is smaller than the inner diameter of the pump pipe 1, and the outer wall is smoothly connected with the inner wall of the sewage collecting channel 7;

through the setting of dirty 7 tail end compression mouths 10 of passageway of collection, can improve the velocity of flow of the rivers of compression mouth 10 department, utilize the venturi effect to reduce the dirty 7 tail end pressure of passageway of collection, produce adsorption effect through the low pressure, absorb the dirty passageway 7 interior water liquid of collection, improve the dirty passageway 7 interior velocity of flow of collection, improve the reposition of redundant personnel effect, and then improve the dirty passageway 7 front end of collection and to the clean effect of absorption of front end filter screen 6 surface impurity.

Specifically, the stator 403 sets up the position at the relative rivers orientation compression mouth 10 front end, and the blade of stator 403 is the big or small footpath structure that corresponds with compression mouth 10 bucket column structure, through the setting of the big or small footpath of stator 403, and the rivers change of the compression mouth 10 department of laminating more reduces the influence of stator 403 to the rivers velocity of flow.

In the embodiment of the present invention, the pump shaft 4 is driven by the driving assembly to rotate, and the impeller 402 pumps water axially to drive the water to flow, when the water flows, impurities mixed in the water are guided to the concave side of the front end filter screen 6, i.e. the water inlet of the dirt collecting channel 7, and the water moves laterally in cooperation with the centrifugal force caused by the rotation of the impeller 402 to wash away impurities on the surface of the front end filter screen 6 laterally, so that the impurities enter the dirt collecting channel 7 divided at two sides under the driving of the water flow, and are collected by secondary filtration through the channel filter screen 7 arranged in the dirt collecting channel 7, thereby ensuring smooth water in the main pipe, when the water pumped by the impeller 402 reaches the position 403, the rotating motion of the guide vanes 403 is eliminated by the rotation of the guide vanes, and is changed into axial motion, and enters the compression nozzle 10, and the pressure at the tail end of the dirt collecting channel 7 is increased by the compression effect of the compression nozzle 10, through low pressure production adsorption effect, absorb water liquid in the dirty passageway 7 of collection, improve the dirty passageway 7 interior velocity of flow of collection, improve the reposition of redundant personnel effect, further improve the clean effect of the absorption of dirty passageway 7 front end to 6 surface impurities of front end filter screen, the water liquid of pumping at last is derived from the tail end of play water return bend 3.

When impurity piles up too much influence rivers and flows in the dirty passageway 7 of collection, velocity of flow inductor signals plays the suggestion effect to operating personnel, arranges to collect dirty 7 interior passageway filter screens 9 of passageway and cleans, guarantees to collect dirty passageway 7 to the clean effect of front end filter screen 6.

Claims

1. The utility model provides a chemical pump for chemical production which characterized in that includes:

the pump pipe (1) is responsible for connecting each pipe fitting of the pump body and conveying the pumped water liquid;

the suction chamber (2) is fixedly connected to the front end of the pump pipe (1) through a flange plate and a bolt and is responsible for leading in liquid;

the water outlet elbow (3) is fixedly connected to the tail end of the pump pipe (1) through a flange plate and a bolt to conduct water liquid guiding, a pump shaft (4) used for pumping liquid is arranged at the top of the water outlet elbow, the pump shaft (4) comprises a transmission shaft (401), the front end of the transmission shaft (401) extends to the position of the suction chamber (2), an impeller (402) is installed at the top end of the transmission shaft, and a guide vane (403) is arranged on the rear side of the impeller (402);

the front end filter screen (6) is a special-shaped filter screen arranged at the front end of the suction chamber (2) and is used for intercepting and guiding impurities;

dirty passageway (7) of collection sets up in the both sides of front end filter screen (6), and intercommunication suction chamber (2) and pump line (1) shunt rivers, erode the impurity of front end filter screen (6) interception through the rivers of reposition of redundant personnel and collect.

2. The chemical pump for chemical production according to claim 1, characterized in that: the front end filter screen (6) is a special-shaped cambered surface filter screen, the whole curved circular filter screen with two sides warped and two sides sunken is formed, one side of the warped filter screen is arranged towards the water inlet side of the suction chamber (2), and the two sides sunken to the water inlet side of the dirt collecting channel (7).

3. The chemical pump for chemical production according to claim 2, characterized in that: the impeller (402) is arranged at the position of 1-5cm of the rear end of the front end filter screen (6) along the water inlet direction.

4. The chemical pump for chemical production according to claim 1, characterized in that: dirty passageway (6) of collection includes two part structures, connects respectively on pump line (1) and suction chamber (2), forms unified low discharge passageway after being connected through flange and bolt assembly, and the parallel setting is in suction chamber (2) and the both sides of being connected the pipeline that forms with pump line (1), and the water inlet and the delivery port of dirty passageway (7) of collection set up respectively in the front and back side of impeller (402) in the rivers direction, and inside is provided with passageway filter screen (9) and carries out the filtration of impurity.

5. Chemical pump for chemical production according to claim 4, characterized in that said dirt collecting channel (7) further comprises:

and the flow velocity sensor is arranged at the tail end water outlet of the sewage collecting channel (7) and senses the flow velocity of water at the water outlet of the sewage collecting channel (7) in real time.

6. The chemical pump for chemical production according to claim 4, wherein: the channel filter screen (9) is a filter screen which is obliquely arranged, and the front end and the rear end of the channel filter screen are respectively contacted with the inner wall and the outer wall of the sewage collecting channel (7).

7. The chemical pump for chemical production according to claim 6, characterized in that: the outer wall side of the dirt collecting channel (7) is hinged with a movable cover plate (8) which is opened in a turning mode, a channel filter screen (9) is fixed on the inner side of the movable cover plate (8), the cross section of the channel filter screen (9) is in a protruding triangular shape, the top end of the channel filter screen (9) is abutted to the inner side structure of the dirt collecting channel (7) when the movable cover plate (8) is closed, and a handle is arranged on the outer side of the movable cover plate (8).

8. The chemical pump for chemical production according to claim 7, characterized in that: the channel filter screen (9) is fixedly connected with the movable cover plate (8) through a detachable screw assembly.

9. The chemical pump for chemical production according to claim 1, wherein the pump tube (1) further comprises:

the compression mouth (10), the position that corresponds with dirty passageway (7) tail end delivery port of collection in pump line (1) is provided with the compression mouth (10) that leak hopper-shaped, and compression mouth (10) welding is on the inner wall of pump line (1), and the tail end diameter is less than pump line (1) internal diameter, outer wall and the inner wall smooth connection of dirty passageway (7) of collection.

10. The chemical pump for chemical production according to claim 9, characterized in that: the guide vane (403) is arranged at the front end of the compression nozzle (10) in the direction opposite to the water flow direction, and the blade of the guide vane (403) is of a large-small-diameter structure corresponding to the bucket-shaped structure of the compression nozzle (10).