CN216895096U

CN216895096U - Semi-open centrifugal pump with pump cavity cleaning function

Info

Publication number: CN216895096U
Application number: CN202220602699.9U
Authority: CN
Inventors: 李文龙; 张珊珊
Original assignee: Tianjin Luhua Hongjin New Material Technology Co ltd
Current assignee: Tianjin Luhua Hongjin New Material Technology Co ltd
Priority date: 2022-03-19
Filing date: 2022-03-19
Publication date: 2022-07-05
Anticipated expiration: 2032-03-19

Abstract

The utility model is suitable for the technical field of hydrogenated petroleum resin processing, and provides a semi-open centrifugal pump with a pump cavity cleaning function, which comprises a centrifugal pump body, wherein the centrifugal pump body comprises a driving motor and a shell which is arranged on the driving motor and is of a column structure, a pump cavity is formed in the shell, the front surface of the shell is fixedly connected with a liquid inlet pipe communicated with the inside of the pump cavity, and the top of the shell is fixedly connected with a liquid outlet pipe communicated with the inside of the pump cavity; an impeller is arranged in the pump cavity and comprises a circular plate which is positioned on the same central axis with the shell. According to the utility model, through the arrangement of the disturbance piece, when the centrifugal pump body works, a solvent can enter the shell through the liquid inlet pipe, the circular plate can rotate, and the disturbance piece can rotate synchronously with the arc-shaped blade along with the rotation of the circular plate, so that residual catalyst on the inner wall of the pump cavity can be scraped, and the problem that the catalyst is deposited in the pump cavity is avoided.

Description

Semi-open centrifugal pump with pump cavity cleaning function

Technical Field

The utility model belongs to the technical field of hydrogenated petroleum resin processing, and particularly relates to a semi-open centrifugal pump with a pump cavity cleaning function.

Background

The thermal stability is an important index for determining the quality of hydrogenated petroleum resin, the higher the hydrogenation degree is, the better the thermal stability of the resin is, the ejector is an important component in the loop hydrogenation process, in the gas-liquid-solid three-phase reaction of resin liquid, hydrogen and catalyst, the high-speed flowing phase is used for absorbing other phases to ensure that all the phases are in intimate contact, then the phases are uniformly dispersed or suspended in the reactor and complete the reaction, the higher the pressure difference between the front end and the rear end of the ejector is, the better the mixing effect is, the more sufficient the reaction is, the pressure difference between the front end and the rear end of the ejector is caused by a vacuum area formed on the back side of the outlet of the ejector after the high-speed flowing mixed phase flows through the ejector, and the high flow rate of the mixed phase is a precondition for normal operation, therefore, the circulation amount of a circulation pump in the hydrogenation loop is an important influence factor for influencing the loop hydrogenation degree.

Because the loop hydrogenation reaction is a three-phase reaction, after the loop hydrogenation reaction is operated for a long time, the deposition of a catalyst is easily formed in a pump cavity of a circulating pump, the flow rate of the circulating pump is influenced, the hydrogenation degree of resin is further influenced, and the quality of the produced and processed hydrogenated petroleum resin is influenced, so that the design of the semi-open centrifugal pump with the pump cavity cleaning function is necessary to solve the problem.

SUMMERY OF THE UTILITY MODEL

The utility model provides a semi-open centrifugal pump with a pump cavity cleaning function, and aims to solve the problems in the background technology.

The utility model is realized in this way, the semi-open centrifugal pump with pump cavity cleaning function, including the centrifugal pump body, the said centrifugal pump body includes the driving motor and installs the shell in column type structure on the driving motor, and there is pump cavity in the said shell, the front of the said shell connects with the liquid inlet pipe that is linked with the pump cavity inside fixedly, the top of the said shell connects with the drain pipe that is linked with the pump cavity inside fixedly; the utility model discloses a pump, including casing, driving motor, circular slab, drive motor, impeller, drive motor, circular slab, drive motor, be provided with the impeller in the pump chamber, the impeller includes the circular slab that is located same the central axis with the casing, just drive motor's output shaft runs through the casing and is fixed mutually with one side of circular slab, one side fixedly connected with that the driving motor was kept away from to the circular slab is a plurality of arc blades that are equidistant annular array and distribute, one side that drive motor was kept away from to the circular slab is a plurality of disturbing pieces that are equidistant annular array and distribute that still fixedly connected with, disturbing piece is L type structure and contacts with the inner wall of pump chamber.

Preferably, the number of the disturbance pieces is half of that of the arc-shaped blades, and two arc-shaped blades are arranged between every two adjacent disturbance pieces at intervals, so that the problem that the disturbance pieces are too large in number to contact with liquid flow to cause influence can be avoided.

Preferably, the bottom of casing is seted up the outage that is linked together with the pump chamber is inside, the bottom fixedly connected with of casing is vertical axial and is linked together and the internal diameter is greater than the fluid-discharge tube of outage internal diameter with the outage is inside, peg graft threaded rod through screw-thread fit in the fluid-discharge tube, the bottom fixedly connected with handle of threaded rod, the top fixedly connected with of threaded rod is located the fluid-discharge tube and contradicts in the casing bottom and be used for blockking up the silica gel seal block of outage, holds the handle with the hand and rotates and can make the threaded rod take out from the fluid-discharge tube through the cooperation of screw thread, and the silica gel seal block can separate bottom the casing this moment to make the remaining catalyst in pump chamber bottom can get into in the fluid-discharge tube through the outage and outwards discharge.

Preferably, the both sides of casing all are fixed to be pegged graft and are had hollow block, two one side that hollow block is close to each other all is provided with one row of nozzle that is located the pump intracavity and can carry out the hydrojet to the pump intracavity, carries out the hydrojet through the nozzle to form through the rotation of impeller and erode the pump intracavity, reach the abluent effect to pump intracavity portion.

Preferably, the two hollow blocks are communicated with a hose for transfusion inside the hollow blocks, and one side of the hose, which is far away from the hollow blocks, is connected with a faucet so as to realize transfusion in the hollow blocks.

Preferably, all install the solenoid valve in feed liquor pipe and the drain pipe to can seal feed liquor pipe and drain pipe when washing the pump chamber, avoid the liquid can outwards flow through feed liquor pipe and drain pipe.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, through the arrangement of the disturbance piece, when the centrifugal pump body works, a solvent can enter the shell through the liquid inlet pipe, at the moment, the circular plate can rotate, and the disturbance piece can rotate synchronously with the arc-shaped blade along with the rotation of the circular plate, so that residual catalyst on the inner wall of the pump cavity can be scraped, and the problem that the catalyst is deposited in the pump cavity is avoided.

2. The utility model sets the disturbing sheet into L-shaped structure, the contact area of the disturbing sheet and the liquid flow is small when the disturbing sheet rotates, and the disturbing sheet has little influence on the flow direction of the liquid flow, so the problems that the normal conveying of the liquid by the impeller in the pump cavity is influenced and the conveying speed of the catalyst is reduced can not occur.

3. The utility model can spray liquid in the pump cavity under the action of the nozzle, and wash the pump cavity through the rotation of the impeller, so as to achieve the effect of cleaning the inside of the pump cavity, and then discharge the cleaned waste liquid from the liquid discharge pipe.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a partial cross-sectional view of FIG. 1;

FIG. 4 is a schematic cross-sectional view taken along line B-B of FIG. 2;

FIG. 5 is a schematic view of the impeller structure of the present invention;

in the figure: 1. a centrifugal pump body; 2. a housing; 3. a liquid inlet pipe; 4. a liquid outlet pipe; 5. an arc-shaped blade; 51. a circular plate; 6. a disturbance plate; 7. a liquid discharge pipe; 8. a threaded rod; 9. a silica gel sealing block; 10. a handle; 11. a drain hole; 12. a hollow block; 13. a nozzle; 14. a hose.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Referring to fig. 1-5, the present invention provides a semi-open centrifugal pump with a pump chamber cleaning function: the centrifugal pump comprises a centrifugal pump body 1, wherein the centrifugal pump body 1 comprises a driving motor and a shell 2 which is arranged on the driving motor and is of a column structure, a pump cavity is formed in the shell 2, a liquid inlet pipe 3 communicated with the inside of the pump cavity is fixedly connected to the front side of the shell 2, and a liquid outlet pipe 4 communicated with the inside of the pump cavity is fixedly connected to the top of the shell 2; the impeller is arranged in the pump cavity and comprises a circular plate 51 which is positioned on the same central axis with the shell 2, an output shaft of the driving motor penetrates through the shell 2 and is fixed with one side of the circular plate 51, one side, far away from the driving motor, of the circular plate 51 is fixedly connected with a plurality of arc-shaped blades 5 which are distributed in an equidistant annular array, one side, far away from the driving motor, of the circular plate 51 is also fixedly connected with a plurality of disturbance pieces 6 which are distributed in an equidistant annular array, and the disturbance pieces 6 are L-shaped structures and are contacted with the inner wall of the pump cavity, through the design, when the centrifugal pump body 1 works, a solvent can enter the shell 2 through the liquid inlet pipe 3, at the moment, the circular plate 51 can rotate, the disturbance pieces 6 can rotate along with the rotation of the circular plate 51 and synchronously rotate with the arc-shaped blades 5, so that residual catalyst on the inner wall of the pump cavity can be scraped, and the problem that the catalyst is deposited inside the pump cavity is avoided, and because the disturbance piece 6 is of an L-shaped structure, the contact area of the disturbance piece and the solvent flow is small when the disturbance piece rotates, and the influence on the flow direction of the solvent flow is little, so that the problems that the normal conveying of liquid by the impeller in the pump cavity is influenced and the conveying speed of the catalyst is reduced can not occur.

Referring to fig. 5, the number of the disturbance plates 6 is half of the number of the arc-shaped blades 5, and two arc-shaped blades 5 are spaced between every two adjacent disturbance plates 6, so that a small number of disturbance plates 6 can achieve the effect of cleaning the residual catalyst on the inner wall of the pump cavity, and the problem of influence caused by contact between the disturbance plates 6 and the liquid flow due to too many arrangement numbers of the disturbance plates can be avoided.

In addition, after the centrifugal pump body 1 stops working, a certain amount of residual catalyst is left at the bottom of the pump cavity, in order to solve the problems, a liquid discharge hole 11 communicated with the inside of the pump cavity is formed at the bottom of the shell 2, a liquid discharge pipe 7 which is in a vertical axial direction and communicated with the inside of the liquid discharge hole 11 and has an inner diameter larger than the inner diameter of the liquid discharge hole 11 is fixedly connected to the bottom of the shell 2, a threaded rod 8 is inserted into the liquid discharge pipe 7 in a threaded fit manner, a handle 10 is fixedly connected to the bottom of the threaded rod 8, a silica gel sealing block 9 which is positioned in the liquid discharge pipe 7 and abutted against the bottom of the shell 2 and used for blocking the liquid discharge hole 11 is fixedly connected to the top of the threaded rod 8, the threaded rod 8 can be taken out of the liquid discharge pipe 7 through the cooperation of the threads by holding the handle 10 with a hand and rotating, at the time, the silica gel sealing block 9 can be separated from the bottom of the shell 2, and the residual catalyst at the bottom of the pump cavity can enter the liquid discharge pipe 7 through the liquid discharge hole 11 and be discharged outwards, the problem of catalyst residue in the pump cavity is avoided.

Preferably, the hollow blocks 12 are fixedly inserted into two sides of the casing 2, one side of each hollow block 12 close to each other is provided with a row of nozzles 13 which are located in the pump cavity and can spray liquid into the pump cavity, so that after the catalyst is conveyed in the pump cavity, the liquid can be sprayed into the pump cavity through the nozzles 13, the pump cavity is flushed through the rotation of the impeller, the effect of cleaning the inside of the pump cavity is achieved, and then the cleaned waste liquid is discharged from the liquid discharge pipe 7.

Meanwhile, the sides of the two hollow blocks 12 far away from each other are communicated with a hose 14 for transfusion inside the hollow blocks, and the side of the hose 14 far away from the hollow blocks 12 is connected with a water tap so as to realize transfusion in the hollow blocks 12, and liquid can be sprayed into the pump cavity through the nozzle 13.

In some embodiments, all install the solenoid valve in feed liquor pipe 3 and the drain pipe 4 to can seal feed liquor pipe 3 and drain pipe 4 when washing the pump chamber, avoid the liquid can outwards flow through feed liquor pipe 3 and drain pipe 4, such design can be more reasonable.

In the device, all electric devices and drivers matched with the electric devices are arranged, and all driving parts, namely power elements, the electric devices and adaptive power supplies, are connected through leads by a person skilled in the art, and specific connecting means refer to the above expression that the electric devices are electrically connected in sequence, and detailed connecting means thereof are well known in the art.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. From semi-open centrifugal pump of taking pump chamber clearance function, its characterized in that: the centrifugal pump comprises a centrifugal pump body (1), wherein the centrifugal pump body (1) comprises a driving motor and a shell (2) which is arranged on the driving motor and is of a column structure, a pump cavity is formed in the shell (2), a liquid inlet pipe (3) communicated with the inside of the pump cavity is fixedly connected to the front side of the shell (2), and a liquid outlet pipe (4) communicated with the inside of the pump cavity is fixedly connected to the top of the shell (2);

the utility model discloses a pump, including casing (2), be provided with the impeller in the pump chamber, the impeller includes circular slab (51) that is located same central axis with casing (2), just driving motor's output shaft runs through casing (2) and is fixed mutually with one side of circular slab (51), one side fixedly connected with a plurality of arc blade (5) that are equidistant annular array and distribute are kept away from driving motor in circular slab (51), one side that driving motor was kept away from in circular slab (51) still fixedly connected with a plurality of disturbance pieces (6) that are equidistant annular array and distribute, disturbance piece (6) are L type structure and contact with the inner wall of pump chamber.

2. The semi-open centrifugal pump with pump chamber cleaning function of claim 1, wherein: the number of the disturbance pieces (6) is half of that of the arc-shaped blades (5), and every two adjacent disturbance pieces (6) are provided with two arc-shaped blades (5) at intervals.

3. The semi-open centrifugal pump with pump chamber cleaning function of claim 1, wherein: the utility model discloses a drainage tube, including casing (2), pump chamber, threaded rod (8), bottom fixedly connected with of casing (2) is vertical axial and is linked together and the internal diameter is greater than fluid-discharge tube (7) of fluid-discharge hole (11) internal diameter with fluid-discharge hole (11) inside, threaded rod (8) are pegged graft through screw-thread fit in fluid-discharge tube (7), the bottom fixedly connected with handle (10) of threaded rod (8), the top fixedly connected with of threaded rod (8) is located fluid-discharge tube (7) and contradicts in casing (2) bottom and is used for blockking up silica gel seal block (9) of fluid-discharge hole (11).

4. The semi-open centrifugal pump with pump chamber cleaning function of claim 1, wherein: the two sides of the shell (2) are fixedly inserted with hollow blocks (12), and one side of each hollow block (12) close to each other is provided with a row of nozzles (13) which are positioned in the pump cavity and can spray liquid into the pump cavity.

5. The semi-open centrifugal pump with pump chamber cleaning function of claim 4, wherein: and the sides of the two hollow blocks (12) far away from each other are communicated with a hose (14) for transfusion in the hollow blocks.

6. The semi-open centrifugal pump with pump chamber cleaning function of claim 1, wherein: the liquid inlet pipe (3) and the liquid outlet pipe (4) are internally provided with electromagnetic valves.