CN219262668U - Electric heating asphalt pump - Google Patents
Electric heating asphalt pump Download PDFInfo
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- CN219262668U CN219262668U CN202223355515.2U CN202223355515U CN219262668U CN 219262668 U CN219262668 U CN 219262668U CN 202223355515 U CN202223355515 U CN 202223355515U CN 219262668 U CN219262668 U CN 219262668U
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Abstract
The utility model provides an electric heating asphalt pump, and belongs to the technical field of asphalt pumps. The three-screw pump solves the problems that when the temperature is reduced, the asphalt is hardened and the conveying efficiency is affected when the existing three-screw pump is used as an asphalt conveying pump. The utility model comprises a pump body and a screw rod assembly, wherein a conveying cavity is arranged in the pump body, the screw rod assembly is rotatably arranged in the conveying cavity, an electric heating assembly is further arranged on the pump body, the electric heating assembly comprises heating rods, and a plurality of heating rods are arranged in the conveying cavity and used for heating materials in the conveying cavity; the pump body is also internally provided with an oil guide cavity which is independent relative to the conveying cavity. The utility model has the advantages that the heating rod heats from inside to outside, and meanwhile, the hot oil flowing in the oil guide cavity heats the pump body, so that asphalt can be melted in the shortest time, and the conveying requirement is met.
Description
Technical Field
The utility model belongs to the technical field of asphalt pumps, and relates to an electric heating asphalt pump.
Background
The asphalt pump mainly has the structural forms of a three-screw pump, a piston pump, a gear pump and the like.
The three-screw pump is a positive displacement pump and has the remarkable advantages of simple structure, small volume, high rotation speed, stability, reliability, small pressure pulsation, stable flow, low noise, high efficiency and the like. The three-screw pump utilizes the principle of screw meshing, and by means of the mutual meshing of rotating screws in the pump sleeve, the conveyed materials are sucked into and sealed in the meshing cavity, and the materials are pushed to the discharge port at a uniform speed along the axial direction of the screws and form stable pressure at the discharge port.
The three-screw pump is used as a delivery pump for asphalt, heavy fuel oil, heavy gear oil and heavy diesel oil, and asphalt is a high-viscosity medium, and when the temperature is reduced, the asphalt is hardened, so that the delivery efficiency is affected.
The existing screw is generally arranged on a pump sleeve in a rotating way through a bearing bush, the bearing bush is a contact part of a sliding bearing and a shaft neck, and a very thin oil film is required to be used for lubricating between the bearing bush and a rotating shaft when the sliding bearing works. If lubrication is poor, direct friction exists between the bearing bush and the rotating shaft, the friction can generate high temperature, and the bearing bush is made of special high-temperature resistant alloy materials, but the high temperature generated by the direct friction is still enough to burn the bearing bush out. The bearing bush can be burned due to the factors of overlarge load, overhigh temperature, impurity of lubricating oil, abnormal viscosity and the like. The sliding bearing is damaged after the bush is burned. The existing three-screw pump has the problems that screw bolts are blocked, abnormal noise exists in screw engagement, and the like.
Disclosure of Invention
The utility model aims to solve the problems of the prior asphalt pump and provides an asphalt pump which is used for heating and heat preservation of the asphalt pump and is convenient for conveying by melting asphalt.
The aim of the utility model can be achieved by the following technical scheme:
the electric heating asphalt pump comprises a pump body and a screw assembly, wherein the screw assembly comprises a main screw and two driven screws meshed with the main screw, a conveying cavity is formed in the pump body, and two ends of the main screw and two ends of the driven screws are respectively arranged in the conveying cavity in a rotating mode through rolling bearings; an oil guiding cavity which is independent of the conveying cavity is further arranged in the pump body, and the oil guiding cavity is located at the periphery of the conveying cavity.
In the above-mentioned electric heating asphalt pump, the electric heating assembly further comprises a heating ring, a sealing gland is arranged at the end of the pump body, and the heating ring is sleeved on the periphery of the sealing gland.
In the electric heating asphalt pump, a pump sleeve is fixedly arranged in the conveying cavity, the screw rod assembly is rotatably arranged in the inner cavity of the pump sleeve, the conveying cavity is divided into an inner conveying cavity and an outer conveying cavity by the pump sleeve, and the inner conveying cavity is communicated with the outer conveying cavity; the pump sleeve periphery is equipped with an annular shrouding, and this shrouding separates into outer feed chamber and outer material chamber with outer transport chamber, open oil inlet and oil-out on the pump body, feed inlet and discharge gate respectively with outer feed chamber and outer material chamber intercommunication, feed inlet, outer feed chamber, interior transport chamber, outer discharge chamber, discharge gate circulate in proper order and form the material conveying passageway.
In the above-mentioned electrically heated asphalt pump, the screw assembly is disposed in the outer feed chamber and the screw assembly is disposed in the inner delivery chamber.
In the electric heating asphalt pump, the pump body is also provided with an oil inlet and an oil outlet which are respectively communicated with the oil guide cavity.
In the electric heating asphalt pump, the four groups of heating rods are uniformly distributed in the outer feeding cavity at intervals along the circumferential direction of the pump body.
In the above-mentioned electrically heated asphalt pump, the asphalt pump further comprises a rear cover, the sealing gland is arranged on the front end face of the pump body, and the rear cover is arranged on the rear end face of the pump body; the heating rod sequentially passes through the rear cover and the pump cover to enter the outer feeding cavity.
In the electric heating asphalt pump, the side face of the sealing plate facing the outer feeding cavity is provided with a plurality of positioning grooves, and the end parts of the heating rods are embedded in the positioning grooves.
Compared with the prior art, the utility model has the advantages that the heating rod is arranged in the outer feeding cavity, the heating ring is arranged on the sealing pressing cover, the compensation heating of the mechanical sealing part is carried out by the heating rod through the heating from inside to outside, and meanwhile, the pump body is heated by the hot oil flowing through the oil guiding cavity, so that the asphalt can be melted in the shortest time, and the conveying requirement is met. The screw assembly is rotationally arranged in the pump sleeve through the rolling bearing, so that the problems that the screw is blocked, abnormal noise exists in the screw engagement and the like are solved. The electric heating system has the characteristics of simple structure, convenient use, easy maintenance, safety, reliability and the like.
Drawings
FIG. 1 is a schematic general construction of the present utility model;
FIG. 2 is a cross-sectional view of the present utility model;
FIG. 3 is a schematic view of the installation of a heater rod of the present utility model;
fig. 4 is a partial cross-sectional view of the housing of the present utility model.
In the figure, 1, a pump body; 2. a screw assembly; 3. a heating rod; 4. a heating ring; 5. a sealing gland; 6. a rear cover; 7. an oil guiding cavity; 8. a pump sleeve; 9. an inner delivery lumen; 10. a sealing plate; 11. an outer feed chamber; 12. an outer discharge cavity; 13. a feed inlet; 14. a discharge port; 15. an oil inlet; 16. an oil outlet; 17. and positioning grooves.
Detailed Description
The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.
As shown in fig. 1 and 2, the electric heating asphalt pump comprises a pump body 1 and a screw assembly 2, wherein the screw assembly 2 comprises a main screw and two driven screws meshed with the main screw, a conveying cavity is arranged in the pump body 1, two ends of the main screw and the driven screws are respectively arranged in the conveying cavity in a rotating way through rolling bearings, the pump body 1 is also provided with an electric heating assembly, the electric heating assembly comprises heating rods 3, and a plurality of heating rods 3 are arranged in the conveying cavity and used for heating materials in the conveying cavity; an oil guiding cavity 7 independent of the conveying cavity is further arranged in the pump body 1, and the oil guiding cavity 7 is located at the periphery of the conveying cavity. The electric heating assembly further comprises a heating ring 4, a sealing gland 5 is arranged at the end part of the pump body 1, and the heating ring 4 is sleeved on the periphery of the sealing gland 5.
The conveying cavity is also fixedly provided with a pump sleeve 8, the screw assembly 2 is rotatably arranged in the inner cavity of the pump sleeve 8, the pump sleeve 8 divides the conveying cavity into an inner conveying cavity 9 and an outer conveying cavity, and the inner conveying cavity 9 is communicated with the outer conveying cavity; the periphery of the pump sleeve 8 is provided with an annular sealing plate 10, the outer conveying cavity is divided into an outer feeding cavity 11 and an outer discharging cavity 12 by the sealing plate 10, an oil inlet 15 and an oil outlet 16 are formed in the pump body 1, the feeding port 13 and the discharging port 14 are respectively communicated with the outer feeding cavity 11 and the outer discharging cavity 12, and the feeding port 13, the outer feeding cavity 11, the inner conveying cavity 9, the outer discharging cavity 12 and the discharging port 14 are sequentially communicated to form a material conveying channel. The screw assembly 2 is arranged in the outer feed cavity 11, and the screw assembly 2 is arranged in the inner conveying cavity 9. The four groups of heating rods 3 are distributed in the outer feeding cavity 11 at uniform intervals along the circumferential direction of the pump body 1.
As shown in fig. 3, the asphalt pump further comprises a rear cover 6, the sealing gland 5 is arranged on the front end surface of the pump body 1, and the rear cover 6 is arranged on the rear end surface of the pump body 1; the heating rod 3 sequentially passes through the rear cover 6 and the pump cover to enter the outer feeding cavity 11. The side face of the sealing plate 10 facing the outer feeding cavity 11 is provided with a plurality of positioning grooves 17, and the end parts of the heating rods 3 are embedded in the positioning grooves 17.
As shown in fig. 4, an oil guiding cavity 7 independent of the conveying cavity is further arranged in the pump body 1, and the oil guiding cavity 7 is located at the periphery of the conveying cavity. An oil inlet 15 and an oil outlet 16 are also formed in the pump body 1, and the oil inlet 15 and the oil outlet 16 are respectively communicated with the oil guide cavity 7.
It should be understood that in the claims, the specification of the present utility model, all "including … …" should be interpreted as open-ended meaning that it is equivalent to "at least … …", and not as closed-ended meaning that it should not be interpreted to "include … …" only.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.
Claims (7)
1. The utility model provides an electric heating pitch pump, includes pump body (1), screw rod subassembly (2) include a main screw rod and with two driven screw rods of main screw rod meshing, be equipped with a transport chamber in pump body (1), main screw rod and driven screw rod's both ends are rotated through antifriction bearing respectively and are set up in this transport chamber, its characterized in that, still be equipped with electric heating subassembly on pump body (1), this electric heating subassembly includes heating rod (3), and a plurality of heating rod (3) set up and are used for heating the material of carrying the intracavity in above-mentioned transport chamber; an oil guide cavity (7) independent of the conveying cavity is further arranged in the pump body (1), and the oil guide cavity (7) is located at the periphery of the conveying cavity.
2. An electrically heated asphalt pump according to claim 1, wherein a pump sleeve (8) is fixedly arranged in the conveying cavity, the screw assembly (2) is rotatably arranged in the inner cavity of the pump sleeve (8), the pump sleeve (8) divides the conveying cavity into an inner conveying cavity (9) and an outer conveying cavity, and the inner conveying cavity (9) is communicated with the outer conveying cavity; the pump sleeve (8) periphery is equipped with an annular shrouding (10), and outer feed chamber (11) and outer play material chamber (12) are separated into with outer transport chamber to this shrouding (10), open on the pump body (1) has oil inlet (15) and oil-out (16), feed inlet (13) and discharge gate (14) respectively with outer feed chamber (11) and outer play material chamber (12) intercommunication, feed inlet (13), outer feed chamber (11), interior transport chamber (9), outer play material chamber (12), discharge gate (14) circulate in proper order and form material conveying channel.
3. An electrically heated bitumen pump as claimed in claim 2, wherein the screw assembly (2) is arranged in the outer feed chamber (11) and the screw assembly (2) is arranged in the inner transport chamber (9).
4. An electrically heated asphalt pump according to claim 1, characterized in that the pump body (1) is further provided with an oil inlet (15) and an oil outlet (16), and the oil inlet (15) and the oil outlet (16) are respectively communicated with the oil guiding cavity (7).
5. An electrically heated bitumen pump as claimed in claim 2, wherein the heating rods (3) are four groups of heating rods (3) which are evenly spaced circumferentially around the pump body (1) in the outer feed chamber (11).
6. An electrically heated bitumen pump as claimed in claim 2, wherein the bitumen pump further comprises a rear cover (6), the rear cover (6) being provided on a rear end face of the pump body (1); the heating rod (3) sequentially passes through the rear cover (6) and the pump cover to enter the outer feeding cavity (11).
7. An electrically heated bitumen pump as claimed in claim 2, wherein the side of the sealing plate (10) facing the outer feed chamber (11) is provided with a plurality of locating grooves (17), and the ends of the heating rods (3) are embedded in the locating grooves (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223355515.2U CN219262668U (en) | 2022-12-13 | 2022-12-13 | Electric heating asphalt pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223355515.2U CN219262668U (en) | 2022-12-13 | 2022-12-13 | Electric heating asphalt pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219262668U true CN219262668U (en) | 2023-06-27 |
Family
ID=86870899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223355515.2U Active CN219262668U (en) | 2022-12-13 | 2022-12-13 | Electric heating asphalt pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219262668U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117028242A (en) * | 2023-10-09 | 2023-11-10 | 山东鼎点环保科技有限公司 | Screw energy-saving pump |
-
2022
- 2022-12-13 CN CN202223355515.2U patent/CN219262668U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117028242A (en) * | 2023-10-09 | 2023-11-10 | 山东鼎点环保科技有限公司 | Screw energy-saving pump |
| CN117028242B (en) * | 2023-10-09 | 2023-12-08 | 山东鼎点环保科技有限公司 | Screw energy-saving pump |
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