Net paste preparing and stirring device with underneath motor

Abstract

The utility model discloses a neat paste preparing and stirring device with an underlying motor, and relates to the technical field of neat paste stirring devices. Comprising a stirring barrel, a barrel cover, a stirring shaft, stirring blades, an upper sealing cover, a lower sealing cover, a connecting flange and a stirring motor, a slurry outlet is formed in the bottom of the stirring barrel, the barrel cover is connected to the top of the stirring barrel, the upper sealing cover is connected to the bottom of the stirring barrel, the lower sealing cover is connected to the bottom of the upper sealing cover, the stirring motor is connected with the lower sealing cover through a connecting flange and fixedly connected with one end of the stirring shaft, and the other end of the stirring shaft is connected with the stirring blades. The stirring shaft is rotationally connected with the upper sealing cover and the lower sealing cover, and mechanical seals are arranged between the stirring shaft and the upper sealing cover and between the stirring shaft and the lower sealing cover. The stirring motor is arranged below the stirring barrel, so that the height of the whole device is reduced, materials can be conveniently added into the stirring barrel, meanwhile, the mechanical seal is arranged on the stirring shaft, the sealing effect is good, and slurry is prevented from infiltrating and locking the stirring shaft.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of net paste stirring device, concretely refers to a net paste pulping stirring device of motor under -placement. BACKGROUND

[0002] Prestressed concrete cylinder pipe (PCCP) is widely used in China's South-to-North Water Diversion and other major water diversion water conservancy construction projects and urban water supply pipe network construction projects due to its large diameter, high pressure, deep soil cover and long distance. The durability of the prestressed high-strength steel wire wrapped on the PCCP pipe core directly affects the structural safety of the PCCP. The GB / T19685 "Prestressed Concrete Cylinder Pipe" national standard requires that when winding the wire, the cement paste with a specified water-cement ratio should be sprayed to provide the first effective protection for the surface of the steel wire. The water-cement ratio of the cement paste is 0.625, which has strong viscosity and fast solidification speed. The mixed paste will start to set and produce sludge after 45 minutes. If not cleaned in time and thoroughly, it will solidify on the inner wall of the stirring barrel or the slurry pipeline. The cement paste is generally made on site using a stirring device. The general stirring equipment on the market adopts an upper motor mode, which has a high overall height and makes it difficult to add materials to the stirring barrel because the feeding equipment will interfere with the stirring motor in space. In addition, the sealing element between the existing stirring shaft and the stirring barrel adopts a general sealing structure, such as O-ring sealing and skeleton shaft sealing, which has a short service life and poor corrosion resistance and wear resistance in the water paste application environment. SUMMARY

[0003] The utility model solves the technical problem to provide a net paste pulping stirring device of motor under -placement, set up the stirring motor in the lower of stirring barrel, both reduce the height of whole device, and make it convenient for to add material to the stirring barrel, set up mechanical seal on the stirring shaft simultaneously, sealing effect is good, avoid the paste to infiltrate and seize the stirring shaft, prolong the service life of sealing element, bearing and motor.

[0004] To solve the above technical problems, the utility model adopts the technical scheme: a motor under the net pulp pulping stirring device, including stirring drum, barrel cover, stirring shaft, stirring vane, upper sealing cover, lower sealing cover, connecting flange, stirring motor, stirring drum is set up to the opening upward, the bottom of stirring drum is equipped with pulp outlet, barrel cover is connected in the top of stirring drum, is equipped with stirring water inlet and feed inlet on the barrel cover, upper sealing cover is sealed and is connected in the bottom of stirring drum, lower sealing cover sets up in the below of stirring drum and is connected in the bottom of upper sealing cover, stirring motor sets up in the below of lower sealing cover and is connected with lower sealing cover through connecting flange, the output shaft of stirring motor is fixedly connected with one end of stirring shaft through the shaft coupling, the other end of stirring shaft passes through lower sealing cover, upper sealing cover in proper order to the top and connects stirring vane, stirring shaft is rotatably connected with upper sealing cover, lower sealing cover, and mechanical seal is equipped between stirring shaft and upper sealing cover, lower sealing cover.

[0005] Preferably, the bottom plate of the stirring drum is provided with a through hole, the upper part of the upper sealing cover is a cylinder, the cylinder is embedded in the through hole, a flange is arranged around the cylinder, the flange is connected with the bottom plate of the stirring drum through bolts, and a sealing gasket is arranged between the flange and the bottom plate of the stirring drum.

[0006] Preferably, the cylinder part of the upper sealing cover is provided with a downward opening cavity, the lower sealing cover closes the cavity to form a closed cavity, the stirring shaft passes through the closed cavity, and the two mechanical seals are arranged in the closed cavity.

[0007] Preferably, a cooling water inlet, a cooling water outlet and a cooling water channel are arranged on the upper sealing cover, cooling water enters the closed cavity through the cooling water channel from the cooling water inlet, and the cooling water in the closed cavity flows out from the cooling water outlet through the cooling water channel.

[0008] Preferably, the top end of the stirring shaft is a conical guide part, the lower surface of the conical part is provided with a connecting part, and the connecting part is a partial cylinder with two parallel planes arranged along the length direction of the axis.

[0009] Preferably, the stirring vane comprises a sleeve and a blade, the blade is fixedly connected to the side upright surface of the sleeve, the through hole in the center of the sleeve is matched with the shape of the connecting part of the stirring shaft, the connecting part is detachably connected to the through hole, and a locking screw is arranged to pass through the sleeve and abut on the parallel planes of the connecting part to fix the sleeve on the stirring shaft.

[0010] The beneficial effects of the above technical scheme are as follows:

[0011] 1、The stirring motor is arranged below the stirring barrel in the application, the height of the whole device is reduced, the device is compact and small in size, it is more beneficial to add material into the barrel, and it is convenient to operate and use. Meanwhile, the motor is arranged below, the barrel cover is arranged on the stirring barrel, the barrel cover can be disassembled when necessary, the stirring barrel can be thoroughly cleaned, and the pulp quality is not affected. The barrel cover can also ensure that the clean pulp does not splash outside the stirring barrel during stirring, so that the impurities and pollutants outside cannot enter the stirring barrel and contaminate the clean pulp.

[0012] 2、Two mechanical seals are used to seal the stirring shaft, a mechanical seal group is formed, the sealing isolation between the stirring shaft and the stirring barrel and the stirring shaft and the bearing is completed, the stirring shaft is prevented from being locked due to pulp infiltration, the bearing and the stirring motor are prevented from being damaged and contaminated, and the service life of the bearing and the motor is prolonged. The closed cavity between the upper sealing cover and the lower sealing cover is filled with cooling water with a certain pressure, the pressure cooling water can not only cool the mechanical seal and prolong the service life of the mechanical seal, but also further prevent the clean pulp from infiltrating and leaking.

[0013] 3、The stirring blade is composed of a sleeve and a blade, during installation, the sleeve can be directly sleeved on the stirring shaft from the top of the stirring shaft, the sleeve is fixed on the stirring shaft by means of a locking screw, and the sleeve is particularly convenient to disassemble and replace. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a schematic view of the whole structure of the application;

[0015] Figure 2 is an A-A sectional view of Figure 1 ;

[0016] In the drawing: 1, stirring barrel, 2, barrel cover, 3, feeding port, 4, stirring water inlet, 5, pulp outlet, 6, stirring blade, 61, sleeve, 62, blade, 7, upper sealing cover, 71, cavity, 72, cooling water inlet, 73, cooling water channel, 74, cooling water outlet, 8, mechanical seal, 9, stirring shaft, 10, lower sealing cover, 11, connecting flange, 12, coupling, 13, stirring motor. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the application.

[0018] As Figure 1As shown, the stirring device comprises a stirring barrel 1, a barrel cover 2, a stirring shaft 9, stirring blades 6, an upper sealing cover 7, a lower sealing cover 10, a connecting flange 11, and a stirring motor 13. The stirring barrel 1 is vertically arranged with its opening facing upwards. The barrel cover 2 is bolted to the top of the stirring barrel 1. The feeding port 13 is in the shape of a hopper with its upper part larger than its lower part, and is fixedly connected to the center of the barrel cover 2. The bottom of the stirring barrel 1 is provided with a pulp outlet 1101, through which the stirred clean pulp enters the clean pulp conveying equipment. The barrel cover 2 is provided with a stirring water inlet 1201, which is connected to a water source to supply water into the stirring barrel 1.

[0019] The bottom plate of the stirring barrel 1 is provided with a through hole in its center. The upper part of the upper sealing cover 7 is in the shape of a cylinder, which is fitted into the through hole. The top surface of the cylinder is flush with or slightly higher than the upper surface of the bottom plate of the stirring barrel 1. A flange is arranged around the cylinder, and the flange is connected to the bottom plate of the stirring barrel 1 by means of bolts. A sealing gasket is arranged between the flange and the bottom plate of the stirring barrel 1 to prevent clean pulp from leaking out of the gap between the upper sealing cover 7 and the stirring barrel 1. The cylindrical part of the upper sealing cover 7 is provided with a cavity 71 with its opening facing downwards. The lower sealing cover 10 is connected to the bottom surface of the upper sealing cover 7 to close the cavity and form a sealed chamber. The upper sealing cover 7 is provided with a cooling water inlet 72, a cooling water outlet 74, and a cooling water channel 73. Cooling water enters the sealed chamber through the cooling water inlet and the cooling water channel, and then flows out of the sealed chamber through the cooling water outlet. Two mechanical seals 8 are arranged in the sealed chamber. The stirring shaft 9 passes through the sealed chamber and the mechanical seals 8, and the mechanical seals 8 can be cooled by the cooling water.

[0020] As shown in the drawings, Figure 2 The top end of the stirring shaft 9 is in the shape of a conical guide portion. The lower surface of the conical guide portion is provided with a connecting portion, which is in the shape of a partial cylinder with two parallel planes arranged along the length direction of the axis. The stirring blades 6 comprise a sleeve 61 and blades 62, which are fixedly connected to the side vertical surface of the sleeve 61. The sleeve 61 is provided with a through hole, which is matched with the shape of the connecting portion of the stirring shaft 9. In use, the sleeve 61 is sleeved onto the connecting portion along the guide portion of the stirring shaft 9, and a set screw is passed through the sleeve 61 and is abutted against the parallel planes of the connecting portion to fix the sleeve 61 to the stirring shaft 9. When the stirring blades 6 need to be replaced, the set screw is loosened, and the stirring blades 6 can be pulled out of the stirring shaft 9, which is very convenient.

[0021] The stirring motor 13 is fixedly connected to the lower sealing cover 10 by means of the connecting flange 11. The stirring shaft 9 is connected to the output shaft of the stirring motor 13 by means of a coupling 12. The stirring shaft 9 is rotatably connected to the lower sealing cover 10 by means of a bearing. There is a gap between the stirring shaft 9 and the upper sealing cover 7, so the stirring shaft 9 can rotate relative to the upper sealing cover 7. In this embodiment, the mechanical seals 8 are commercially available parts, which are of type 108-25 and material code W-W.

[0022] The above merely illustrates the preferred embodiments of the present application, but the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, can make equivalent replacement or change within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A motor-embedded pulp-making and stirring device for a pulp cleaner, characterized by The utility model provides a stirring barrel (1), barrel cover (2), stirring shaft (9), stirring blade (6), upper sealing cover (7), lower sealing cover (10), connecting flange (11), stirring motor (13), stirring barrel (1) is set up vertically with the opening upward, the bottom of stirring barrel (1) is equipped with the outlet (1101) of pulp, barrel cover (2) is connected in the top of stirring barrel (1), and barrel cover (2) is equipped with stirring water inlet (1201) and feed inlet (3), upper sealing cover (7) is sealedly connected in the bottom of stirring barrel (1), and lower sealing cover (10) is set up below stirring barrel (1) and is connected in the bottom of upper sealing cover (7), and stirring motor (13) is set up below lower sealing cover (10) and is connected with lower sealing cover (10) through connecting flange (11), and the output shaft of stirring motor (13) is fixedly connected with one end of stirring shaft (9) through the shaft coupling, and the other end of stirring shaft (9) is connected stirring blade (6) after passing through lower sealing cover (10), upper sealing cover (7) in sequence upwards, and stirring shaft (9) is rotatably connected with upper sealing cover (7), lower sealing cover (10), and mechanical seal (8) is equipped between stirring shaft (9) and upper sealing cover (7), lower sealing cover.

2. The motor-embedded net slurry stirring device according to claim 1, characterized in that, The bottom plate center of stirring barrel (1) is equipped with through -hole, and the upper portion of upper sealing cover (7) is cylindrical, and the cylindrical is embedded in the through -hole, and a flange is arranged around the cylindrical, and the flange is connected with the bottom plate of stirring barrel (1) through bolt, and the sealing pad is arranged between the contact surface of flange and the bottom plate of stirring barrel (1).

3. The motor-embedded net slurry stirring device according to claim 2, characterized in that, The cylindrical portion of upper sealing cover (7) is equipped with cavity (71) with opening downward, and lower sealing cover (10) closes the cavity to form a closed cavity, and stirring shaft (9) passes through the closed cavity, and two mechanical seals (8) are arranged in the closed cavity.

4. The motor-embedded net slurry stirring device according to claim 3, characterized in that, Cooling water inlet (72), cooling water outlet (74) and cooling water channel (73) are arranged on upper sealing cover (7), cooling water enters the closed cavity through cooling water channel (73) from cooling water inlet (72), and the cooling water in the closed cavity flows out from cooling water outlet (74) through cooling water channel (73).

5. The motor-embedded net slurry stirring device according to claim 1, characterized in that, The top end of stirring shaft (9) is conical guide part, and the lower surface of the conical body is equipped with connecting part, and the connecting part is part cylindrical with two parallel planes along the length direction of the axis.

6. The motor-embedded net slurry stirring device according to claim 5, characterized in that, The stirring blade (6) comprises a sleeve (61) and a blade (62), the blade (62) is fixedly connected to the side vertical surface of the sleeve (61), the center through hole of the sleeve (61) is matched with the shape of the connecting part of the stirring shaft (9), the connecting part is detachably connected to the through hole, and the clamping screw is fixed on the parallel plane of the connecting part after passing through the sleeve (61) to fix the sleeve (61) on the stirring shaft (9).

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