Raw material tank for polyurethane foaming

Abstract

The utility model discloses a raw material tank for polyurethane foaming, which belongs to the technical field of raw material tanks and comprises a tank body, a cover body, a motor and a stirring shaft, the cover body is arranged at the top of the tank body, the motor is arranged on the cover body, a rotating shaft of the motor faces downwards and is connected with the stirring shaft, and the inside of the tank body is divided into an upper chamber and a lower chamber by a horizontally arranged partition plate. A through hole is formed in the center of the partition plate, a bearing is embedded in the through hole, the stirring shaft penetrates through and is fixed to the bearing, mechanical seals are arranged on the two sides of the bearing, stirring blades are arranged on the portions, located in the two cavities, of the stirring shaft, feeding ports are formed in the upper portions of one sides of the two cavities, and discharging ports are formed in the lower portions of the other sides of the two cavities. According to the raw material tank for polyurethane foaming, the interior of the tank body is divided into the upper cavity and the lower cavity through the partition plate, the upper cavity and the lower cavity are used for containing two kinds of raw materials respectively, so that the two kinds of raw materials can be stirred only through one stirring shaft, cost is saved, the two cavities are vertically arranged, and occupied space is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of raw material tanks, in particular to a raw material tank for polyurethane foaming. Background Art

[0002] Polyurethane foaming is a common material preparation method. Its raw materials mainly include two main components: polyether polyol and isocyanate. These two raw materials react under specific conditions to produce polyurethane foam. Polyether polyol (also known as A material or white material) provides the basic structure and elasticity of the foam. Isocyanate (also known as B material or black material) reacts with polyether polyol to form the hard segment of polyurethane, which gives the foam strength and durability. Traditionally, these two materials are contained in two separate raw material tanks. Therefore, two sets of motors and agitators are required, which increases costs and takes up a lot of space.

[0003] The patent document with announcement number CN 202640645 U discloses a raw material tank for a polyurethane foaming machine, which includes a tank body with an end cover and a support leg. A stirring device driven by a power device passes through the tank body. The cavity of the tank body is separated into a white material chamber and a black material chamber by a partition. The upper and lower ends of the white material chamber and the black material chamber are respectively provided with a feed port and a discharge port. The white material chamber and the black material chamber are integrated into one tank body, thereby reducing the footprint of the entire raw material tank system and reducing the consumption of raw materials, effectively saving costs. A stirring device passes through the white material chamber and the black material chamber respectively. The upper ends of the two stirring devices are respectively matched with the drive gear through a transmission gear, and the drive gear is connected to the power unit through a drive shaft. After adopting this structural form, the power unit can simultaneously drive the stirring devices in the white material chamber and the black material chamber to rotate, so that the two work synchronously, which not only simplifies the structure of the entire raw material tank system, saves costs, but also reduces the consumption of resources and energy. However, the utility model divides the tank into two left and right chambers, and therefore needs to be equipped with two stirring shafts, and additional transmission components are required to enable the motor to drive the two stirring shafts, resulting in still high costs and still large horizontal space occupation. Utility Model Content

[0004] In view of this, the present invention aims to solve the deficiencies of the prior art and provides a polyurethane foaming raw material tank, which further reduces costs and horizontal space occupation.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a raw material tank for polyurethane foaming, comprising a tank body, a cover body, a motor and a stirring shaft, the cover body is arranged on the top of the tank body, the motor is arranged on the cover body, the rotating shaft of the motor faces downward and is connected to the stirring shaft, the interior of the tank body is divided into upper and lower chambers by a horizontally arranged partition, a through hole is opened in the center of the partition, a bearing is embedded in the through hole, the stirring shaft passes through and is fixed to the bearing, and mechanical seals are arranged on both sides of the bearing, the part of the stirring shaft located in the two chambers is provided with stirring blades, a feed port is provided on the upper part of one side of the two chambers, and a discharge port is provided on the lower part of the other side.

[0006] Furthermore, an annular mounting plate is provided on the inner wall in the middle of the tank body, and a plurality of screw holes are evenly opened on the circumference of the annular mounting plate, and a plurality of circular holes are evenly opened on the circumference of the partition plate. The number of the circular holes is the same as the screw holes, and the positions correspond one to one. The partition plate and the annular mounting plate are connected and fixed by a plurality of bolts, and an annular sealing gasket is provided between the partition plate and the annular mounting plate.

[0007] Furthermore, the motor shaft passes through the center hole of the cover body, and a connecting sleeve is provided at the end. A blind hole is opened at the bottom of the connecting sleeve, and the cross-section of the blind hole is D-shaped. The cross-section of the top of the stirring shaft is also D-shaped, and is matched and inserted into the blind hole.

[0008] Furthermore, the through hole is a three-layer stepped hole, the bearing is embedded in the middle position of the through hole, and the two mechanical seals are respectively embedded in the upper and lower sides of the through hole.

[0009] Furthermore, a plurality of supporting legs are provided at the bottom of the tank body.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0011] 1. The raw material tank for polyurethane foaming of the utility model is divided into two chambers, an upper chamber and a lower chamber, by a partition, which are used to hold two raw materials respectively. Thus, only one stirring shaft is used to stir the two raw materials, saving costs. Moreover, the two chambers are arranged vertically, which also reduces the occupied space.

[0012] 2. In the utility model polyurethane foaming raw material tank, the stirring shaft and the partition are connected by a bearing, and mechanical seals are provided on both sides, so that the two raw materials can be stirred separately to avoid leakage and mixing.

[0013] 3. In the utility model polyurethane foaming raw material tank, the partition is connected to the annular mounting plate on the inner wall of the tank body by multiple bolts, that is, the partition, the stirring shaft and the tank body are in a detachable connection state, which is convenient for cleaning and maintenance of the tank body. An annular sealing gasket is provided between the partition and the annular mounting plate, which also makes the two chambers independent of each other.

[0014] 4. The utility model polyurethane foaming raw material tank, the connecting sleeve under the motor shaft and the stirring shaft adopt a matching plug-in transmission method, that is, the two are in a detachable state. With this connection method, on the one hand, the partition and the annular mounting plate are fixed by bolts, and then the cover is covered on the tank body to connect the motor shaft and the stirring shaft, which is convenient for the installation of the raw material tank and, on the other hand, for the maintenance of the motor. In addition, the D-shaped hole plug-in method can realize the transmission of the motor shaft and the stirring shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional view of an embodiment of the utility model;

[0016] Figure 2 yes Figure 1 Enlarged view of the part A in the middle;

[0017] Figure 3 yes Figure 1 Enlarged view of the middle part B;

[0018] In the figure: 1-tank body, 2-cover body, 3-stirring shaft, 4-motor body, 5-reducer, 6-partition, 7-bearing, 8-mechanical seal, 9-stirring blade, 10-feed port, 11-discharge port, 12-support leg, 13-annular mounting plate, 14-bolt, 15-annular sealing gasket, 16-connecting sleeve. DETAILED DESCRIPTION

[0019] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0020] Example 1

[0021] like Figures 1 to 3As shown, the raw material tank for polyurethane foaming includes a tank body 1, a cover body 2, a motor and a stirring shaft 3. The cover body 2 is set on the top of the tank body 1, and the motor is set on the cover body 2. The motor consists of a motor body 4 and a reducer 5. The motor body 4 is placed horizontally on the cover body 2, and the rotating shaft of the reducer 5 is downward and connected to the stirring shaft 3. The interior of the tank body 1 is divided into an upper and lower chamber by a horizontally arranged partition 6. A through hole is opened in the center of the partition 6, and a bearing 7 is embedded in the through hole. The stirring shaft 3 passes through and is fixed to the bearing 7, and mechanical seals 8 are set on both sides of the bearing 7. The parts of the stirring shaft 3 located in the two chambers are provided with stirring blades 9. A feed port 10 is set at the upper part of one side of the two chambers, and a discharge port 11 is set at the lower part of the other side. A plurality of legs 12 are set at the bottom of the tank body 1.

[0022] An annular mounting plate 13 is provided on the inner wall in the middle of the tank body 1, and a plurality of screw holes are evenly opened on the circumference of the annular mounting plate 13, and a plurality of circular holes are evenly opened on the circumference of the partition 6. The circular holes are the same in number and size as the screw holes, and their positions correspond one to one. The partition 6 and the annular mounting plate 13 are connected and fixed by a plurality of bolts 14, and an annular sealing gasket 15 is provided between the partition 6 and the annular mounting plate 13. The gasket is made of silicone and has through-holes corresponding to the screw holes. The diameter of the through-holes is slightly smaller than that of the screw holes.

[0023] The motor shaft passes through the center hole of the cover body 2, and a connecting sleeve 16 is set at the end. A blind hole is opened at the bottom of the connecting sleeve 16, and the cross section is D-shaped. The cross section of the top of the stirring shaft 3 is also D-shaped and is matched and inserted into the blind hole.

[0024] The through hole is a three-layer stepped hole, the bearing 7 is embedded in the middle position of the through hole, and the two mechanical seals 8 are respectively embedded in the upper and lower sides of the through hole.

[0025] When assembling the raw material tank for polyurethane foaming of the embodiment of the utility model, first place the integrated assembly of the partition and the stirring shaft in the tank body, make the partition contact with the annular mounting plate, align the round hole and the screw hole, and then use multiple bolts to connect and fix the partition and the annular mounting plate, then place the cover body on the tank body, make the upper end of the stirring shaft match and insert into the blind hole of the connecting sleeve, and then the cover body and the tank body are also connected and fixed by bolts, and the assembly is completed. Subsequently, inject material A and material B into the two chambers respectively from the feed port on one side of the chamber, start the motor for stirring, and the discharge ports on the other side of the two chambers are connected to the polyurethane foaming machine through pipelines and pump bodies respectively.

[0026] The utility model adopts a horizontal partition to separate the upper and lower chambers in the tank body, and shares a stirring shaft and motor, which greatly reduces the production cost. Moreover, compared with the existing raw material tanks with left and right chambers, the utility model reduces the transmission components, thereby reducing power loss, saving energy, and having good economy.

[0027] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field can still modify or replace the specific implementation methods of the present invention with equivalents. Any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention are within the scope of protection of the claims of the present invention to be approved.

Claims

1. A polyurethane foaming raw material tank, comprising a tank body, a cover, a motor, and a stirring shaft, wherein the cover is disposed on the top of the tank body, the motor is disposed on the cover, the rotating shaft of the motor faces downward and is connected to the stirring shaft, and is characterized in that: The interior of the tank body is divided into upper and lower chambers by a horizontally arranged partition. A through hole is opened in the center of the partition, and a bearing is embedded in the through hole. The stirring shaft passes through and is fixed to the bearing, and mechanical seals are provided on both sides of the bearing. The stirring shaft is provided with stirring blades on the parts located in the two chambers. A feed port is provided on the upper part of one side of the two chambers, and a discharge port is provided on the lower part of the other side.

2. The polyurethane foaming raw material tank according to claim 1, wherein: An annular mounting plate is provided on the inner wall in the middle of the tank body, and a plurality of screw holes are evenly arranged on the circumference of the annular mounting plate. A plurality of circular holes are evenly arranged on the circumference of the partition plate. The number of the circular holes is the same as the screw holes, and the positions correspond one to one. The partition plate and the annular mounting plate are connected and fixed by a plurality of bolts, and an annular sealing gasket is provided between the partition plate and the annular mounting plate.

3. The polyurethane foaming raw material tank according to claim 2, characterized in that: The motor shaft passes through the center hole of the cover body, and a connecting sleeve is provided at the end. A blind hole is opened at the bottom of the connecting sleeve, and the cross section of the blind hole is D-shaped. The cross section of the top of the stirring shaft is also D-shaped and is matched and inserted into the blind hole.

4. The polyurethane foaming raw material tank according to claim 1, wherein: The through hole is a three-layer stepped hole, the bearing is embedded in the middle position of the through hole, and the two mechanical seals are respectively embedded in the upper and lower sides of the through hole.

5. The polyurethane foaming raw material tank according to claim 1, characterized in that: A plurality of supporting legs are arranged at the bottom of the tank body.

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