CN211316906U

CN211316906U - High-efficient heat transfer paddle desiccator admission structure

Info

Publication number: CN211316906U
Application number: CN202020035260.3U
Authority: CN
Inventors: 李盈海; 吴卫伟
Original assignee: NANJING TIANHUA CHEMICAL ENGINEERING CO LTD
Current assignee: Tianhua Institute Nanjing Intelligent Manufacturing Co ltd
Priority date: 2020-01-08
Filing date: 2020-01-08
Publication date: 2020-08-21
Anticipated expiration: 2030-01-08

Abstract

The utility model discloses a high-efficient heat transfer paddle desiccator admission structure for improve equipment's heat exchange efficiency. The steam inlet structure of the efficient heat exchange paddle dryer comprises a left shaft head, a right shaft head, a central steam inlet pipe, a water scooping barrel and hollow blades, wherein the left shaft head and the right shaft head are arranged in a shaft tube; the central steam inlet pipe is connected to the position close to the left shaft head, and an interval is reserved between the central steam inlet pipe and the left shaft head. Still be provided with multiunit steam distribution pipe, correspond every group hollow blade configuration a set of steam distribution pipe, each group steam distribution pipe fixed connection is between central steam inlet pipe and central steam inlet pipe, with central steam inlet pipe and hollow blade inner chamber intercommunication, steam produces the condensate water after passing through the indirect heat transfer of metal wall and material. The condensed water is gathered near the right water scooping barrel under the inclination of the blade itself, and the water scooping barrel discharges the condensed water out of the shaft tube along with the rotation of the shaft body.

Description

High-efficient heat transfer paddle desiccator admission structure

The technical field is as follows:

the utility model relates to a high-efficient heat transfer paddle desiccator admission structure, this admission structure are applicable to the paddle desiccator with steam as hot medium belongs to drying equipment technical field.

Background art:

the paddle dryer is an indirect heating dryer, saturated steam or heat conducting oil can be adopted as a heating medium, the heat medium indirectly heats materials through the hollow shaft and the jacket, the materials move to an outlet while being dried under the stirring of the paddle shaft, the hot shaft and the jacket are two main parts for heat exchange, the hot shaft plays a leading role, wedge-shaped blades are welded on the hot shaft, the steam indirectly contacts and exchanges heat with the materials after entering the blade cavity through the hollow shaft, and condensed water in the hot shaft utilizes the self inclination of the paddle dryer and is discharged out of the shaft body through the water scooping cylinder. For paddle dryers, the design of the steam channel is crucial.

The existing paddle dryer steam inlet structure:

as shown in fig. 1, in a typical steam inlet heat exchange structure of an existing paddle dryer, a central steam inlet pipe 4 is inserted into one end of a right shaft head 3, and due to the fact that the insertion length is short, condensed water can submerge the steam inlet pipe after reaching a certain amount, steam short circuit is caused, and the condensed water cannot enter blades to perform heat exchange, so that the heat exchange efficiency of equipment is affected, and even the capacity of the dryer cannot reach the standard.

As shown in figure 1, among the current paddle dryer, central siphon 2 is equipped with the gas pocket with 1 junction of blade, and steam gets into the heat transfer in the blade cavity by the gas pocket, can be because of steam volume is not enough in the blade, can't guarantee fully to change, influences the blade stirring in-process and the heat exchange efficiency of material.

The invention content is as follows:

the utility model relates to a high-efficient heat transfer paddle desiccator admission structure for improve equipment's heat exchange efficiency.

The utility model discloses a concrete technical scheme as follows:

a high-efficiency heat exchange paddle dryer steam inlet structure comprises a left shaft head, a right shaft head, a central steam inlet pipe, a water scooping barrel and hollow blades, wherein the left shaft head and the right shaft head are arranged in a shaft tube; the central steam inlet pipe is connected to the position close to the left shaft head, and an interval is reserved between the central steam inlet pipe and the left shaft head.

Preferably, an extended steam inlet pipe is additionally arranged on the original central steam inlet pipe, and the extended steam inlet pipe extends to a position close to the left shaft head.

Preferably, the lengthened steam inlet pipe is hermetically connected with the central steam inlet pipe in a sleeving manner.

Preferably, the steam distribution device is further provided with a plurality of groups of steam distribution pipes, one group of steam distribution pipes is configured corresponding to each group of hollow blades, and each group of steam distribution pipes is fixedly connected between the shaft pipe and the central steam inlet pipe and is communicated with the inner cavity of each hollow blade.

Preferably, the left and right shaft heads are fixedly welded on two sides of the shaft tube. This construction is more robust in strength than bolted connections.

Preferably, the hollow blade is welded to the shaft tube.

Preferably, the hollow blade is a metal blade.

Compared with the prior art, the utility model have following beneficial effect:

1. the utility model discloses make the transformation to original paddle dryer admission structure, it is not enough deep into central siphon length in the central admission pipe in the original structure, and the admission pipe probably is submerged after the comdenstion water reaches a certain amount, causes the vapour short circuit, and unable entering blade carries out the heat exchange to influence the heat exchange efficiency of equipment, cause the desiccator productivity not up to standard even.

2. The utility model discloses extend to one section other spindle nose department with central admission pipe, guarantee that the steam pipeline is smooth and easy to ensure that steam enters into each blade smoothly, abundant heat transfer can improve heat exchange efficiency, guarantees the desiccator productivity.

3. The utility model discloses in, the direct connection has steam distribution pipe on paddle desiccator's the central admission pipe, and steam distribution pipe's bore is according to blade and central siphon size selection, guarantees that steam evenly gets into the blade, improves blade equipment's heat exchange efficiency.

Description of the drawings:

FIG. 1 is a schematic view of a hot shaft structure used in a conventional project;

in fig. 1: 1-a blade; 2-shaft tube; 3-a shaft head; 4-a central steam inlet pipe; 5-a water scooping cylinder;

FIG. 2 is a schematic structural diagram of the present invention (also referred to as the abstract drawing);

FIG. 3 is a view taken along line A-A of FIG. 2;

FIG. 4 is a cross-sectional view of a blade of the present invention;

fig. 5 is a schematic structural diagram of an embodiment of the present invention;

in fig. 2-5: 1-a blade; 2-shaft tube; 3-a shaft head; 4-a central steam inlet pipe; 5-a steam distribution pipe; 6-a water scooping cylinder; 7-lengthening the steam inlet pipe.

The specific implementation mode is as follows:

the present invention will be further described with reference to the accompanying drawings.

Example 1:

as shown in fig. 2 and 4, the utility model discloses modified paddle dryer admission structure relates to paddle dryer's hot axle construction, including paddle dryer blade 1, central siphon, spindle nose, central admission pipe 4, steam distribution pipe 5 and water scooping section of thick bamboo 6. The shaft tube of the paddle dryer and the shaft head are welded into a paddle shaft body.

In fig. 2, the right spindle nose 3 is connected to the axle tube 2, and the left spindle nose and the right spindle nose 3 have substantially the same structure, so the left spindle nose is omitted and not fully shown. The blades 1 are welded outside the shaft tube of the paddle dryer, steam enters from the central steam inlet tube 4 in the left shaft head, the central steam inlet tube 4 is directly communicated to the left shaft head, the central steam inlet tube is welded with the steam distribution tubes 5, each steam distribution tube is communicated with the inner cavity of each blade, the steam entering the central steam inlet tube can smoothly enter each blade for heat exchange, and the steam generates condensed water after indirectly exchanging heat with materials through the metal wall surface. The condensed water is collected near the right-side scooping barrel 6 under the inclination of the blade itself, and the scooping barrel 6 discharges the condensed water out of the shaft tube along with the rotation of the shaft body, as shown in fig. 3.

The central steam inlet pipe 4 is directly communicated to the left shaft head, and a distance of about 50mm is reserved between the central steam inlet pipe and the left shaft head. The steam path is smooth and free from the influence of the condensed water.

The central steam inlet pipe is welded with the steam distribution pipes 5, each steam distribution pipe is communicated with the inner cavity of each blade, steam entering the central steam inlet pipe can smoothly enter each blade for heat exchange, and the heat exchange efficiency is improved.

Steam distribution pipe 5 welds on central admission pipe, and cavity intercommunication in every group steam distribution pipe and the blade guarantees that the steam in the central admission pipe can get into each blade cavity smoothly and carry out the heat exchange, and steam produces the condensate water after passing through metal wall and the indirect heat transfer of material. The condensed water is collected near the right-side scooping barrel 6 under the inclination of the blade itself, and the scooping barrel 6 discharges the condensed water out of the shaft tube along with the rotation of the shaft body.

Example 2:

as shown in fig. 5, the utility model discloses a reform transform the realization to current equipment, add to original central admission pipe 4 and establish one section extension admission pipe 7, this extension admission pipe 7 extends to being close to left spindle nose position, and extension admission pipe 7 suit is in original central admission pipe 7 to adopt welding mode fixed and sealing connection.

The steam inlet structure of the paddle dryer comprises a left shaft head, a right shaft head, a central steam inlet pipe 4, a lengthened steam inlet pipe 7, a water scooping barrel 6 and hollow blades 1 connected to the outer wall of a shaft pipe 2, wherein the left shaft head and the right shaft head are arranged in the shaft pipe 2; the central shaft tube 2 is connected with the left shaft head and the right shaft head to form a paddle shaft body, the central steam inlet pipe 4 is connected into the central shaft tube 2 from the side of the right shaft head 3, the lengthened steam inlet pipe 7 is additionally arranged on the central steam inlet pipe 4, the lengthened steam inlet pipe 7 is connected into the central shaft tube to be close to the position of the left shaft head, and a distance of about 50mm is reserved between the lengthened steam inlet pipe 7 and the left shaft head. Therefore, the steam inlet pipe is directly communicated to the left shaft head, the steam path is smooth, and the influence of the condensate water quantity is avoided. The length of the central steam inlet pipe in the original structure extending into the shaft tube is not enough, the steam inlet pipe can be submerged after condensed water reaches a certain amount, a steam short circuit is caused, and the problem that heat exchange of the equipment is influenced due to the fact that the condensed water cannot enter the blades for heat exchange is solved, the heat exchange efficiency is improved, and the capacity of the dryer is guaranteed.

Example 3:

the alternative design of this example is:

the left and right shaft heads are installed on two sides of the shaft tube 2 in a fixed welding mode. This construction is more robust in strength than bolted connections. Hollow blade 1 is the metal material blade, and hollow blade 1 welds on central siphon 2, and this kind of structure is compared better with bolted connection in intensity.

The shaft tube 2 of the paddle dryer is welded and fixed with the shaft head 3. Each steam distribution pipe is communicated with the cavity in each blade, so that steam entering the central steam inlet pipe can smoothly enter each blade for heat exchange, and the heat exchange efficiency is improved.

Claims

1. A steam inlet structure of a high-efficiency heat exchange paddle dryer comprises a left shaft head, a right shaft head, a central steam inlet pipe (4), a water scooping barrel (6) and hollow blades (1) connected to the outer wall of a shaft pipe (2), wherein the left shaft head and the right shaft head are arranged in the shaft pipe (2); central siphon (2) connect into the paddle axis body with left and right spindle nose, central admission pipe (4) from right spindle nose (3) side access central siphon (2), its characterized in that: the central steam inlet pipe (4) is connected to the shaft tube to a position close to the left shaft head, and a space is reserved between the central steam inlet pipe and the left shaft head.

2. The high-efficiency heat exchange paddle dryer steam inlet structure of claim 1, wherein: a section of lengthened steam inlet pipe (7) is additionally arranged on the original central steam inlet pipe (4), and the lengthened steam inlet pipe (7) extends to a position close to the left shaft head.

3. The high-efficiency heat exchange paddle dryer steam inlet structure of claim 2, wherein: the lengthened steam inlet pipe (7) is hermetically connected with the central steam inlet pipe (4) in a sleeving manner.

4. The high-efficiency heat exchange paddle dryer steam inlet structure as claimed in any one of claims 1 to 3, wherein: still be provided with multiunit steam distribution pipe (5), correspond every group hollow blade (1) configuration a set of steam distribution pipe (5), each group steam distribution pipe (5) fixed connection is between central admission pipe (4) and central shaft pipe (2), with central admission pipe (4) and hollow blade (1) inner chamber intercommunication.

5. The high-efficiency heat exchange paddle dryer steam inlet structure of claim 4, wherein: the left shaft head and the right shaft head are respectively fixedly welded on two sides of the shaft tube (2).

6. The high-efficiency heat exchange paddle dryer steam inlet structure of claim 5, wherein: the hollow blade (1) is welded on the shaft tube (2).

7. The high-efficiency heat exchange paddle dryer steam inlet structure of claim 6, wherein: the hollow blade (1) is a metal blade.