Deslagging valve device for continuous furfural production

Abstract

The utility model aims to provide a deslagging valve device for continuous furfural production, which belongs to the technical field of furfural production and comprises a blade cylinder, an upper blocking plate and a lower blocking plate are respectively arranged in the middle and at the bottom of the blade cylinder and are respectively provided with an opening, a rotating shaft penetrates through the center of the blade cylinder, and the rotating shaft is connected with the blade cylinder. A chain wheel is arranged on the portion, located at the bottom of the blade barrel, of the rotating shaft and connected with a motor through a chain. By using the gas-slag separator, gas-slag separation can be realized, gas can be sealed, and slag discharge of materials with small moisture content and particles not exceeding 5mm is not blocked.

Description

Technical Field

[0001] The utility model belongs to the technical field of furfural production, and particularly relates to a slag discharge valve device for continuous furfural production. Background Art

[0002] Furfural is a compound organic compound produced primarily through the acid hydrolysis of pentosans to form pentoses, followed by dehydration and cyclization. Currently, furfural is primarily produced from agricultural crops like corncobs. Its active chemical properties and numerous derivatives make it widely used in medicine, plastics, and agriculture. Furthermore, utilizing corncobs as a "waste" crop also has environmental benefits. During furfural production, a hydrolysis vessel is used to store the raw materials.

[0003] Currently, furfural production and hydrolysis are the most critical components of furfural production in my country. A typical hydrolysis process is the widely used batch-series hydrolysis process. While this process has evolved over the years, the hydrolysis pots have only grown in size, and the batch process has several drawbacks: the process repeats itself: filling, pressurizing, hydrolysis, and emptying.

[0004] The furfural hydrolysis process finally discharges slag from the reactor (hydrolyzer) into a buffer tank, which then discharges the slag into the lower portion of the steam-slag separator. The slag moisture content is between 50%-60%-65%, which is unstable. Using conventional airtight valves and other valves, the high slag moisture content makes agglomeration and blockage difficult to resolve, and this problem often occurs. Slag moisture levels above 50% are also prone to agglomeration when rapidly rotating the slag out of the slag collector. Utility Model Content

[0005] In view of the above problems, the utility model provides a slag discharge valve device for continuous furfural production.

[0006] The utility model adopts the following technical solutions:

[0007] A slag discharge valve device for continuous furfural production includes a blade cylinder, an upper blocking plate and a lower blocking plate are respectively provided in the middle and bottom of the blade cylinder, the upper blocking plate and the lower blocking plate are respectively provided with openings, a rotating shaft is passed through the center of the blade cylinder, blades are provided on the rotating shaft, a sprocket is provided at the part of the rotating shaft located at the bottom of the blade cylinder, and the sprocket is connected to a motor through a chain.

[0008] Furthermore, the number of blades on the upper portion of the blade cylinder located on the upper blocking plate is four and they are arranged alternately.

[0009] Furthermore, the number of blades located in the lower part of the upper blocking plate of the blade cylinder is two, and they are arranged symmetrically relative to the rotation axis.

[0010] Furthermore, the openings of the upper blocking plate and the lower blocking plate are symmetrically arranged, and the size of the opening does not exceed the size of one blade.

[0011] Furthermore, a shaft sleeve bracket is provided at the portion of the rotating shaft located at the upper blocking plate, a nylon sleeve is provided in the shaft sleeve bracket, and a blade fixing frame is provided at the top end of the shaft sleeve bracket.

[0012] Furthermore, the rotating shaft is located at the bottom of the blade cylinder and is connected to a bearing through a bearing bracket, and a stuffing box is provided in the bearing bracket.

[0013] Furthermore, a dust shield is provided at the bottom of the bearing, and the dust shield is sleeved on the rotating shaft.

[0014] Furthermore, a flange for connection is provided at the top end of the blade cylinder.

[0015] The beneficial effects of the utility model are as follows:

[0016] 1. By using this utility model, gas-slag separation can be achieved, gas can be sealed, and slag discharge of materials with low moisture content and particles not exceeding 5mm will not be blocked.

[0017] 2. By using this utility model, the problems of material blocking and material spraying in slag machine can be solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Among them: 1-blade cylinder; 2-upper blocking plate; 3-lower blocking plate; 4-rotating shaft; 5-blade; 6-sprocket; 7-sleeve bracket; 8-blade fixing frame; 9-bearing bracket; 10-bearing; 11-stuffing box; 12-dust shield; 13-flange. DETAILED DESCRIPTION

[0020] The present invention will be further described with reference to the accompanying drawings.

[0021] As shown in the figure, a slag discharge valve device for continuous furfural production includes a blade cylinder 1, an upper blocking plate 2 and a lower blocking plate 3 are respectively provided in the middle and bottom of the blade cylinder 1, and the upper blocking plate 2 and the lower blocking plate 3 are respectively provided with openings. A rotating shaft 4 is passed through the center of the blade cylinder 1, and a blade 5 is provided on the rotating shaft 4. The portion of the rotating shaft 4 located at the bottom of the blade cylinder 1 is provided with a sprocket 6, and the sprocket 6 is connected to a motor through a chain.

[0022] Furthermore, the number of blades on the upper portion of the blade cylinder 1 located on the upper blocking plate 2 is four and they are arranged alternately.

[0023] Furthermore, the number of blades in the blade cylinder 1 located at the lower part of the upper blocking plate 2 is two, and they are symmetrically arranged relative to the rotating shaft 4.

[0024] Furthermore, the openings of the upper blocking plate 2 and the lower blocking plate 3 are symmetrically arranged, and the size of the opening does not exceed the size of one blade 5 .

[0025] Furthermore, a shaft sleeve bracket 7 is provided on the portion of the rotating shaft 4 located at the upper blocking plate 2 , a nylon sleeve is provided inside the shaft sleeve bracket 7 , and a blade fixing frame 8 is provided at the top end of the shaft sleeve bracket 7 .

[0026] Furthermore, the rotating shaft 4 is located at the bottom of the blade cylinder 1 and is connected to a bearing 10 through a bearing bracket 9, and a stuffing box 11 is provided in the bearing bracket 9.

[0027] Furthermore, a dust shield 12 is provided at the bottom of the bearing 10 , and the dust shield 12 is sleeved on the rotating shaft 4 .

[0028] Furthermore, a flange 13 for connection is provided at the top end of the blade cylinder 1.

[0029] In the utility model, the supporting power is originally an electric motor with a gearbox and a chain drive, which drives the device to rotate at 15 revolutions per minute.

[0030] Considering the corrosion of gas and materials, the pressure bearing and roller bearing are placed at the bottom, in a bearing bracket. This is also convenient for oiling and maintenance.

[0031] Set up stuffing box to prevent leakage.

[0032] There are four evenly distributed blades on the upper portion of the upper blocking plate 2, which are combined with the blade barrel to perform a sealing function.

[0033] The openings of the upper blocking plate 2 and the lower blocking plate 3 are symmetrically arranged, and the size of the opening does not exceed the size of one blade 5 .

[0034] The upper blocking plate of the blade cylinder 1 is provided with a shaft sleeve bracket, and the shaft sleeve is filled with a nylon sleeve for guiding and fixing.

[0035] The lower part of the upper blocking plate 2 is combined with the blade cylinder (the blade cylinder must be larger than the volume of the next slag discharge).

[0036] This utility model features two layers of blades, one connected to the slag collector. This design ensures that with each slag discharge, the space within the slag collector containing the stirring teeth is larger than the space occupied by the previous discharge, ensuring seamless stirring and free fall to the lower section. Connected to the lower section is a seal with stirring teeth. This seal is a highly precision-machined component. The slag discharged during hydrolysis contains acetic acid, which is corrosive to ordinary steel. Therefore, corrosion-resistant 316L stainless steel is used in the manufacture of this equipment.

[0037] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. A slag discharge valve device for continuous furfural production, characterized by: The invention comprises a blade cylinder (1), wherein an upper blocking plate (2) and a lower blocking plate (3) are respectively provided in the middle and the bottom of the blade cylinder (1), wherein the upper blocking plate (2) and the lower blocking plate (3) are respectively provided with openings, a rotating shaft (4) is passed through the center of the blade cylinder (1), and blades (5) are provided on the rotating shaft (4), and a sprocket (6) is provided on the portion of the rotating shaft (4) located at the bottom of the blade cylinder (1), and the sprocket (6) is connected to a motor via a chain; the number of blades on the portion of the blade cylinder (1) located above the upper blocking plate (2) is four and they are arranged alternately.

2. A slag discharge valve device for continuous furfural production according to claim 1, characterized in that: The blade cylinder (1) has two blades located at the lower part of the upper blocking plate (2), which are symmetrically arranged relative to the rotating shaft (4).

3. The slag discharge valve device for continuous furfural production according to claim 1, characterized in that: The openings of the upper blocking plate (2) and the lower blocking plate (3) are symmetrically arranged, and the size of the openings does not exceed the size of one blade (5).

4. The slag discharge valve device for continuous furfural production according to claim 1, characterized in that: The portion of the rotating shaft (4) located on the upper blocking plate (2) is provided with a shaft sleeve bracket (7), a nylon sleeve is provided in the shaft sleeve bracket (7), and a blade fixing frame (8) is provided at the top end of the shaft sleeve bracket (7).

5. The slag discharge valve device for continuous furfural production according to claim 1, characterized in that: The rotating shaft (4) is located at the bottom of the blade barrel (1) and is connected to a bearing (10) via a bearing bracket (9). A stuffing box (11) is provided in the bearing bracket (9).

6. A slag discharge valve device for continuous furfural production according to claim 5, characterized in that: A dust shield (12) is provided at the bottom of the bearing (10), and the dust shield (12) is sleeved on the rotating shaft (4).

7. The slag discharge valve device for continuous furfural production according to claim 1, characterized in that: The top end of the blade cylinder (1) is provided with a flange (13) for connection.

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