Xylose washing centrifugal machine

Abstract

The xylose washing centrifugal machine comprises a driving device, a transmission mechanism, a rotary drum and a shell outside the rotary drum, a centrifugal cavity is formed in the rotary drum, and a liquid-steam pipeline and a feeding port which are communicated with the centrifugal cavity are installed on the shell. And the liquid-steam pipeline comprises a liquid flow pipeline and a steam pipeline which are separately arranged or share one outlet. According to the xylose washing device, the liquid-steam pipeline is arranged, partial water washing is replaced by water steam washing, water is firstly introduced into the liquid flow pipeline, xylose mother liquor is washed, then water steam is introduced into the steam pipeline, the water steam can take away impurities on xylose particles, meanwhile, the xylose particles are prevented from being brought into the xylose mother liquor, and therefore the yield and purity of xylose are improved.

Description

Technical Field

[0001] The utility model relates to a water washing device in xylose preparation, in particular to a centrifuge for improving the purity and yield of xylose. Background Art

[0002] At present, as an important biological resource, hemicellulose has a wide range of sources, covering multiple fields such as agricultural plants, textile industrial waste, and paper mills. By hydrolyzing hemicellulose and refining and purifying it, xylose can be obtained.

[0003] In the process of preparing xylose from hemicellulose, it is necessary to wash the xylose mother liquor to obtain refined xylose. The water washing is usually carried out by a centrifuge. The centrifuge consists of a centrifugal chamber, a motor, a transmission structure, and a water flow pipeline. The xylose mother liquor is washed in the centrifugal chamber to separate xylose particles from the liquid. Since the xylose mother liquor needs to reach the purity requirements of industry or food, multiple water washings are required. However, multiple water washings will bring more xylose particles into the xylose mother liquor, resulting in a low yield of xylose particles. Summary of the Utility Model

[0004] The utility model aims to solve the problem that the existing xylose mother liquor needs to be washed multiple times, resulting in a low yield of xylose particles, and proposes a centrifugal device.

[0005] The technical method of the utility model is as follows:

[0006] A xylose water washing centrifuge, comprising a driving device, a transmission mechanism, a drum, and a housing outside the drum. The inside of the drum is a centrifugal chamber, and it is characterized in that: a liquid-vapor pipeline and a feed inlet communicating with the centrifugal chamber are installed on the housing; the liquid-vapor pipeline includes a liquid flow pipeline and a steam pipeline, and the two are separately arranged or share a common outlet.

[0007] A number of small holes are opened on the steam pipeline.

[0008] Liquid passing holes are opened on the side wall of the drum, and a liquid outlet is arranged on the housing. The liquid passing holes are communicated with the liquid outlet.

[0009] An aggregate hopper is arranged below the drum, and the aggregate hopper is communicated with the discharge port on the housing.

[0010] A cold jacket is arranged outside the housing.

[0011] A refrigerant inlet pipe and a refrigerant outlet pipe are arranged outside the cold jacket, and the refrigerant inlet pipe is communicated with the refrigerant outlet pipe.

[0012] A buffer plate is arranged below the feed inlet in the centrifugal chamber.

[0013] The steam pipeline extends into the bottom of the centrifugal chamber.

[0014] The driving device is a motor, which is arranged on the outer side of the housing outside the drum.

[0015] The transmission mechanism includes a speed reducer, a rotating shaft, and a shaft sleeve. The rotating shaft is connected to the drum.

[0016] The utility model has the following beneficial effects:

[0017] First, the utility model is provided with a liquid-vapor pipeline, enabling partial water washing to be replaced by steam washing. The liquid flow pipeline first introduces water to wash the xylose mother liquor. Then, the steam pipeline introduces water vapor, which can carry away the impurities on the xylose particles and avoid the xylose particles from being brought into the xylose mother liquor, thereby improving the output and purity of xylose.

[0018] Second, the utility model is provided with a liquid-vapor pipeline. Since steam washing uses less water than water washing, a large amount of water resources can be saved and the cost can be reduced. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of the xylose water washing centrifuge of the utility model.

[0020] In the figure:

[0021] 1 - driving device, 101 - motor, 2 - transmission mechanism, 201 - rotating shaft, 202 - speed reducer, 3 - housing, 301 - feed inlet, 302 - liquid outlet, 303 - discharge outlet, 4 - drum, 401 - liquid passing hole, 5 - liquid-vapor pipeline, 501 - liquid flow pipeline, 502 - steam pipeline, 6 - aggregate hopper, 7 - cold jacket, 701 - refrigerant inlet pipe, 702 - refrigerant outlet pipe, 8 - buffer plate, 9 - lifting lug, 10 - drum support, 11 - drum positioning liquid rack, 12 - coupling, 13 - locking nut, 14 - motor bracket, 15 - bracket reinforcement, 16 - housing reinforcement. Specific Embodiments

[0022] The present utility model will be further described in detail below through specific implementation cases and accompanying drawings. It should be understood that these embodiments are only used to illustrate the present utility model and not to limit the protection scope of the present utility model. After reading the present utility model, various equivalent modifications made by those skilled in the art to the present utility model fall within the scope defined by the appended claims of this application. In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present utility model.

[0023] As Figure 1 shown, the present utility model provides a xylose water-washing centrifuge, which includes a driving device 1, a transmission mechanism 2, a drum 4, and a housing 3 outside the drum 4. The inside of the drum 4 is a centrifugal chamber. A liquid-vapor pipeline 5 and a feed inlet 301 communicating with the centrifugal chamber are installed on the housing 3. The liquid-vapor pipeline 5 includes a liquid flow pipeline 501 and a steam pipeline 502, which are separately arranged or share a common outlet. By setting the liquid-vapor pipeline 5, part of the water washing is replaced by steam washing. First, water is introduced into the liquid flow pipeline 501 to wash the xylose mother liquor. Then, steam is introduced into the steam pipeline 502. The steam can carry away the impurities on the xylose particles and at the same time prevent the xylose particles from being carried into the xylose mother liquor, improving the yield and purity of xylose. If a common outlet is shared, space can be saved. If they are separately arranged, it is convenient to control.

[0024] In one embodiment, the steam pipeline 502 extends into the bottom of the centrifugal chamber, which can ensure that when the xylose mother liquor throws out the xylose particles, all the xylose particles can be washed with steam.

[0025] Preferably, a number of small holes are opened on the steam pipeline 502 to facilitate the steam to come out from the small holes. Here, the small holes can be evenly distributed on the steam pipeline 502. The shape of the small holes can be circular, square, rectangular, triangular, etc. Preferably, it is circular. The size of the small holes only needs to be larger than the size of the steam.

[0026] In one embodiment, a feed inlet 301 is installed at the top of the housing 3. A discharge outlet 303 and a liquid outlet 302 are installed at the bottom of the housing 3. For example, the housing 3 includes a top cover and a cover body, which can be integrally formed or connected by fasteners. The fasteners include bolts. Preferably, a feed inlet 301 is installed at the top of the top cover. A discharge outlet 303 and a liquid outlet 302 are installed at the bottom of the cover body.

[0027] In one embodiment, liquid passing holes 401 are formed in the side wall of the rotary drum 4, so that xylose mother liquor can be separated into xylose particles and liquid during rotation. The housing 3 is provided with a liquid outlet 302, and the liquid passing holes 401 communicate with the liquid outlet 302. A filtrate water outlet nozzle may be provided on the liquid passing holes 401. Here, the size of the filtrate water outlet nozzle may be smaller than the size of the xylose particles, so that the xylose particles remain in the rotary drum 4 and the liquid flows out of the rotary drum 4. The filtrate water outlet nozzle may be any one of a cock water nozzle, a ball valve water nozzle, a water nozzle with a switch, an elbow water nozzle, and a special-shaped water nozzle. For example, the shape of the filtrate water outlet nozzle may be circular, square, rectangular, triangular, etc.

[0028] Preferably, the steam pipeline 502 is arranged at one end close to the liquid passing holes 401, and the liquid flow pipeline 501 is arranged at one end far from the liquid passing holes 401. The feed inlet 301 is arranged close to the liquid flow pipeline 501. That is to say, the feed inlet 301 is close to the liquid flow pipeline 501, which is convenient for the xylose mother liquor in the feed inlet 301 to be washed with water through the liquid flow pipeline 501. One end of the steam pipeline 502 close to the liquid passing holes 401 can facilitate re-steam cleaning when the xylose mother liquor is thrown out, so as to achieve the purpose of high purity, high yield and less water consumption of the xylose particles.

[0029] In one embodiment, an aggregate hopper 6 is arranged below the rotary drum 4. The aggregate hopper 6 communicates with the discharge port 303 on the housing 3, and the discharge port 303 is placed directly below the rotary drum 4. The aggregate hopper 6 can be a funnel. Since the aggregate hopper 6 and the liquid outlet 302 are placed at different positions, it is ensured that the separated liquid and xylose particles will not be mixed together again. Preferably, the liquid outlet 302 has a certain distance from the rotary drum 4, which can ensure that the liquid can be discharged smoothly. The discharge port 303 has a certain distance from the rotary drum 4, which can ensure that the xylose particles can be discharged smoothly.

[0030] In one embodiment, since the temperature of the xylose liquid is higher than room temperature when it enters the housing 3, a cold jacket 7 is arranged outside the housing 3 to cool the centrifuge and prevent the centrifuge from overheating. A refrigerant can be loaded into the cold jacket 7, so a refrigerant inlet pipe 701 and a refrigerant outlet pipe 702 are provided. The refrigerant inlet pipe 701 and the refrigerant outlet pipe 702 are arranged on both sides of the cold jacket 7, and the refrigerant inlet pipe 701 and the refrigerant outlet pipe 702 communicate. Specifically, the refrigerant inlet pipe 701 is located at the upper part of the cold jacket 7, and the refrigerant outlet pipe 702 is located at the lower part of the cold jacket 7.

[0031] In one embodiment, a buffer plate 8 (also known as a distributor) is provided below the feed inlet 301 in the centrifugation chamber to prevent the xylose mother liquor from falling directly to the discharge outlet 303 without being washed with water. Preferably, the width of the buffer plate 8 is greater than the distance between the feed inlet 301 and the liquid flow pipe 501. In this way, the xylose mother liquor and water first fall onto the buffer plate 8, enabling the xylose mother liquor and water to be fully washed with water, ultimately improving the purity of the xylose particles. At the same time, the slow falling of the xylose mother liquor can ensure sufficient steam washing.

[0032] In one implementation, the housing 3 further includes a lifting lug 9, which is provided at the top of the housing 3 and is used for hoisting the centrifuge.

[0033] In one embodiment, the drive device 1 includes a motor 101, and the motor 101 is arranged outside the housing 3 outside the drum 4. The motor 101 starts the drum 4.

[0034] In one embodiment, the transmission mechanism 2 includes a rotating shaft 201, a speed reducer 202, and a bushing. The rotating shaft 201 is connected to the drum 4. Specifically, one end of the rotating shaft 201 is connected to the motor 101 and the speed reducer 202, and the other end is connected to the bushing. The centrifuge further includes a drum support 10, and a bushing is installed on the upper part of the drum support 10. The bottom of the drum support 10 is fixed to the rotating shaft 201 with a locking nut 13, thereby ensuring that the transmission shaft does not shift and is firmly fixed. The centrifuge further includes a drum positioning liquid rack 11, which is used to separate the xylose particles and the liquid and ensure that the drum 4 does not fall. Therefore, one end of the drum positioning liquid rack 11 needs to be fixed to the bottom of the drum support 10, and the other end is fixed to the bottom of the housing 3.

[0035] In one embodiment, the centrifuge further includes a coupling 12, which can ensure that the centrifuge can adapt to the relative offset of the rotating shaft 201 during operation.

[0036] In one embodiment, the centrifuge further includes a motor support 14, and the motor support 14 is arranged outside the drum 4, which can protect the centrifuge from being damaged by external forces such as earthquakes. The speed reducer 202 and the motor 101 are arranged on the top of the motor support 14, and the speed reducer 202 and the motor 101 can be fixedly placed.

[0037] In one embodiment, the centrifuge further includes a support reinforcement 15, which is used to reinforce the motor support 14 and prevent the motor support 14 from shaking. Here, the support reinforcement 15 can be a tripod reinforcement steel.

[0038] In one embodiment, the centrifuge further includes a housing reinforcement 16, and the housing reinforcement 16 is arranged at the bottom of the housing 3 and is used to reinforce the housing.

[0039] In one embodiment, the xylose washing centrifuge is placed in a pit, which can increase safety. At the same time, the equipment is lifted by the lifting lug 9, which is convenient for taking out the xylose particles.

[0040] In this article, specific examples are used to elaborate on the principles and implementation modes of this application. The description of the above embodiments is only used to help understand the technical solution and its core idea of this application; those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A xylose water-washing centrifuge, comprising a driving device, a transmission mechanism, a drum, and a housing outside the drum. The inside of the drum is a centrifugal chamber, and it is characterized in that: A liquid-vapor pipeline and a feed inlet communicating with the centrifugal chamber are installed on the housing; the liquid-vapor pipeline includes a liquid flow pipeline and a steam pipeline, which are separately arranged or share an outlet.

2. The xylose water-washing centrifuge according to claim 1, wherein: A number of small holes are provided on the steam pipeline.

3. The xylose water-washing centrifuge according to claim 1, wherein: Liquid passing holes are provided on the side wall of the drum, and a liquid outlet is provided on the housing, and the liquid passing holes are communicated with the liquid outlet.

4. The xylose washing centrifuge according to claim 1, wherein: An aggregate hopper is arranged below the drum, and the aggregate hopper is communicated with the discharge port on the housing.

5. The xylose washing centrifuge according to claim 1, wherein: A cold jacket is arranged outside the housing.

6. The xylose water-washing centrifuge according to claim 5, wherein: A refrigerant inlet pipe and a refrigerant outlet pipe are arranged outside the cold jacket, and the refrigerant inlet pipe is communicated with the refrigerant outlet pipe.

7. The xylose water-washing centrifuge according to claim 1, characterized in that: A buffer plate is arranged below the feed inlet in the centrifugal chamber.

8. The xylose water-washing centrifuge according to claim 1, wherein: The steam pipeline extends into the bottom of the centrifugal chamber.

9. The xylose water-washing centrifuge according to claim 1, wherein: The driving device includes a motor, which is arranged outside the housing outside the drum.

10. The xylose water-washing centrifuge according to claim 9, characterized in that: The transmission mechanism includes a reducer, a rotating shaft and a shaft sleeve, and the rotating shaft is connected to the drum.

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