An MVR evaporation device

Abstract

This utility model discloses an MVR evaporation device, relating to the field of evaporation device technology. It addresses the problem in existing evaporation devices that lack a filtration mechanism, leading to the accumulation of impurities carried in the raw material liquid within the evaporator and affecting evaporation efficiency. A separation box is located on one side of the evaporator body. An inlet is located on the side of the separation box away from the evaporator body, and a slag discharge port is located on the side of the separation box adjacent to the evaporator body. A tubular filter screen is fixedly connected inside the separation box between the inlet and the slag discharge port. The tubular filter screen has rotating spiral pushing blades. A slag collection box is fixedly connected to the outside of the slag discharge port of the separation box, and a sludge storage tank is connected to the lower end of the slag collection box. By installing a separation box with a tubular filter screen at the front end of the evaporator, solid impurities in the raw material liquid can be effectively filtered, preventing impurities from accumulating inside the evaporator body, significantly improving evaporation efficiency and equipment operational stability.

Description

Technical Field

[0001] This utility model relates to the field of evaporation device technology, specifically an MVR evaporation device. Background Technology

[0002] MVR (Mechanical Vapor Recompression) evaporation units are highly efficient and energy-saving evaporation and concentration equipment. They recover the latent heat of secondary steam through mechanical heat pump technology, significantly reducing energy consumption. The core principle is to pressurize and heat the low-temperature, low-pressure secondary steam generated in the evaporator using a compressor, then return it to the heating chamber as a heat source, replacing traditional live steam and achieving heat energy recycling. The system mainly consists of an evaporator, compressor, heat exchanger, separator, and control system, and is suitable for solution concentration, crystallization, or wastewater treatment in industries such as chemical, food, pharmaceutical, and environmental protection.

[0003] For example, application publication number CN204261367U discloses an MVR evaporation device, including a pre-evaporator, an evaporator crystallizer, a first compressor, and a second compressor. The inlet and outlet of the first compressor are connected to the secondary steam outlet and inlet of the pre-evaporator, respectively, and the second compressor is located on the secondary steam circuit of the evaporator crystallizer. Because the concentration in the separator crystallizer is high, the required temperature rise after compression of the secondary steam is also relatively high. In this invention, the secondary steam undergoes pressure division, allowing the secondary steam entering the separator crystallizer to be compressed separately by the second compressor, while the pre-concentrated secondary steam is compressed and heated by the first compressor. Compared to the steam entering a single compressor at full pressure, this significantly reduces the flow rate and temperature rise requirements of the compressor, thereby reducing costs and operating energy consumption. This invention is suitable for the concentration and evaporation of high-volume, high-boiling-point liquids.

[0004] Since the raw material liquid carries some impurities before entering the evaporator, and the evaporation device in the above technology does not have a filtration mechanism, the impurities accumulate inside the evaporator, affecting the evaporation efficiency; therefore, the market urgently needs to develop an MVR evaporation device to help people solve the existing problems. Utility Model Content

[0005] The purpose of this invention is to provide an MVR evaporation device to solve the problem mentioned in the background art that, since the raw material liquid carries some impurities before entering the evaporator, the existing evaporation device does not have a filtration mechanism, which causes impurities to accumulate inside the evaporator and affect the evaporation efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an MVR evaporation device, comprising an evaporator body, a separation box provided on one side of the evaporator body, an inlet provided on the end face of the separation box away from the evaporator body, a slag discharge port provided on the side of the separation box adjacent to the evaporator body, a tubular filter screen fixedly connected inside the separation box between the inlet and the slag discharge port, a spiral pushing blade rotatably provided inside the tubular filter screen, a slag collection box fixedly connected to the outside of the slag discharge port of the separation box, and a sludge storage box connected to the lower end of the slag collection box.

[0007] Preferably, a trapezoidal guide channel is provided at the lower end of the separation box, and a liquid outlet pipe is fixedly connected to the middle of the lower end of the separation box. The upper end of the evaporator body is connected to the liquid outlet pipe through a liquid inlet pipe, and a delivery pump is fixedly installed on the liquid inlet pipe.

[0008] Preferably, a support ring is fixedly connected to the middle of the inlet, and a rotating shaft is fixedly connected to the middle of the spiral pusher blade, with one end of the rotating shaft inserted into the support ring.

[0009] Preferably, a drive device is fixedly connected to the end face of the slag collection box away from the separation box, and a drive motor is fixedly installed inside the drive device.

[0010] Preferably, the other end of the rotating shaft passes through the slag collection box and extends into the drive unit, where it is connected to the output shaft of the drive motor via a reducer.

[0011] Preferably, the slag discharge port is connected to the inside of the slag collection box, the lower end of the slag collection box is connected to the sludge storage box, and the lower end of the slag collection box and the sludge storage box are fixedly connected by multiple bolts.

[0012] Preferably, a drain pipe is fixedly connected to the lower end of one side of the sludge storage tank, and a control valve is fixedly connected to the drain pipe.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) In this utility model, by setting a separation box with a tubular filter screen at the front end of the evaporator, solid impurities in the raw material liquid can be effectively filtered, preventing impurities from entering the evaporator body and accumulating, which significantly improves the evaporation efficiency and the stability of equipment operation.

[0015] (2) In this utility model, a structural design is adopted that combines spiral push blades with tubular filter screen. The spiral push blades are driven to rotate by a drive motor, which realizes the self-cleaning function of the filter screen, avoids the problem of easy clogging of traditional filter devices, and greatly reduces the frequency of manual cleaning and maintenance costs.

[0016] (3) In this utility model, the combination design of the slag collection box and the detachable sludge storage box realizes the automatic collection and convenient cleaning of impurities. The setting of the sewage pipe and control valve further simplifies the sewage discharge operation, making the whole system more environmentally friendly and efficient. Attached Figure Description

[0017] Figure 1 This is a front view of an MVR evaporation device according to the present invention;

[0018] Figure 2 This is a schematic diagram of the separation box structure of this utility model;

[0019] Figure 3 This is a front sectional view of the separation box of this utility model;

[0020] Figure 4 This is a side sectional view of the separation box of this utility model.

[0021] In the diagram: 1. Evaporator body; 101. Liquid inlet pipe; 102. Transfer pump; 2. Separation tank; 201. Liquid inlet; 202. Support ring; 203. Slag discharge port; 204. Trapezoidal guide channel; 205. Liquid outlet pipe; 206. Tubular filter screen; 3. Spiral pusher blades; 301. Rotating shaft; 4. Slag collection box; 401. Sludge storage box; 402. Sludge discharge pipe; 403. Control valve; 5. Drive device; 501. Drive motor. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Please see Figure 1-4 This utility model provides an embodiment of an MVR evaporation device, comprising an evaporator body 1, a separation box 2 disposed on one side of the evaporator body 1, an inlet 201 disposed on the end face of the separation box 2 away from the evaporator body 1, and a slag discharge port 203 disposed on the side of the separation box 2 adjacent to the evaporator body 1. A tubular filter screen 206 is fixedly connected inside the separation box 2 between the inlet 201 and the slag discharge port 203. A spiral pushing blade 3 is rotatably disposed inside the tubular filter screen 206. A slag collection box 4 is fixedly connected to the outside of the slag discharge port 203 of the separation box 2. A sludge storage box 401 is connected to the lower end of the slag collection box 4. The lower end of the evaporator body 1 is provided with a trapezoidal guide channel 204. The middle of the lower end of the separation box 2 is fixedly connected to the liquid outlet pipe 205. The upper end of the evaporator body 1 is connected to the liquid outlet pipe 205 through the liquid inlet pipe 101. The liquid inlet pipe 101 is fixedly provided with a delivery pump 102. The raw material liquid is first introduced into the tubular filter screen 206 through the liquid inlet 201. After being filtered by the tubular filter screen 206, the raw material liquid falls into the trapezoidal guide channel 204 and is guided to the liquid outlet pipe 205. The delivery pump 102 delivers the filtered raw material liquid to the evaporator body 1, which can effectively filter solid impurities in the raw material liquid and prevent impurities from entering the evaporator body 1 and accumulating.

[0024] Please see Figure 3 A support ring 202 is fixedly connected to the middle of the inlet 201, and a rotating shaft 301 is fixedly connected to the middle of the spiral pusher blade 3. One end of the rotating shaft 301 is inserted into the support ring 202. A drive device 5 is fixedly connected to the end face of the slag collection box 4 away from the separation box 2. A drive motor 501 is fixedly installed inside the drive device 5. The other end of the rotating shaft 301 passes through the slag collection box 4 and extends into the drive device 5, and is connected to the output shaft of the drive motor 501 through a reducer. The drive motor 501 drives the rotating shaft 301 to rotate slowly, which in turn drives the spiral pusher blade 3 to rotate slowly. The edge of the spiral pusher blade 3 scrapes the impurities on the inner wall of the tubular filter screen 206 and conveys them to the slag discharge port 203, effectively preventing the tubular filter screen 206 from clogging. This achieves the self-cleaning function of the tubular filter screen 206, avoids the problem of easy clogging of traditional filter devices, and greatly reduces the frequency of manual cleaning and maintenance costs.

[0025] Please see Figure 3 The slag discharge port 203 is connected to the inside of the slag collection box 4. The lower end of the slag collection box 4 is connected to the sludge storage box 401. The lower end of the slag collection box 4 and the sludge storage box 401 are fixedly connected by multiple bolts. A sludge discharge pipe 402 is fixedly connected to the lower end of one side of the sludge storage box 401. A control valve 403 is fixedly connected to the sludge discharge pipe 402. After impurities enter the slag collection box 4 through the slag discharge port 203, they fall into the sludge storage box 401 for collection. The impurities are discharged through the sludge discharge pipe 402 by opening the control valve 403. Alternatively, the lower end of the slag collection box 4 can be separated from the sludge storage box 401 by removing the bolts to clean the inside of the sludge storage box 401.

[0026] Working Principle: During operation, the raw material liquid enters the tubular filter screen 206 inside the separation tank 2 through the inlet 201. Under the slow rotation of the spiral pusher blades 3, the raw material liquid flows along the inner wall of the tubular filter screen 206 and is filtered through the mesh. The filtered clean liquid is collected through the trapezoidal guide channel 204 to the outlet pipe 205, and then pumped by the transfer pump 102 into the evaporator body 1 through the inlet pipe 101 for evaporation. At the same time, the drive motor 501 drives the spiral pusher blades 3 to rotate continuously through the rotating shaft 301. The edges of the blades continuously scrape off the impurities attached to the inner wall of the tubular filter screen 206 and push the impurities towards the slag discharge port 203. The separated impurities fall into the slag collection box 4 through the slag discharge port 203 and then enter the sludge storage tank 401 for temporary storage. They are periodically discharged through the drain pipe 402 by opening the control valve 403, or the sludge storage tank 401 is disassembled for thorough cleaning.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An MVR evaporation apparatus comprising an evaporator body (1), characterized in that: A separation box (2) is provided on one side of the evaporator body (1). A liquid inlet (201) is provided on the end face of the separation box (2) away from the evaporator body (1). A slag discharge port (203) is provided on the side of the separation box (2) adjacent to the evaporator body (1). A tubular filter screen (206) is fixedly connected inside the separation box (2) between the liquid inlet (201) and the slag discharge port (203). A spiral pusher blade (3) is rotatably provided inside the tubular filter screen (206). A slag collection box (4) is fixedly connected to the outside of the slag discharge port (203) of the separation box (2). A sludge storage box (401) is connected to the lower end of the slag collection box (4).

2. The MVR evaporation apparatus according to claim 1, characterized in that: The lower end of the separation box (2) is provided with a trapezoidal guide groove (204), and the middle of the lower end of the separation box (2) is fixedly connected with a liquid outlet pipe (205). The upper end of the evaporator body (1) is connected to the liquid outlet pipe (205) through a liquid inlet pipe (101), and a delivery pump (102) is fixedly installed on the liquid inlet pipe (101).

3. The MVR evaporation apparatus according to claim 1, characterized in that: A support ring (202) is fixedly connected to the middle of the inlet (201), and a rotating shaft (301) is fixedly connected to the middle of the spiral pusher blade (3). One end of the rotating shaft (301) is inserted into the support ring (202).

4. The MVR evaporation apparatus according to claim 3, characterized in that: The slag collection box (4) is fixedly connected to a drive device (5) on the side face away from the separation box (2), and a drive motor (501) is fixedly installed inside the drive device (5).

5. The MVR evaporation apparatus according to claim 4, characterized in that: The other end of the rotating shaft (301) passes through the slag collection box (4) and extends into the drive device (5), and is connected to the output shaft of the drive motor (501) through a reducer.

6. The MVR evaporation apparatus according to claim 1, characterized in that: The slag discharge port (203) is connected to the inside of the slag collection box (4), the lower end of the slag collection box (4) is connected to the sludge storage box (401), and the lower end of the slag collection box (4) and the sludge storage box (401) are fixedly connected by multiple bolts.

7. The MVR evaporation apparatus according to claim 1, characterized in that: A drain pipe (402) is fixedly connected to the lower end of one side of the sludge storage tank (401), and a control valve (403) is fixedly connected to the drain pipe (402).

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