A residual liquid discharge device for a multi-effect distilled water machine

Abstract

The present invention is applicable to the technical field of water treatment, and provides a residual liquid discharge device of a multi-effect distilled water machine, wherein the residual liquid discharge device comprises: a residual liquid treatment box, a residual liquid interface is arranged on the top of the residual liquid treatment box, the residual liquid interface is connected with the residual liquid discharge port at the bottom of the distillation tank, a filter plate is arranged obliquely in the residual liquid treatment box, and the filter plate is located at the bottom end of the residual liquid interface; and a plate member and a sealing member, wherein the plate member is arranged in the residual liquid treatment box in a lattice structure, and cooperates with the sealing members arranged on the first surface and the second surface of the residual liquid treatment box to divide the bottom of the residual liquid treatment box into a stepped overflow area close to the first surface and a short-range precipitation area close to the second surface; during the production process of distilled water by the multi-effect distilled water machine, the present invention can timely treat a large amount of residual liquid after distillation, reduce the pure water produced in the previous step from being mixed again into the residual liquid in the next step, and improve the quality of the final product.

Description

Technical Field

[0001] The invention belongs to the technical field of water treatment, and in particular relates to a residual liquid discharge device of a multi-effect distilled water machine. Background Art

[0002] The multi-effect distilled water machine is a device used to purify water. It is widely used in the production process of medicine, chemical industry and other fields. It is mainly used to prepare high-purity water, pure distilled water, water for injection, etc. The working principle of the multi-effect distilled water machine is mainly based on the principle of multiple distillation: the raw water is first preheated by the heat exchanger, and then enters each effect separator and is heated by the industrial steam in the first effect separator. The heated water is evenly distributed into the evaporation tubes through the water distribution device at the top of the first effect separator, forming a thin film of water flow. These water flows evaporate quickly because of their thinness, producing secondary steam. The unevaporated raw water is transported to the next effect as the raw water of the secondary effect separator, and this is repeated until the last effect. The evaporated raw water (i.e., secondary steam) spirals up in the separator, and enters the pure steam pipeline after passing through a special separation device, serving as the heat source of the secondary effect separator. The secondary steam is condensed into distilled water after absorbing heat in the secondary effect separator. The distilled water from each effect and the secondary steam from the last effect are collected by the condenser and cooled to become distilled water. The qualified distilled water is output as injection water after online conductivity detection, and the unqualified distilled water is discharged.

[0003] However, the existing distillation machines on the market cannot handle a large amount of residual liquid in time after distillation, which pollutes the distillation equipment. This causes the pure water produced in the previous step to mix again with the residual liquid in the next step after multiple distillation processes, thus affecting the quality of the final product. Further improvements are necessary. Summary of the invention

[0004] The object of the present invention is to provide a residual liquid discharge device for a multi-effect distilled water machine, aiming to solve at least one problem mentioned in the background technology.

[0005] The present invention is implemented as follows: a residual liquid discharge device of a multiple-effect distilled water machine is used to process the residual liquid of the multiple-effect distilled water machine, the multiple-effect distilled water machine includes a separator and a heat exchanger composed of a distillation tank, and the residual liquid discharge device includes:

[0006] A residual liquid treatment box, wherein a residual liquid interface is arranged on the top of the residual liquid treatment box, the residual liquid interface is connected to the residual liquid discharge port at the bottom of the distillation tank, and a filter plate is arranged obliquely in the residual liquid treatment box, and the filter plate is located at the bottom end of the residual liquid interface;

[0007] And, plates and seals, wherein the plates are arranged in a lattice structure in the residual liquid treatment box, and cooperate with the seals arranged on the first surface and the second surface of the residual liquid treatment box to divide the inner bottom of the residual liquid treatment box into a stepped overflow area close to the first surface and a short-range sedimentation area close to the second surface; the stepped overflow area is used to classify the residual liquid flowing down through the filter plate, and the short-range sedimentation area is used to precipitate impurities intercepted by the filter plate.

[0008] Furthermore, the number of the residual liquid interfaces and the number of the distillation tanks are the same.

[0009] Furthermore, the distillation tank is provided with an industrial steam inlet, a raw liquid inlet, an industrial steam outlet, and a multi-effect interface. The distillation tank is provided with multiple ones, wherein the industrial steam inlet of one of the distillation tanks is connected to the industrial steam pipeline, and the remaining distillation tanks are connected in series through their industrial steam outlets and industrial steam inlets, the raw liquid inlet of one of the distillation tanks is connected to the raw liquid pipeline, and the remaining distillation tanks are connected in series through the multi-effect interfaces at their bottom and top ends, and the multi-effect interface at the bottom of the last distillation tank serves as a distilled water outlet.

[0010] Furthermore, a guide plate is obliquely arranged between the top wall of the residual liquid treatment box and the filter plate, the top end of the guide plate is located at the bottom end of the residual liquid interface, and the bottom end of the guide plate is located at the top end of the filter plate.

[0011] Furthermore, a negative ion generator is arranged on the back side of the guide plate, and the diffusion direction of the negative ion generator is toward the filter plate.

[0012] Furthermore, an intermediate connecting piece is arranged in the middle of the inner bottom of the residual liquid treatment box, and the filter plate is arranged on the intermediate connecting piece.

[0013] Furthermore, at least two of the plate members are vertically arranged between the intermediate connecting member and the sealing member located on the first surface, and the top heights of the plate members decrease in steps to form a stepped overflow area.

[0014] Furthermore, a short-range partition is arranged in parallel between the intermediate connecting member and the sealing member located on the second surface, and at least two plates are also arranged vertically between the short-range partition and the intermediate connecting member. The top heights of the plates are equal to form a short-range precipitation area.

[0015] Furthermore, the top height of the short-distance partition is lower than the top height of the plate, and encloses a rear reflow zone with the side wall of the residual liquid treatment box.

[0016] Furthermore, one of the distillation tanks is provided with an expansion interface, and the last stage of the stepped overflow area is provided with a recovery pipeline, which is connected to the expansion interface.

[0017] The present invention provides a residual liquid discharge device for a multiple-effect distilled water machine, in which the residual liquid discharge port of each distillation tank is connected to a residual liquid interface. During the production process of distilled water by the multiple-effect distilled water machine, a large amount of residual liquid after distillation can be processed in time, reducing the pure water produced in the previous step from being mixed again into the residual liquid in the next step, thereby improving the quality of the final product and the quality of water used. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A first structural schematic diagram of a residual liquid discharge device of a multi-effect distilled water machine provided in an embodiment of the present invention;

[0019] Figure 2 A second structural schematic diagram of a residual liquid discharge device of a multi-effect distilled water machine provided in an embodiment of the present invention;

[0020] Figure 3 It is a structural schematic diagram of the residual liquid processing structure in an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the first internal structure of the residual liquid treatment box in an embodiment of the present invention;

[0022] Figure 5 Schematic diagram of the second internal structure of the residual liquid treatment box in the embodiment of the present invention;

[0023] Figure 6 A third internal structure schematic diagram of the residual liquid treatment box in an embodiment of the present invention;

[0024] Figure 7 Schematic diagram of the fourth internal structure of the residual liquid treatment box in an embodiment of the present invention.

[0025] In the attached drawings: 100-distillation tank; 110-industrial steam inlet; 120-raw liquid inlet pipe; 130-industrial steam outlet; 140-distilled water output pipe; 150-residual liquid discharge pipe; 160-multi-effect interface; 200-heat exchanger; 300-residual liquid discharge device; 301-residual liquid treatment box; 302-sealing plate; 303-first effect residual liquid interface; 304-second effect residual liquid interface; 305-third effect residual liquid interface; 306-guide plate; 307-filter plate; 308-overflow plate; 309-recovery pipeline; 310-first interface; 311-second interface; 312-inner branch pipe; 313-integrated chamber; 314-negative ion generator; 315-short-range precipitation chamber; 316-reflux area; 317-return water interface; 318-partition. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0027] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0028] like Figure 1-Figure 7 As shown, in one embodiment, a residual liquid discharge device of a multiple-effect distilled water machine can be used to process the residual liquid of the multiple-effect distilled water machine, wherein the multiple-effect distilled water machine includes a separator composed of a distillation tank 100 and a heat exchanger 200, the distillation tank 100 is used as a separator to separate the original liquid into gas and liquid, and then cooperates with the cooling of the heat exchanger 200, so that the distilled water of each effect and the secondary steam of the last effect are collected by the heat exchanger 200, and are cooled to become distilled water, and the distilled water obtained by the multiple-effect distillation can be used as water for injection; it should be noted that the separator and the heat exchanger 200 of this embodiment are both prior art;

[0029] In this embodiment, the residual liquid discharge device 300 includes:

[0030] A residual liquid treatment box 301, a residual liquid interface is provided on the top of the residual liquid treatment box 301, the residual liquid interface is connected to the residual liquid discharge port at the bottom of the distillation tank 100, and a filter plate 307 is obliquely provided in the residual liquid treatment box 301, and the filter plate 307 is located at the bottom end of the residual liquid interface;

[0031] And, plates and seals, the plates are arranged in the residual liquid treatment box 301 in a lattice structure, and cooperate with the seals arranged on the first surface and the second surface of the residual liquid treatment box 301 to divide the inner bottom of the residual liquid treatment box into a stepped overflow area close to the first surface and a short-range sedimentation area close to the second surface; the stepped overflow area is used to classify the residual liquid flowing through the filter plate 307, and the short-range sedimentation area is used to precipitate impurities intercepted by the filter plate 307.

[0032] In one example of this embodiment, the sealing member includes a sealing plate 302 and a sealing ring disposed on the sealing plate 302. The sealing plate 302 is used to seal the first surface and the second surface (i.e. Figure 3 The sealing ring is tightly fitted at the connection between the residual liquid treatment box 301 and the sealing plate 302.

[0033] In one example of this embodiment, the number of the residual liquid interfaces and the distillation tanks 100 is the same;

[0034] For example, if there are three distillation tanks 100 , the residual liquid interfaces are the first effect residual liquid interface 303 , the second effect residual liquid interface 304 , and the third effect residual liquid interface 305 ; the residual liquid discharge port at the bottom of the distillation tank 100 is connected to the residual liquid interfaces through the residual liquid discharge pipe 150 .

[0035] In an example of the present embodiment, the distillation tank 100 is provided with an industrial steam inlet 110, a raw liquid inlet, an industrial steam outlet 130, and a multi-effect interface 160. The distillation tank 100 is provided with multiple ones, wherein the industrial steam inlet 110 of one of the distillation tanks 100 is connected to the industrial steam pipeline, and the remaining distillation tanks 100 are connected in series through their industrial steam outlets 130 and industrial steam inlets 110, wherein the raw liquid inlet of one of the distillation tanks 100 is connected to the raw liquid pipeline, and the remaining distillation tanks 100 are connected in series through the multi-effect interfaces 160 at the bottom and top ends thereof, and the multi-effect interface 160 at the bottom of the last distillation tank 100 serves as a distilled water outlet.

[0036] In this example, the raw liquid inlet is connected to a raw liquid water inlet pipe 120, and the raw liquid pipeline is connected through the raw liquid water inlet pipe 120;

[0037] Generally, the raw liquid pipeline can be the output pipeline of a purified water machine; purified water is used as the raw liquid.

[0038] In this example, the distilled water outlet is connected to a distilled water output pipe 140 , and the distilled water output by the distilled water output pipe 140 can be used as water for injection.

[0039] In one example of this embodiment, the industrial steam inlet 110, the raw liquid inlet, the industrial steam outlet 130, the multi-effect interface 160, etc. are provided with control valves; and the raw liquid water inlet pipe 120, the distilled water output pipe 140, etc. are provided with control valves.

[0040] In an example of this embodiment, four, five, six, etc. distillation tanks 100 are provided. The specific number can be set as needed and will not be described in detail here.

[0041] In one example of the present embodiment, the length of the multi-effect interface 160 extending into the distillation tank 100 is greater than the length of the residual liquid discharge port extending into the distillation tank 100. In this way, impurities or precipitates generated by separation in the distillation tank 100 can better enter the residual liquid discharge port and have a lower probability of passing through the multi-effect interface 160.

[0042] In this embodiment, a residual liquid discharge device of a multi-effect distilled water machine can be used in the pharmaceutical industry, for example, in processes such as drug preparation, water for injection, sterilization, washing and purification.

[0043] The specific product parameters of the multi-effect distilled water machine involved vary depending on the model and specifications, but generally include the following aspects: Product material: water-related parts are mostly made of SS316L stainless steel, and other parts are made of 304 stainless steel; Product model: such as 50L, 100L, 150L, ​​200L, 300L, 500L, 1000L, etc., usually four-effect or five-effect distillation. Equipment composition: including multiple preheaters, condensers, evaporators and automatic control systems, etc. Evaporation tower (i.e. distillation tank) size: such as diameter 159mm × height 2200mm, etc. Distilled water output: such as 300L / h, etc. Purified water consumption: such as 330L / h, etc.

[0044] In an example of this embodiment, the filter plate 307 is integrated with one or more layers of filter elements, and the specifications of the filter elements can be set as needed and are not specifically limited here.

[0045] In one example of this embodiment, one or more layers of filter elements are detachably mounted on the frame of the filter plate 307, and can be easily removed or replaced when the filter elements need to be replaced or cleaned.

[0046] In an example of this embodiment, a guide plate 306 is obliquely arranged between the top wall of the residual liquid treatment box 301 and the filter plate 307, the top end of the guide plate 306 is located at the bottom end of the residual liquid interface, and the bottom end of the guide plate 306 is located at the top end of the filter plate 307.

[0047] Among them, the guide plate 306 is mainly used to transfer the residual liquid delivered by the residual liquid interface to the filter plate 307;

[0048] In an example of this embodiment, a diverging groove is provided on the upper surface of the guide plate 306, and the residual liquid is dispersed through the diverging groove.

[0049] In one example of this embodiment, a groove is provided at the bottom of the guide plate 306, and the groove can collect impurities or sediments directed to the guide plate 306 for subsequent separation without entering the filtering process of the filter plate.

[0050] In an example of this embodiment, a partition 318 is provided on the upper surface of the guide plate 306, and the guide plate 306 is separated by the partition 318 to correspond to the residual liquid interface.

[0051] like Figure 4 , Figure 5 As shown, in one embodiment, a negative ion generator 314 is disposed on the back of the guide plate 306 , and the diffusion direction of the negative ion generator 314 is toward the filter plate 307 .

[0052] In an example of this embodiment, the negative ion generator 314 can disturb the residual liquid flowing through the filter plate 307 to improve the filtering efficiency of the filter plate 307.

[0053] In addition, the negative ion generator 314 can generate a certain amount of negative ions, which have the effect of adsorption and sterilization, and avoid the risk of bacterial invasion caused by the failure of the sealing of the residual liquid treatment box 301.

[0054] In an example of this embodiment, a first interface 310 is provided on the side wall of the residual liquid treatment box 301. The first interface 310 is used as an electrical connection interface for threading the negative ion generator 314. The first interface 310 can be sealed.

[0055] In one embodiment, an intermediate connecting piece is disposed in the middle of the inner bottom of the residual liquid treatment box 301, and the filter plate 307 is disposed on the intermediate connecting piece.

[0056] In this embodiment, the intermediate connecting member may be made of a stainless steel plate, an aluminum alloy plate, etc. In addition, the plate member may also be made of the same material as the intermediate connecting member.

[0057] In an example of this embodiment, taking three residual liquid interfaces as an example, two plates are vertically arranged between the middle connecting member and the sealing member located on the first surface;

[0058] In this case, the plate there can be used as an overflow plate 308 .

[0059] In one example of this embodiment, at least two of the plates are vertically arranged between the intermediate connecting member and the sealing member located on the first surface, and the top heights of the plates decrease in steps to form a stepped overflow area;

[0060] For example, when there are four residual liquid interfaces, the number of the plates is set to three, and four stepped overflow areas are divided.

[0061] In an example of this embodiment, a recovery pipeline 309 is set in part or all of the step overflow area. The recovery pipeline 309 includes a water pump and a diving pipe. The water pump is set at a specified diving depth in the step overflow area; the diving pipe is connected to the outlet of the water pump and the raw liquid pipeline.

[0062] like Figure 4 , Figure 5 As shown, in one embodiment, a short-range partition is arranged in parallel between the intermediate connecting member and the sealing member located on the second surface, and at least two plates are also vertically arranged between the short-range partition and the intermediate connecting member, and the top heights of the plates are equal to form a short-range precipitation area.

[0063] In an example of the present embodiment, the short-range sedimentation area includes three short-range sedimentation chambers 315, the residual liquid interface is connected to the internal branch pipe 312, and all the internal branch pipes 312 are connected to an integrated cavity 313; one side of the integrated cavity 313 is provided with an inlet and outlet pipe, and the inlet and outlet pipe is connected to the second interface 311, and the second interface 311 is arranged on the side wall of the residual liquid treatment box; the second interface 311 is connected to a pressure-controlled air pump, and the pressure in the integrated cavity 313 is controlled by the pressure-controlled air pump, thereby controlling whether the residual liquid enters the integrated cavity 313 and controlling the amount of residual liquid entering the integrated cavity 313.

[0064] The residual liquid transported by the residual liquid interface can be diverted and buffered through the internal branch pipe 312 and the integrated cavity 313;

[0065] In an example of this embodiment, a discharge port may be opened at the bottom of the integrated chamber 313, and a regulating valve is provided at the discharge port to control whether the residual liquid is discharged into the short-range sedimentation area.

[0066] like Figure 6 , Figure 7 As shown, in one embodiment, the top height of the short-distance partition is lower than the top height of the plate, and encloses a rear reflow zone 316 with the side wall of the residual liquid treatment box 301 .

[0067] The reflux area 316 can be connected to the recovery pipeline 309 through a pipeline, and can also be connected to the raw liquid pipeline separately.

[0068] For example, a water return interface 317 is provided on the side wall of the recirculation area 316 ; the water return interface 317 is connected to the recovery pipeline 309 through a pipeline.

[0069] In one embodiment, one of the distillation tanks 100 is provided with an expansion interface, and the last stage of the stepped overflow area is provided with a recovery pipeline 309, and the recovery pipeline 309 is connected to the expansion interface;

[0070] Alternatively, the recovery pipeline 309 is connected to the raw liquid pipeline.

[0071] In one embodiment, a visual control area is provided on one of the sealing plates; the visual control area is equipped with conventional control devices such as a monitor or a touch screen, a key switch, a temperature display, a pressure gauge, etc.

[0072] In one example, the touch-sensitive display screen is integrated with a control component.

[0073] For example: the control component can be a programmable controller (PLC controller), which is connected to relevant valves. The PLC controller receives monitored acidity, water pressure information, etc., and processes the information, for example: comparing the acidity and water pressure difference before and after a period of time, and judging whether the corresponding area (step overflow area, short-range sedimentation area) is failed. If so, maintenance is performed.

[0074] The above-mentioned embodiment of the present invention provides a residual liquid discharge device for a multiple-effect distilled water machine, in which the residual liquid discharge port of each distillation tank is connected to a residual liquid interface, and the residual liquid transported by the residual liquid interface is diverted, filtered, precipitated, and processed in the residual liquid processing box 301; in this way, in the production process of distilled water by the multiple-effect distilled water machine, a large amount of residual liquid after distillation can be processed in time, reducing the pure water produced in the previous step from being mixed again into the residual liquid in the next step, thereby improving the quality of the final product and the quality of water used.

[0075] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A residual liquid discharge device for a multiple-effect distilled water machine, used for processing the residual liquid of the multiple-effect distilled water machine, the multiple-effect distilled water machine comprising a separator and a heat exchanger composed of a distillation tank, characterized in that: The residual liquid discharge device comprises: A residual liquid treatment box, wherein a residual liquid interface is arranged on the top of the residual liquid treatment box, the residual liquid interface is connected to the residual liquid discharge port at the bottom of the distillation tank, and a filter plate is arranged obliquely in the residual liquid treatment box, and the filter plate is located at the bottom end of the residual liquid interface; And, a plate and a sealing member, wherein the plate is arranged in a residual liquid treatment box in a lattice structure, and the sealing member is arranged on a first surface and a second surface of the residual liquid treatment box; the plate cooperates with the sealing member arranged on the first surface and the second surface of the residual liquid treatment box to divide the inner bottom of the residual liquid treatment box into a stepped overflow area close to the first surface and a short-range sedimentation area close to the second surface; the stepped overflow area is used to grade the residual liquid flowing down through the filter plate, and the short-range sedimentation area is used to precipitate impurities intercepted by the filter plate; the sealing member includes a sealing plate and a sealing ring arranged on the sealing plate, and the sealing plate is used to seal the first surface and the second surface of the residual liquid treatment box, wherein the first surface is opposite to the second surface; A guide plate is obliquely arranged between the top wall of the residual liquid treatment box and the filter plate, the top end of the guide plate is located at the bottom end of the residual liquid interface, and the bottom end of the guide plate is located at the top end of the filter plate; An intermediate connecting piece is arranged in the middle of the inner bottom of the residual liquid treatment box, and the filter plate is arranged on the intermediate connecting piece; At least two of the plates are vertically arranged between the intermediate connecting member and the sealing member located on the first surface, and the top heights of the plates decrease in steps to form a stepped overflow area; A short-range partition is arranged in parallel between the intermediate connecting member and the sealing member located on the second surface, and at least two plates are also arranged vertically between the short-range partition and the intermediate connecting member, and the top heights of the plates are equal to form a short-range precipitation area; A negative ion generator is arranged on the back of the guide plate, and the diffusion direction of the negative ion generator is toward the filter plate.

2. The residual liquid discharge device of the multi-effect distilled water machine according to claim 1, characterized in that: The number of the residual liquid interfaces and the distillation tanks is the same.

3. The residual liquid discharge device of the multiple-effect distilled water machine according to claim 1, characterized in that: The distillation tank is provided with an industrial steam inlet, a raw liquid inlet, an industrial steam outlet, and a multi-effect interface. The distillation tank is provided with multiple ones, wherein the industrial steam inlet of one of the distillation tanks is connected to the industrial steam pipeline, and the remaining distillation tanks are connected in series through their industrial steam outlets and industrial steam inlets, wherein the raw liquid inlet of one of the distillation tanks is connected to the raw liquid pipeline, and the remaining distillation tanks are connected in series through the multi-effect interfaces at the bottom and top ends thereof, and the multi-effect interface at the bottom of the last distillation tank serves as a distilled water outlet.

4. The residual liquid discharge device of the multi-effect distilled water machine according to claim 1, characterized in that: The top height of the short-distance partition is lower than the top height of the plate, and the short-distance partition and the side wall of the residual liquid treatment box enclose a rear reflow zone.

5. The residual liquid discharge device of the multi-effect distilled water machine according to claim 1, characterized in that: One of the distillation tanks is provided with an expansion interface, and the last stage of the stepped overflow area is provided with a recovery pipeline, which is connected to the expansion interface.

Images