Salt mud discharge unit of emergency tank in non-purified calcium type brine heat pump salt manufacturing system
By designing a salt mud discharge unit combining rectangular runners and circular pipe runners, the problem of insufficient discharge of salt mud in emergency tanks is solved, and the rapid and blind spot discharge of salt mud is achieved, and the cleaning efficiency and product quality are improved.
Patent Information
- Application Number
- CN202421437055.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-06-21
AI Technical Summary
In the prior art, the salt mud discharge unit of the emergency tank in the non-purified calcium brine heat pump salt production system has the problem of insufficient flow area, which leads to the salt mud being unable to be discharged quickly and without blind spots, affecting the system's cleaning efficiency and product quality.
A new salt sludge discharge unit is designed, adopting a combined structure of rectangular flow channels and circular pipe runners. It is connected through the L-shaped cross-section of the communication notch and the communication hole to ensure that the flow area of the liquid discharge can still be fully utilized at low liquid level, and the stability and discharge efficiency of the structure are improved through the slope structure and reinforcement plate.
The rapid and blind spot discharge of salt mud is achieved, the cleaning efficiency of emergency tanks is improved, the blind spots of the system is reduced, the process cost is reduced, and the stability of product quality is ensured.
Smart Images
Figure CN222646739U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of salt production, and in particular relates to a salt mud discharge unit of an emergency tank in a non-purified calcium brine heat pump salt production system. Background Art
[0002] In the well salt production industry, for calcium-type brine rock salt mines, the raw brine mined contains, in addition to sodium chloride, a small amount of calcium ions, magnesium ions, sulfate and other impurity ions. At present, for salt-making enterprises that adopt the non-purified calcium brine heat pump salt-making process, the brine pumped into the heat pump salt-making system is raw brine that has not been purified. While the raw brine evaporates and crystallizes in the evaporator to form sodium chloride, the impurity ions such as calcium, magnesium, sulfate, etc. contained in it will precipitate as calcium sulfate, magnesium hydroxide and other insolubles during the evaporation and concentration process. A very small amount of the precipitated insolubles will adhere to the system's evaporator tank wall, heating chamber heating pipe wall, chemical process pump and auxiliary pipeline valves and other flow-through components to form a scale layer. As the running time of the salt-making system increases, the scale layer will become thicker and thicker. These scale layers will not only gradually affect the heat exchange effect of the heating equipment, the conveying capacity of the fluid machinery, the reliability of the control valve, the sensitivity of the primary instrument and other process operation indicators, but will also have a negative impact on the safe and stable operation of the system, directly leading to a reduction in the system's production capacity, and will also cause an increase in unit product energy consumption and cost. The continuously enriched impurities in the system will even cause the product quality to gradually exceed the standard.
[0003] In order to eliminate the above-mentioned drawbacks derived from the scale layer, the non-purified calcium brine heat pump salt-making process technology stipulates that when the salt-making system runs continuously for a cycle (about 90 days), all equipment in the system that comes into contact with the liquid should be thoroughly cleaned. This cleaning process is referred to as brushing the tank. The purpose of brushing the tank is to clean the scale layer attached to the inner surface of the equipment. Before brushing the tank, the high-temperature liquid in the salt-making system containing a large amount of sodium chloride and a small amount of calcium sulfate, magnesium hydroxide and other insoluble substances should be discharged to the emergency tank for temporary storage. After the brushing of the tank is completed, the temporarily stored liquid is returned from the emergency tank to the salt-making system to continue heating and evaporating salt. The emergency tank provides a temporary storage space for the high-temperature liquid of the salt-making system. When the system is brushed or an accident occurs in which the liquid must be discharged from the system for processing, it prevents the liquid in the system from being discharged at will, resulting in the loss of heat and sodium chloride contained in it that cannot be recovered to the system.
[0004] Since the temporarily stored liquid discharged from the homemade salt system contains a large amount of sodium chloride as well as a small amount of calcium sulfate, magnesium hydroxide and other insoluble substances, these insoluble substances are deposited at the bottom of the tank. If they are not cleaned in time, it will not only reduce the effective volume of the emergency tank, but also when the liquid in the upper part of the emergency tank is returned to the salt making system, it is easy to be carried into the evaporation tank by the liquid and become impurities again, affecting the long-term stable operation of the device and the product quality. Therefore, the emergency reaction tank needs to be thoroughly cleaned regularly to avoid the old impurities that are constantly enriched in the emergency tank from contaminating the newly discharged liquid.
[0005] Two DN300 liquid outlets are installed in pairs on the tank wall at an angle of 90° to the emergency tank salt mud discharge port and 600 mm from the tank bottom. When cleaning the emergency tank, first drain the clarified liquid above the emergency tank liquid outlet through the two DN300 liquid outlets, then open the DN200 control valve of the salt mud discharge port at the bottom of the emergency tank to drain the liquid below the emergency tank liquid outlet mixed with more calcium and magnesium impurities and salt mud. At present, the common scheme for the discharge unit of the sewage outlet at the bottom of the tank body is to install a sewage circular pipe at the bottom of the tank body, and make the bottom of the circular pipe flush with the bottom of the tank. This installation scheme has the following disadvantages: when the liquid level in the tank gradually decreases to the top of the sewage circular pipe and below, the liquid in the tank cannot fill the sewage circular pipe, so that the flow area of the sewage circular pipe cannot be fully utilized. This installation method not only reduces the flow area of the sewage outlet, but also when there is no liquid filling in the upper part of the sewage circular pipe, it will also form a space with air passing through the head and tail ends of the upper part of the sewage circular pipe, destroying the vacuum in the original sewage pipe and slowing down the discharge speed of the miscellaneous sewage liquid; if a centrifugal sewage pump is connected to the tail end of the sewage circular pipe, the miscellaneous sewage pump will also be unable to work due to evacuation, resulting in the premature termination of the sewage discharge process of the tank body and greatly reducing the sewage discharge effect. Summary of the invention
[0006] In view of the problems existing in the prior art, the utility model provides a salt mud discharge unit for an emergency tank in a non-purified calcium brine heat pump salt-making system, so that the flow area of the circular pipe flow channel of the salt mud discharge port can still be fully utilized when the emergency tank is at a low liquid level, thereby achieving the effect of quickly and without dead ends discharging the salt mud at the bottom of the tank, promoting the speed and smoothness of the salt mud cleaning process of the emergency tank of the non-purified calcium brine heat pump salt-making system and minimizing blind spots, thereby achieving the purpose of saving labor and effort.
[0007] The utility model is implemented as follows: a salt mud discharge unit of an emergency tank in a non-purified calcium brine heat pump salt making system, wherein a discharge port is provided on the side wall of the emergency tank, a rectangular flow channel connected to the inner cavity of the emergency tank is provided on the outer wall of the emergency tank located at the discharge port, a circular pipe flow channel is provided in communication with the rectangular flow channel away from the side of the emergency tank, and a detachable valve for controlling the discharge of the medium is provided on the circular pipe flow channel;
[0008] A connecting hole is provided on the rectangular flow channel away from the emergency tank side, and the circular tube flow channel includes a transition section connected to the rectangular flow channel, and a connecting notch corresponding to the connecting hole is opened on the transition section; the rectangular flow channel and the transition section are connected through the connecting hole and the connecting notch.
[0009] Furthermore, the cross-sections of the connecting notch and the connecting hole are both L-shaped, the horizontal end face of the connecting notch is connected to the bottom plate of the rectangular flow channel, the horizontal end face of the connecting notch corresponds to the horizontal section of the connecting hole, and the vertical end face of the connecting notch is connected to the side plate of the rectangular flow channel away from the emergency tank side, and corresponds to the vertical section of the connecting hole. This makes the effective flow surface of the connecting notch lower than the inner bottom surface of the emergency tank, reduces the resistance of the liquid discharge, and improves the discharge efficiency; the connecting notch with an L-shaped cross-section is connected to the bottom plate and side plate of the rectangular flow channel. This connection method enhances the stability of the overall structure, can withstand greater forces, and helps to maintain the stability of the entire system.
[0010] Furthermore, the inner bottom surface of the emergency tank is provided with a slope structure which is inclined from the inner side wall of the emergency tank on the side opposite to the discharge port to the inner side wall of the emergency tank on the discharge port side. The slope structure makes it easier to completely empty the bottom of the emergency tank, reduces the residual amount of liquid at the bottom of the tank, and avoids the accumulation of liquid at the bottom of the tank to form a dead corner.
[0011] Furthermore, the slope of the slope structure is 15:1000.
[0012] Furthermore, the lower edge of the discharge port is flush with the lowest end of the slope structure. The liquid can flow quickly and completely to the discharge port, thereby achieving maximum discharge efficiency; ensuring that the liquid can flow out completely during the discharge process, reducing the liquid residue at the bottom of the tank.
[0013] Furthermore, the circular pipe flow channel away from the emergency tank side is provided with an elbow section. The main function of the elbow section is to change the flow direction of the fluid so that the fluid can flow along a predetermined path, adapt to different process flows and equipment layouts, and realize the optimized layout of the pipeline according to the spatial layout and pipeline design, making the layout of the equipment more compact and reasonable.
[0014] Furthermore, a reinforcing rib plate is provided between the outer wall of the rectangular flow channel and the outer wall of the emergency tank. The reinforcing rib plate can effectively enhance the connection strength between the rectangular flow channel and the emergency tank, and improve the stability and bearing capacity of the entire structure; at the connection between the rectangular flow channel and the emergency tank, stress concentration is prone to occur due to the complex force. The reinforcing rib plate can effectively disperse these stresses and reduce the risk of damage caused by stress concentration.
[0015] Furthermore, the discharge port is rectangular, and the inlet end of the rectangular flow channel is connected to the discharge port to achieve communication between the rectangular flow channel and the inner cavity of the emergency tank.
[0016] Furthermore, the valve is connected to the circular tube flow channel via a flange structure.
[0017] The utility model has the following advantages and technical effects: due to the adoption of the above technical scheme, the flow area of the circular pipe flow channel of the salt mud discharge port can still be fully utilized when the emergency tank is at a low liquid level, so as to achieve the effect of quickly and without dead ends discharging the salt mud at the bottom of the tank, promote the rapid and smooth cleaning process of the emergency tank of the non-purified calcium brine heat pump salt making system, minimize the blind spots, and thus achieve the purpose of saving labor and effort.
[0018] Compared with the discharge process of the existing sewage outlet discharge unit structure, the rectangular flow channel has a sufficiently wide transverse cross-section, and the flow area of the discharge port is more fully utilized during the discharge of the liquid inside the emergency tank, and the efficiency of discharging the liquid filling the discharge port is higher.
[0019] The lower half of the transition section of the circular tube flow channel on the outer side of the emergency tank foundation platform is lower than the bottom surface of the emergency tank. This makes the height of the entire transition section at least half the diameter of the circular tube lower than the discharge unit structure in the prior art. The overall position of the transition section is lowered, so that the time for the liquid level in the tank to drop to the top position of the transition section is delayed.
[0020] Directly connecting the connecting notch of the transition section of the circular channel with the connecting hole of the bottom plate of the rectangular channel not only shortens the discharge path of the liquid material, reduces the resistance of the liquid material discharge, but also promotes the simplification, standardization and regularization of the emergency tank cleaning process. The connecting notch is opened on the transition section, and the processing method is simple, does not require the use of complex tools, has low construction difficulty, and does not require special tooling equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a schematic diagram of the overall structure provided by an embodiment of the utility model;
[0022] Figure 2 It is a schematic cross-sectional view of the overall structure provided by an embodiment of the utility model;
[0023] Figure 3 It is a structural schematic diagram of a transition section provided in an embodiment of the utility model.
[0024] In the figure: 1. emergency tank; 1-1. discharge port; 2. rectangular flow channel; 2-1. connecting hole; 3. circular pipe flow channel; 3-1. transition section; 3-2. elbow section; 3-3. connecting slot; 4. valve; 5. reinforcing rib plate; 6. slope structure. DETAILED DESCRIPTION
[0025] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.
[0026] It should be noted that the terms "upper", "lower", "left", "right", "top", "bottom", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.
[0027] like Figures 1 to 3 As shown, the present application provides a salt mud discharge unit of an emergency tank 1 in a non-purified calcium brine heat pump salt making system, wherein a discharge port 1-1 is provided on the side wall of the emergency tank 1, and a rectangular flow channel 2 connected to the inner cavity of the emergency tank 1 is provided on the outer wall of the emergency tank 1 located at the discharge port 1-1, wherein the discharge port 1-1 is rectangular, and the inlet end of the rectangular flow channel 2 is connected to the discharge port 1-1 to realize the connection between the rectangular flow channel 2 and the inner cavity of the emergency tank 1. The outer dimensions of the rectangular flow channel 2 are: 510×400×400 mm. A circular pipe flow channel 3 is provided in communication with the rectangular flow channel 2 away from the side of the emergency tank 1, and the circular pipe flow channel 3 is made of φ219 seamless pipe, and the total length of the transition section 3-1 in the circular pipe flow channel 3 is 160 mm. A detachable valve 4 for controlling the discharge of the medium is provided on the circular pipe flow channel 3, and specifically, the valve 4 is connected to the circular pipe flow channel 3 through a flange structure. Valve 4 is a DN200 gate valve.
[0028] A connecting hole 2-1 is provided on the rectangular flow channel 2 away from the emergency tank 1 side, and the circular tube flow channel 3 includes a transition section 3-1 connected to the rectangular flow channel 2, and a connecting notch 3-3 corresponding to the connecting hole 2-1 is opened on the transition section 3-1; the rectangular flow channel 2 and the transition section 3-1 are connected through the connecting hole 2-1 and the connecting notch 3-3.
[0029] Furthermore, the cross-sections of the connecting slot 3-3 and the connecting hole 2-1 are both L-shaped, the horizontal end face of the connecting slot 3-3 is connected to the bottom plate of the rectangular flow channel 2, the horizontal end face of the connecting slot 3-3 corresponds to the horizontal section of the connecting hole 2-1, and the vertical end face of the connecting slot 3-3 is connected to the side plate of the rectangular flow channel 2 away from the emergency tank 1, and corresponds to the vertical section of the connecting hole 2-1. The horizontal section of the connecting hole 2-1 is a 200×80 mm rectangular hole, and the horizontal end face size of the connecting slot 3-3 is 200×80 mm. The effective flow surface of the connecting slot 3-3 is lower than the internal bottom surface of the emergency tank 1, which reduces the resistance of the liquid discharge and improves the discharge efficiency; the connecting slot 3-3 with an L-shaped cross-section is connected to the bottom plate and side plate of the rectangular flow channel 2. This connection method enhances the stability of the overall structure, can withstand greater forces, and helps to maintain the stability of the entire system.
[0030] Furthermore, the inner bottom surface of the emergency tank 1 is provided with a slope structure 6 which is inclined from the inner side wall of the emergency tank 1 on the side opposite to the discharge port 1-1 to the inner side wall of the emergency tank 1 on the discharge port 1-1 side. The slope structure 6 makes it easier for the bottom of the emergency tank 1 to be completely emptied, reduces the residual amount of liquid at the bottom of the tank, and avoids the accumulation of liquid at the bottom of the tank to form a dead corner.
[0031] Preferably, the slope of the slope structure 6 is 15:1000.
[0032] Preferably, the lower edge of the discharge port 1-1 is flush with the lowest end of the slope structure 6. The liquid can flow quickly and completely to the discharge port 1-1, thereby achieving maximum discharge efficiency, ensuring that the liquid can flow out completely during the discharge process, and reducing the residual liquid at the bottom of the tank.
[0033] Furthermore, the circular tube flow channel 3 away from the emergency tank 1 is provided with an elbow section 3-2. The main function of the elbow section 3-2 is to change the flow direction of the fluid so that the fluid can flow along a predetermined path, adapt to different process flows and equipment layouts, and realize the optimized layout of the pipeline according to the spatial layout and pipeline design, making the layout of the equipment more compact and reasonable.
[0034] Furthermore, a reinforcing rib plate 5 is provided between the outer wall of the rectangular flow channel 2 and the outer wall of the emergency tank 1. The reinforcing rib plate 5 can effectively enhance the connection strength between the rectangular flow channel 2 and the emergency tank 1, and improve the stability and bearing capacity of the entire structure; at the connection between the rectangular flow channel 2 and the emergency tank 1, stress concentration is prone to occur due to the complex force. The reinforcing rib plate 5 can effectively disperse these stresses and reduce the risk of damage caused by stress concentration.
[0035] Due to the adoption of the above technical scheme, the flow area of the circular tube flow channel 3 of the salt mud discharge port 1-1 can still be fully utilized when the emergency tank 1 is at a low liquid level, so as to achieve the effect of quickly and without dead ends discharging the salt mud at the bottom of the tank, thereby promoting the rapid and smooth cleaning process of the emergency tank 1 of the non-purified calcium brine heat pump salt production system and minimizing blind spots, thereby achieving the purpose of saving labor and effort.
[0036] Compared with the discharge process of the existing sewage outlet discharge unit structure, the rectangular flow channel 2 has a sufficiently wide transverse cross-section, and the flow area of the discharge port 1-1 is more fully utilized during the discharge of the liquid inside the emergency tank 1, and the efficiency of the liquid filling the discharge port 1-1 for discharge is higher.
[0037] The lower half of the transition section 3-1 of the circular tube flow channel 3 on the outer side of the foundation platform of the emergency tank 1 is lower than the bottom surface of the emergency tank 1, which makes the height of the entire transition section 3-1 at least half the diameter of the circular tube lower than the discharge unit structure in the prior art. The overall position of the transition section 3-1 is lowered, so that the time for the liquid level in the tank to drop to the top position of the transition section 3-1 is delayed.
[0038] Directly connecting the connecting notch 3-3 of the transition section 3-1 of the circular tube flow channel 3 with the connecting hole 2-1 of the bottom plate of the rectangular flow channel 2 not only shortens the discharge path of the liquid feed, reduces the resistance of the liquid feed discharge, but also promotes the simplification, standardization and regularization of the cleaning process of the emergency tank 1. The connecting notch 3-3 is provided on the transition section 3-1, and the processing method is simple, does not require the aid of complex tools, has low construction difficulty, and does not require special tooling equipment.
[0039] 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 salt mud discharge unit for an emergency tank in a non-purified calcium brine heat pump salt making system, characterized in that: A discharge port is provided on the side wall of the emergency tank, a rectangular flow channel connected to the inner cavity of the emergency tank is provided on the outer wall of the emergency tank at the discharge port, a circular pipe flow channel is provided in communication with the rectangular flow channel away from the emergency tank side, and a detachable valve for controlling the discharge of the medium is provided on the circular pipe flow channel; A connecting hole is provided on the rectangular flow channel away from the emergency tank side, and the circular tube flow channel includes a transition section connected to the rectangular flow channel, and a connecting notch corresponding to the connecting hole is opened on the transition section; the rectangular flow channel and the transition section are connected through the connecting hole and the connecting notch.
2. The salt mud discharge unit of the emergency tank in the non-purified calcium brine heat pump salt making system according to claim 1 is characterized in that: The cross-sections of the connecting slot and the connecting hole are both L-shaped sections, the horizontal end surface of the connecting slot is connected to the bottom plate of the rectangular flow channel, the horizontal end surface of the connecting slot corresponds to the horizontal section of the connecting hole, and the vertical end surface of the connecting slot is connected to the side plate of the rectangular flow channel away from the emergency tank side, and corresponds to the vertical section of the connecting hole.
3. The salt mud discharge unit of the emergency tank in the non-purified calcium brine heat pump salt making system according to claim 1 or 2, characterized in that: The inner bottom surface of the emergency tank is provided with a slope structure which is inclined from the inner side wall of the emergency tank on the side opposite to the discharge port to the inner side wall of the emergency tank on the discharge port side.
4. The salt mud discharge unit of the emergency tank in the non-purified calcium brine heat pump salt making system according to claim 3 is characterized in that: The slope of the slope structure is 15:1000.
5. The salt mud discharge unit of the emergency tank in the non-purified calcium brine heat pump salt making system according to claim 3, characterized in that: The lower edge of the discharge port is flush with the lowest end of the slope structure.
6. The salt mud discharge unit of the emergency tank in the non-purified calcium brine heat pump salt making system according to claim 1, characterized in that: The circular pipe flow passage away from the emergency tank side is provided with an elbow section.
7. The salt mud discharge unit of the emergency tank in the non-purified calcium brine heat pump salt making system according to claim 1, characterized in that: A reinforcing rib plate is arranged between the outer wall of the rectangular flow channel and the outer wall of the emergency tank.
8. The salt mud discharge unit of the emergency tank in the non-purified calcium brine heat pump salt making system according to claim 1, characterized in that: The discharge port is rectangular, and the inlet end of the rectangular flow channel is connected to the discharge port to achieve communication between the rectangular flow channel and the inner cavity of the emergency tank.
9. The salt mud discharge unit of the emergency tank in the non-purified calcium brine heat pump salt making system according to claim 1, characterized in that: The valve is connected to the circular pipe flow channel through a flange structure.