Constant-temperature and constant-pH-value filling body curing box

Abstract

The constant-temperature constant-pH-value filling body curing box comprises a curing box body, a solution filtering device and a solution distributing box, a heating plate and a semiconductor chilling plate are arranged in the curing box body, the temperature of a solution in the curing box body is controlled by a temperature adjusting device, and a water outlet pump is arranged on one side of the bottom of the curing box body; the water outlet pump is connected with a liquid inlet valve of a solution filtering device, ion exchange resin is arranged in the solution filtering device, a liquid outlet valve of the solution filtering device is connected with a solution distribution box, a solution stirring device is installed at the bottom of the solution distribution box, and the upper end of the solution distribution box is connected with a standard acid solution storage device. Through the arrangement, the maintenance solution can be always in a circular flow state, the pH value of the solution in the maintenance box is kept stable, the underground mine water environment is effectively simulated, pollution is reduced, and the experiment requirement is met.

Description

Technical Field

[0001] The invention relates to the technical field of filling specimen curing equipment, in particular to a filling curing box with a constant temperature and a constant pH value. Background Art

[0002] In mining, especially when using backfill mining method, the goaf needs to be filled to ensure the safety and stability of the mine. The performance of the backfill is directly related to the support effect of the goaf and the long-term stability of the mine. For example, tailings cementation backfill is a commonly used backfill method, and the backfill is affected by factors such as the in-situ temperature of the mine site and the pH value of the mine water during the curing process. In the traditional backfill strength design, the material mix ratio is determined under standard indoor constant temperature and humidity conditions, which is different from the in-situ curing environment of the underground backfill, resulting in significant differences in the mechanical properties of the backfill samples prepared in the laboratory and the in-situ backfill on site. In order to accurately predict the mechanical properties of the backfill in the in-situ environment of the mine site and ensure that the design of the mine filling ratio parameters is reasonable and economical, it is necessary to simulate the actual environment to cure and study the backfill, which has promoted the development of backfill curing boxes.

[0003] However, most of the current filling curing boxes have simple structures, and most of them can only control the temperature but cannot simulate the actual environment, especially the pH value of mine water.

[0004] Chinese patent CN222609966U discloses a cement specimen curing box device. This patent enables the air to circulate between the partitions of the curing box, driving the air circulation between the partitions, avoiding the humidity difference between the upper and lower spaces of the water curing box device, and is easy to use. However, it cannot control the pH value change of the curing water solution.

[0005] Chinese patent CN110843111B discloses a constant temperature curing box device for cement specimens. This patent connects each storage chamber to a temperature control chamber by providing a vent pipe, a valve and an air outlet, so that the temperature of the cement specimens stored in the entire curing box is always the same, but it cannot achieve full water curing.

[0006] Therefore, a filling body curing box with constant temperature and constant pH value is proposed. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to overcome the defects of existing devices and invent a constant temperature and constant pH value filling body curing box, which can fully water-cure the filling body and keep the temperature and pH value of the curing water solution constant.

[0008] In order to solve the above problems, the present invention provides the following technical solutions:

[0009] The present invention is a filling body curing box with a constant temperature and constant pH value, comprising a curing box body, a solution filtering device and a solution dispensing box. A heating plate is provided inside the curing box body, and the curing solution inside the curing box is heated by the heating plate. The heating temperature of the heating plate is controlled by a temperature regulating device. The temperature regulating device is installed on one side of the bottom of the curing box body. A water outlet pump is provided on one side of the bottom of the curing box body. The water outlet pump is connected to the water inlet of the solution filtering device. A pH detection device is provided on one side of the bottom of the curing box to monitor the pH of the curing solution in real time. A solution filtering device is installed on the outer wall of the curing box. The water outlet of the solution filtering device is connected to one side of the solution dispensing box. A solution stirring device is installed at the bottom of the solution dispensing box. A storage device for a standard acidic solution is installed at the upper end of the solution dispensing box.

[0010] Furthermore, the temperature regulating device can regulate the temperature in the range of 15-60 degrees Celsius and can display the temperature of the solution in the curing box in real time.

[0011] Furthermore, the solution filtering device is equipped with a cation exchange resin, which can adsorb hydrogen ions in the solution entering the solution filtering device, thereby converting the pH value of the solution to neutral.

[0012] Furthermore, the cation exchange resin in the solution exchange device can be replaced and recycled.

[0013] Furthermore, the solution stirring device can keep rotating to make the solution composition more uniform.

[0014] Furthermore, the storage device for the standard acidic solution can store standard solutions of different pH values and can adjust the volume of the standard solution released at one time.

[0015] Furthermore, the inner wall of the curing box body is corrosion-resistant.

[0016] Compared with the prior art, the present invention has the following benefits: the curing box body, the solution filtering device and the solution dispensing device are in a connected state, and the solution circulating between these three parts can better simulate the actual state of groundwater. The solution can circulate between the devices without discharge, reducing the steps of waste solution treatment and being more environmentally friendly. The curing box can be adjusted to achieve fully automatic operation, reducing manual intervention and making it more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification, but do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the front view structure of the present invention;

[0019] Figure 2 Schematic diagram of the solution stirring device of the present invention;

[0020] Figure 3 Schematic diagram of the solution filtration device of the present invention;

[0021] Figure 4 This is a schematic diagram of the heating plate of the present invention;

[0022] Figure 5 This is a schematic diagram of the internal structure of the curing box body of the present invention;

[0023] Figure 6 Schematic diagram of the internal structure of the solution dispensing box of the present invention;

[0024] Figure: 1, curing box body; 2, temperature control device; 3, base; 4, solution filter; 5, output water pump; 6, infusion line; 7, liquid outlet line; 8, solution distribution box; 9, titration solution storage device; 10, titration solution infusion pipe; 11, heating pipe; 12, regeneration liquid inlet valve; 13, exhaust valve; 14, cushion layer; 15, filtered solution inlet valve; 16, ion exchange resin; 17, stirring fan blade; 18, rotating motor; 19, filtered solution outlet valve; 20, temperature control button; 21, temperature display 1. Indicator; 22. pH detection device for curing box body; 23. Curing box cover; 24. Solution stirring device; 25. Solution filling valve; 26. Solution dispensing pipe; 27. Standard solution output pump; 28. Power switch; 29. Drain valve; 30. Titration solution pump; 31. Semiconductor refrigeration chip; 32. Heating plate; 33. Standard solution output valve; 34. Filter solution output pump; 35. Stirring fan; 36. Drive shaft; 37. pH detection device for solution dispensing box; Standard solution; 38. Standard solution output pump switch DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0026] Example 1

[0027] like Figure 1-6As shown, the present invention provides a constant temperature and constant pH value filling body curing box, including a curing box body 1, a solution filtering device 4, and a solution dispensing box 8. The inner wall of the curing box body is made of PVC material, and the temperature regulating device 2 is connected to the heating plate 32. The temperature regulating device can manually adjust the heating temperature of the heating plate. The curing box is supported by a base 3. An output water pump 5 is provided on the outside of the curing box. The solution in the curing box can be pumped into an infusion line 6 made of PVC material through the output water pump 5. The other end of the infusion line is connected to the solution filtering device 4 through a filtered solution inlet valve 15. The other end of the solution filtering device 4 is fixedly installed with a filtered solution outlet valve 19. The outlet valve is fixedly connected to the outlet pipeline 7. The other end of the outlet valve is fixedly connected to one side of the solution dispensing box 8. The upper end of the solution dispensing box 8 is connected to the titration solution storage device 9. A titration solution infusion pipe 10 is installed on one side of the standard solution storage device.

[0028] Furthermore, the temperature adjustment device can manually set the heating temperature and continue heating by means of the temperature adjustment button 20;

[0029] Furthermore, a temperature display 21 is installed on the temperature regulating device, which can display the temperature of the curing box in real time; further, a pH detection device 22 is installed on the upper end of the temperature regulating device 2, which can display the pH of the solution in real time;

[0030] Furthermore, a regeneration liquid inlet valve 12 is installed on one side of the upper end of the solution filtration device, which can be used to inject regeneration liquid into the solution filtration device to restore the function of the ion exchange resin when the curing tank is not in use;

[0031] Furthermore, an ion exchange resin 16 is placed in the solution filtration device 4, which can adsorb the hydrogen ions of the solution entering the solution filtration device 4 to keep the solution neutral;

[0032] Furthermore, a cushion layer is installed at the bottom of the solution filtration device 4 to support the ion exchange resin 16;

[0033] Furthermore, a solution stirring device 24 is installed at the bottom of the solution dispensing box. The solution stirring device is composed of a stirring fan 17 and a rotating motor 18. The rotating motor has a waterproof function.

[0034] Furthermore, the volume of solution contained in the solution distribution box 8 is the same as the volume of solution contained in the curing box body 1; further, the standard solution output water pump 27 can set the pumping time and pumping volume.

[0035] The operating method of the present invention is as follows:

[0036] 1. Replace the ion exchange resin in the solution filtration device 4 with a functioning ion exchange resin and close the regeneration liquid inlet valve;

[0037] 2. Add distilled water into the solution dispensing tank 8 through the solution filling valve 25 to fill it up;

[0038] 3. Add the standard titrant into the titrant storage device 9;

[0039] 4. Set the pumping time and pumping volume and start the titration solution pump 30;

[0040] 5. When the solution dispensing tank 8 is full, start the standard solution output pump 27 to pump the solution in the dispensing tank 8 into the curing tank body 1;

[0041] 6. When the curing box body 1 is full of solution, stop injecting distilled water and close the distilled water inlet valve 25;

[0042] 7. Use the adjustment button 20 to adjust the temperature adjustment device 2 to the desired temperature and start heating;

[0043] 8. Observe the temperature display. When the temperature reaches the set value, open the curing box cover 23 and place the filling specimen in. 9. When the curing reaches the required number of days, turn off the power button 28, open the curing box cover 23 and place the filling specimen in. 10. Unscrew the drain valve 9 to drain the waste liquid.

[0044] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A constant temperature and pH value filling curing box, characterized by: A curing box body (1), a solution filtering device (4) and a solution dispensing box (8), wherein a titration solution storage device (9) is installed on the solution dispensing box (8); The outer surface of the curing box body (1) is made of metal material, and there is an openable curing box cover (23) on the upper side, and the inner side of the cover is made of hard PVC material. A temperature adjustment button (20), a temperature display device (21), a curing box body pH detection device (22) and a power switch (28) are installed on one side of the surface of the curing box body (1). Two bases (3) made of hard PVC material are fixedly installed below the curing box body (1). The inner wall of the curing box body (1) is covered with hard PVC material. A semiconductor refrigeration plate (21) is installed between the outer surface and the inner wall of the curing box body (1) and is connected to the temperature adjustment device (2). The bottom of the inner wall of the curing box body (1) is installed There is a heating plate (32), the heating plate has a heating pipe (11) connected to the temperature regulating device (2), a drain valve (29) is installed on one side of the outer wall of the curing box body (1), an output water pump (5) is installed on one side below the outer wall of the curing box body (1), a solution distribution pipe (26) made of PVC material is installed at the bottom of the curing box body (1), one end of the solution distribution pipe (26) is connected to the curing box body (1), and the other end is connected to the standard solution output water pump (27) made of hard PVC material, a water outlet pump (5) is installed on one side below the outer wall of the curing box body (1), and the other end of the output water pump is connected to an infusion line (6) made of hard PVC material; The solution filtering device (4) is composed of a plurality of capsule-shaped structures made of hard PVC installed side by side, with a hollow interior and a wall thickness of 8mm-10mm, made of hard PVC. A cushion layer (14) is installed at the bottom end of the interior of the solution filtering device (4), and a recyclable ion exchange resin (16) is placed above the cushion layer. A filtered solution outlet valve (19) is installed at the top end of the exterior of the solution filtering device (4) and is connected to an outlet pipeline (7) made of hard PVC material. A filtered solution inlet valve (15) is installed at the bottom end and is connected to an infusion pipeline (6) made of hard PVC material. The infusion pipeline is connected to a filtered solution output pump (34) on the left side of the solution distribution box. A through-type transmission shaft (36) is fixedly installed inside the solution distribution box (8), and stirring blades (35) are respectively installed at the upper and lower ends of the transmission shaft. A standard solution output valve (33) is installed on one side of the bottom of the solution distribution box (8), and a filtered solution output pump (34) is installed on the outer wall. A solution distribution box pH detection device (37) is installed on the outer wall of the curing box, and a standard solution output water pump switch (38) is installed next to the solution distribution box pH detection device (37). The solution dispensing device (8) according to claim 1 has an inner wall made of hard PVC material; The transmission shaft (36) and the stirring blade (35) according to claim 1 are made of hard PVC material. The rotating motor (18) according to claim 1 is a waterproof motor.

Images