Forced stretching instant dissolving device

Abstract

The invention belongs to the technical field of oil and gas field development and research, and discloses a forced stretching instant dissolving device capable of improving polymer preparation efficiency. Comprising a dissolving unit located in a shell and a driving unit. The dissolving unit comprises a driving shaft connected with the driving unit and a fluted disc assembly connected to the shaft, the fluted disc assembly comprises a movable fluted disc connected to the driving shaft and a fixed fluted disc with the periphery fixed to the shell, a liquid inlet cavity is formed in the outer side of the fixed fluted disc, and a liquid outlet cavity is formed in the outer side of the movable fluted disc; the movable fluted disc comprises a liquid suction disc and a plurality of fluted discs, the liquid suction disc and the fluted discs are coaxially connected in the direction facing the liquid outlet cavity, the outer diameter size sets of the liquid suction disc and the fluted discs are gradually increased, a fit clearance is formed between the inner surface of the fixed fluted disc and the outer surface of the movable fluted disc, and intervals are formed on the periphery of each fluted disc at equal intervals. The driving shaft is driven by the driving shaft to drive the movable fluted disc to rotate relative to the fixed fluted disc, the liquid suction disc sucks liquid into the liquid inlet cavity from the liquid inlet of the shell and guides the liquid into the space and the fit clearance, and the liquid enters the liquid outlet cavity after being sheared, extruded and stretched in the space and the fit clearance.

Description

Technical Field

[0001] The invention relates to the technical field of oil and gas field development research, and in particular to a forced stretching quick-dissolving device. Background Art

[0002] In recent years, my country's demand for crude oil has continued to increase, the number of offshore oilfield developments has gradually increased, and the scale of polymer flooding technology trials in offshore oilfields has gradually expanded. The high mineralization of offshore oilfield solvent water increases the difficulty of polymer dissolution and maturation. Due to its large molecular weight, the diffusion rate of dry powder polymers is very different from that of water molecules, and it needs to undergo a dissolution process in water, swelling first and then dissolving. On the one hand, the swelling process is a unilateral diffusion of water molecules to the polymer dry powder; on the other hand, the hydrogen bonds formed between the amide side groups within the polymer molecular chain and between the molecular chains make the polymer molecules tend to curl up, and it takes a certain period of maturation to achieve the expected viscosity-increasing effect. The poor dissolution effect of polymer dry powder will not only affect the viscosity-increasing and oil-displacing effects of the polymer itself, but also cause the injection pressure of the polymer solution to be artificially high and even cause injection difficulties.

[0003] In the prior art, a polymer forced stretching quick-dissolving device is usually used to quickly dissolve the polymer. The main principle is to accelerate the dissolution of the polymer by grinding the swollen particles with a grinding component to reduce the particle size of the swollen particles. However, the existing polymer forced stretching quick-dissolving device is too large in size and heavy in weight, which requires a high economic cost. In addition, the mother liquor after grinding has a viscosity loss compared with the conventional indoor preparation, which is not conducive to its widespread application on offshore platforms.

[0004] Therefore, it is necessary to further develop a new forced stretching and quick-dissolving device for dry powder polymers, which can reduce its volume and weight to reduce economic costs, better enhance the forced stretching effect, and reduce viscosity loss to improve polymerization efficiency. Summary of the invention

[0005] In order to improve the polymerization efficiency, the present invention proposes a forced stretching quick dissolution device.

[0006] The forced stretching instant dissolving device according to the present invention comprises: a shell; a dissolving unit located in the shell, the dissolving unit divides the shell into a liquid inlet chamber and a liquid outlet chamber, a liquid inlet connected to the liquid inlet chamber and a liquid outlet connected to the liquid outlet chamber are formed on the shell, and a driving unit connected to the dissolving unit. The dissolution unit includes a driving shaft connected to the driving shaft of the driving unit and a gear disk assembly connected to the driving shaft, the gear disk assembly includes a moving gear disk connected to the driving shaft and a fixed gear disk whose outer periphery is fixedly connected to the inner wall of the shell, the outer side of the fixed gear disk is a liquid inlet chamber, the outer side of the moving gear disk is a liquid outlet chamber, the moving gear disk includes a liquid suction disk and a plurality of gear disks which are coaxially connected in the direction toward the liquid outlet chamber and whose outer diameter size group gradually increases, a matching gap is formed between the inner periphery of the fixed gear disk and the outer periphery of the moving gear disk, and between the disk surface of the fixed gear disk and the disk surface of the moving gear disk, and spacings are formed on the outer periphery of each gear disk at equal intervals, wherein the driving shaft drives the moving gear disk to rotate relative to the fixed gear disk under the drive of the driving shaft of the driving unit, the liquid suction disk is used to suck the liquid into the liquid inlet chamber from the liquid inlet and guide it to the spacing and matching gap, and the liquid enters the liquid outlet chamber after being sheared, squeezed and stretched in the spacing and gap and is discharged from the liquid outlet.

[0007] Furthermore, a plurality of guide arms are formed on the disk surface of the liquid suction disk facing the liquid inlet cavity and are arranged divergently from the center of the disk surface to the periphery of the disk surface.

[0008] Further, among adjacent toothed discs, the spacing between toothed discs with smaller outer diameters is greater than the spacing between toothed discs with larger outer diameters.

[0009] Furthermore, the spacing on the toothed disc with a larger outer diameter is 1 / 3 of the spacing on the toothed disc with a smaller outer diameter.

[0010] Furthermore, the range of the fitting clearance is 1-2 mm; the range of the spacing on the toothed disc with the smallest outer diameter is 2-4 mm.

[0011] Furthermore, two toothed disc assemblies are arranged in the shell, and a transfer chamber is formed between the two toothed disc assemblies. The outer sides of the two toothed disc assemblies are respectively a liquid inlet chamber and a liquid outlet chamber. A speed change unit is arranged in the transfer chamber. The toothed disc assembly close to the liquid outlet chamber is connected to the driving shaft. The speed change unit includes a driven shaft connected to the toothed disc assembly close to the liquid inlet chamber, a driven gear plate connected to the driven shaft, a slave transmission wheel is arranged on the driven gear plate, a driving gear plate connected to the free end of the driving shaft, a main transmission wheel is arranged on the driving gear plate, and a transmission shaft connected to the inner wall of the shell, and the main transmission wheel and the slave transmission wheel are both connected to the transmission shaft.

[0012] Furthermore, at least one through hole is formed on the disc surface of the driven gear disc and the driving gear disc.

[0013] Furthermore, the outer diameter of the fixed gear in the gear assembly near the liquid outlet chamber is larger than 1 / 3 of the outer diameter of the fixed gear in the gear assembly near the liquid inlet chamber, and the outer diameter of the movable gear in the gear assembly near the liquid outlet chamber is larger than 1 / 3 of the outer diameter of the movable gear in the gear assembly near the liquid inlet chamber.

[0014] Furthermore, the area of ​​the driving shaft located in the liquid outlet cavity is also connected to a stirring blade.

[0015] Furthermore, the driving unit is a driving motor, which is fixedly connected to the shell via a fixed shaft, and the driving shaft of the driving motor is connected to the driving shaft, which axially passes through the fixed shaft and the shell in sequence and enters the shell.

[0016] Compared with the prior art, the forced stretching instant dissolving device of the present invention generates a strong relative movement between the movable gear disk and the fixed gear disk by driving the movable gear disk to rotate at a high speed relative to the fixed gear disk, thereby generating a strong shear force, friction force and high-speed impact force. When the swollen polymer particles flow through the matching gap and spacing position between the movable gear disk and the fixed gear disk, the polymer swollen particles are effectively dispersed, ground and mixed under the action of shearing, extrusion and stretching, thereby increasing the contact area between water and swollen particles, accelerating the diffusion speed of water molecules into the swollen particles, shortening the swelling and dissolution time, and accelerating the dissolution of the polymer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of a forced stretching instant dissolving device according to an embodiment of the present invention;

[0018] Figure 2 for Figure 1 The schematic structural diagram of the toothed disc assembly shown in the figure shows the entire structure of the movable toothed disc and a partial structure of the fixed toothed disc;

[0019] Figure 3 for Figure 1 A schematic side view of the structure of the toothed disc assembly shown;

[0020] Figure 4 is a schematic diagram of the structure of the speed change unit;

[0021] Figure 5 for Figure 4 The structural schematic diagram of the driven gear plate and the driving gear plate shown;

[0022] Figure 6 for Figure 4 The structural schematic diagram of the main transmission wheel and the slave transmission wheel shown;

[0023] Figure 7 This is a diagram showing the gelling effect of a system prepared by using the forced stretching instant dissolution device of an embodiment of the present invention to efficiently and quickly dissolve a dry powder polymer. DETAILED DESCRIPTION

[0024] In order to better understand the purpose, structure and function of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings.

[0025] Figure 1 The structure of a forced stretching instant dissolving device 100 according to an embodiment of the present invention is shown. The forced stretching instant dissolving device 100 may include: a shell 101; a dissolving unit 30 located in the shell 101, the dissolving unit 30 divides the shell 101 into a liquid inlet chamber 2 and a liquid outlet chamber 14, and the shell 101 is formed with a liquid inlet 1 connected to the liquid inlet chamber 2 and a liquid outlet 9 connected to the liquid outlet chamber 14, and a driving unit 11 connected to the dissolving unit 30. The dissolving unit 30 may include a driving shaft 12 connected to the driving shaft of the driving unit 11 and a gear assembly 31 connected to the driving shaft 12, the gear assembly 31 may include a movable gear 4 connected to the driving shaft 12 and a fixed gear 3 whose outer periphery is fixedly connected to the inner wall of the shell 101, the outer side of the fixed gear 3 is the liquid inlet chamber 2, the outer side of the movable gear 4 is the liquid outlet chamber 14, combined with the fixed gear 3, the fixed gear 3 is connected to the inner wall of the shell 101, the outer side of the fixed gear 3 is the liquid inlet chamber 2, the outer side of the movable gear 4 is the liquid outlet chamber 14, and the fixed gear 3 is connected to the inner wall of the shell 101. Figure 2 and Figure 3 As shown, the movable gear plate 4 may include a liquid suction plate 41 and a plurality of gear plates (such as Figure 2 The first toothed disc 42 and the second toothed disc 43 shown in the figure, a matching gap 401 is formed between the inner periphery of the fixed toothed disc 3 and the outer periphery of the movable toothed disc 4, and between the disc surface of the fixed toothed disc 3 and the disc surface of the movable toothed disc 4, and spacings 402 are formed evenly on the outer periphery of each toothed disc. Among them, the driving shaft 12 drives the movable toothed disc 4 to rotate relative to the fixed toothed disc 3 under the drive of the driving shaft of the driving unit 11, and the liquid suction disc 41 is used to suck the liquid from the liquid inlet 1 into the liquid inlet cavity 2 and guide it to the spacing 402 and the matching gap 401. After the liquid is sheared, squeezed and stretched in the spacing 402 and the matching gap 401, it enters the liquid outlet cavity 14 and is discharged from the liquid outlet 9.

[0026] The forced stretching instant dissolving device 100 of the embodiment of the present invention drives the movable toothed disc 4 to rotate at a high speed relative to the fixed toothed disc 3 to generate a strong relative movement between the movable toothed disc 4 and the fixed toothed disc 3, thereby generating a strong shear force, friction force and high-speed impact force. When the swollen polymer particles flow through the matching gap 401 and the spacing 402 between the movable toothed disc 4 and the fixed toothed disc 3, the polymer swollen particles are effectively dispersed, ground and mixed under the action of shear, extrusion and stretching, thereby increasing the contact area between water and the swollen particles, accelerating the diffusion rate of water molecules into the swollen particles, shortening the swelling and dissolution time, and thus accelerating the dissolution of the polymer.

[0027] In the forced stretching instant dissolving device 100 of the embodiment of the present invention, the movable toothed disc 4 is configured to include a liquid suction disc 41 and a plurality of toothed discs which are coaxially connected in the direction toward the liquid outlet chamber 14 and whose outer diameter size groups gradually increase, so that the movable toothed disc 4 is formed into a stepped toothed disc, and there is a matching gap 401 between the top surface and the side surface of each toothed disc of the stepped toothed disc and the fixed toothed disc 3, and the matching gap 401 between the top surface of each toothed disc and the fixed toothed disc 3 mainly provides the effect of extrusion and stretching, while the matching gap 401 between the side surface of each toothed disc and the fixed toothed disc 3 mainly provides the effect of shearing and stretching; at the same time, by forming a spacing 402 at equal intervals on the outer periphery of each toothed disc, the spacing 402 further provides the effect of shearing, extrusion and stretching, thereby further enhancing the forced stretching effect. By specifically setting the size of the matching gap 401 and the spacing 402, the effect of forced stretching can be controlled.

[0028] The forced stretching instant dissolving device 100 of the embodiment of the present invention has a smaller volume and weight, a better forced stretching effect, can reduce viscosity loss, and speeds up the dissolution time of dry powder polymers on offshore platforms from the perspective of the device, effectively improving the polymerization efficiency.

[0029] According to the present invention, in Figure 2 In the preferred embodiment shown, a plurality of guide arms 411 are formed on the surface of the liquid suction plate 41 facing the liquid inlet chamber 2, which are arranged divergently from the center of the surface to the periphery of the surface. The guide arms 411 mainly play the role of rough mixing and suction of liquid.

[0030] In a preferred embodiment, in order to enable the flow guide arm 411 to guide the liquid to the gap 402 and the matching gap 401 more quickly and fully, the flow guide arm 411 can be extended to the starting end of the gap 402 on the adjacent toothed disc; the end of the gap 402 on the toothed disc with a smaller outer diameter on the adjacent toothed disc is connected to the starting end of the gap 402 on the toothed disc with a larger outer diameter. Figure 2 For example, the movable gear plate 4 includes a liquid suction plate 41, a first gear plate 42 and a second gear plate 43 which are coaxially connected in the direction toward the liquid outlet chamber 14 and have gradually increasing outer diameter size groups. The guide arm 411 extends to the starting end of the spacing 402 on the first gear plate 42 adjacent to it; the end of the spacing 402 on the first gear plate 42 is connected to the starting end of the spacing 402 on the second gear plate 43.

[0031] According to the present invention, in order to further improve the forced stretching effect, it can be arranged in adjacent toothed discs that the spacing on the toothed disc with a smaller outer diameter is larger than the spacing on the toothed disc with a larger outer diameter. Figure 2 For example, the spacing 402 on the first toothed disc 42 is greater than the spacing 402 on the second toothed disc 43 , and the polymer swollen particles can be ground more finely when passing through the second toothed disc 43 than when passing through the first toothed disc 42 .

[0032] Preferably, the spacing on the toothed disc with a larger outer diameter is 1 / 3 of the spacing on the toothed disc with a smaller outer diameter. Figure 2 For example, the spacing 402 on the second toothed disc 43 is 1 / 3 of the spacing 402 on the first toothed disc 42. Further preferably, the toothed disc with the smallest outer diameter (i.e. Figure 2 The spacing 402 on the first toothed disc 42 shown is in the range of 2-4 mm, more preferably 3 mm.

[0033] Also preferably, the fitting gap 401 is in the range of 1-2 mm, more preferably 1.5 mm.

[0034] According to the present invention, in Figure 1 In the preferred embodiment shown, two toothed disc assemblies 31 are arranged in the housing 101, a transfer chamber 8 is formed between the two toothed disc assemblies 31, the outer sides of the two toothed disc assemblies 31 are respectively the liquid inlet chamber 2 and the liquid outlet chamber 14, a speed change unit is arranged in the transfer chamber 8, and the toothed disc assembly 31 close to the liquid outlet chamber 14 is connected to the driving shaft 12, combined with Figure 4 As shown, the speed change unit may include a driven shaft 5 connected to a toothed disc assembly 31 near the liquid inlet chamber 2, a driven gear plate 6 connected to the driven shaft 5, a slave transmission wheel 17 being arranged on the driven gear plate 6, a driving gear plate 15 connected to the free end of the driving shaft 12, a main transmission wheel 16 being arranged on the driving gear plate 15, and a transmission shaft 7 connected to the inner wall of the housing 101, and the main transmission wheel 16 and the slave transmission wheel 17 are both connected to the transmission shaft 7.

[0035] In this embodiment, by providing two toothed disc assemblies 31, the micelles can first be broken to a certain size in the toothed disc assembly 31 near the liquid inlet chamber 2, and then flow to the toothed disc assembly 31 near the liquid outlet chamber 14 for the next stage of breaking to a desired size. The combination of the two can effectively break the polymer swollen micelles to improve the dissolution efficiency of the polymer particles. Preferably, in order to further improve the forced stretching effect, a multi-stage mass transfer method of connecting more toothed disc assemblies 31 in series can be selected.

[0036] Combination Figure 4-6 As shown, the center of the driven gear plate 6 is connected to the driven shaft 5, the center of the driving gear plate 15 is connected to the driving shaft 12, the driven gear plate 6 is connected to the slave transmission wheel 17 through gear engagement, and the driving gear plate 15 is connected to the main transmission wheel 16 through gear engagement. By designing driven gear plates 6 and driving gear plates 15 of different sizes, the rotational speed of the moving gear plate 4 of the gear plate assembly 31 close to the liquid inlet chamber 2 can be adjusted and controlled to achieve the desired speed change effect to meet the pretreatment of dry powder polymer.

[0037] like Figure 5As shown, at least one through hole 18 is formed on the disc surface of the driven gear disc 6 and the driving gear disc 15 to ensure that the polymer particles can pass through the transfer chamber 8 .

[0038] In such Figure 1 In the preferred embodiment shown, the outer diameter of the fixed toothed disc 3 in the toothed disc assembly 31 near the liquid outlet chamber 14 is larger than 1 / 3 of the outer diameter of the fixed toothed disc 3 in the toothed disc assembly 31 near the liquid inlet chamber 2, and the outer diameter of the movable toothed disc 4 in the toothed disc assembly 31 near the liquid outlet chamber 14 is larger than 1 / 3 of the outer diameter of the movable toothed disc 4 in the toothed disc assembly 31 near the liquid inlet chamber 2. This arrangement can provide greater centrifugal force to achieve better extrusion, shearing and stretching effects.

[0039] Furthermore, if Figure 1 As shown, the region of the driving shaft 12 located in the liquid outlet chamber 14 may also be connected to a stirring blade 13. The stirring blade 13 may provide centrifugal force for the liquid in the liquid outlet chamber 14, so that the liquid is pressurized and enters the liquid outlet 9.

[0040] Furthermore, if Figure 1 As shown, the driving unit 11 can be a driving motor, and the driving motor and the shell 101 can be fixedly connected through the fixed shaft 10. The driving shaft of the driving motor is connected to the driving shaft 12, and the driving shaft 12 axially passes through the fixed shaft 10 and the shell 101 in sequence and enters the shell 101.

[0041] The following is a specific operation process of dissolving a dry powder polymer using the forced stretching instant dissolving device 100 of the embodiment of the present invention: prepare the first liquid storage tank and the second liquid storage tank in advance, and preliminarily prepare a polymer dispersion solution in the first liquid storage tank according to the polymer concentration required for the on-site operation. The first liquid storage tank is connected to the liquid inlet 1 through a pipeline, and the liquid outlet 9 is connected to the second liquid storage tank through a pipeline. The motor is turned on, and the motor drives the driving shaft 12 to rotate. The driving shaft 12 drives the stirring blades 13, the movable toothed disc 4 in the toothed disc assembly 31 close to the liquid outlet chamber 14, and the driving gear disc 15 to rotate. The driving gear disc 15 drives the main transmission wheel 16 and the slave transmission wheel 17 to rotate axially, and the slave transmission wheel 17 drives the driven gear disc 6 to rotate, thereby driving the driven shaft 5 and the movable toothed disc 4 in the toothed disc assembly 31 close to the liquid inlet chamber 2 to rotate. When the polymer dispersed solution enters the liquid inlet chamber 2, the suction effect generated by the liquid suction disc 41 of the movable gear disc 4 sucks the polymer dispersed solution into the gear disc assembly 31 near the liquid inlet chamber 2, and after the preliminary treatment is completed by extrusion and shearing of the spacing 402 and the matching gap 401 on the first gear disc 42 and the second gear disc 43, it enters the transfer chamber 8, passes through the perforations 18 in the driven gear disc 6 and the driving gear disc 15, and under the suction effect of the liquid suction disc 41 of the gear disc assembly 31 near the liquid outlet chamber 14, it enters the first gear disc 42 and the spacing 402 and the matching gap 401 on the second gear disc 43 in the gear disc assembly 31 near the liquid outlet chamber 14, and is extruded and sheared to complete the final treatment, and enters the liquid outlet chamber 14, and is discharged into the second liquid storage tank through the liquid outlet 9 under the stirring of the stirring blades 13 and the centrifugal action.

[0042] When the forced stretching quick dissolving device 100 of the embodiment of the present invention is used to dissolve the dry powder polymer, the inventors prepared dry powder polymer solutions of different concentrations in the room according to the conventional method. The result data showed that when the concentration was 8000-12000 mg·L -1 When the concentration of dry powder polymer increases, the viscosity of the dry powder polymer aqueous solution increases, and is between 921 and 3868 mPa·s, which can reflect good water phase thickening performance.

[0043] The forced stretching instant dissolving device 100 of the embodiment of the invention can achieve a maximum concentration of 12000 mg·L -1 When the concentration of the prepared polymer is 10000 mg·L -1 The best operating parameter is the rotor speed of 2000r·min -1 , the viscosity retention rate is 77.8%; when the prepared polymer concentration is 12000mg·L -1 The best operating parameter is the rotor speed of 2500r·min -1 , viscosity retention rate 67.2%.

[0044] It can be seen that after dissolving the dry powder polymer using the forced stretching instant dissolving device 100 of the embodiment of the present invention, the dry powder polymer gel can have better viscosity, and within a certain polymer concentration range, the viscosity retention rate is higher and the viscosity loss is smaller.

[0045] In addition, if Figure 7 As shown, after the forced stretching quick-dissolving device 100 of the embodiment of the present invention is used to dissolve dry powder polymers of different concentrations, the initial gelation state after aging can still maintain a good gelation state after standing for 30 days, which further verifies the better effect of the forced stretching quick-dissolving device 100 of the embodiment of the present invention on dissolving dry powder polymers.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A forced stretching instant dissolving device, characterized in that: include: case, a dissolving unit located in the shell, the dissolving unit dividing the shell into a liquid inlet chamber and a liquid outlet chamber, the shell being provided with a liquid inlet communicating with the liquid inlet chamber and a liquid outlet communicating with the liquid outlet chamber, and, a driving unit connected to the dissolving unit, The dissolution unit comprises a driving shaft connected to the driving shaft of the driving unit and a toothed disc assembly connected to the driving shaft, the toothed disc assembly comprises a movable toothed disc connected to the driving shaft and a fixed toothed disc whose outer periphery is fixedly connected to the inner wall of the shell, the outer side of the fixed toothed disc is the liquid inlet chamber, the outer side of the movable toothed disc is the liquid outlet chamber, the movable toothed disc comprises a liquid suction disc and a plurality of toothed discs which are coaxially connected in the direction toward the liquid outlet chamber and whose outer diameter size group gradually increases, a matching gap is formed between the inner periphery of the fixed toothed disc and the outer periphery of the movable toothed disc, and between the disc surface of the fixed toothed disc and the disc surface of the movable toothed disc, and spacings are formed on the outer periphery of each of the toothed discs at equal intervals, wherein the driving shaft drives the movable toothed disc to rotate relative to the fixed toothed disc under the driving of the driving shaft of the driving unit, the liquid suction disc is used to suck the liquid from the liquid inlet into the liquid inlet chamber and guide it to the spacing and the matching gap, and the liquid enters the liquid outlet chamber after being sheared, squeezed and stretched in the spacing and the gap and is discharged from the liquid outlet.

2. The forced stretching quick dissolving device according to claim 1, characterized in that: A plurality of guide arms are formed on the disk surface of the liquid suction disk facing the liquid inlet cavity and are arranged divergently from the center of the disk surface to the periphery of the disk surface.

3. The forced stretching quick dissolving device according to claim 1 or 2, characterized in that: Among the adjacent toothed discs, the spacing on the toothed disc with a smaller outer diameter is greater than the spacing on the toothed disc with a larger outer diameter.

4. The forced stretching quick dissolving device according to claim 3, characterized in that: The spacing on the toothed disc with a larger outer diameter is 1 / 3 of the spacing on the toothed disc with a smaller outer diameter.

5. The forced stretching quick dissolving device according to claim 1 or 2, characterized in that: The range of the fitting clearance is 1-2 mm; the range of the spacing on the toothed disc with the smallest outer diameter is 2-4 mm.

6. The forced stretching quick dissolving device according to claim 1 or 2, characterized in that: Two toothed disc assemblies are arranged in the shell, a transfer chamber is formed between the two toothed disc assemblies, the outer sides of the two toothed disc assemblies are the liquid inlet chamber and the liquid outlet chamber respectively, a speed change unit is arranged in the transfer chamber, the toothed disc assembly close to the liquid outlet chamber is connected to the driving shaft, the speed change unit includes a driven shaft connected to the toothed disc assembly close to the liquid inlet chamber, a driven gear plate connected to the driven shaft, a slave transmission wheel is arranged on the driven gear plate, a driving gear plate connected to the free end of the driving shaft, a main transmission wheel is arranged on the driving gear plate, and a transmission shaft connected to the inner wall of the shell, and the main transmission wheel and the slave transmission wheel are both connected to the transmission shaft.

7. The forced stretching quick dissolving device according to claim 6, characterized in that: At least one through hole is formed on the disc surface of the driven gear disc and the driving gear disc.

8. The forced stretching quick dissolving device according to claim 6, characterized in that: The outer diameter of the fixed gear in the gear assembly near the liquid outlet chamber is larger than 1 / 3 of the outer diameter of the fixed gear in the gear assembly near the liquid inlet chamber, and the outer diameter of the movable gear in the gear assembly near the liquid outlet chamber is larger than 1 / 3 of the outer diameter of the movable gear in the gear assembly near the liquid inlet chamber.

9. The forced stretching quick dissolving device according to claim 1 or 2, characterized in that: The area of ​​the driving shaft located in the liquid outlet cavity is also connected with a stirring blade.

10. The forced stretching quick dissolving device according to claim 1 or 2, characterized in that: The driving unit is a driving motor, which is fixedly connected to the housing via a fixed shaft. The driving shaft of the driving motor is connected to the driving shaft, and the driving shaft axially passes through the fixed shaft and the housing in sequence and enters the housing.

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