A constant pressure bottle device based on magnetic drive and water head control method

Abstract

The present invention provides a constant pressure bottle device and a water head control method based on magnetic drive, which are applied to the technical field of agricultural water conservancy engineering. The device includes a circular constant pressure bottle and an air intake assembly; wherein: the circular constant pressure bottle is provided with a hollow chamber inside, a water injection port is provided at the top, and a water outlet is provided at the bottom, and the hollow chamber is connected with the water injection port and the water outlet respectively; the air intake assembly includes: an elastic sealing plug, an air intake hose, a magnet, and a circular metal outlet ball placed in the hollow chamber. The present invention is provided with the above-mentioned structural setting, and while realizing the sealing of the water injection port, the user can drive the circular metal outlet ball to move up and down along the inner wall of the circular constant pressure bottle by moving the magnet up and down, so as to realize the adjustment of the water head height. Compared with the existing technology, there is no need to move the constant pressure bottle, the adjustment convenience is higher, the adjustment accuracy is easier to control, and it is safe and efficient.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural water conservancy engineering, and in particular to a magnetically driven constant pressure bottle device and a water head control method. Background Art

[0002] The constant pressure bottle is based on the principle of communicating vessels, which makes the pressure inside and outside the container consistent, so as to achieve the purpose of constant water head and automatic water replenishment in the constant pressure bottle. However, the constant pressure bottles currently on the market have the following problems: first, poor air tightness leads to unstable water head; second, the infiltration water level adjustment procedure is cumbersome.

[0003] When conducting a constant head water infiltration pressure test, a mechanical lifting platform or padding the bottom of the constant pressure bottle is often used in the process of adjusting the water head. However, in this method, the entire constant pressure bottle moves up and down when adjusting the water head. When water flows out from the outlet of the constant pressure bottle through the hose, the actual water head will often be lower than the set water head due to the existence of the hose water head loss. Therefore, the height of the constant pressure bottle needs to be adjusted repeatedly. For a large-capacity constant pressure bottle filled with water, this mechanical adjustment method is unsafe and time-consuming and labor-intensive.

[0004] Therefore, a constant pressure bottle with simple design, easy operation, high precision and adjustable water level has become a technical problem that is urgently needed to be solved in this field. Summary of the invention

[0005] The present invention provides a constant pressure bottle device based on magnetic drive and a water head control method to overcome the above technical problems.

[0006] In order to solve the above problems, the present invention discloses a constant pressure bottle device based on magnetic drive, wherein the constant pressure bottle comprises a circular constant pressure bottle and an air intake assembly; wherein:

[0007] The circular constant pressure bottle is provided with a hollow chamber inside, a water injection port is provided at the top, and a water outlet is provided at the bottom, and the hollow chamber is connected with the water injection port and the water outlet respectively;

[0008] The air intake assembly comprises: an elastic sealing plug, an air intake hose, a magnet and a round metal outlet ball placed in the hollow chamber;

[0009] One end of the elastic sealing plug is inserted into the water injection port and exerts radial pressure on the water injection port, and the other end is provided with a through hole penetrating the elastic sealing plug;

[0010] One end of the air inlet hose is provided with an air inlet hole, and the other end passes through the through hole and is fixed to the circular metal outlet ball;

[0011] The magnet faces the circular metal outlet balloon and is attached to the outer wall of the circular constant pressure bottle to generate an adsorption force on the circular metal outlet balloon;

[0012] The circular metal outlet ball faces the magnet and is adsorbed on the inner wall of the circular constant pressure bottle. A plurality of interconnected air outlet holes are arranged on the circular metal outlet ball, and the air outlet holes are connected with the air inlet hole through the air inlet hose.

[0013] Optionally, a hollow cavity and a sleeve are provided inside the circular metal air outlet balloon, the hollow cavity and the sleeve are communicated with each other, and the sleeve is fixed and communicated with the air inlet hose;

[0014] The plurality of air outlet holes are evenly distributed on the outer surface of the circular metal air outlet ball and are connected with the hollow cavity.

[0015] Optionally, the air intake assembly further includes a pull ring and an air intake hard pipe;

[0016] One end of the air intake hose provided with an air intake hole is fixed to one end of the air intake hard pipe, and the other end of the air intake hard pipe is fixed to the outer wall of the pull ring, and the air intake hole is opened on the pull ring.

[0017] Optionally, the length of the air intake hose is greater than or equal to 1.5 times the height of the circular constant pressure bottle.

[0018] Optionally, an elastic airtight gasket is further provided between the elastic sealing plug and the water injection port;

[0019] A circle of annular groove is also arranged along the inner wall of the water injection port, the annular groove is coaxial with the water injection port, and the elastic airtight gasket is embedded in the annular groove.

[0020] Optionally, the magnet includes a magnet block and a handle, one end surface of the magnet block is in contact with the outer wall of the circular constant pressure bottle, and the other end surface is fixed to the handle.

[0021] Optionally, the circular constant pressure bottle comprises a constant pressure bottle cover and a constant pressure bottle cavity;

[0022] A circle of grooves is arranged at the bottom end of the constant pressure bottle cover, and a circle of bosses is arranged at the top end of the constant pressure bottle cavity. The bosses and the grooves cooperate with each other and are connected as a whole, so that the connection between the constant pressure bottle cover and the constant pressure bottle cavity is sealed.

[0023] Optionally, it further comprises a water outlet valve, wherein the water outlet valve is installed at the water outlet;

[0024] A water-leakage-proof sealing member is arranged between the water outlet valve and the water outlet.

[0025] In order to solve the above problems, the present invention also discloses a water head control method, which is applied to the constant pressure bottle device of the present invention, and the method comprises:

[0026] Adjust the height according to the preset water head, and determine the target water level line on the circular constant pressure bottle;

[0027] The magnet is moved along the axial direction of the circular constant pressure bottle so that the horizontal plane where the geometric center of the air outlet hole of the circular metal air outlet ball is located is flush with the target water level line.

[0028] Compared with the prior art, the present invention has the following advantages:

[0029] The present invention realizes the sealing of the water inlet by setting up structures such as an elastic sealing plug, an air inlet hose, a magnet and a circular metal outlet ball. At the same time, the user can adjust the water head height by moving the magnet up and down to drive the circular metal outlet ball to move up and down along the inner wall of the circular constant pressure bottle. Compared with the existing technology, there is no need to move the circular constant pressure bottle itself, the adjustment is more convenient, the adjustment accuracy is easier to control, and it is safe and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0031] Figure 1 It is a structural schematic diagram of a constant pressure bottle device based on magnetic drive according to an embodiment of the present invention;

[0032] FIG. 2( a ) is a schematic structural diagram of a constant pressure bottle cover according to an embodiment of the present invention;

[0033] FIG2( b ) is a schematic structural diagram of a constant pressure bottle cavity according to an embodiment of the present invention;

[0034] Figure 3 Schematic diagram of the structure of the water outlet valve according to an embodiment of the present invention

[0035] Figure 4 It is a schematic structural diagram of an elastic sealing plug according to an embodiment of the present invention;

[0036] Figure 5 It is a schematic structural diagram of an elastic airtight gasket according to an embodiment of the present invention;

[0037] FIG6( a ) is a schematic diagram of the structure of an air intake hard pipe according to an embodiment of the present invention;

[0038] FIG6( b ) is a schematic structural diagram of an air intake hose according to an embodiment of the present invention;

[0039] Figure 7 It is a schematic structural diagram of a circular metal outlet balloon according to an embodiment of the present invention;

[0040] Figure 8 is a schematic structural diagram of a magnet according to an embodiment of the present invention;

[0041] Fig. 9 It is a flow chart of the steps of a water head control method according to an embodiment of the present invention.

[0042] Description of reference numerals:

[0043] 1-round constant pressure bottle, 2-air inlet assembly, 101-water filling port, 102-water outlet, 103-constant pressure bottle cover, 104-constant pressure bottle cavity, 105-groove, 106-boss, 107-water outlet valve, 201-elastic sealing plug, 202-air inlet hose, 203-magnet, 204-round metal outlet ball, 205-through hole, 206-air inlet hole, 207-air outlet hole, 208-sleeve, 209-pull ring, 210-air inlet hard tube, 211-elastic airtight gasket, 212-annular groove, 213-magnet block, 214-handle, 215-scale. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] In order to facilitate those skilled in the art to more clearly understand the inventive concept of the present invention, before introducing the constant pressure bottle of the present invention, it is necessary to explain the constant pressure bottle in the prior art and the principle of regulating the water infiltration head:

[0046] The constant pressure bottle in the prior art generally has a water inlet at the upper part of the bottle mouth to fill the constant pressure bottle with water; a fixed air hole and an air hole valve are provided on the side wall of the lower end of the bottle body to control the air pressure in the constant pressure bottle; and a water outlet is also provided at the bottom of the bottle body.

[0047] Water infiltration head regulation principle:

[0048] When the water in the constant pressure bottle is connected to the surface water in the soil column to form a water supply system, based on the principle of water balance in the communicating vessel, in theory, the position of the pores in the constant pressure bottle is always flush with the surface water level of the soil. After starting work, when the water in the soil column decreases slightly due to infiltration, the water in the constant pressure bottle flows to the soil column under the action of potential energy, so that the water in the soil column stabilizes at the original water level. Due to the infiltration of water in the soil column, the water level in the constant pressure bottle drops. At this time, the air pressure in the constant pressure bottle is lower than the atmospheric pressure. The outside air will enter the constant pressure bottle through the pores on the side wall of the constant pressure bottle, increasing the pressure in the constant pressure bottle to achieve a new balance. When the water in the soil column continues to infiltrate, the balance process is repeated as described above.

[0049] However, the above process is only an ideal infiltration process. In practice, when water flows out from the outlet of the constant pressure bottle through the hose, due to the existence of the hose head loss, there is a head difference between the pores of the constant pressure bottle and the water level on the soil surface. For example, if a water infiltration test is performed on the soil column under the condition of a 10 cm head, the constant pressure bottle needs to provide a 10 cm head to the soil column, but due to the existence of head loss, the final depth of water accumulation in the soil column may be only 8 cm. At this time, in order to ensure that the soil column can normally carry out the 10 cm head water infiltration test, the height of the pores can only be raised to create a new imbalance between the air pressure in the constant pressure bottle and the outside, and the water in the constant pressure bottle flows to the soil column, and finally the depth of water accumulation in the soil column reaches 10 cm.

[0050] At present, in the process of adjusting the water head, a mechanical lifting platform or padding the bottom of the constant pressure bottle is often used. However, due to the large volume and weight of the constant pressure bottle filled with water, this mechanical adjustment method is very unsafe and time-consuming. For some factories or enterprises with large-capacity constant pressure water supply needs, it is difficult to adjust the height of the air hole of the constant pressure bottle.

[0051] In view of the technical problem of the present invention, the present invention provides a constant pressure bottle device based on magnetic drive, referring to Figure 1 , shows a schematic structural diagram of a magnetically driven constant pressure bottle device according to an embodiment of the present invention, wherein the constant pressure bottle comprises a circular constant pressure bottle 1 and an air intake assembly 2; wherein:

[0052] A hollow chamber is arranged inside the circular constant pressure bottle 1, a water injection port 101 is arranged at the top end, a water outlet 102 is arranged at the bottom end, and the hollow chamber is connected with the water injection port 101 and the water outlet 102 respectively; the hollow chamber is used to supply water to soil columns and other devices through the water outlet 102; the water injection port 101 is arranged on the top end surface of the circular constant pressure bottle 1, and the diameter of the water injection port 101 is slightly smaller than the diameter of the top surface, and is used to inject water into the hollow chamber to replenish the moisture in the hollow chamber.

[0053] The air intake assembly 2 includes: an elastic sealing plug 201, an air intake hose 202, a magnet 203 and a circular metal outlet ball 204 placed in the hollow chamber; one end of the elastic sealing plug 201 is plugged into the water inlet 101 and exerts radial pressure on the water inlet 101, and the other end is provided with a through hole 205 that penetrates the elastic sealing plug 201; one end of the air intake hose 202 is provided with an air inlet hole 206, and the other end is fixed to the circular metal outlet ball 204 through the through hole 205; the magnet 203 faces the circular metal outlet ball 204 and fits on the outer wall of the circular constant pressure bottle 1 to generate an adsorption force on the circular metal outlet ball 204; the circular metal outlet ball 204 faces the magnet 203 and is adsorbed on the inner wall of the circular constant pressure bottle 1, and a plurality of interconnected air outlet holes 207 are provided on the circular metal outlet ball 204, and the air outlet holes 207 are connected with the air inlet holes 206 through the air intake hose 202.

[0054] The present invention realizes the sealing of the water inlet 101 by setting up structures such as an elastic sealing plug 201, an air inlet hose 202, a magnet 203 and a circular metal outlet ball 204. At the same time, the user can adjust the water head height by moving the magnet 203 up and down to drive the circular metal outlet ball 204 to move up and down along the inner wall of the circular constant pressure bottle 1. Compared with the existing technology, there is no need to move the constant pressure bottle, the adjustment is more convenient, the adjustment accuracy is easier to control, and it is safe and efficient.

[0055] In an optional embodiment of the present invention, the circular constant pressure bottle 1 includes a constant pressure bottle cover 103 and a constant pressure bottle cavity 104. Referring to FIG. 2 (a), a schematic diagram of the structure of the constant pressure bottle cover 103 of an embodiment of the present invention is shown; referring to FIG. 2 (b), a schematic diagram of the structure of the constant pressure bottle cavity 104 of an embodiment of the present invention is shown. The water inlet 101 is arranged on the end surface of the constant pressure bottle cover 103, and the water outlet 102 can be arranged on the lower side wall of the constant pressure bottle cavity 104. A circle of grooves 105 are arranged at the bottom end of the constant pressure bottle cover 103, and a circle of bosses 106 are arranged at the top end of the constant pressure bottle cavity 104. The bosses 106 and the grooves 105 cooperate with each other and are connected as one. When specifically implemented, the bosses 106 and the grooves 105 can be connected by threads or bonded by acrylic glue, glass glue, hot melt glue, etc. It is preferred to use hot melt glue for bonding, so that when cleaning the interior of the constant pressure bottle cavity 104 or replacing parts later, it is easier to separate the cover from the cavity, and it is not easy to damage the cover and the cavity. Among them, after the threaded connection, it is sealed by glass glue or other such as acrylic glue, vaseline, etc., so that the connection between the constant pressure bottle cover 103 and the constant pressure bottle cavity 104 is sealed. The present invention is designed as a circular constant pressure bottle 1 as a structure that the constant pressure bottle cover 103 and the constant pressure bottle cavity 104 can be assembled, which can be conducive to placing and replacing the circular metal outlet ball 204 and cleaning the constant pressure bottle. The design of the groove 105 and the boss 106 can make the constant pressure bottle cover 103 and the constant pressure bottle cavity 104 connected more closely, ensuring the air tightness of the entire device. It should be noted that the groove 105 can also be arranged on the constant pressure bottle cavity 104, and the boss 106 can also be arranged on the constant pressure bottle cover 103. The setting position of the groove 105 and the boss 106 is not unique, and the constant pressure bottle cover 103 and the constant pressure bottle cavity 104 can be achieved. A scale 215 is provided on the outer wall of the constant pressure bottle cavity 104 to facilitate the observation of the change of water flow in the hollow chamber.

[0056] The circular constant pressure bottle 1 of the present invention further comprises a water outlet valve 107, which is installed at the water outlet 102; a water-leakage-proof seal is provided between the water outlet valve 107 and the water outlet 102. The water-leakage-proof seal can be made of raw material tape or silicone ring, etc., and the provision of the water-leakage-proof seal can strengthen the tightness of the connection between the water outlet valve 107 and the water outlet 102, thereby preventing water leakage and further water head loss. Figure 3 , shows a schematic structural diagram of a water outlet valve 107 according to an embodiment of the present invention.

[0057] Reference Figure 4, shows a schematic diagram of the structure of an elastic sealing plug 201 according to an embodiment of the present invention. The elastic sealing plug 201 is an elastic plug body, preferably made of rubber material, with a good balance between elasticity and hardness, and is not easily damaged. The sealing plug is a truncated cone-shaped rubber plug, which can be applied to water injection ports 101 of different calibers, and can ensure that the water injection port 101 is tightly plugged to achieve sealing of the water injection port 101.

[0058] In an optional embodiment of the present invention, an elastic airtight gasket 211 may be further provided between the elastic sealing plug 201 and the water injection port 101; a circle of annular grooves 212 are provided along the inner wall of the water injection port 101, the annular grooves 212 are coaxial with the water injection port 101, and the elastic airtight gasket 211 is embedded in the annular grooves 212. In the process of the elastic sealing plug 201 being inserted into the water injection port 101, the elastic sealing plug 201 applies a radial extrusion force to the elastic airtight gasket 211, and the elastic airtight gasket 211 is compressed and applies a rebound force to the elastic sealing plug 201 to squeeze the elastic sealing plug 201, thereby strengthening the sealing effect between the elastic sealing plug 201 and the water injection port 101. In FIG2(a), the structure of the water injection port 101 and the annular groove 212 provided on the constant pressure bottle cap 103 is shown; refer to FIG2(a). Figure 5 , shows a schematic structural diagram of an elastic airtight gasket 211 according to an embodiment of the present invention.

[0059] The elastic sealing plug 201 is provided with a through hole 205 that passes through the central axis of the elastic sealing plug 201, and the through hole 205 is used to insert the air intake hose 202 into the hollow chamber of the circular constant pressure bottle 1. In specific implementation, the diameter of the through hole 205 can be slightly smaller than the diameter of the air intake hose 202, so that the outer wall of the air intake hose 202 can be squeezed to achieve a seal between the outer wall of the air intake hose 202 and the through hole 205, so that the external atmosphere can enter the hollow chamber only through the air intake hole 206 on the air intake hose 202.

[0060] Of course, in a specific implementation, the air intake hose 202 may also be completely placed in the hollow chamber. In an optional embodiment of the present invention, the air intake assembly 2 further includes a pull ring 209 and an air intake hard tube 210; one end of the air intake hose 202 provided with the air intake hole 206 is fixed to one end of the air intake hard tube 210, and the other end of the air intake hard tube 210 is fixed to the outer wall of the pull ring 209, and the air intake hole 206 is provided on the pull ring 209. During operation, the air intake hard tube 210 replaces the air intake hose 202 and is placed in the through hole 205, and the air intake hose 202 is completely placed in the hollow chamber. The diameter of the air intake hard tube 210 is slightly larger than the diameter of the through hole 205, so that there is radial pressure between the air intake hard tube 210 and the elastic sealing plug 201, thereby achieving sealing between the outer wall of the air intake hard tube 210 and the through hole 205. Compared with the method of inserting the air intake hose 202 into the through hole 205, based on the characteristic that the air intake hard tube 210 is not easily deformed, the sealing effect of the embodiment of the present invention is better and the stability is high. In the embodiment of the present invention, the air intake hose 202 or the air intake hard tube 210 is embedded in the elastic sealing plug 201. The elastic sealing plug 201 can be removed from the water filling port 101 to inject water into the circular constant pressure bottle 1. The water filling port 101 can be quickly sealed by plugging the elastic sealing plug 201. This structure reduces the number of openings on the circular constant pressure bottle 1, so that the entire device has the advantages of good structural stability and good air tightness.

[0061] The pull ring 209 can be a solid tube or a hollow tube, and the present invention does not limit the shape of the pull ring 209. When the pull ring 209 is a solid tube, the air inlet hole 206 is set at the connection between the pull ring 209 and the air inlet hard tube 210 and communicates with the air inlet hard tube 210; when the pull ring 209 is a hollow tube, the pull ring 209 can be integrally formed with the air inlet hard tube 210 and communicate with the air inlet hard tube 210. In this case, the air inlet hole 206 can be set at any position of the pull ring 209. The setting of the pull ring 209 can clamp the air inlet hard tube 210 at the through hole 205 of the elastic sealing plug 201 to ensure that the air inlet hard tube 210 does not fall into the hollow chamber, and it is more convenient when replacing the elastic sealing plug 201 (removing or inserting the air inlet hard tube 210 from the elastic sealing plug 201). Referring to FIG6(a), a schematic diagram of the structure of an air intake tube 210 according to an embodiment of the present invention is shown, in which the air intake hole 206 is arranged at the connection between the pull ring 209 and the air intake tube 210; referring to FIG6(b), a schematic diagram of the structure of an air intake hose 202 according to an embodiment of the present invention is shown, in which the air intake hose 202 and the air intake tube 210 can be connected by threaded connection or sleeve connection. After the two are threaded or sleeved, hot melt adhesive can be used to further seal the connection to enhance air tightness.

[0062] Since the air intake hose 202 can move freely under the action of external force, in an optional embodiment of the present invention, the length of the air intake hose 202 is set to be greater than or equal to 1.5 times the height of the circular constant pressure bottle 1 to ensure that the air intake hose 202 has the required rotation length when water is added to the circular constant pressure bottle 1 and the elastic sealing plug 201 is removed.

[0063] The circular metal outlet ball 204 is spherical, and the circular metal outlet ball 204 and the air inlet hose 202 can be connected by means of snapping or bonding, that is, the air inlet hose 202 can be snapped into an air outlet hole 207 of the circular metal outlet ball 204, or bonded to the circular metal outlet ball 204 by adhesive such as hot melt adhesive, so as to be fixed to the circular metal outlet ball 204. Referring to FIG6, a schematic structural diagram of a circular metal outlet ball 204 according to an embodiment of the present invention is shown, wherein a hollow cavity and a sleeve 208 are provided inside the circular metal outlet ball 204, the hollow cavity and the sleeve 208 are communicated, and the sleeve 208 is fixed and communicated with the air inlet hose 202; a plurality of the air outlet holes 207 are evenly distributed on the outer surface of the circular metal outlet ball 204 and communicated with the hollow cavity. The sleeve 208 and the air inlet hose 202 can be connected by a sleeve connection, that is, the air inlet hose 202 is sleeved outside the sleeve 208, or the sleeve 208 is sleeved outside the air inlet hose 202. To ensure the accuracy of the position of the air outlet hole 207, the air inlet hose 202 and the sleeve 208 are sleeved and then sealed with hot melt adhesive or the like at the connection between the two. The sleeve 208 sleeve connection method adopted in the embodiment of the present invention is convenient for replacing the air inlet hose 202, and can also improve the stability of the connection between the air inlet hose 202 and the circular metal outlet ball 204; at the same time, the multiple air outlet holes 207 are evenly distributed, which can improve the stirring effect of the solution in the bottle, thereby improving the accuracy of the experimental data.

[0064] Reference Figure 7 , shows a schematic diagram of the structure of the magnet 203 according to an embodiment of the present invention, the magnet 203 includes a magnet block 213 and a handle 214, one end face of the magnet block 213 is an arc surface to fit with the outer wall of the circular constant pressure bottle 1, and the other end face is fixed to the handle 214. The magnet 203 is used to drive the circular metal outlet ball 204 to move up and down along the inner wall of the circular constant pressure bottle 1, thereby realizing the function of adjusting the water head, and the setting of the handle 214 makes it easier to move the magnet block 213.

[0065] Next, the assembly steps of the constant pressure bottle according to an embodiment of the present invention are described:

[0066] Step 1: Figure 7 The circular metal outlet ball 204 is placed inside the constant pressure bottle cavity 104 shown in FIG. 2 (b), and the plane of the circular metal outlet ball 204 is closely attached to the inner wall of the constant pressure bottle cavity 104, and then Figure 7 The magnet 203 is shown aligned Figure 7The circular metal outlet ball 204 is tightly attached to both sides of the inner and outer walls of the constant pressure bottle cavity 104 by magnetic force.

[0067] Step 2: Figure 5 The elastic airtight gasket 211 is embedded in the annular groove 212 in the middle of the constant pressure bottle cover 103 shown in FIG. 2 (a), and then Figure 4 The elastic sealing plug 201 is inserted into the water inlet 101 in the middle of the constant pressure bottle cover 103 shown in FIG. 2( a ).

[0068] Step 3: Insert the air intake hard pipe 210 shown in FIG. 6( a) into Figure 4 The elastic sealing plug 201 is shown, and then one end of the air intake hose 202 shown in Figure 6 (b) is connected to one end of the air intake hard pipe 210. The length of the air intake hose 202 is more than 1.5 times the height of the constant pressure bottle.

[0069] Step 4: Match the groove 105 of the constant pressure bottle cover 103 shown in Figure 2 (a) with the boss 106 at the upper end of the constant pressure bottle cavity 104 shown in Figure 2 (b), and bond the interface with hot melt adhesive to make it sealed as a whole.

[0070] Step 5: Figure 3 The outlet valve 107 is wrapped with raw tape and screwed into the bottom interface of the constant pressure bottle cavity 104 shown in Figure 2 (b). The constant pressure bottle is assembled. Figure 1 Constant pressure bottle shown.

[0071] For the technical problems of the present invention, refer to Fig. 9 , showing a flow chart of the steps of a water head control method according to an embodiment of the present invention, applied to a constant pressure bottle device according to an embodiment of the present invention, the method may include the following steps:

[0072] Step S901, adjusting the height according to a preset water head, and determining a target water level line on the circular constant pressure bottle 1;

[0073] Step S902, moving the magnet 203 along the axial direction of the circular constant pressure bottle 1 so that the horizontal plane where the geometric center of the air outlet hole 207 of the circular metal air outlet ball 204 is located is flush with the target water level line.

[0074] Through the water head control method of the present invention, while achieving the sealing of the water inlet 101, the user can adjust the water head height by moving the magnet 203 up and down to drive the circular metal outlet ball 204 to move up and down along the inner wall of the circular constant pressure bottle 1. Compared with the existing technology, there is no need to move the circular constant pressure bottle 1 itself, the adjustment is more convenient, the adjustment accuracy is easier to control, and it is safe and efficient.

[0075] Next, the operation steps of the water head control method of the present invention are described in detail:

[0076] Step 1: Add water, close the water outlet valve 107, unplug the elastic sealing plug 201 on the top of the circular constant pressure bottle 1 (the air inlet hard tube 210 on the elastic sealing plug 201 does not need to be unplugged), and then add water to the required height (or fill it up) through the drainage tube according to the test water volume requirements.

[0077] Step 2: Air tightness check, open Figure 1 The water outlet valve 107 at the bottom of the medium-circular constant pressure bottle 1 meets the following conditions: first, press the air inlet hole 206 at the pull ring 209 with your hand, and if no water flows out of the water outlet valve 107; second, water flows out of the water outlet valve 107 when you move your finger away, indicating that the air tightness of the constant pressure bottle equipment is normal, and at this time, close the water outlet valve 107.

[0078] Step 3: Water head adjustment: Move up and down according to the water head height set in the test Figure 8 The magnet 203 shown will Figure 7 The air outlet 207 of the circular metal outlet ball 204 is flush with the outer wall scale 215 of the circular constant pressure bottle 1 corresponding to the preset water head height of the test, and the water head adjustment is completed. The preset water head height can refer to the water head height determined after calculating the actual water head loss.

[0079] Step 4: Constant pressure water supply. After the test starts, open the water outlet valve 107, and water flows from the water outlet 102 of the circular constant pressure bottle 1 to the water receiving body (soil column or soil box) through the rubber hose. When the soil surface water level is flush with the air outlet 207 of the circular constant pressure bottle 1, the circular constant pressure bottle 1 stops supplying water. When the soil surface water level is lower than the air outlet 207, the circular constant pressure bottle 1 supplies water to the water receiving body (such as soil column) again, and finally achieves the purpose of constant pressure water supply.

[0080] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0081] The above is a detailed introduction to a constant pressure bottle device and a water head control method based on magnetic drive provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the structure of the present invention and its core idea; at the same time, for general technical personnel in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A constant pressure bottle device based on magnetic drive, characterized in that: It comprises a circular constant pressure bottle (1) and an air intake assembly (2); wherein: The circular constant pressure bottle (1) is provided with a hollow chamber inside, a water injection port (101) is provided at the top, and a water outlet (102) is provided at the bottom, and the hollow chamber is communicated with the water injection port (101) and the water outlet (102) respectively; The circular constant pressure bottle (1) comprises a constant pressure bottle cover (103) and a constant pressure bottle cavity (104), wherein a circle of grooves (105) are arranged at the bottom end of the constant pressure bottle cover (103), and a circle of bosses (106) are arranged at the top end of the constant pressure bottle cavity (104), wherein the bosses (106) and the grooves (105) cooperate with each other and are connected as a whole, so that the connection between the constant pressure bottle cover (103) and the constant pressure bottle cavity (104) is sealed; It also includes a water outlet valve (107), wherein the water outlet valve (107) is installed at the water outlet (102), and a water-leakage-proof sealing member is provided between the water outlet valve (107) and the water outlet (102); The air intake assembly (2) comprises: an elastic sealing plug (201), an air intake hose (202), a magnet (203) and a circular metal outlet ball (204) placed in the hollow chamber; One end of the elastic sealing plug (201) is inserted into the water injection port (101) and exerts radial pressure on the water injection port (101), and the other end is provided with a through hole (205) penetrating the elastic sealing plug (201); One end of the air inlet hose (202) is provided with an air inlet hole (206), and the other end passes through the through hole (205) and is fixed to the circular metal outlet balloon (204); The magnet (203) faces the circular metal outlet ball (204) and is attached to the outer wall of the circular constant pressure bottle (1) to generate an adsorption force on the circular metal outlet ball (204); The circular metal outlet ball (204) faces the magnet (203) and is adsorbed on the inner wall of the circular constant pressure bottle (1). The circular metal outlet ball (204) is provided with a plurality of interconnected air outlet holes (207), and the air outlet holes (207) are connected to the air inlet hole (206) through the air inlet hose (202).

2. The constant pressure bottle equipment according to claim 1, characterized in that: The circular metal outlet balloon (204) is provided with a hollow cavity and a sleeve (208) inside, the hollow cavity and the sleeve (208) are in communication, and the sleeve (208) is fixed to and in communication with the air inlet hose (202); The plurality of air outlet holes (207) are evenly distributed on the outer surface of the circular metal air outlet ball (204) and are connected to the hollow cavity.

3. The constant pressure bottle equipment according to claim 1, characterized in that: The air intake assembly (2) further comprises a pull ring (209) and an air intake hard pipe (210); One end of the air intake hose (202) provided with an air intake hole (206) is fixed to one end of the air intake hard tube (210), and the other end of the air intake hard tube (210) is fixed to the outer wall of the pull ring (209), and the air intake hole (206) is opened on the pull ring (209).

4. The constant pressure bottle equipment according to any one of claims 1 to 3, characterized in that: The length of the air intake hose (202) is greater than or equal to 1.5 times the height of the circular constant pressure bottle (1).

5. The constant pressure bottle equipment according to claim 1, characterized in that: An elastic airtight gasket (211) is also provided between the elastic sealing plug (201) and the water injection port (101); A circle of annular grooves (212) are also provided along the inner wall of the water injection port (101), the annular grooves (212) are coaxial with the water injection port (101), and the elastic airtight gasket (211) is embedded in the annular grooves (212).

6. The constant pressure bottle equipment according to claim 1, characterized in that: The magnet (203) comprises a magnet block (213) and a handle (214); one end face of the magnet block (213) is an arc-shaped concave surface, the arc-shaped concave surface is in contact with the outer wall of the circular constant pressure bottle (1), and the other end face is fixed to the handle (214).

7. A water head control method, characterized in that: Applicable to the constant pressure bottle device according to any one of claims 1 to 6, the method comprising: Adjusting the height according to a preset water head, and determining a target water level line on the circular constant pressure bottle (1); The magnet (203) is moved along the axial direction of the circular constant pressure bottle (1) so that the horizontal plane where the geometric center of the air outlet hole (207) of the circular metal air outlet ball (204) is located is flush with the target water level line.

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