A water and medicine distribution device

Abstract

The present invention relates to the technical field of sewage treatment, and particularly to a water distribution and chemical dosing device, which can be used for anti-fouling and plugging prevention of a Fenton fluidized bed reactor. The water distribution and chemical dosing device includes a water collecting pipe, a water dispersing pipe and a water dispersing switch mechanism. A plurality of water inlet holes are arranged on the water collecting pipe; the water dispersing pipe is communicated with the water collecting pipe, and the water dispersing pipe is provided with water dispersing holes; the water dispersing switch mechanism is adapted to move relative to the water dispersing pipe to switch between a blocking position and an avoiding position. In the blocking position, the water dispersing switch mechanism blocks the water dispersing holes to close the water dispersing holes. In the avoiding position, the water dispersing switch mechanism avoids the water dispersing holes to open the water dispersing holes. When the reactor is operating, the water dispersing switch mechanism controls the opening of the water dispersing holes, and the liquid medicine flowing out of the water dispersing holes reacts and crystallizes in the reactor and adheres to the surface of the packing. When the reactor stops operating, the liquid medicine stops entering the water collecting pipe, and the water dispersing switch mechanism controls the closing of the water dispersing holes, so that the crystal packing outside the water dispersing holes cannot flow back into the water distribution and chemical dosing device, fundamentally solving the problem of backflow of crystal packing.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to a water distribution and chemical dosing device, which can be used for anti-fouling and anti-blocking of a Fenton fluidized bed reactor. Background Art

[0002] The Fenton fluidized bed reactor has a relatively wide application in the field of water treatment. During its operation, it is necessary to utilize the reaction of ferrous ions and hydrogen peroxide to generate free radicals with high oxidation ability, and further oxidize and decompose the organic matter in the wastewater. The Fenton fluidized bed uses a water distribution and chemical dosing device to fully and evenly mix water with two kinds of chemical liquids, and attach the generated FeOOH crystals to the surface of the packing, and stir the water body in the reactor to fully vulcanize the crystal packing, greatly improving the reaction efficiency. Therefore, the water distribution and chemical dosing device is an extremely important component in the Fenton fluidized bed reactor system, and has three functions: uniform water distribution, chemical liquid mixing, and packing vulcanization.

[0003] The forms of traditional water distribution and chemical dosing devices can be divided into water distribution orifice plates, perforated pipes, and water distribution heads. The forms of water distribution orifice plates and perforated pipes are rarely used in fluidized bed reactors because they cannot achieve uniform chemical liquid mixing; the form of the water distribution head can fully meet the three functional requirements of the fluidized bed reactor and is widely used in fluidized bed reactors. However, during the actual operation process, the crystal packing in the water distribution and chemical dosing device in the form of a water distribution head is prone to flowing back into the water distribution head, causing fouling and blocking of the water distribution head, affecting the water distribution and chemical dosing effect, and the packing will also enter other cavities inside the equipment, affecting and endangering the normal operation of the equipment. Summary of the Invention

[0004] The present invention provides a water distribution and chemical dosing device to solve the defect that the crystal packing in the water distribution and chemical dosing device in the form of a water distribution head in the prior art is prone to flowing back into the water distribution head, causing fouling and blocking of the water distribution head and affecting the water distribution and chemical dosing effect, and to achieve the stable operation of the water distribution and chemical dosing device.

[0005] The present invention provides a water distribution and chemical dosing device, including:

[0006] A water collecting pipe, on which a plurality of water inlet holes are provided;

[0007] A water dispersing pipe, which is communicated with the water collecting pipe, and on which water dispersing holes are provided;

[0008] A water dispersing switch mechanism, which is adapted to move relative to the water dispersing pipe to switch between a blocking position and an avoidance position. In the blocking position, the water dispersing switch mechanism blocks the water dispersing holes to close the water dispersing holes, and in the avoidance position, the water dispersing switch mechanism avoids the water dispersing holes to open the water dispersing holes.

[0009] A water distribution and chemical dosing device provided by the present invention, one end of the water dispersion pipe is connected to the water outlet end of the water collection pipe, and a plurality of water dispersion holes are arranged circumferentially on the pipe wall of the water dispersion pipe.

[0010] A water distribution and chemical dosing device provided by the present invention, the water dispersion switch mechanism includes:

[0011] A water dispersion pipe head, sleeved on the end of the water dispersion pipe away from the water collection pipe, and pressure balance holes are provided on the water dispersion pipe head;

[0012] A plugging member, located inside the water dispersion pipe and capable of moving along the internal channel of the water dispersion pipe to block or avoid the water dispersion holes.

[0013] A water distribution and chemical dosing device provided by the present invention, a boss is provided inside the water dispersion pipe to form a first limiting position, and the inner diameter of the connection between the water dispersion pipe head and the water dispersion pipe shrinks to form a second limiting position; the plugging member is adapted to switch positions between the first limiting position and the second limiting position;

[0014] When the water dispersion switch mechanism is in the blocking position, the plugging member is located at the first limiting position, and the plugging member blocks the water dispersion holes;

[0015] When the water dispersion switch mechanism is in the avoiding position, the plugging member is located at the second limiting position, and the plugging member avoids the water dispersion holes.

[0016] A water distribution and chemical dosing device provided by the present invention, the plugging member is a spherical body or a columnar body.

[0017] A water distribution and chemical dosing device provided by the present invention, the pressure balance holes are located on the side wall of the water dispersion pipe head, there are an even number of pressure balance holes, and they are arranged symmetrically in pairs.

[0018] A water distribution and chemical dosing device provided by the present invention, the pressure balance holes obliquely penetrate the side wall of the water dispersion pipe head, and the inclination direction is inclined from the inside of the water dispersion pipe head outward towards the direction close to the water dispersion pipe; the aperture of the pressure balance holes is not greater than 2 mm.

[0019] A water distribution and chemical dosing device provided by the present invention, the water dispersion switch mechanism includes a sliding sleeve sleeved outside the water dispersion pipe and a plug installed at the end of the sliding sleeve;

[0020] When the water dispersion switch mechanism is in the blocking position, the sliding sleeve blocks the water dispersion holes;

[0021] When the water dispersion switch mechanism is in the avoiding position, the sliding sleeve avoids the water dispersion holes.

[0022] According to a water distribution and chemical dosing device provided by the present invention, an annular clamping portion is arranged inside one end of the water distribution pipe sleeved by the sliding sleeve, and a limiting convex portion is arranged on the outer peripheral surface of the water distribution pipe far from the water collecting pipe. The limiting convex portion is used to cooperate with the annular clamping portion to limit the sliding sleeve.

[0023] According to a water distribution and chemical dosing device provided by the present invention, the water collecting pipe is arranged vertically, and the water collecting pipe penetrates through the upper mounting plate and the lower mounting plate which are arranged in parallel;

[0024] The water distribution pipe is sleeved outside the top end of the water collecting pipe, and the bottom end of the water distribution pipe touches the upper surface of the upper mounting plate; a fastener is sleeved on the lower part of the water collecting pipe, and the fastener touches the lower surface of the lower mounting plate;

[0025] The water inlet holes include an upper water collecting hole, a middle water collecting hole and a lower water collecting hole. The upper water collecting hole and the middle water collecting hole are arranged on the pipe wall of the water collecting pipe between the upper mounting plate and the lower mounting plate. The upper water collecting hole is close to the upper mounting plate, the middle water collecting hole is close to the lower mounting plate, and the lower water collecting hole is the bottom water inlet of the water collecting pipe.

[0026] A water distribution and chemical dosing device provided by the present invention can be used for anti-fouling and anti-blocking of a Fenton fluidized bed reactor. The opening and closing of the water distribution holes are controlled by a water distribution switch mechanism. During the normal operation of the fluidized bed reactor, the water distribution switch mechanism controls the water distribution holes to open, and the mixed chemical liquid flows normally. The chemical liquid flowing out of the water distribution holes reacts and crystallizes in the reactor and adheres to the surface of the packing. When the equipment stops running, the chemical liquid stops entering the water collecting pipe. At this time, the water distribution switch mechanism controls the water distribution holes to close, so that the crystal packing outside the water distribution holes cannot flow back into the water distribution and chemical dosing device, fundamentally solving the problem of reverse flow of the crystal packing. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0028] Figure 1 It is one of the structural schematic diagrams of the water distribution and chemical dosing device provided by the present invention, in which the plugging member is in the first limiting position;

[0029] Figure 2 It is one of the structural schematic diagrams of the water distribution and chemical dosing device provided by the present invention, in which the plugging member is in the second limiting position;

[0030] Figure 3It is the second schematic structural diagram of the water distribution and chemical dosing device provided by the present invention, wherein the plugging member is in the first limiting position;

[0031] Figure 4 It is the second schematic structural diagram of the water distribution and chemical dosing device provided by the present invention, wherein the plugging member is in the second limiting position;

[0032] Figure 5 It is the third schematic structural diagram of the water distribution and chemical dosing device provided by the present invention, wherein the sliding sleeve plugs the water dispersion holes;

[0033] Figure 6 It is the third schematic structural diagram of the water distribution and chemical dosing device provided by the present invention, wherein the sliding sleeve avoids the water dispersion holes.

[0034] Reference numerals:

[0035] 1, water collecting pipe; 11, water inlet hole; 111, upper water collecting hole; 112, middle water collecting hole; 113, lower water collecting hole; 2, water dispersion pipe; 21, water dispersion hole; 22, first limiting position; 23, second limiting position; 24, limiting convex part; 3, water dispersion switch mechanism; 31, water dispersion pipe sealing head; 311, pressure balance hole; 32, plugging member; 33, sliding sleeve; 331, annular clamping part; 34, plug; 4, upper mounting plate; 5, lower mounting plate; 6, fastener. Detailed implementation manners

[0036] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0037] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the embodiments of the present invention.

[0038] In the description of the embodiments of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "connected to" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific situations.

[0039] In the embodiments of the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0040] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0041] The following Figures 1 to 6 describes the structure and specific implementation process of the water distribution and chemical dosing device of the present invention.

[0042] In a specific embodiment of the present invention, a water distribution and chemical dosing device is provided. Referring to Figure 1 as shown, it includes a water collection pipe 1, a water dispersion pipe 2, and a water dispersion switch mechanism 3. Among them, a plurality of water inlet holes 11 are provided on the water collection pipe 1; the water dispersion pipe 2 is communicated with the water collection pipe 1, and water dispersion holes 21 are provided on the water dispersion pipe 2; the water dispersion switch mechanism 3 is adapted to move relative to the water dispersion pipe 2 to switch between a blocking position and an avoidance position. In the blocking position, the water dispersion switch mechanism 3 blocks the water dispersion holes 21 to close the water dispersion holes 21, and in the avoidance position, the water dispersion switch mechanism 3 avoids the water dispersion holes 21 to open the water dispersion holes 21.

[0043] The water distribution and chemical dosing device in this embodiment can be used for anti-fouling and anti-blocking of the Fenton fluidized bed reactor. It can be understood that during the operation of the fluidized bed reactor, the mixed chemical liquid enters the water collection pipe 1 through the water inlet hole 11 of the water collection pipe 1, then flows into the water distribution pipe 2, and flows out from the water distribution holes 21 of the water distribution pipe 2. In the water distribution and chemical dosing device of this embodiment, a water distribution switch mechanism 3 is provided. The water distribution switch mechanism 3 is used to control the opening and closing of the water distribution holes 21. During the normal operation of the fluidized bed reactor, the water distribution switch mechanism 3 controls the opening of the water distribution holes 21, and the mixed chemical liquid flows normally. The chemical liquid flowing out from the water distribution holes 21 reacts and crystallizes in the reactor and adheres to the surface of the packing. When the equipment stops running, the chemical liquid stops entering the water collection pipe 1. At this time, the water distribution switch mechanism 3 controls the closing of the water distribution holes 21, so that the crystal packing outside the water distribution holes 21 cannot flow back into the water distribution and chemical dosing device, fundamentally solving the problem of reverse flow of crystal packing.

[0044] In some examples, the water distribution pipe 2 is externally connected to the water outlet end of the water collection pipe 1, and a plurality of water distribution holes 21 are arranged circumferentially on the pipe wall of the water distribution pipe 2. Specifically, four water distribution holes 21 can be arranged circumferentially along the pipe wall of the water distribution pipe 2, and the four water distribution holes 21 are arranged in a cross-symmetrical manner, and the aperture size of the water distribution holes 21 is 8.5 mm.

[0045] The water distribution switch mechanism 3 is the key structure for controlling the opening and closing of the water distribution holes 21. The water distribution switch mechanism 3 can be arranged inside the water distribution pipe 2 or outside the water distribution pipe 2. The following is a structural description of the water distribution switch mechanism 3 in combination with specific embodiment structures.

[0046] On the basis of the above embodiment, in some embodiments of the water distribution and chemical dosing device of the present invention, the water distribution switch mechanism 3 includes a water distribution pipe head 31 and a plugging member 32. Among them, the water distribution pipe head 31 is sleeved on the end of the water distribution pipe 2 far from the water collection pipe 1, and at least one pressure balance hole 311 is provided on the water distribution pipe head 31; the plugging member 32 is located inside the water distribution pipe 2 and can move along the internal channel of the water distribution pipe 2 to block or avoid the water distribution holes 21. Specifically, a boss is provided inside the water distribution pipe 2 to form a first limiting position 22, and the inner diameter of the connection between the water distribution pipe head 31 and the water distribution pipe 2 contracts to form a second limiting position 23; the plugging member 32 is adapted to switch positions between the first limiting position 22 and the second limiting position 23.

[0047] When the water distribution switch mechanism 3 is in the plugging position, the plugging member 32 is located at the first limiting position 22, and the plugging member 32 plugs the water distribution holes 21; when the water distribution switch mechanism 3 is in the avoidance position, the plugging member 32 is located at the second limiting position 23, and the plugging member 32 avoids the water distribution holes 21.

[0048] It can be understood that in this embodiment, the water dispersing switch mechanism 3 is located inside the water dispersing pipe 2, and the upper end of the water dispersing pipe 2 is sealed by the water dispersing pipe head 31, so that the plugging member 32 moves up and down in the internal space formed by the water dispersing pipe 2 and the water dispersing pipe head 31, but will not fall out.

[0049] Refer to Figure 1 and Figure 2 for the example structure of Figure 1 and Figure 2 which shows that the plugging member 32 is a spherical body, and the diameter of the spherical plugging member 32 is equal to or slightly smaller than the inner diameter of the water dispersing pipe 2. Initially, as shown in Figure 1 the plugging member 32 is located at the first limiting position 22, and the water dispersing holes 21 are blocked by the plugging member 32.

[0050] After the fluidized bed reactor equipment is started, the mixed liquid medicine collected by the water collecting pipe 1 enters the water dispersing pipe 2 from the water collecting pipe 1. Since the diameter of the plugging member 32 is equal to or slightly smaller than the inner diameter of the water dispersing pipe 2, the mixed liquid medicine can bypass the plugging member 32 from the edge to form a flow-around resistance or directly push the plugging member 32 upward, so that the plugging member 32 moves from the first limiting position 22 to the second limiting position 23, as shown in Figure 2 After the plugging member 32 reaches the second limiting position 23, the water dispersing holes 21 are opened. Due to the pressure balance hole 311, the pressure above the plugging member 32 is equal to the pressure outside the water distribution and medicine distribution device, while there is continuous mixed liquid medicine entering below the plugging member 32, so the pressure is much greater than the pressure above the plugging member 32, and the plugging member 32 is always stuck at the second limiting position 23, and the mixed liquid medicine continuously flows out from the water dispersing holes 21 to participate in the crystallization reaction of the external filler.

[0051] When the equipment stops, the mixed liquid medicine stops entering the water collecting pipe 1, and there is no more mixed liquid medicine entering the space below the plugging member 32. At this time, due to the balance of the upper and lower pressures and its own gravity, the plugging member 32 falls back to the first limiting position 22, that is, returns to the position shown in Figure 1 At the first limiting position 22, the plugging member 32 just blocks the water dispersing holes 21, so that the external crystal filler cannot flow back into the water distribution and medicine distribution device through the water dispersing holes 21.

[0052] Refer to Figure 3 and Figure 4 for the example structure of, the plugging member 32 is a cylindrical structure, and its principle is similar to that of the spherical plugging member 32 shown in Figure 1 and Figure 2 so it will not be described in detail here. The specific process can refer to the implementation process of the above spherical plugging member 32.

[0053] It should be understood that, whether it is a spherical plugging member 32 or a cylindrical plugging member 32, both act on the inside of the water dispersion pipe 2. When the equipment is running, the pressure below the plugging member 32 is greater than the pressure above, and the plugging member 32 is lifted to the second limit position 23 to open the water dispersion hole 21. When the equipment stops running, the pressure below the plugging member 32 disappears. Under the action of the pressure above, the plugging member 32 falls back to the first limit position 22 to block the water dispersion hole 21. Among them, the pressure above the plugging member 32 is connected to the outside world through the pressure balance hole 311. When the outside world connected to the pressure balance hole 311 has a certain pressure, the water and medicine distribution device of the present invention can be arranged in any direction. When the outside world connected to the pressure balance hole 311 is atmospheric pressure, the water and medicine distribution device of the present invention needs to be arranged vertically. When the equipment stops, the plugging member 32 can fall back by its own gravity.

[0054] In the above two embodiments, at least one pressure balance hole 311 is provided on the diffuser head 31. In some specific examples, the pressure balance hole 311 is located on the side wall of the diffuser head 31. There are an even number of pressure balance holes 311, which are arranged symmetrically in pairs, for example, two or four. Figures 1 to 4 In the structure, the pressure balance hole 311 obliquely penetrates the side wall of the water diffusion pipe head 31, and the inclination direction is inclined from the inside of the water diffusion pipe head 31 to the outside toward the direction close to the water diffusion pipe 2; the aperture size of the pressure balance hole 311 is 2 mm. Such a setting can prevent the crystal filler from flowing back into the water and medicine distribution device from the pressure balance hole 311 to a certain extent, and the blocking member 32 is at the first limit position 22, blocking the water diffusion hole 21 to form a check mechanism, and the blocking member 32 also blocks the end of the water receiving pipe 1 at the first limit position 22 to form a second check mechanism, thereby strengthening the function of preventing backflow.

[0055] In addition to being arranged inside the water dispersion pipe 2, the water dispersion switch mechanism 3 can also be arranged outside the water dispersion pipe 2 to block and open the water dispersion hole 21. In other embodiments, see Figure 5 and Figure 6 As shown, the water-sprinkling switch mechanism 3 includes a sliding sleeve 33 slidably mounted on the outside of the water-sprinkling pipe 2 and a plug 34 installed at the end of the sliding sleeve 33 ; when the water-sprinkling switch mechanism 3 is in the blocking position, the sliding sleeve 33 blocks the water-sprinkling hole 21 ; when the water-sprinkling switch mechanism 3 is in the avoiding position, the sliding sleeve 33 avoids the water-sprinkling hole 21 .

[0056] Specifically, an annular clamping portion 331 is provided inside one end of the water-dispersing pipe 2 sleeved with the sliding sleeve 33. A limiting convex portion 24 is provided on the outer peripheral surface of the water-dispersing pipe 2 away from the water-collecting pipe 1. The limiting convex portion 24 is used to cooperate with the annular clamping portion 331 to limit the sliding sleeve 33. It should be understood that in the plugging structure composed of the plug 34 and the annular clamping portion 331 in this embodiment, a pressure balance hole is also provided (the structure is the same as the pressure balance hole 311 in the water-dispersing pipe head 31 in the above embodiment and is not shown in the figure). It can be provided on the plug 34 or on the annular clamping portion 331. The pressure balance hole here also plays the role of balancing pressure.

[0057] See Figure 5 As shown, initially, the entire sliding sleeve 33 is sleeved outside the water-dispersing pipe 2. At this time, the sliding sleeve 33 plugs the water-dispersing holes 21.

[0058] After the fluidized bed reactor equipment is started, the mixed liquid medicine collected by the water-collecting pipe 1 enters the water-dispersing pipe 2 from the water-collecting pipe 1. The mixed liquid medicine entering the water-dispersing pipe 2 continues to move upward and acts on the plug 34. As the mixed liquid medicine continuously enters, the mixed liquid medicine will push the plug 34 and the sliding sleeve 33 to move upward along the outer periphery of the water-dispersing pipe 2 until the annular clamping portion 331 of the sliding sleeve 33 reaches the limiting convex portion 24 of the water-dispersing pipe 2. At this time, see Figure 6 As shown, the annular clamping portion 331 abuts against and is limited by the limiting convex portion 24, and the water-dispersing holes 21 are opened. As the mixed liquid medicine continuously enters, the plug 34 and the sliding sleeve 33 are always under the action of the pushing force and remain Figure 6 In the state shown, the mixed liquid medicine continuously flows out from the water-dispersing holes 21 and participates in the external filler crystallization reaction.

[0059] When the equipment stops, the mixed liquid medicine stops entering the water-collecting pipe 1. The plug 34 and the sliding sleeve 33 are no longer under the pushing force of the mixed liquid medicine. Under the action of their own gravity (or the external pressure on the plug 34 and the sliding sleeve 33), they start to move downward until they return to the initial state, that is, Figure 5 In the state shown, at this time, the sliding sleeve 33 forms a plug for the water-dispersing holes 21 again, so that the external crystal filler cannot flow back into the water distribution and medicine distribution device through the water-dispersing holes 21.

[0060] Based on the structures of the water distribution and medicine distribution devices in the above several embodiments, in this embodiment, the water-collecting pipe 1 is vertically arranged, and the water-collecting pipe 1 passes through the parallel upper mounting plate 4 and lower mounting plate 5. The water-dispersing pipe 2 is sleeved outside the top end of the water-collecting pipe 1, and the bottom end of the water-dispersing pipe 2 touches the upper surface of the upper mounting plate 4; a fastener 6 is sleeved on the lower part of the water-collecting pipe 1, and the fastener 6 touches the lower surface of the lower mounting plate 5.

[0061] The water-dispersing pipe 2 is externally connected to the water-collecting pipe 1. The outer diameter of the water-dispersing pipe 2 is larger than that of the water-collecting pipe 1, so that a frustum is formed at the connection between the water-dispersing pipe 2 and the water-collecting pipe 1. This frustum cooperates with the fastener 6, as well as the upper mounting plate 4 and the lower mounting plate 5, enabling the water and chemical distribution device to be fixed on the upper mounting plate 4 and the lower mounting plate 5. Among them, in order to ensure the sealing performance, sealing gaskets are provided on the assembly surface of the bottom end of the water-dispersing pipe 2 and the upper mounting plate 4, as well as on the assembly surface of the fastener 6 and the lower mounting plate 5. The gasket material can be selected as a flexible material. Additionally, in order to ensure the stability of the installation, in some examples, the fastener 6 can include fastener A and fastener B. The two fasteners are jointly sleeved outside the water-collecting pipe 1 to form an anti-loosening structure.

[0062] In this embodiment, the water inlet holes 11 include an upper water-collecting hole 111, a middle water-collecting hole 112, and a lower water-collecting hole 113. Among them, one upper water-collecting hole 111 can be provided, with a hole diameter of 7 mm. The opening angle is perpendicular to the axial direction of the water-collecting pipe 1, and the position is close to the lower surface of the upper mounting plate 4. It can be used to collect the liquid medicine in the middle layer between the upper mounting plate 4 and the lower mounting plate 5, and release the gas in the middle layer to the uppermost cylinder through the water and chemical distribution device as much as possible, and finally release it into the air. Two middle water-collecting holes 112 can be provided, with a hole diameter of 7 mm. The two middle water-collecting holes 112 are arranged oppositely, the opening angle is perpendicular to the axial direction of the water-collecting pipe 1, and the position is close to the upper surface of the lower mounting plate 5. They can be used to collect the liquid medicine in the middle layer between the upper mounting plate 4 and the lower mounting plate 5. The lower water-collecting hole 113 is the bottom water inlet of the water-collecting pipe 1, and can be used to collect the liquid medicine in the lower layer of the lower mounting plate 5.

[0063] Combined with the structures in the above several embodiments or examples, for the water and chemical distribution device provided by the present invention, when there is a risk of backflow due to the equipment stopping or liquid volume fluctuation, the water-dispersing switch mechanism 3 will immediately fall back to block the water-dispersing holes 21, blocking the crystal filler outside the overall water and chemical distribution device, fundamentally solving the problem of crystal filler backflow. Moreover, in some examples, the water-dispersing switch mechanism 3 can also form a second check mechanism, strengthening the function of preventing backflow. For the water and chemical distribution device of the present invention, during the operation of the equipment, based on the principle of pressure balance difference, the water-dispersing switch mechanism 3 is stably held at the limit position, avoiding the collision and wear of the water-dispersing switch mechanism 3 inside the water-dispersing pipe 2, improving the service life of the water and chemical distribution device. Moreover, through the setting of the mounting plate and the fastener, the loosening and falling off of the water and chemical distribution device caused by vibration can be avoided, improving the operating stability.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A water and medicine dispensing device, characterized in that: include: A water receiving pipe (1), wherein a plurality of water inlet holes (11) are provided on the water receiving pipe (1); A water dispersion pipe (2), the water dispersion pipe (2) being connected to the water receiving pipe (1), the water dispersion pipe (2) being provided with a water dispersion hole (21), and a boss being provided inside the water dispersion pipe (2) to form a first limiting position (22); A water dispersion switch mechanism (3), the water dispersion switch mechanism (3) being adapted to move relative to the water dispersion pipe (2) to switch between a blocking position and an avoidance position, the water dispersion switch mechanism (3) comprising a water dispersion pipe sealing head (31) and a blocking member (32), the water dispersion pipe sealing head (31) being sleeved on an end of the water dispersion pipe (2) away from the water receiving pipe (1), the water dispersion pipe sealing head (31) being provided with a pressure balancing hole (311), the pressure balancing hole (311) being obliquely penetrated through a side wall of the water dispersion pipe sealing head (31), and the inclination direction being inclined from the inside of the water dispersion pipe sealing head (31) to the outside in a direction close to the water dispersion pipe (2); the water dispersion pipe sealing head (31) and the water dispersion pipe sealing head (32) being arranged on the side wall of the water dispersion pipe sealing head (31), and the pressure balancing hole (311) being inclined from the inside of the water dispersion pipe sealing head (31) to the outside in a direction close to the water dispersion pipe (2); The inner diameter of the connection part of the pipe (2) shrinks to form a second limit position (23); the blocking member (32) is located in the water dispersion pipe (2), and the blocking member (32) is suitable for switching between the first limit position (22) and the second limit position (23); when the water dispersion switch mechanism (3) is in the blocking position, the blocking member (32) is located in the first limit position (22), and the blocking member (32) blocks the water dispersion hole (21); when the water dispersion switch mechanism (3) is in the avoidance position, the blocking member (32) is located in the second limit position (23), and the blocking member (32) avoids the water dispersion hole (21).

2. The water and medicine dispensing device according to claim 1, characterized in that: One end of the water-spreading pipe (2) is connected to the water outlet end of the water-collecting pipe (1), and a plurality of water-spreading holes (21) are arranged along the circumferential direction on the pipe wall of the water-spreading pipe (2).

3. The water and medicine dispensing device according to claim 1, characterized in that: The blocking member (32) is a spherical body or a cylindrical body.

4. The water and medicine dispensing device according to claim 1, characterized in that: The pressure balance holes (311) are in an even number and are symmetrically arranged in pairs.

5. The water and medicine dispensing device according to claim 4, characterized in that: The diameter of the pressure balance hole (311) is no greater than 2 mm.

6. The water and medicine dispensing device according to any one of claims 1 to 5, characterized in that: The water collecting pipe (1) is arranged vertically, and the water collecting pipe (1) passes through an upper mounting plate (4) and a lower mounting plate (5) which are arranged in parallel; The water-spreading pipe (2) is sleeved on the outside of the top end of the water-collecting pipe (1), and the bottom end of the water-spreading pipe (2) contacts the upper surface of the upper mounting plate (4); a fastener (6) is sleeved on the lower part of the water-collecting pipe (1), and the fastener (6) contacts the lower surface of the lower mounting plate (5); The water inlet hole (11) comprises an upper water receiving hole (111), a middle water receiving hole (112) and a lower water receiving hole (113); the upper water receiving hole (111) and the middle water receiving hole (112) are arranged on the wall of the water receiving pipe (1) between the upper mounting plate (4) and the lower mounting plate (5); the upper water receiving hole (111) is close to the upper mounting plate (4), the middle water receiving hole (112) is close to the lower mounting plate (5), and the lower water receiving hole (113) is the bottom water inlet of the water receiving pipe (1).

Images