Waste liquid treatment spraying device with self-cleaning function

Abstract

The utility model provides a waste liquid treatment spraying device with a self-cleaning function. The waste liquid treatment spraying device comprises a slag separator (3), a waste liquid chamber (4) and a mixing chamber (6), the end part of the waste liquid chamber (4) is provided with a waste liquid outlet (451) leading to the mixing chamber (6), and the other part is reserved outside and is provided with a waste liquid inlet; the slag remover (3) comprises a slag removing rod (32) and a supporting seat I (33); the supporting seat I (33) is fixed on the waste liquid chamber (4); the deslagging rod (32) is supported by a supporting seat I (33), one end of the deslagging rod (32) is arranged in the waste liquid chamber (4) and can penetrate into the waste liquid outlet (451), and the other end of the deslagging rod (32) is connected with a motor (31) outside the waste liquid chamber (4); the slag removal rod (32) is axially provided with a blind hole as a medium channel, and an opening leads to the mixing chamber (6); and the motor (31) can drive the deslagging rod (32) to rotate and move towards the waste liquid outlet (451) at the same time.

Description

Technical Field

[0001] The utility model belongs to the technical field of purification equipment and relates to a waste liquid treatment injection device with a self-cleaning function. Background Art

[0002] Laboratory wastewater primarily comes from the research laboratories of various scientific research institutions and the research and teaching laboratories of universities. Its composition is complex, and it contains a variety of insoluble flocculants, heavy metals, and solid particles. During the thermal cracking process, these flocculants, heavy metals, and solid particles in the wastewater easily accumulate at the wastewater nozzle of the spray gun after being heated. This can cause blockage, resulting in equipment failure and frequent shutdowns to clean the gun.

[0003] Therefore, there is an urgent need for a waste liquid treatment injection device with a self-cleaning function. Utility Model Content

[0004] In response to the deficiencies in the prior art, the utility model provides a waste liquid treatment injection device with a self-cleaning function, which can mechanically remove precipitates at the waste liquid outlet and can clean the injection device without stopping the machine.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] The utility model provides a waste liquid treatment injection device with a self-cleaning function, which comprises: a slag remover, a waste liquid chamber and a mixing chamber;

[0007] A waste liquid outlet is provided at one end of the waste liquid chamber, leading to the mixing chamber, and a waste liquid inlet is provided at the other end;

[0008] The slag remover comprises: a slag remover rod and a support base 1;

[0009] The support seat 1 is fixed to the outside of the waste liquid chamber; the slag removal rod is supported by the support seat 1, one end of which is inside the waste liquid chamber and the end can penetrate the waste liquid outlet, and the other end is connected to the motor outside the waste liquid chamber; the slag removal rod is axially opened with a blind hole as a medium channel, and the open end of the medium channel leads to the mixing chamber; the medium channel is connected to the medium interface for injecting gas medium;

[0010] The operation of the motor can drive the slag removal rod to rotate and move linearly toward the waste liquid outlet at the same time.

[0011] More preferred:

[0012] The self-cleaning spray device also includes an air chamber;

[0013] The air chamber is a volute structure, and is provided with an air outlet communicating with the mixing chamber; the air chamber is tangentially connected to the air inlet for introducing air.

[0014] More preferred:

[0015] The air chamber includes: an air chamber shell; an air register; a support seat II;

[0016] The air inlet of the air chamber is equipped with an air register; the air register is installed on the air chamber shell through a support seat II.

[0017] More preferred:

[0018] The air regulator includes: an air regulating movable baffle, a lower baffle, a rotating shaft, an upper baffle, and a driver;

[0019] The upper baffle and the lower baffle are fixed alternately on the inner walls of the left and right sides of the air chamber shell; the air regulating movable baffle is arranged between the upper baffle and the lower baffle;

[0020] The air regulating movable baffle is connected to the rotating shaft, which is supported by a support seat II fixed on the front and rear side panels of the air chamber housing and can be driven by a driver to rotate;

[0021] The driver drives the rotating shaft to rotate, which can drive the air-adjusting movable baffle to rotate together, and then the gap between the air-adjusting movable baffle and the upper baffle and the lower baffle can change.

[0022] More preferred:

[0023] One or more support frames for supporting the slag removal rod are provided inside the waste liquid chamber;

[0024] The support frame includes a shaft sleeve and a plurality of wing plates evenly arranged on the outside of the shaft sleeve; the shaft hole inside the shaft sleeve can pass through the slag removal rod; and the wing plates are connected to the inner wall of the waste liquid chamber.

[0025] More preferred:

[0026] The waste liquid chamber includes a blocking plate I; a waste liquid chamber shell and a blocking plate II;

[0027] The waste liquid chamber shell is a hollow shell with plugging plates I and II at both ends. Plugging plate I has a through hole that can pass through the slag remover rod; plugging plate II has a waste liquid outlet; and the waste liquid chamber shell has a waste liquid inlet.

[0028] More preferred:

[0029] The waste liquid outlet on the blocking plate II is in an expanded structure; the large diameter of the expanded structure faces the interior of the waste liquid chamber, and the small diameter faces the mixing chamber;

[0030] The slag removal rod has an end portion with a contracted structure, and the contracted structure cooperates with the expanded structure of the waste liquid outlet.

[0031] More preferred:

[0032] The waste liquid outlet is provided with multiple; the ends of the corresponding slag removal rods are fixed with multiple slag removal components;

[0033] The slag removal component includes a frame and a slag removal head, the frame is fixed on the slag removal rod, and the slag removal head is fixed on the frame. The end of each slag removal head has a shrinking structure used in conjunction with the expanding structure of the waste liquid outlet.

[0034] More preferred:

[0035] The waste liquid treatment injection device with a self-cleaning function further comprises a filter arranged at the waste liquid inlet.

[0036] More preferred:

[0037] The waste liquid treatment injection device with a self-cleaning function further comprises: an adsorber arranged at the waste liquid inlet.

[0038] It can be seen from the above technical solution of the utility model that the utility model has the following beneficial effects:

[0039] 1. The utility model is provided with a slag remover, which can mechanically remove the precipitate at the waste liquid outlet and can clean the injection device without stopping the machine.

[0040] 2. The utility model provides an air chamber, which enables the compressed air or steam entering the mixing chamber to enter in a vortex form. Under the action of the vortex gas, the slag at the waste liquid outlet and the mixing chamber wall can be powerfully removed, and the injection device can be cleaned regularly without stopping the machine.

[0041] 3. The utility model first filters and absorbs the waste liquid through the filter and adsorber to remove most of the flocculent matter, heavy metals and solid particles in the waste liquid, minimize the impurities in the waste liquid, and prevent the particles in the waste liquid from precipitating in the injection device and clogging the nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 This is a structural diagram of the self-cleaning waste liquid treatment injection device of the utility model;

[0043] Figure 2-1 This is a front view of the air register structure in the present utility model;

[0044] Figure 2-2 This is a schematic structural diagram of the air register in the present invention in a sealed state;

[0045] Figure 2-3 This is a structural diagram of the air register in the utility model in the air intake state;

[0046] Figure 3It is a structural schematic diagram of the support frame in the utility model;

[0047] Figure 4 It is a structural schematic diagram of the slag removal rod in the utility model;

[0048] Figure 5 This is a schematic structural diagram of the blocking plate II in the present invention;

[0049] Figure 6 This is a structural diagram of the four slag removal components and the slag removal rod.

[0050] Reference numerals:

[0051] Filter 1, adsorber 2, cleaner 3, waste liquid chamber 4, wind chamber 5 and mixing chamber 6;

[0052] Motor 31, slag removal rod 32, support base I33; medium interface 321;

[0053] Waste liquid inlet 41, blocking plate I 42, waste liquid chamber shell 43, support frame 44, blocking plate II 45; waste liquid outlet 451;

[0054] Air chamber housing 51, air register 52, support base II 53;

[0055] Air regulating movable baffle 521 , lower baffle 522 , rotating shaft 523 , upper baffle 524 , and driver 525 . DETAILED DESCRIPTION

[0056] The following embodiments are used to further describe the specific embodiments of the present invention in conjunction with the accompanying drawings and examples. The following embodiments are only used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0057] Terms such as "upper," "lower," "left," "right," "inner," "outer," "front," "back," "head," and "tail" in this application are based on the directions or positions shown in the accompanying drawings. The corresponding positions may vary depending on the drawings, and should not be construed as limiting the scope of protection.

[0058] In this utility model, the terms "installed," "connected," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, integral connection, mechanical connection, electrical connection, or mutual communication. They can also refer to direct connection or indirect connection through an intermediate medium. They can also refer to internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0059] Example 1:

[0060] The utility model provides a waste liquid treatment spray device with a self-cleaning function. The structure of the self-cleaning spray device is as follows: Figure 1 As shown, it includes: a filter 1, an adsorber 2, a slag remover 3, a waste liquid chamber 4, a wind chamber 5 and a mixing chamber 6.

[0061] The relationship between the above components:

[0062] The waste liquid chamber 4, the wind chamber 5 and the mixing chamber 6 constitute the spray gun body; the wind chamber 5 is a volute structure, and the wind chamber is provided with an air outlet connected to the mixing chamber 6; the wind chamber is tangentially connected to the air inlet for introducing air; a part of the waste liquid chamber 4 is inside the wind chamber 5 and the mixing chamber 6, and a waste liquid outlet is provided at the end to lead to the mixing chamber 6, and the other part remains outside and has a waste liquid inlet; one end of the slag remover 3's slag remover rod is inside the waste liquid chamber 4, and the end can pass through the waste liquid outlet 451, and the other end is outside the waste liquid chamber 4 and can be driven by the motor to rotate and move linearly at the same time; the slag remover rod is axially provided with a blind hole as a medium channel, and the open end of the medium channel leads to the mixing chamber 6; the medium channel is connected to the medium interface for injecting gas medium.

[0063] The waste liquid inlet of the waste liquid chamber 4 is connected to the filter 1 and the adsorber 2 in sequence.

[0064] The functions and structures of each component are as follows:

[0065] 1. Mixing chamber 6:

[0066] Air and waste liquid can be mixed in the mixing chamber 6 .

[0067] The mixing chamber 6 is connected to the air chamber 5, and the air chamber of the air chamber 5 is provided with an air outlet communicating with the mixing chamber 6; the mixing chamber 6 adopts a large accommodation space, which can enhance the mixing of waste liquid and air.

[0068] 2. Air Chamber 5

[0069] The air chamber 5 is used to introduce air and make the incoming air generate turbine rotation, and then send it to the mixing chamber 6. The air chamber 5 adopts a volute structure, which can make the incoming air generate turbine rotation, strengthen the mixing of air and waste liquid, and is more conducive to the complete and sufficient treatment of the waste liquid.

[0070] The structure of the air chamber 5 remains the same Figure 1 As shown, it includes: an air chamber shell 51; an air register 52; and a support base II 53.

[0071] The air inlet of the air chamber 5 is equipped with an air register 52. The air register 52 is mounted on the air chamber housing 51 via a support base II 53. The support base II 53 includes a bearing seat and a bearing. The air register 52 is fixed to the air chamber housing 51 via the bearing seat, which seals the position where the air register 52 exits the air chamber housing 51.

[0072] The air regulator 52 is provided to adjust the amount of air entering the air chamber to ensure the ratio of waste liquid to air. The structure of the air regulator 52 is shown in Figure 2 and includes: an air regulating movable baffle 521, a lower baffle 522, a rotating shaft 523, an upper baffle 524, and a driver 525.

[0073] The inlet end of the air chamber housing 51 is a rectangular structure; the upper baffle 524 and the lower baffle 522 are arc plates, which are respectively fixed to the left and right inner side walls of the inlet end of the air chamber housing 51, and are staggered up and down; the air adjustment movable baffle 521 is a square structure, smaller than the air chamber housing 51, and is not connected to the air chamber housing 51. The air adjustment movable baffle 521 is arranged between the upper baffle 524 and the lower baffle 522 and is connected to the rotating shaft 523; the air adjustment movable baffle 521 is connected as a whole to the rotating shaft 523, and the rotating shaft 523 is a circular structure, extending out of the side panel of the air chamber housing 51, and is supported by the support seat II 53 fixed on the front and rear side panels of the air chamber housing 51, and can be driven by the driver 525 to rotate.

[0074] The driver 525 drives the rotating shaft 523 to rotate, driving the air regulating movable baffle 521 to rotate together. The gap between the air regulating movable baffle 521 and the upper baffle 524 and the lower baffle 522 can change, thereby adjusting the amount of air entering the air chamber 5.

[0075] When the wind regulating movable baffle 521 is in a horizontal state, it cooperates with the upper baffle 524 and the lower baffle 522 to play a sealing effect on the inlet of the air chamber housing 51, and plays a role of positioning simultaneously. At this moment, the inlet of the air chamber housing 51 is encapsulated, and air cannot enter.

[0076] As the rotating shaft 523 rotates, the air regulating movable baffle 521 gradually has an inclination angle, and air can enter the air chamber shell 51. When the air regulating movable baffle 521 is in a vertical state, the amount of air entering is the largest.

[0077] The support seat II 53 is used to support the rotating shaft 523 on the one hand, and to seal the shaft hole opened on the side plate of the air chamber shell 51 on the other hand to prevent air leakage.

[0078] 3. Waste liquid room 4

[0079] The waste liquid chamber 4 includes a waste liquid inlet 41; a blocking plate I 42; a waste liquid chamber shell 43; a support frame 44; and a blocking plate II 45.

[0080] The waste liquid chamber housing 43 is a hollow housing that can be square or circular. Blocking plates I 42 and II 45 are provided at both ends of the waste liquid chamber housing 43. Blocking plate I 42 has a through hole that allows the cleaning rod of the cleaner 3 to pass through; blocking plate II 45 has a waste liquid outlet 451.

[0081] A waste liquid inlet 41 is provided on the waste liquid chamber housing 43 near the end thereof for injecting waste liquid;

[0082] One or multiple support frames 44 are arranged in parallel inside the waste liquid chamber housing 43 .

[0083] The structure of the support frame 44 is as follows Figure 3 As shown, it includes a shaft sleeve and a plurality of wing plates evenly arranged on the outside of the shaft sleeve. The shaft hole inside the shaft sleeve can pass through the slag remover rod of the slag remover 3; the wing plates are connected to the inner wall of the waste liquid chamber 4.

[0084] 4. Deslagging device 3

[0085] The slag remover 3 includes: a motor 31; a slag remover rod 32; and a support base 1 33. The slag remover rod 32 has an opening for a medium interface 321.

[0086] One end of the slag removal rod 32 is inside the waste liquid chamber 4, and passes through the axial hole of the support frame 44 and is supported by the support frame 44; the other end is outside the waste liquid chamber 4, supported by the support seat I 33 connected to the blocking plate I 42, and the end is connected to the motor 31.

[0087] The operation of the motor 31 can drive the slag removal rod 32 to rotate and move toward the blocking plate II 45 at the same time; under the action of the support frame 44, it can ensure that the end of the slag removal rod 32 is smoothly inserted into the waste liquid outlet of the blocking plate II 45.

[0088] The support base 1 33 includes a bearing and a bearing seat. The slag remover rod 32 is connected to the blocking plate 1 42 through the bearing and the bearing seat, which can ensure that the slag remover rod 32 rotates more flexibly and has a better seal.

[0089] The structure of the slag removal rod 32 is as follows: Figure 4 As shown, the end of one end of the slag removal rod 32 is in a constricted structure, which cooperates with the waste liquid outlet on the blocking plate II 45 to ensure that it can smoothly penetrate the waste liquid outlet of the blocking plate II 45.

[0090] The slag removal rod 32 is axially opened with a blind hole as a medium channel 322 , the open end of the medium channel 322 leads to the mixing chamber 6 ; the medium channel 322 is connected to the medium interface 321 for injecting compressed air, steam or other media.

[0091] The deslagging device 3 allows for the cleaning of the waste liquid outlet and removal of slag without shutting down the machine. After the motor 31 is activated, it drives the deslagging rod 32 in a linear motion, entering the waste liquid outlet on the blocking plate II 45 to remove slag at the waste liquid outlet. Simultaneously, it drives the deslagging rod 32 in a rotational motion, removing slag from the waste liquid outlet hole walls. After deslagging is complete, compressed air or steam is introduced through the medium interface 321 to effectively remove slag from the waste liquid outlet hole and the inner walls of the mixing chamber 6, while the deslagging rod 32 returns to its initial position.

[0092] The structure of the blocking plate II 45 is as follows Figure 5 As shown, the blocking plate II 45 is provided with a waste liquid outlet 451 .

[0093] The waste liquid outlet is a one-side expansion structure. The large diameter of the expansion structure faces the interior of the waste liquid chamber 4; the small diameter faces the mixing chamber 6. This structure of the waste liquid outlet will produce the following technical effects:

[0094] (1) The large diameter of the expanded structure faces the interior of the waste liquid chamber 4, which can ensure that the slag removal rod 32 smoothly enters the waste liquid outlet;

[0095] (2) The large diameter of the expanded structure faces the interior of the waste liquid chamber 4, and the small diameter faces the mixing chamber 6. In this way, the outlet area of the waste liquid injection will change, which can achieve better waste liquid atomization effect and make it easier to remove slag.

[0096] There may be multiple waste liquid outlets on the blocking plate II45, and multiple slag removal components may be fixed to the ends of the corresponding slag removal rods 32.

[0097] Figure 6 A structural diagram of four slag removal components and a slag removal rod is provided. In this case, each slag removal component includes a frame and a slag removal head. The frame is fixed to the slag removal rod, and the slag removal head is fixed to the frame. The end of each slag removal head is a constricted structure that can be used in conjunction with the flared structure of the waste liquid outlet of the plugging plate II45 to ensure that each slag removal head can smoothly enter the waste liquid outlet of the plugging plate II45.

[0098] 5. Filter 1, Adsorber 2

[0099] One end of the adsorber 2 is connected to the inlet of the waste liquid chamber 4; the other end is connected to the filter 2; the filter 1 and the adsorber 2, and the adsorber 2 and the inlet of the waste liquid chamber 4 are detachably connected.

[0100] The filter 1 is equipped with filter material, wire mesh and the like.

[0101] Adsorbent material, such as activated carbon and glass fiber, is contained inside the adsorber 2.

[0102] A filter and an adsorber are provided at the waste liquid inlet of the waste liquid chamber 4, which can filter and adsorb the waste liquid, remove some floccules, heavy metals and solid particles in the waste liquid, and reduce blockage of the waste liquid outlet of the spray gun.

[0103] Different filter and adsorption materials can be replaced according to the harmful substance composition in the waste liquid.

[0104] The filter and adsorption materials can be replaced regularly.

[0105] The filter 1 and the adsorber 2, and the adsorber 2 and the waste liquid inlet of the waste liquid chamber 4 are detachably connected by means of bolts or the like, so as to facilitate replacement and maintenance.

[0106] Workflow:

[0107] (1) Air enters the air chamber, and the amount of air entering the air chamber can be adjusted by rotating the air regulator motor; the air chamber is volute-shaped, and the air entering it will rotate. The rotating air enters the mixing chamber through the air outlet;

[0108] (2) The waste liquid enters the filter 1 and adsorber 2, where some floccules, heavy metals, and solid particles are removed from the waste liquid. The waste liquid is then ejected through the waste liquid outlet on the plugging plate II and enters the mixing chamber.

[0109] (3) The waste liquid entering the mixing chamber is mixed with air. The air is rotating and the waste liquid is sprayed out in an umbrella shape, which strengthens the mixing of air and waste liquid. The mixed gas of air and waste liquid enters the furnace for treatment.

[0110] (4) The linear and rotary dual motion motor is started regularly to drive the slag removal rod to penetrate into the waste liquid outlet on the plugging plate II, and remove the slag on the waste liquid nozzle through the rotary motion.

[0111] (5) After the mechanical slag removal is completed, compressed air or steam is introduced into the medium interface connected to the slag removal rod, and the energy of compressed air or steam is used to remove the slag from the waste liquid nozzle again. Since the compressed air and steam have a large effective area, they can also clean the slag on the inner wall of the adjacent mixing chamber.

[0112] The injection device of the present invention first filters and adsorbs the waste liquid to remove most of the flocs, heavy metals and solid particles in the waste liquid, minimizes the impurities in the waste liquid, and prevents the particles in the waste liquid from precipitating in the injection device and clogging the nozzle; a slag remover is provided to mechanically remove the precipitate at the waste liquid outlet; at the same time, compressed air or steam is used to remove the slag on the waste liquid outlet and the inner wall of the mixing chamber, and the injection device can be cleaned regularly without stopping the machine.

[0113] Example 2

[0114] Compared with the first embodiment, the second embodiment does not include the air chamber 5. In this case, only the medium such as compressed air or steam is injected into the mixing chamber 6 through the slag removal rod.

[0115] Although the principles of the present invention have been described in detail above in conjunction with the preferred embodiments of the present invention, those skilled in the art should understand that the above embodiments are merely illustrative of the implementation of the present invention and are not intended to limit the scope of the present invention. The details in the embodiments do not constitute a limitation on the scope of the present invention. Without departing from the spirit and scope of the present invention, any obvious changes such as equivalent transformations and simple substitutions based on the technical solutions of the present invention fall within the scope of protection of the present invention.

Claims

1. A waste liquid treatment spray device with a self-cleaning function, characterized in that: The waste liquid treatment injection device with a self-cleaning function comprises: a slag remover (3), a waste liquid chamber (4) and a mixing chamber (6); A waste liquid outlet (451) is provided at the end of the waste liquid chamber (4) leading to the mixing chamber (6), and a waste liquid inlet is provided at the other end for introducing waste liquid; The slag remover (3) comprises: a motor (31), a slag remover rod (32) and a support base I (33); The support seat I (33) is fixed on the outside of the waste liquid chamber (4); the slag removal rod (32) is supported by the support seat I (33), one end of which is inside the waste liquid chamber (4) and the end of which can penetrate the waste liquid outlet (451), and the other end of which is connected to the motor (31) outside the waste liquid chamber (4); the slag removal rod (32) is axially provided with a blind hole as a medium channel, and the open end of the medium channel leads to the mixing chamber (6); the medium channel is connected to the medium interface for injecting gas medium; The operation of the motor (31) can drive the slag removal rod (32) to rotate and move linearly toward the waste liquid outlet (451).

2. A waste liquid treatment spraying device with a self-cleaning function according to claim 1, characterized in that: The waste liquid treatment injection device with a self-cleaning function further comprises an air chamber (5) for introducing air into the mixing chamber (6).

3. The waste liquid treatment spraying device with self-cleaning function according to claim 2, characterized in that: The air chamber (5) comprises: an air chamber shell (51); an air register (52); a support base II (53); The air inlet of the air chamber (5) is equipped with an air regulator (52); the air regulator (52) is installed on the air chamber housing (51) via a support seat II (53).

4. The waste liquid treatment spraying device with self-cleaning function according to claim 3, characterized in that: The air regulator (52) comprises: an air regulating movable baffle (521), a lower baffle (522), a rotating shaft (523), an upper baffle (524), and a driver (525); The upper baffle (524) and the lower baffle (522) are fixed alternately on the left and right inner walls of the air chamber shell (51); the air regulating movable baffle (521) is arranged between the upper baffle (524) and the lower baffle (522); The air regulating movable baffle (521) is connected to the rotating shaft (523), and the rotating shaft (523) is supported by a support seat II (53) fixed on the front and rear side plates of the air chamber housing (51), and can be driven by a driver (525) to perform rotational motion; The driver (525) drives the rotating shaft (523) to rotate, which can drive the air-adjusting movable baffle (521) to rotate together, and accordingly, the gap between the air-adjusting movable baffle (521) and the upper baffle (524) and the lower baffle (522) can change.

5. The waste liquid treatment spraying device with self-cleaning function according to claim 1, characterized in that: A support frame (44) for supporting the slag removal rod (32) is provided inside the waste liquid chamber (4); The support frame (44) comprises a shaft sleeve and a plurality of wing plates evenly arranged on the outside of the shaft sleeve; the shaft hole inside the shaft sleeve can pass through the slag removal rod (32); and the wing plates are connected to the inner wall of the waste liquid chamber (4).

6. The waste liquid treatment spraying device with self-cleaning function according to claim 1, characterized in that: The waste liquid chamber (4) includes a blocking plate I (42); a waste liquid chamber housing (43) and a blocking plate II (45); The waste liquid chamber shell (43) is a hollow shell with a blocking plate I (42) and a blocking plate II (45) provided at both ends. The blocking plate I (42) is provided with a through hole through which the slag removal rod of the slag remover (3) can pass; the blocking plate II (45) is provided with a waste liquid outlet (451); and the waste liquid chamber shell (43) is provided with a waste liquid inlet.

7. The waste liquid treatment spraying device with self-cleaning function according to claim 6, characterized in that: The waste liquid outlet on the blocking plate II (45) is in an expanded structure; the large diameter of the expanded structure faces the interior of the waste liquid chamber (4), and the small diameter faces the mixing chamber (6); The slag removal rod (32) has an end portion with a constricted structure, and the constricted structure cooperates with the expanded structure of the waste liquid outlet.

8. The waste liquid treatment spraying device with self-cleaning function according to claim 1, characterized in that: The waste liquid outlet (451) is provided in plurality; a plurality of slag removal components are fixed to the ends of the corresponding slag removal rods (32); The slag removal component comprises a frame and a slag removal head, the frame is fixed on the slag removal rod (32), the slag removal head is fixed on the frame, and the end of each slag removal head has a shrinking structure used in conjunction with the expanding structure of the waste liquid outlet.

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