A mixing device for sewage treatment with chemical addition

Abstract

The present invention relates to the field of mixing devices, in particular to a mixing device for sewage dosing treatment, comprising a medicine barrel and a self-priming pump at the top of the medicine barrel, and also comprising a reflux mechanism arranged in the medicine barrel, the reflux mechanism comprising a steel pipe, the side wall of the steel pipe is provided with a slot along its length direction, and the steel pipe is sleeved with an open linear bearing, the outer sleeve of the open linear bearing is sleeved with a collar, the outer wall of the collar is sleeved with a float, and the collar is matched with a straight wall at the opening of the open linear bearing, and a roller is rotatably connected to the inner side of the straight wall. The device continuously circulates liquid medicine between the liquid inlet pipe, the self-priming pump, the transfer pipe and the steel pipe for mixing, and the outlet of the reflux liquid medicine can be automatically maintained at the liquid level in the medicine barrel according to the liquid level height, thereby maintaining the working efficiency of the circulation mixing and suppressing the foaming phenomenon.

Description

Technical Field

[0001] The invention relates to the field of mixing devices, in particular to a mixing device for sewage dosing treatment. Background Art

[0002] The existing small-scale dosing equipment is mainly composed of a medicine barrel and an electric pump. Generally, for cost considerations, the electric pump of the small-scale dosing equipment is only responsible for pumping out the medicine liquid, but not for mixing the medicine liquid. Manual stirring or stirring with the help of other electric tools is often required. Obviously, there is functional duplication between the electric pump of this type of dosing equipment and the use of other electric stirring tools, that is, both have the ability to drive liquid. Therefore, the functionality of the electric pump has not been fully developed and utilized, which reduces the convenience of equipment use and increases the hidden use cost of users. The present invention proposes a mixing device for sewage dosing treatment that uses a single medicine barrel and a single electric pump, but has the two functions of pumping medicine and mixing medicine liquid. Summary of the invention

[0003] In view of the problem that the small-sized dosing equipment with a single pump in the above-mentioned or prior art does not have the function of actively mixing the liquid medicine, the present invention is proposed.

[0004] Therefore, the object of the present invention is to provide a mixing device for sewage dosing treatment.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a mixing device for sewage dosing treatment, comprising a medicine barrel and a self-priming pump at the top of the medicine barrel, and also comprising a reflux mechanism arranged in the medicine barrel, the reflux mechanism comprising a steel pipe, the side wall of the steel pipe is provided with a slot along its length direction, and the steel pipe is sleeved with an open linear bearing, the outer surface of the open linear bearing is sleeved with a collar, the outer wall of the collar is sleeved with a float, and the collar is located at the opening of the open linear bearing and is matched with a straight wall, the inner side of the straight wall is rotatably connected with a roller; the inner side of the steel pipe is sleeved with a A spring sheet, and the spring sheet is in a roll shape, and the spring sheet is provided with a first arc segment, arc concave is provided on both sides of the arc segment, and the side of the arc concave away from the first arc segment is connected with a second arc segment, the side of the second arc segment away from the arc concave is connected with a Z-shaped segment, a side of the Z-shaped segment away from the second arc segment is provided with a side strip, and a first sealing strip is extruded between the second arc segment and the inner wall of the steel pipe, and a second sealing strip is extruded between the side strips, and annular grooves are opened at both ends of the roller, and the annular grooves are extruded and sleeved with the folded edges of the Z-shaped segment.

[0006] As a preferred solution of the mixing device for sewage treatment with chemicals of the present invention, the reed and the steel pipe are pre-pressed and assembled, and the outer wall of the first circular arc segment fits the inner wall of the steel pipe.

[0007] As a preferred solution of the mixing device for sewage dosing treatment of the present invention, the liquid inlet of the self-priming pump is connected with a liquid inlet pipe, the liquid inlet pipe extends to the bottom of the medicine barrel, and the bottom end of the liquid inlet pipe is arranged away from the steel pipe.

[0008] As a preferred solution of the mixing device for sewage dosing treatment of the present invention, the liquid outlet of the self-priming pump is connected to a three-way valve, the three-way valve is also connected to a transfer tube, the dosing port of the medicine barrel is connected to a screw cap, the transfer tube passes through the sealing cover and extends into the medicine barrel, and the end of the transfer tube is sleeved with the top of the steel pipe.

[0009] As a preferred solution of the mixing device for sewage dosing treatment of the present invention, an air gap is left between the transfer tube and the rotary cover.

[0010] As a preferred solution of the mixing device for sewage dosing treatment of the present invention, wherein: the top and bottom ends of the steel pipe are both provided with sealing plugs, and the sealing plug located at the top end of the steel pipe is opened with a through hole, and the sealing plug located at the top end of the steel pipe is squeezed between the transfer tube and the steel pipe, and the bottom end of the steel pipe is provided with an end cover, and the sealing plug located at the bottom end of the steel pipe is squeezed between the end cover and the steel pipe, and the two sealing plugs squeeze the spring.

[0011] As a preferred solution of the mixing device for sewage dosing treatment of the present invention, a thin-walled bearing is sleeved in the middle of the roller peripheral wall, and a bracket is sleeved on the thin-walled bearing, a first slide groove is opened on the inner side of the straight wall parallel to the axial direction of the steel pipe, and the bracket is slidably connected to the slide groove, and a second slide groove is opened on the outer side of the straight wall.

[0012] As a preferred solution of the mixing device for sewage dosing treatment of the present invention, the width of the second slide groove is smaller than that of the first slide groove, the second slide groove passes through the straight wall and is connected to the first slide groove, and the bracket is locked between the second slide groove and the straight wall by screws.

[0013] As a preferred solution of the mixing device for sewage treatment with chemical addition of the present invention, wherein: the straight wall is located on both sides of the second chute and has hollow grooves symmetrically opened thereon.

[0014] As a preferred solution of the mixing device for sewage dosing treatment of the present invention, wherein: the top end of the float is fixedly connected with a baffle, and the baffle is fan-shaped and non-contactly matched with the opening of the open linear bearing.

[0015] The beneficial effects of the mixing device for sewage dosing treatment of the present invention are as follows: the device continuously circulates the liquid medicine between the liquid inlet pipe, the self-priming pump, the transfer pipe and the steel pipe for mixing, and the outlet of the reflux liquid medicine can be automatically maintained at the liquid level in the medicine barrel according to the liquid level height, thereby maintaining the working efficiency of the circulation mixing and suppressing the foaming phenomenon. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is a schematic diagram of the overall structure of a mixing device used for sewage dosing treatment.

[0018] Figure 2 Mixing device for sewage treatment Figure 1 Structural cross-section view.

[0019] Figure 3 A schematic diagram of the structure of the reflux mechanism of a mixing device for sewage dosing treatment.

[0020] Figure 4 A cross-sectional view of the structure of a float in a return mechanism of a mixing device for sewage dosing treatment.

[0021] Figure 5 Schematic diagram of the assembly structure of the collar and steel pipe in the return mechanism of the mixing device for sewage dosing treatment.

[0022] Figure 6 Mixing device for sewage treatment Figure 5 Exploded view of the assembly structure.

[0023] Figure 7 This is a schematic diagram of the reed-closed state structure of a mixing device for sewage dosing treatment.

[0024] Figure 8 A schematic diagram of the structure of a mixing device for sewage dosing treatment in which a roller squeezes a reed to open it.

[0025] In the figure: 100, medicine barrel; 101, self-priming pump; 102, three-way valve; 103, transfer tube; 104, liquid inlet pipe; 105, screw cap; 200, reflux mechanism; 201, steel pipe; 202, open linear bearing; 203, collar; 204, float; 205, roller; 206, thin-walled bearing; 207, bracket; 208, reed; 209, first sealing strip; 210, second sealing strip; 211, sealing plug; 212, end cover; 201a, notch; 203a, straight wall; 203b, first slide groove; 203c, second slide groove; 203d, hollow groove; 204a, baffle; 208a, first arc segment; 208b, arc concave; 208c, second arc segment; 208d, Z-shaped segment; 208e, side strip. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0027] Example 1, reference Figure 1 to Figure 8 , which is the first embodiment of the present invention, and provides a mixing device for sewage dosing treatment, which can achieve the effect of using a single medicine barrel 100 and a single self-priming pump 101 to have the two functions of pumping medicine and circulating and mixing medicine liquid, and includes a reflux mechanism 200 arranged in the medicine barrel 100, and the reflux mechanism 200 includes a steel pipe 201, and the side wall of the steel pipe 201 is provided with a slot 201a along its length direction, and the steel pipe 201 is sleeved with an open linear bearing 202, and the outer outer surface of the open linear bearing 202 is connected with a collar 203, and the outer wall of the collar 203 is sleeved with a float 204, and the collar 203 is located at the opening of the open linear bearing 202 and is matched with a straight wall 203a, and the inner side of the straight wall 203a is rotatably connected with a roller 205; the inner sleeve of the steel pipe 201 is sleeved with a roller 205, and the inner sleeve of the roller 205 is rotatably connected with a roller 205. A spring sheet 208 is connected, and the spring sheet 208 is in a roll shape, and the spring sheet 208 is provided with a first arc segment 208a, and arc recesses 208b are provided on both sides of the arc segment, and the side of the arc recess 208b away from the first arc segment 208a is connected to the second arc segment 208c, the side of the second arc segment 208c away from the arc recess 208b is connected to the Z-shaped segment 208d, and the side of the Z-shaped segment 208d away from the second arc segment 208c is provided with a side strip 208e, and a first sealing strip 209 is extruded between the second arc segment 208c and the inner wall of the steel pipe 201, and a second sealing strip 210 is extruded between the side strips 208e, and annular grooves are opened at both ends of the roller 205, and the annular grooves are extruded and sleeved with the folded edges of the Z-shaped segment 208d.

[0028] Specifically, the reed 208 and the steel pipe 201 are pre-pressed and assembled, and the outer wall of the first arc segment 208a is in contact with the inner wall of the steel pipe 201. The liquid inlet of the self-priming pump 101 is connected to the liquid inlet pipe 104, and the liquid inlet pipe 104 extends to the bottom of the medicine barrel 100. The bottom end of the liquid inlet pipe 104 is arranged away from the steel pipe 201. The liquid outlet of the self-priming pump 101 is connected to the three-way valve 102, and the three-way valve 102 is also connected to the transfer pipe 103. The drug adding port of the medicine barrel 100 is connected to the screw cap 105, and the transfer pipe 103 passes through the sealing cover and extends into the medicine barrel 100, and the end of the transfer pipe 103 is connected to the steel pipe 2 01 top sleeve, an air gap is left between the transfer tube 103 and the screw cap 105, the medicine barrel 100 and the self-priming pump 101 at the top of the medicine barrel 100, also include sealing plugs 211 are provided at the top and bottom ends of the steel pipe 201, and the sealing plug 211 located at the top of the steel pipe 201 is opened with a through hole, and the sealing plug 211 located at the top of the steel pipe 201 is squeezed between the transfer tube 103 and the steel pipe 201, an end cover 212 is provided at the bottom end of the steel pipe 201, the sealing plug 211 located at the bottom end of the steel pipe 201 is squeezed between the end cover 212 and the steel pipe 201, and the two sealing plugs 211 squeeze the reed 208.

[0029] The working principle and advantages of the device are further explained in combination with the prior art: the medicine liquid at the bottom of the barrel is extracted by an electric pump and then pumped back directly from the top of the barrel to form a medicine liquid circulation, which can quickly achieve medicine liquid mixing. However, the following problems are found in actual use. First, the medicine barrel 100 is not filled every time. When the liquid level in the medicine barrel 100 is low, the pumped back medicine liquid will impact the liquid surface and bring in a large amount of air to form foam. In addition to being easy to overflow and cause waste and pollution, a large amount of foam will also cause serious interference to the normal use of the electric pump. Second, if the medicine liquid reflux port is set lower, more of the refluxed medicine liquid will be sucked into the liquid extraction port again during the circulation mixing process, resulting in reduced mixing efficiency.

[0030] The main mixing method of the present invention is to adjust the three-way valve 102 to connect the liquid outlet of the self-priming pump 101 and the transfer pipe 103. After starting the self-priming pump 101, the medicine liquid can be continuously circulated between the liquid inlet pipe 104, the self-priming pump 101, the transfer pipe 103 and the steel pipe 201, and the medicine liquid is extracted from the bottom of the medicine barrel 100 and then refluxed from below the liquid surface in the medicine barrel 100, and the gate of the liquid inlet pipe 104 is facing away from the steel pipe 201 to maximize the mixing efficiency.

[0031] The main technical problem involved is to maintain the condition of "completing reflux from below the liquid surface in the medicine barrel 100" when the liquid level in the medicine barrel 100 is different. Therefore, the present invention mainly provides a reflux mechanism 200, whose main body is a steel pipe 201 with an axial notch 201a cut out, and the two ends of the steel pipe 201 and the notch 201a are sealed by sealing members such as a reed 208, a first sealing strip 209, and a second sealing strip 210. The seals at both ends of the steel pipe 201 are relatively fixed, but the seal of the notch 201a changes dynamically according to the liquid level height. The special shape of the reed 208 cooperates with the roller 205, so that the sealing of the notch 201a on the steel pipe 201 can be maintained in the part separated from the roller 205, and the notch is squeezed open in the part where the roller 205 passes to form a reflux path, thereby achieving the effect that the water outlet position of the steel pipe 201 moves with the roller 205.

[0032] refer to Figure 7 The initial state of the reed 208 in the steel tube 201 is as follows: Figure 7 As shown, the second arc segment 208c of the reed 208 and the inner walls on both sides of the notch 201a squeeze the first sealing strip 209 to prevent the liquid from overflowing from the outer wall of the reed 208 and the inner wall of the steel pipe 201, and the arc concave 208b changes the original squeezing angle of the first arc segment 208a on the first sealing strip 209 (from parallel to each other to nearly vertical), so that a higher squeezing force can be provided to the first sealing strip 209, and the side strips 208e on both sides of the opening of the reed 208 squeeze the second sealing strip 209. The strip 210 cooperates with the first sealing strip 209 to seal the notch 201a. The special feature is that a Z-shaped segment 208d is designed between the side strip 208e and the second arc segment 208c. The two Z-shaped segments 208d are located on one side of the side strip 208e and are spliced ​​to form an obtuse angle. When the internal liquid pressure of the reed 208 increases, the Z-shaped segment 208d provides a higher extrusion force between the side strips 208e by squeezing the obtuse angle, thereby enhancing the overall sealing of the reed 208 during operation.

[0033] refer to Figure 8 , the folded edge of the Z-shaped segment 208d of the reed 208 at the roller 205 position is squeezed by the roller 205 and sinks into the annular groove of the roller 205, thereby causing the Z-shaped segment 208d to undergo elastic deformation, causing the two side strips 208e to move away from each other, thereby opening a gap in the roller 205 area, allowing the refluxed liquid to flow back into the medicine barrel 100 from the gap. Due to the better elastic properties of the reed 208, as the distance between the upper part of the reed 208 and the roller 205 increases, the reed 208 will be elastically deformed and will return to a sealed state again. Therefore, the gap will only appear at the roller 205. Of course, the strength of the dynamic seal is limited, and the operating power of the self-priming pump 101 should be adjusted to be used within an appropriate range;

[0034] refer to Figure 2 The buoyancy of the float 204 is designed to be sufficient to overcome the resistance and float on the surface of the medicine liquid, so that the roller 205 follows the float 204 to be at the liquid level, and then the opening position of the reed 208 follows the roller 205 to be opened at the liquid surface, thereby achieving the purpose of drawing liquid from the bottom of the medicine barrel 100 and returning the liquid from the liquid surface in the medicine barrel 100. The wide bottom surface of the float 204 has a suppressive effect on the fluctuation of the liquid surface, which can reduce the foaming caused by the reflux.

[0035] In summary, the device continuously circulates the liquid medicine for mixing between the liquid inlet pipe 104, the self-priming pump 101, the transfer pipe 103 and the steel pipe 201, and the outlet of the reflux liquid medicine can be automatically maintained at the liquid level in the medicine barrel 100 according to the liquid level height, thereby maintaining the working efficiency of the circulation mixing and suppressing the foaming phenomenon.

[0036] Example 2, reference Figure 6~Figure 8 , which is the second embodiment of the present invention. Different from the previous embodiment, this embodiment provides a collar 203 and a bracket 207 of a mixing device for sewage dosing treatment, which includes: a thin-walled bearing 206 is sleeved on the middle part of the peripheral wall of the roller 205, and the thin-walled bearing 206 is sleeved on the bracket 207, a first slide groove 203b is axially opened on the inner side of the straight wall 203a parallel to the steel pipe 201, and the bracket 207 is slidably connected to the slide groove, a second slide groove 203c is opened on the outer side of the straight wall 203a, the groove width of the second slide groove 203c is smaller than the first slide groove 203b, the second slide groove 203c passes through the straight wall 203a and is connected with the first slide groove 203b, and the bracket 207 is locked with the straight wall 203a through the second slide groove 203c and the straight wall 203a by screws, and the straight wall 203a is symmetrically provided with hollow grooves 203d on both sides of the second slide groove 203c.

[0037] The opening curvature of the open linear bearing 202 matches the slot 201a. The linear bearing can greatly reduce the resistance of the float 204 to the up and down floating along the steel pipe 201, thereby improving the reliability of the device. In addition, the position can be adjusted along the first slide groove 203b of the ring 203 by the bracket 207, and the position can be adjusted along the second slide groove 203c of the ring 203 by the screw following the bracket 207, thereby realizing the function of fine-tuning the position of the roller 205 along the axial direction of the steel pipe 201, thereby achieving the fine-tuning of the opening position of the reed 208 relative to the float 204.

[0038] The rest of the structure is the same as that of Example 1.

[0039] In summary, in addition to providing functions such as switching and supporting, the collar 203 and the bracket 207 can also fine-tune the position of the roller 205 along the axial direction of the steel pipe 201 to achieve the function of fine-tuning the opening position of the reed 208 relative to the float 204.

[0040] Example 3, reference Figure 3, which is the third embodiment of the present invention. Different from the previous embodiment, this embodiment provides a sealing plug 211 of a mixing device for sewage dosing treatment, which solves the problem of overflow at both ends of the reed 208. It includes: the top of the float 204 is fixedly connected with a baffle 204a, and the baffle 204a is fan-shaped and non-contactly matched with the opening of the open linear bearing 202.

[0041] Since the gap opened by the roller 205 squeezing the reed 208 is symmetrical in the vertical direction, the refluxed liquid medicine can either directly flow downward below the liquid surface or spray upward above the liquid surface. Obviously, the latter is likely to cause foaming. Therefore, the float 204 is further provided with a baffle 204a so that the liquid medicine refluxed from the gap flows as far downward as possible, and cooperates with the float 204 to further reduce the foaming of the liquid medicine.

[0042] The rest of the structure is the same as that of Example 2.

[0043] In summary, the device can effectively suppress the foaming phenomenon during the mixing process of the drug solution.

[0044] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A mixing device for sewage treatment by adding chemicals, comprising a medicine barrel (100) and a self-priming pump (101) at the top of the medicine barrel (100), characterized in that: It also includes a reflux mechanism (200) disposed in the medicine barrel (100), the reflux mechanism (200) comprising a steel pipe (201), the side wall of the steel pipe (201) being provided with a slot (201a) along its length direction, the steel pipe (201) being sleeved with an open linear bearing (202), the outer surface of the open linear bearing (202) being sleeved with a collar (203), the outer wall of the collar (203) being sleeved with a float (204), and the collar (203) being provided with a matching straight wall (203a) at the opening of the open linear bearing (202), the inner side of the straight wall (203a) being rotatably connected with a roller (205); A reed (208) is sleeved inside the steel pipe (201), and the reed (208) is in a reel shape, and the reed (208) is provided with a first arc segment (208a), and arc recesses (208b) are provided on both sides of the arc segment, and a second arc segment (208c) is connected to the side of the arc recess (208b) away from the first arc segment (208a), and a Z-shaped a second arc segment (208d), a side strip (208e) being arranged on the Z-shaped segment (208d) away from the second arc segment (208c), a first sealing strip (209) being extruded between the second arc segment (208c) and the inner wall of the steel pipe (201), a second sealing strip (210) being extruded between the side strips (208e), annular grooves being provided at both ends of the roller (205), and the annular grooves being extruded and sleeved with the folded edge of the Z-shaped segment (208d); The liquid inlet of the self-priming pump (101) is connected to a liquid inlet pipe (104), the liquid inlet pipe (104) extends to the bottom of the medicine barrel (100), the bottom end of the liquid inlet pipe (104) is arranged in a direction away from the steel pipe (201), the liquid outlet of the self-priming pump (101) is connected to a three-way valve (102), the three-way valve (102) is also connected to a transfer pipe (103), the drug adding port of the medicine barrel (100) is connected to a screw cap (105), the transfer pipe (103) penetrates the sealing cover and extends into the medicine barrel (100), and the end of the transfer pipe (103) is sleeved with the top of the steel pipe (201); The top and bottom ends of the steel pipe (201) are both provided with sealing plugs (211), and the sealing plug (211) located at the top end of the steel pipe (201) is provided with a through hole, and the sealing plug (211) located at the top end of the steel pipe (201) is squeezed between the transfer pipe (103) and the steel pipe (201), and the bottom end of the steel pipe (201) is provided with an end cover (212), and the sealing plug (211) located at the bottom end of the steel pipe (201) is squeezed between the end cover (212) and the steel pipe (201), and the two sealing plugs (211) squeeze the spring leaf (208), and the middle part of the peripheral wall of the roller (205) is sleeved with a thin-walled bearing (206), and the thin-walled bearing (206) is sleeved with a bracket (207), and the inner side of the straight wall (203a) is parallel to the axial direction of the steel pipe (201) and is provided with a through hole (211). A first slide groove (203b) is provided, and the bracket (207) is slidably connected to the slide groove. A second slide groove (203c) is provided on the outer side of the straight wall (203a). The groove width of the second slide groove (203c) is smaller than that of the first slide groove (203b). The second slide groove (203c) passes through the straight wall (203a) and is connected to the first slide groove (203b). The bracket (207) is locked with the straight wall (203a) through the second slide groove (203c). Hollow grooves (203d) are symmetrically provided on both sides of the straight wall (203a) located at the second slide groove (203c). A baffle plate (204a) is fixedly connected to the top end of the float (204). The baffle plate (204a) is fan-shaped and non-contactly matches and sleeves with the opening of the open linear bearing (202).

2. The mixing device for sewage treatment according to claim 1, characterized in that: The leaf spring (208) and the steel pipe (201) are pre-pressed together, and the outer wall of the first circular arc segment (208a) fits against the inner wall of the steel pipe (201).

3. The mixing device for sewage treatment according to claim 2, characterized in that: An air gap is left between the transfer tube (103) and the rotary cover (105).

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