Chemical adding device capable of automatically exhausting and relieving pressure

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a dosing device capable of automatically exhausting and relieving pressure, which comprises a bottom plate and further comprises a medicine box arranged at the top of the bottom plate, a filter plate for filtering blocky medicine is fixed on the inner wall of the medicine box, a filter cover for grinding the blocky medicine is fixed on the filter plate, and the filter cover is fixed on the bottom plate. A driving mechanism is arranged at the top of the medicine box, a driving rod is arranged at the bottom of the driving mechanism, and a scraping plate for scraping blocked medicine is fixed to the outer side of the driving rod; block drugs in the filter cover are pulverized through the pulverizing roller, the problem that the drug blocks cannot be effectively mixed is avoided, gas and air in the metering pump are exhausted to the exhaust pressure reducing valve through the exhaust pipe and the exhaust pressure reducing valve, the exhaust pressure reducing valve is automatically opened or closed according to the change of pressure, and the drug blocks are effectively mixed. And gas and air in the metering pump are discharged to ensure that the metering pump is filled with liquid.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a drug adding device with automatic exhaust and pressure relief. Background Art

[0002] The sewage treatment dosing system is a new concept of chemical water treatment dosing equipment, which has been widely used in the fields of power, municipal and other water treatment at home and abroad. The dosing system prepares the reagents in the mixing tank according to the required concentration, and then puts them into the solution tank after being stirred evenly by the agitator. The metering pump (dosing pump) is used to transport the prepared solution to the dosing point or the designated system.

[0003] During use, the existing dosing device usually uses a diaphragm metering pump. The diaphragm metering pump uses a specially designed and processed flexible diaphragm to replace the piston, and realizes reciprocating motion under the action of the driving mechanism to complete the suction and discharge process. Due to the isolation effect of the diaphragm, the isolation between the measured fluid and the driving mechanism is truly realized in structure. The particularity of the structure of the metering pump itself makes it very sensitive to air. If it is not exhausted, air will enter the pump body, which is easy to damage the diaphragm and affect the normal operation of the pump body. In addition, when the dosing medicine is prepared, there will be lumps of medicine entering the mixing box. The lumps of medicine cannot be quickly mixed into medicine by stirring alone, which not only affects the subsequent delivery of the liquid medicine, but also easily causes blockage of the delivery pipeline when the lumps of medicine are delivered.

[0004] Therefore, it is necessary to provide a new automatic exhaust and pressure relief dosing device to solve the above technical problems. Utility Model Content

[0005] The utility model aims to provide a drug adding device with automatic exhaust and pressure relief to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a dosing device with automatic exhaust and pressure relief, comprising a bottom plate, and also comprising:

[0007] A medicine box is arranged on the top of the bottom plate, the inner wall of the medicine box is fixed with a filter plate for filtering the bulk medicine, the filter plate is fixed with a filter cover for crushing the bulk medicine, a driving mechanism is arranged on the top of the medicine box, a driving rod is arranged at the bottom of the driving mechanism, a scraper for scraping the bulk medicine is fixed on the outside of the driving rod, a connecting rod is arranged on one side of the driving mechanism, and a plurality of groups of crushing rollers are fixedly connected to the outside of the connecting rod;

[0008] A support frame is fixed on the top of the base plate, a metering pump is installed on the top of the support frame, a liquid inlet pipe and a liquid outlet pipe are respectively arranged at both ends of the metering pump, an exhaust pipe is arranged on the outside of the liquid outlet pipe, and an exhaust pressure reducing valve is arranged at one end of the exhaust pipe.

[0009] Preferably, the driving mechanism comprises a motor installed on the top of the medicine box, a driving wheel is fixedly connected to the outer side of the driving rod, and the driving wheel is connected to the driven wheel through a belt drive.

[0010] Preferably, the top of the filter plate is fixedly connected to a limiting block, the outer side of the drive rod is fixedly connected to multiple groups of fixed blocks, and the outer side of the fixed block is fixedly connected to multiple groups of stirring rods.

[0011] Preferably, a first bevel gear is fixed to the outer side of the driving rod, a second bevel gear is meshingly connected to the outer side of the first bevel gear, a support plate is fixedly connected to the inner wall of the medicine box, and a rotating rod is fixed at the axis of the second bevel gear.

[0012] Preferably, the inner cavity of the rotating rod is slidably connected to a guide rod, a spring is arranged on the outer side of the guide rod, and a protrusion is fixedly connected to one end of the guide rod.

[0013] Preferably, a flow column is arranged on the top of the liquid inlet pipe, a first ball valve is arranged on the outside of the flow column, and a second ball valve and a filter are respectively arranged on the outside of the liquid inlet pipe.

[0014] Preferably, two groups of mounting plates are fixedly connected to the outer side of the liquid outlet pipe, a third ball valve is arranged on the outer side of the liquid outlet pipe, and a drug adding port is arranged on the top of the liquid outlet pipe.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] The utility model crushes the medicine blocks inside the filter cover by means of a crushing roller, thereby avoiding the problem that the medicine blocks cannot be effectively mixed and the problem that the medicine causes pipeline blockage. The driving rod drives the stirring rod to stir and mix the medicine liquid. By arranging an exhaust pipe and an exhaust pressure reducing valve, the gas and air inside the metering pump are discharged to the exhaust pressure reducing valve. The exhaust pressure reducing valve is automatically opened or closed according to the change of pressure, and the gas and air inside the metering pump are discharged, thereby ensuring that the metering pump is filled with liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A structural schematic diagram of a preferred embodiment of the automatic exhaust and pressure relief dosing device provided by the utility model;

[0018] Figure 2 It is a structural schematic diagram of the driving mechanism in the utility model;

[0019] Figure 3 This is a schematic diagram of the structure inside the Chinese medicine box of the utility model;

[0020] Figure 4 It is a schematic diagram of the structure of the metering pump in the utility model.

[0021] In the figure: 1, bottom plate; 2, medicine box; 3, filter plate; 4, filter cover; 5, driving mechanism; 51, motor; 52, driving wheel; 53, driven wheel; 6, driving rod; 7, scraper; 8, connecting rod; 9, crushing roller; 10, support frame; 11, metering pump; 12, liquid inlet pipe; 13, liquid outlet pipe; 14, exhaust pipe; 15, exhaust pressure reducing valve; 16, limit block; 17, fixed block; 18, stirring rod; 19, first bevel gear; 20, second bevel gear; 21, support plate; 22, rotating rod; 23, guide rod; 24, spring; 25, bump; 26, first ball valve; 27, flow column; 28, second ball valve; 29, filter; 30, mounting plate; 31, third ball valve; 32, dosing port. DETAILED DESCRIPTION

[0022] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0023] See also Figure 1-4 As shown, an automatic exhaust and pressure relief drug adding device comprises a bottom plate 1, a medicine box 2 is arranged on the top of the bottom plate 1, a feed port is arranged on the top of the medicine box 2, a filter plate 3 for filtering block drugs is fixed on the inner wall of the medicine box 2, a filter cover 4 for crushing block drugs is fixed on the filter plate 3, a driving mechanism 5 is arranged on the top of the medicine box 2, a driving rod 6 is arranged on the bottom of the driving mechanism 5, a scraper 7 for scraping off block drugs is fixed on the outer side of the driving rod 6, the driving mechanism 5 can drive the driving rod 6 to rotate, so that the scraper 7 scrapes off the block drugs on the filter plate 3 and pushes the drugs into the filter cover 4, a connecting rod 8 is arranged on one side of the driving mechanism 5, the driving mechanism 5 drives the connecting rod 8 to rotate, a plurality of groups of crushing rollers 9 are fixedly connected to the outer side of the connecting rod 8, and the connecting rod 8 drives the crushing rollers 9 to The support frame 10 is fixed on the top of the bottom plate 1, and a metering pump 11 is installed on the top of the support frame 10. The two ends of the metering pump 11 are respectively provided with a liquid inlet pipe 12 and a liquid outlet pipe 13. One end of the liquid inlet pipe 12 is connected to the outside of the medicine box 2, and an exhaust pipe 14 is provided on the outside of the liquid outlet pipe 13. An exhaust pressure reducing valve 15 is provided at one end of the exhaust pipe 14. By providing the exhaust pipe 14 and the exhaust pressure reducing valve 15, the gas and air inside the metering pump 11 are discharged to the exhaust pressure reducing valve 15. The exhaust pressure reducing valve 15 is automatically opened or closed according to the change of pressure to discharge the gas and air inside the metering pump 11, so as to ensure that the inside of the metering pump 11 is filled with liquid.

[0024] refer to Figure 2As shown, the driving mechanism 5 includes a motor 51 installed on the top of the medicine box 2, the output end of the motor 51 is fixedly connected to the top of the driving rod 6, the outer side of the driving rod 6 is fixedly connected to a driving wheel 52, the driving wheel 52 is connected to a driven wheel 53 through a belt drive, the inner wall of the driven wheel 53 is fixedly connected to the outer side of the connecting rod 8, the top of the filter plate 3 is fixedly connected to a limiting block 16, the scraper 7 is limited by the limiting block 16, the outer side of the driving rod 6 is fixedly connected to multiple groups of fixed blocks 17, the outer side of the fixed block 17 is fixedly connected to multiple groups of stirring rods 18, the stirring rods 18 are used to stir and mix the liquid medicine, and the medicine is poured into the filter plate 3 through the feed port. On the filter plate 3, the filter plate 3 filters small particles of medicine, and the block medicine remains on the filter plate 3. The starting motor 51 drives the driving rod 6 to rotate, so that the scraper 7 scrapes the block medicine on the filter plate 3 and pushes the medicine into the filter cover 4. The driving rod 6 rotates to drive the active wheel 52 and the driven wheel 53 to rotate, and drives the connecting rod 8 to rotate. The connecting rod 8 drives the crushing roller 9 to rotate, so that the crushing roller 9 crushes the block medicine inside the filter cover 4, avoiding the problem that the block medicine cannot be effectively mixed, and avoiding the problem of the medicine causing pipeline blockage. The driving rod 6 drives the stirring rod 18 to stir and mix the medicine solution.

[0025] refer to Figure 3 As shown, a first bevel gear 19 is fixed to the outer side of the driving rod 6, and a second bevel gear 20 is meshedly connected to the outer side of the first bevel gear 19. A support plate 21 is fixedly connected to the inner wall of the medicine box 2, and the inner wall of the support plate 21 is rotatably connected to the outer side of the driving rod 6. A rotating rod 22 is fixed at the axis of the second bevel gear 20, and one end of the rotating rod 22 is rotatably connected to the inner wall of the medicine box 2. A guide rod 23 is slidably connected to the inner cavity of the rotating rod 22, and a spring 24 is provided on the outer side of the guide rod 23. A protrusion 25 is fixedly connected to one end of the guide rod 23. The driving rod 6 drives the first bevel gear 19 and the second bevel gear 20 to rotate, so that the rotating rod 22 rotates, and drives the guide rod 23 to rotate, so that the protrusion 25 contacts the filter cover 4, and knocks the bottom of the filter cover 4, thereby ensuring the filtering effect of the filter cover 4 and avoiding clogging of the filter cover 4.

[0026] refer to Figure 4 As shown, a flow column 27 is provided at the top of the liquid inlet pipe 12, a first ball valve 26 is provided on the outside of the flow column 27, a second ball valve 28 and a filter 29 are provided on the outside of the liquid inlet pipe 12, two sets of mounting plates 30 are fixedly connected to the outside of the liquid outlet pipe 13, one side of the mounting plate 30 is fixedly connected to the support frame 10, a third ball valve 31 is provided on the outside of the liquid outlet pipe 13, and a dosing port 32 is provided on the top of the liquid outlet pipe 13.

[0027] Working principle: When the device is in use, the medicine is poured into the filter plate 3 through the feed port, the filter plate 3 filters the small particles of medicine, and the agglomerated medicine remains on the filter plate 3. The motor 51 is started to drive the driving rod 6 to rotate, so that the scraper 7 scrapes the agglomerated medicine on the filter plate 3 and pushes the medicine into the filter cover 4. The driving rod 6 rotates to drive the driving wheel 52 and the driven wheel 53 to rotate, and drives the connecting rod 8 to rotate. The connecting rod 8 drives the crushing roller 9 to rotate, so that the crushing roller 9 crushes the agglomerated medicine inside the filter cover 4 to prevent the agglomerated medicine from being unable to be removed. The problem of effective mixing is solved, and the problem of pipeline blockage caused by drugs is avoided. The driving rod 6 drives the stirring rod 18 to stir and mix the liquid medicine, and the driving rod 6 drives the first bevel gear 19 and the second bevel gear 20 to rotate, so that the rotating rod 22 rotates, and drives the guide rod 23 to rotate, so that the protrusion 25 contacts the filter cover 4, and knocks the bottom of the filter cover 4 to ensure the filtering effect of the filter cover 4, and avoid the filter cover 4 from being blocked. By setting the exhaust pipe 14 and the exhaust pressure reducing valve 15, the gas and air inside the metering pump 11 are discharged to the exhaust pressure reducing valve 15. The exhaust pressure reducing valve 15 automatically opens or closes according to the change of pressure, discharges the gas and air inside the metering pump 11, and ensures that the metering pump 11 is filled with liquid.

[0028] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A dosing device with automatic exhaust and pressure relief, comprising a bottom plate (1), characterized in that: Also includes: A medicine box (2) is arranged on the top of the bottom plate (1), the inner wall of the medicine box (2) is fixed with a filter plate (3) for filtering the bulk medicine, the filter plate (3) is fixed with a filter cover (4) for crushing the bulk medicine, a driving mechanism (5) is arranged on the top of the medicine box (2), a driving rod (6) is arranged at the bottom of the driving mechanism (5), a scraper (7) for scraping the bulk medicine is fixed on the outside of the driving rod (6), a connecting rod (8) is arranged on one side of the driving mechanism (5), and a plurality of groups of crushing rollers (9) are fixedly connected to the outside of the connecting rod (8); A support frame (10) is fixed to the top of the base plate (1), a metering pump (11) is installed on the top of the support frame (10), a liquid inlet pipe (12) and a liquid outlet pipe (13) are respectively provided at both ends of the metering pump (11), an exhaust pipe (14) is provided on the outside of the liquid outlet pipe (13), and an exhaust pressure reducing valve (15) is provided at one end of the exhaust pipe (14).

2. The automatic exhaust and pressure relief dosing device according to claim 1 is characterized in that: The driving mechanism (5) comprises a motor (51) mounted on the top of the medicine box (2); a driving wheel (52) is fixedly connected to the outer side of the driving rod (6); and the driving wheel (52) is connected to a driven wheel (53) via a belt drive.

3. The automatic exhaust and pressure relief dosing device according to claim 1 is characterized in that: The top of the filter plate (3) is fixedly connected to a limit block (16), the outer side of the drive rod (6) is fixedly connected to multiple groups of fixed blocks (17), and the outer side of the fixed block (17) is fixedly connected to multiple groups of stirring rods (18).

4. The automatic exhaust and pressure relief dosing device according to claim 1 is characterized in that: A first bevel gear (19) is fixed to the outer side of the driving rod (6), a second bevel gear (20) is meshingly connected to the outer side of the first bevel gear (19), a support plate (21) is fixedly connected to the inner wall of the medicine box (2), and a rotating rod (22) is fixed at the axis of the second bevel gear (20).

5. The automatic exhaust and pressure relief dosing device according to claim 4 is characterized in that: The inner cavity of the rotating rod (22) is slidably connected to a guide rod (23), a spring (24) is arranged on the outer side of the guide rod (23), and one end of the guide rod (23) is fixedly connected to a protrusion (25).

6. The automatic exhaust and pressure relief dosing device according to claim 1 is characterized in that: A flow column (27) is arranged at the top of the liquid inlet pipe (12), a first ball valve (26) is arranged on the outside of the flow column (27), and a second ball valve (28) and a filter (29) are respectively arranged on the outside of the liquid inlet pipe (12).

7. The automatic exhaust and pressure relief dosing device according to claim 1 is characterized in that: Two groups of mounting plates (30) are fixedly connected to the outside of the liquid outlet pipe (13), a third ball valve (31) is arranged on the outside of the liquid outlet pipe (13), and a drug adding port (32) is arranged on the top of the liquid outlet pipe (13).

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