Improved chemical pump

Abstract

The utility model relates to the technical field of chemical pumps, in particular to an improved chemical pump which comprises a bottom plate, the top of the bottom plate is fixedly connected with a chemical pump body, the output end of the inner wall of the chemical pump body is fixedly connected with an impeller, the outer wall of the impeller is connected with a protection structure, the front face of the chemical pump body is fixedly connected with a backing ring, and the front face of the backing ring abuts against a cover plate. Fixing structures are connected to the front ends of the left side and the right side of the chemical pump correspondingly, a first bolt in a protection structure rotates forwards through a cylinder, so that the first bolt is separated from the front face of an impeller, then a sleeve plate and the cylinder are pulled forwards, the sleeve plate and the cylinder are moved out of the chemical pump, and then a new cylinder and a new sleeve plate are connected with the outer wall of the impeller in an inserted mode. The first bolt penetrates through the cylinder in a threaded mode and is fixed to the front face of the impeller in a threaded mode, the cylinder and the sleeve plate shield and protect the impeller, direct damage of cavitation to the impeller is avoided, normal use of the chemical pump is guaranteed, and the service life of the chemical pump is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of improved chemical pumps, in particular to an improved chemical pump. Background Art

[0002] Chemical pumps are used for equipment in industries such as general acid, alkali and salt resistance, chemical industry, pharmaceutical industry, food industry, smelting industry, environmental protection industry, sewage treatment industry and inorganic salt industry.

[0003] For example, in a chemical pump with the authorization announcement number "CN104121226A", the machine seal dynamic ring and the machine seal static ring are respectively sleeved on the impeller shaft, the machine seal dynamic ring and the machine seal static ring are in contact with each other, the front end of the machine seal dynamic ring is arranged between the impeller rear mouth ring and the impeller shaft, the front end of the machine seal dynamic ring and the rear end of the impeller rear buckle ring are in conflict with each other, the rear end of the machine seal static ring is arranged between the inner surface of the pump cover shaft hole and the impeller shaft, and the rear end of the machine seal static ring is in conflict with the pump cover. The above arrangement can effectively prevent materials from entering the machine seal, avoid damage and locking of the machine seal, and greatly extend the service life of the machine seal. However, during the use of the chemical pump, the internal impeller will collide with the pumped liquid, and bubbles will be generated during the collision, and then the bubbles will burst and impact the impeller. This phenomenon is called cavitation, which will cause damage to the impeller for a long time, affect the normal use of the chemical pump, and shorten the service life of the chemical pump. Utility Model Content

[0004] The utility model aims to solve the problem of affecting the normal use of chemical pumps and shortening the service life of chemical pumps, and proposes an improved chemical pump.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An improved chemical pump is designed, comprising a base plate, a chemical pump is fixedly connected to the top of the base plate, an impeller is fixedly connected to the inner wall output end of the chemical pump, a protective structure is connected to the outer wall of the impeller, a gasket is fixedly connected to the front of the chemical pump, a cover plate is pressed against the front of the gasket, the left and right front ends of the chemical pump are respectively connected to fixed structures, and flanges are fixedly connected to the top front opening of the chemical pump and the front opening of the cover plate.

[0007] Preferably, the protective structure includes a cylinder and a sleeve plate, the inner wall of the cylinder is plugged into the outer wall of the impeller, the outer wall of the cylinder is connected to the inner sides of multiple sleeve plates, and the front bolt of the cylinder is connected with a first bolt.

[0008] Preferably, the rear of the outer wall of the first bolt is threadedly connected to the front surface of the impeller, and the inner walls of the plurality of sleeve plates are plugged into the outer wall of the impeller.

[0009] Preferably, outer walls of the two flanges are respectively fixed with square plates.

[0010] Preferably, the fixing structure includes a first curved plate and a second curved plate, the inner sides of the two first curved plates are respectively fixedly connected to the left and right front ends of the chemical pump, the front face of the first curved plate is fitted with the rear end face of the second curved plate, and the inner walls of the first curved plate and the second curved plate are both threadedly connected with a second bolt.

[0011] Preferably, the inner side of the second curved plate is fixedly connected to the outer wall of the cover plate.

[0012] The utility model provides an improved chemical pump, which has the following beneficial effects: the first bolt in the protective structure is rotated forward through the cylinder to disengage the first bolt from the front of the impeller, and then the sleeve plate and the cylinder are pulled forward to move the sleeve plate and the cylinder out of the interior of the chemical pump, and then the new cylinder and sleeve plate are plugged into the outer wall of the impeller, the first bolt thread passes through the cylinder and is fixed to the impeller front thread, the cylinder and the sleeve plate shield and protect the impeller, and cavitation is avoided to directly damage the impeller, thereby ensuring the normal use of the chemical pump and guaranteeing the service life of the chemical pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 for Figure 1 Schematic diagram of the connection relationship between Sinochem pump, impeller and flange;

[0015] Figure 3 for Figure 1 Schematic diagram of the connection relationship between the middle cylinder and the sleeve plate;

[0016] Figure 4 for Figure 2 The structural diagram of A in the figure;

[0017] Figure 5 for Figure 1 Schematic diagram of the structure of B;

[0018] Figure 6 for Figure 1 Schematic diagram of the middle bending rod and plug structure.

[0019] In the figure: 1, bottom plate, 2, protective structure, 201, cylinder, 202, sleeve plate, 203, first bolt, 3, fixing structure, 301, first curved plate, 302, second curved plate, 303, second bolt, 4, chemical pump, 5, cover plate, 6, flange, 7, impeller, 8, gasket, 9, square plate, 10, bent rod, 11, plug. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings:

[0021] Embodiment 1:

[0022] See also Figure 1-6 In the present embodiment, an improved chemical pump comprises a base plate 1, a chemical pump 4 is fixedly connected to the top of the base plate 1, an impeller 7 is fixedly connected to the inner wall output end of the chemical pump 4, how to operate and use the chemical pump 4 is already the prior art, and no further elaboration is given on the model to be selected according to the use requirements, the outer wall of the impeller 7 is connected to a protective structure 2, a gasket 8 is fixedly connected to the front of the chemical pump 4, the gasket 8 is made of rubber, and serves as a connection and sealing for the cover plate 5 and the chemical pump 4, the front of the gasket 8 is tightly pressed against the cover plate 5, the left and right front ends of the chemical pump 4 are respectively connected to a fixed structure 3, and the top front opening of the chemical pump 4 and the front opening of the cover plate 5 are both fixedly connected to a flange 6.

[0023] The protective structure 2 includes a cylinder 201 and a sleeve plate 202. The inner wall of the cylinder 201 is plugged into the outer wall of the impeller 7. The outer wall of the cylinder 201 is connected to the inner sides of multiple sleeve plates 202. The cylinder 201 and the sleeve plates 202 play a shielding and protective role on the impeller 7. The front bolt of the cylinder 201 is connected with a first bolt 203. The rear of the outer wall of the first bolt 203 is threadedly connected to the front of the impeller 7. The first bolt 203 plays a fixing role on the cylinder 201 and the impeller 7. The inner walls of multiple sleeve plates 202 are all plugged into the outer wall of the impeller 7.

[0024] The first bolt 203 in the protective structure 2 is then rotated forward through the cylinder 201 to disengage the first bolt 203 from the front of the impeller 7, and then the sleeve 202 and the cylinder 201 are pulled forward to move the sleeve 202 and the cylinder 201 out of the interior of the chemical pump 4, and then the new cylinder 201 and the sleeve 202 are plugged into the outer wall of the impeller 7, and the first bolt 203 is threaded through the cylinder 201 and fixed with the front thread of the impeller 7. The cylinder 201 and the sleeve 202 shield and protect the impeller 7, avoiding direct damage to the impeller 7 caused by cavitation, thereby ensuring the normal use of the chemical pump and the service life of the chemical pump.

[0025] The outer walls of the two flanges 6 are respectively fixed with square plates 9, and the fixing structure 3 includes a first curved plate 301 and a second curved plate 302. The inner sides of the two first curved plates 301 are respectively fixed with the front ends of the left and right sides of the chemical pump 4, and the front face of the first curved plate 301 fits with the rear end face of the second curved plate 302. The inner walls of the first curved plate 301 and the second curved plate 302 are both threadedly connected with second bolts 303. The second bolts 303 fix the first curved plate 301 and the second curved plate 302, and the inner side of the second curved plate 302 is fixed with the outer wall of the cover plate 5.

[0026] Working principle:

[0027] Chemical pump use:

[0028] The flange on the top of the chemical pump 4 and the flange in front of the cover plate 5 are connected to the external pipeline, and then the pipeline connected in front is plugged into the external liquid. At this time, the chemical pump 4 is powered on, and the output end drives the impeller 7 to rotate. The rotating impeller 7 will discharge the internal air above the chemical pump 4. At this time, negative pressure will be formed to cooperate with the front pipeline to draw the liquid into the chemical pump 4, and finally discharged from the upper pipeline.

[0029] Chemical pump impeller protection replacement:

[0030] The second bolt 303 is rotated forward to disengage the second bolt 303 from the first curved plate 301, and then the top cover 5 is pulled forward to disengage the top cover 5 from the front of the chemical pump 4, and then the first bolt 203 is rotated forward through the cylinder 201 to disengage the first bolt 203 from the front of the impeller 7, and then the sleeve plate 202 and the cylinder 201 are pulled forward to move the sleeve plate 202 and the cylinder 201 out of the interior of the chemical pump 4, and then the new cylinder 201 and the sleeve plate 202 are plugged into the outer wall of the impeller 7, the first bolt 203 is threaded through the cylinder 201 and fixed with the front thread of the impeller 7, the cylinder 201 and the sleeve plate 202 play a shielding and protective role on the impeller 7, and then the top cover 5 is fitted with the front of the chemical pump 4, and then the second bolt 303 is threaded through the first curved plate 301 and the second curved plate 302.

[0031] Embodiment 2:

[0032] See also Figure 1-6 : In this embodiment, an improved chemical pump also includes a bent rod 10 and a plug 11, the outer wall of the bent rod 10 is plugged into the inner wall of the square plate 9, the end of the bent rod 10 is fixedly connected to the outer wall of the plug 11, and the inner wall of the plug 11 is plugged into the inner wall of the flange 6.

[0033] Working principle:

[0034] When the chemical pump 4 is placed and transported, the plug 11 can be inserted into the flange 6 to seal the cover plate 5 and the top of the chemical pump 4 to prevent impurities from entering.

[0035] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. An improved chemical pump, comprising a base plate (1), characterized in that: A chemical pump (4) is fixedly connected to the top of the base plate (1), an impeller (7) is fixedly connected to the inner wall output end of the chemical pump (4), an outer wall of the impeller (7) is connected to a protective structure (2), a gasket (8) is fixedly connected to the front of the chemical pump (4), a cover plate (5) is pressed against the front of the gasket (8), the front ends of the left and right sides of the chemical pump (4) are respectively connected to fixed structures (3), and a flange (6) is fixedly connected to the top front opening of the chemical pump (4) and the front opening of the cover plate (5).

2. An improved chemical pump according to claim 1, characterized in that: The protective structure (2) comprises a cylinder (201) and a sleeve plate (202); the inner wall of the cylinder (201) is plugged into the outer wall of the impeller (7); the outer wall of the cylinder (201) is connected to the inner sides of a plurality of sleeve plates (202); and the front bolt of the cylinder (201) is connected with a first bolt (203).

3. An improved chemical pump according to claim 2, characterized in that: The rear of the outer wall of the first bolt (203) is threadedly connected to the front surface of the impeller (7), and the inner walls of the plurality of sleeve plates (202) are plugged into the outer wall of the impeller (7).

4. The improved chemical pump according to claim 1, characterized in that: The outer walls of the two flanges (6) are respectively fixedly connected with square plates (9).

5. The improved chemical pump according to claim 1, characterized in that: The fixing structure (3) comprises a first curved plate (301) and a second curved plate (302), the inner sides of the two first curved plates (301) are respectively fixedly connected to the left and right front ends of the chemical pump (4), the front face of the first curved plate (301) is fitted with the rear end face of the second curved plate (302), and the inner walls of the first curved plate (301) and the second curved plate (302) are both threadedly connected with a second bolt (303).

6. The improved chemical pump according to claim 5, characterized in that: The inner side of the second curved plate (302) is fixedly connected to the outer wall of the cover plate (5).

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