Pump body mounting structure of chemical centrifugal pump

Abstract

The utility model discloses a pump body mounting structure of a chemical centrifugal pump, which comprises a bottom plate, a pump body is arranged on one side of the upper end of the bottom plate, a motor is arranged on one side of the pump body, a power output shaft end of the motor is in transmission connection with a power input shaft end of the pump body, and a fixing mechanism is arranged among the pump body, the motor and the bottom plate. The fixing mechanism comprises fixing blocks, mounting holes, fixing screws, ratchets, mounting shafts and pawls, the fixing blocks are fixedly arranged on the two sides of the surface of the motor and the two sides of the surface of the pump body, the mounting holes are formed in the middles of the fixing blocks, the fixing screws are arranged between the mounting holes and the bottom plate, and the ratchets are fixedly arranged on the surfaces of the outer sides of the fixing screws. The anti-loosening structure is added to the fixing screw of the centrifugal pump, so that the situation that the screw rotates reversely and loosens due to vibration can be effectively prevented, the installation stability of the centrifugal pump can be effectively guaranteed, and the installation effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pump body installation technical field, concretely is a pump body installation structure of chemical centrifugal pump. BACKGROUND

[0002] Chemical centrifugal pump is important equipment in chemical production, and compared with other kinds of pumps, it has the advantages of simple structure, not easy to wear, convenient adjustment and high efficiency, therefore, chemical centrifugal pump has been widely applied, and the working principle of chemical centrifugal pump is that under the condition that the pump is full of water, the impeller rotates to generate centrifugal force, and the water in the impeller channel is thrown to the periphery under the action of centrifugal force and flows into the pump shell, so that the pressure at the center of the impeller is reduced, which is lower than the pressure in the water inlet pipe, and the water flows into the impeller from the water suction pool under the action of the pressure difference.

[0003] In the prior art, the centrifugal pump is usually fixed by tightening screws, but the screw fixing mode in the prior art has the disadvantage that the screws are easy to loosen, and the vibration generated during the operation of the centrifugal pump is the main reason for the loosening of the screws, especially under the condition of high speed or unstable load, and in the installation structure of the pump body in the prior art, there is no corresponding anti-loosening installation structure, therefore, the pump body installation structure of the chemical centrifugal pump needs to be improved. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a pump body installation structure of chemical centrifugal pump to solve the problems in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a pump body installation structure of chemical centrifugal pump, including bottom plate, the bottom plate upper end one side is provided with pump body, one side of pump body is provided with motor, the fixed mechanism that is provided with between pump body, motor and bottom plate, the fixed mechanism includes fixed block, mounting hole, fixed screw, ratchet, mounting shaft, pawl, the fixed block both sides are fixedly provided with fixed block on the surface of motor and pump body, the middle part of fixed block is equipped with mounting hole, the mounting hole is provided with fixed screw between bottom plate, the outer surface of fixed screw is fixedly provided with ratchet, the mounting shaft is fixedly arranged on the bottom plate upper end at fixed block one side, the surface of mounting shaft is rotatably provided with pawl through bearing.

[0006] Preferably, the bottom plate upper end surface is provided with a slot on the side of the pawl, the fixed screw is provided with a isolating cover at the upper end, and the isolating cover is provided with a plug at the lower end.

[0007] Preferably, the upper end of the mounting shaft is provided with a compression screw that is screwed into place by a thread. Tightening the compression screw can fix the pawl. When the fixing screw needs to be manually removed, the pawl will obstruct the removal. At this time, the pawl is manually moved so that it is close to the connecting block (compression spring), and then the compression screw is tightened to fix the pawl. At this time, the pawl and the ratchet are misaligned and no longer interlocked, so that the fixing screw can be easily rotated and removed manually.

[0008] Preferably, a limiting protrusion is fixedly provided on one side of the pawl at the upper end of the base plate. The limiting protrusion can restrict the rotation direction of the pawl, so that the pawl and the ratchet can engage with each other to restrict the rotation direction of the fixing screw.

[0009] Preferably, a connecting block is fixedly provided on one side of the pawl on the surface of the base plate. A spring is provided between the connecting block and the pawl. The spring can automatically push the pawl to reset, so that the pawl and the ratchet can engage with each other. When the pawl and the ratchet are engaged, they do not obstruct the rotation of the fixing screw in the tightening direction. If the fixing screw wants to rotate in the loosening direction under the vibration of the motor and pump body, the pawl can lock the ratchet to form a limit. This can effectively prevent the fixing screw from loosening, thereby improving the installation stability of the centrifugal pump and improving the installation effect. Furthermore, when tightening the fixing screw, the pawl can be fixed to allow it to rotate and open before the fixing screw is fully tightened. After the fixing screw is tightened and fixed, the pawl can be loosened to allow the pawl and the ratchet to engage.

[0010] Preferably, the power output shaft of the electric motor is connected to the power input shaft of the pump body, so that the electric motor can easily drive the pump body to work.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. In this utility model, after the fixing screw is tightened, the pawl and ratchet can engage with each other. If the fixing screw is to be loosened, the pawl and ratchet can engage with each other to limit the rotation direction of the fixing screw. This can effectively prevent the screw from being loosened due to vibration, thus effectively ensuring the installation stability of the centrifugal pump and improving the installation effect.

[0013] 2. When this utility model is used, the insert block can be inserted into the slot to cover the outer surface of the fixing screw and the pawl. At this time, the fixing screw and other structures can be protected and isolated by the isolation cover, which can effectively prevent corrosive chemical liquids from dripping onto the fixing screw and corroding it. Attached Figure Description

[0014] Figure 1This is a schematic diagram of the overall structure of the pump body installation structure of a chemical centrifugal pump according to the present invention;

[0015] Figure 2 This is a side view of the pump body mounting structure of a chemical centrifugal pump according to the present invention;

[0016] Figure 3 This is a top view of the pump body mounting structure of a chemical centrifugal pump according to the present invention;

[0017] Figure 4 This utility model relates to a pump body mounting structure for a chemical centrifugal pump. Figure 1 Enlarged view at point A in the middle;

[0018] Figure 5 This utility model relates to a pump body mounting structure for a chemical centrifugal pump. Figure 3 A magnified view of point B in the middle.

[0019] In the diagram: 1. Base plate; 2. Pump body; 3. Motor; 4. Fixing block; 5. Mounting hole; 6. Fixing screw; 7. Racket; 8. Mounting shaft; 9. Pawl; 10. Slot; 11. Isolation cover; 12. Insert block; 13. Pressing screw; 14. Limiting protrusion; 15. Connecting block; 16. Spring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-5 This utility model provides a technical solution: a pump body 2 mounting structure for a chemical centrifugal pump, including a base plate 1. The pump body 2 is mounted on one side of the upper end of the base plate 1, and a motor 3 is mounted on one side of the pump body 2. A fixing mechanism is provided between the pump body 2, the motor 3, and the base plate 1. The fixing mechanism includes a fixing block 4, a mounting hole 5, a fixing screw 6, a ratchet 7, a mounting shaft 8, and a pawl 9. Fixing blocks 4 are fixedly mounted on both sides of the surface of the motor 3 and the pump body 2. The fixing block 4 has a mounting hole 5 in the middle. A fixing screw 6 is provided between the mounting hole 5 and the base plate 1. A ratchet 7 is fixedly mounted on the outer surface of the fixing screw 6. A mounting shaft 8 is fixedly mounted on one side of the fixing block 4 at the upper end of the base plate 1. A pawl 9 is movably mounted on the surface of the mounting shaft 8 through a bearing.

[0022] The upper surface of the base plate 1 has a slot 10 on one side of the pawl 9. The upper end of the fixing screw 6 is provided with an isolation cover 11, and the lower end of the isolation cover 11 is provided with a plug 12. When the plug 12 is inserted into the slot 10, the isolation cover 11 can be sleeved and isolated on the outer surface of the fixing screw 6 and the pawl 9. At this time, the isolation cover 11 can protect and isolate the fixing screw 6 and other structures, which can effectively prevent corrosive chemical liquids from dripping onto the fixing screw 6 and corroding it.

[0023] The upper end of the mounting shaft 8 is provided with a screw 13 that is screwed into the thread. Tightening the screw 13 can fix the pawl 9. When it is necessary to manually remove the fixing screw 6, the pawl 9 will obstruct the removal. At this time, manually move the pawl 9 so that it is close to the connecting block 15 (compression spring 16), and then tighten the screw 13 to fix the pawl 9. At this time, the pawl 9 and the ratchet 7 are misaligned and no longer interlocked, so that the fixing screw 6 can be easily rotated and removed manually.

[0024] The upper end of the base plate 1 is fixedly provided with a limiting protrusion 14 on one side of the pawl 9. The limiting protrusion 14 can limit the rotation direction of the pawl 9, so that the pawl 9 and the ratchet 7 can engage with each other to limit the rotation direction of the fixing screw 6.

[0025] A connecting block 15 is fixedly installed on one side of the pawl 9 on the surface of the base plate 1. A spring 16 is installed between the connecting block 15 and the pawl 9. The spring 16 can automatically push the pawl 9 to reset, so that the pawl 9 and the ratchet 7 can engage with each other. When the pawl 9 and the ratchet 7 are engaged, they do not obstruct the rotation of the fixing screw 6 in the tightening direction. If the fixing screw 6 wants to rotate in the loosening direction under the vibration of the motor 3 and the pump body 2, the pawl 9 can lock the ratchet 7 to form a limit. This can effectively prevent the fixing screw 6 from loosening, thereby improving the installation stability of the centrifugal pump and improving the installation effect. Furthermore, when tightening the fixing screw 6, before the fixing screw 6 is fully tightened, the pawl 9 can be fixed so that the pawl 9 rotates and opens. After the fixing screw 6 is tightened and fixed, the pawl 9 can be loosened so that the pawl 9 and the ratchet 7 engage.

[0026] The power output shaft of the electric motor 3 is connected to the power input shaft of the pump body 2, and the electric motor 3 can easily drive the pump body 2 to work.

[0027] Working principle: When using this device, the pump body 2 and the motor 3 are fixed to the outer surface of the upper end of the base plate 1 by fixing screws 6. When the fixing screws 6 are tightened, the pump body 2 and the motor 3 are used. Figure 5From the perspective shown, the fixing screw 6 will be tightened by rotating clockwise. At this time, the ratchet 7 and pawl 9 on the surface of the fixing screw 6 will not obstruct each other, thus not affecting the tightening of the fixing screw 6. After the fixing screw 6 is tightened, the pawl 9 and ratchet 7 can engage with each other. If the fixing screw 6 is to be loosened (rotated counterclockwise), the pawl 9 and ratchet 7 can engage with each other to limit the rotation direction of the fixing screw 6. This can effectively prevent the screw from being loosened due to vibration. This can effectively ensure the installation stability of the centrifugal pump and improve the installation effect.

[0028] Furthermore, when this device is used, the insert block 12 is inserted into the slot 10, and the isolation cover 11 can be fitted onto the outer surface of the fixing screw 6 and the pawl 9. At this time, the isolation cover 11 can protect and isolate the fixing screw 6 and other structures, thus effectively preventing corrosive chemical liquids from dripping onto the fixing screw 6 and corroding it.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pump body mounting structure for a chemical centrifugal pump, comprising a base plate (1), characterized in that: A pump body (2) is provided on one side of the upper end of the base plate (1), and a motor (3) is provided on one side of the pump body (2). A fixing mechanism is provided between the pump body (2), the motor (3) and the base plate (1). The fixing mechanism includes a fixing block (4), a mounting hole (5), a fixing screw (6), a ratchet (7), a mounting shaft (8), and a pawl (9). Fixing blocks (4) are fixedly provided on both sides of the surface of the motor (3) and the pump body (2). A mounting hole (5) is provided in the middle of the fixing block (4). A fixing screw (6) is provided between the mounting hole (5) and the base plate (1). A ratchet (7) is fixedly provided on the outer surface of the fixing screw (6). A mounting shaft (8) is fixedly provided on one side of the fixing block (4) at the upper end of the base plate (1). A pawl (9) is movably provided on the surface of the mounting shaft (8) through a bearing.

2. The pump body mounting structure of a chemical centrifugal pump according to claim 1, characterized in that: The upper surface of the base plate (1) has a slot (10) on one side of the pawl (9), the upper end of the fixing screw (6) has an isolation cover (11), and the lower end of the isolation cover (11) has a plug (12).

3. The pump body mounting structure of a chemical centrifugal pump according to claim 1, characterized in that: The upper end of the mounting shaft (8) is provided with a compression screw (13) by means of a threaded engagement.

4. The pump body mounting structure of a chemical centrifugal pump according to claim 1, characterized in that: The upper end of the base plate (1) is fixedly provided with a limiting protrusion (14) on one side of the pawl (9).

5. The pump body mounting structure of a chemical centrifugal pump according to claim 1, characterized in that: A connecting block (15) is fixedly provided on the surface of the base plate (1) on one side of the pawl (9), and a spring (16) is provided between the connecting block (15) and the pawl (9).

6. The pump body mounting structure of a chemical centrifugal pump according to claim 1, characterized in that: The power output shaft of the electric motor (3) is connected to the power input shaft of the pump body (2) via a transmission connection.

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