Sealing structure for leakage-free ceramic pump

Abstract

The utility model discloses a sealing structure for a leakage-free ceramic pump. The sealing structure comprises a sealing end cover on the outer side, a daub layer in the middle and a ceramic layer on the inner side. The sealing end cover located on the outer side and the ceramic layer located on the inner side are bonded into a whole through the middle cement gum layer, the sealing end cover and the ceramic layer are both arranged to be of a U-shaped cover body structure, the inner space of the ceramic layer is arranged to be an impeller cavity, and the impeller cavity is used for containing an impeller of the ceramic pump. Both the internal ceramic layer and the external sealing end cover in the device do not need to be provided with shaft holes and are arranged to be of a vertical plane structure, after the impeller rotates, water flow is led in from the right side and then discharged upwards from the liquid outlet end, the ceramic layer and the sealing end cover are integrated vertical planes, and the sealing performance can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of leak-free ceramic pump technology, specifically a sealing structure for leak-free ceramic pumps. Background Technology

[0002] The sealing structure of existing ceramic pumps is as follows: Figure 5 As shown, the entire sealing structure first needs to have a cavity for housing the impeller of the ceramic pump. In addition, the most important part is to have a shaft hole for accommodating the main shaft of the ceramic pump at the rear position. After the impeller is installed on the main shaft of the ceramic pump, the impeller is located in the impeller cavity, while the main shaft needs to extend a part and be placed in the shaft hole. An end cover is then installed on the outer part of the shaft hole for sealing. The above technical structure can achieve sealing through certain sealing fits. However, the problem is that the liquid flow guided by the impeller is introduced from the right side to the left side, which will cause the fluid to impact the end cover on the left side, and over time it will affect the sealing effect.

[0003] Existing technologies also include structures that improve the sealing effect of ceramic pumps. For example, the "Novel Sealing Structure for Ceramic Pumps" disclosed in Publication (Announcement) No. CN220365757U can increase the sealing performance between the connecting shaft and the ceramic pump, avoid liquid leakage, and ensure the safe use of the ceramic pump.

[0004] For example, the "Ceramic Pump with Water-Sealing Structure" disclosed in Publication (Announcement) No. CN220869625U can effectively improve the sealing between the valve stem and the round hole, prevent leakage, and can automatically clean the ceramic pump body without manual cleaning.

[0005] For example, the "Static Sealing Structure for Assembly and Dating Surface of Ceramic Pump" disclosed in Publication (Announcement) No. CN212564373U, in which the flexible bushing undergoes radial deformation, and a tight fit is formed between the flexible bushing and the assembly and docking surface of the pump body metal frame, and between the flexible bushing and the hard bushing.

[0006] The above technical solutions all employ a specific mechanical structure to achieve a mechanical sealing fit between end faces and between bearings, and their structures are similar to... Figure 5 The mechanical seal structure is used, but no matter how it is installed, liquid leakage will still occur, making it impossible to achieve a truly leak-free design.

[0007] Therefore, in order to solve the above problems, it is necessary to develop a sealing structure for leak-free ceramic pumps that has a reasonable structure and can effectively improve sealing performance. Summary of the Invention

[0008] The purpose of this invention is to address the shortcomings of existing technologies by providing a sealing structure for leak-free ceramic pumps; the technical solution is as follows:

[0009] A sealing structure for a leak-free ceramic pump includes an outer sealing end cap, a middle putty layer, and an inner ceramic layer; the outer sealing end cap and the inner ceramic layer are bonded together by the middle putty layer, and both the sealing end cap and the ceramic layer are configured as U-shaped cover structures, and the space inside the ceramic layer is configured as an impeller cavity for housing the impeller of the ceramic pump.

[0010] The left end face of the impeller of the ceramic pump is set as a vertical plane, and the left end face of the corresponding ceramic layer is set as a vertical plane. When the impeller is installed, a rotation gap is left between it and the vertical plane of the ceramic layer.

[0011] Furthermore, the sealing end cap consists of two detachable left end caps and a right end cap.

[0012] Furthermore, both the left and right end caps are provided with locking parts, and locking bolts are installed on the locking parts accordingly, so as to lock and fix the left and right end caps in place.

[0013] Furthermore, the sealing end cap is also equipped with a vertical liquid outlet end, which extends downward and communicates with the impeller cavity. By setting the direction of the impeller blades, the liquid inside the impeller cavity is discharged from the liquid outlet end under the action of the impeller.

[0014] Furthermore, the liquid outlet end is also provided with a mounting flange, which has mounting holes.

[0015] Furthermore, a pump cover is installed at the port of the ceramic layer, which is positioned close to the end face of the blades on the impeller.

[0016] Furthermore, the impeller cavity includes an inner cavity and an outer cavity located at the port. The impeller is placed in the inner cavity, the impeller blades extend into the outer cavity, and the pump cover is disposed in the outer cavity.

[0017] Furthermore, the inner diameter of the inner cavity is larger than the inner diameter of the outer cavity, the impeller is located behind the inner cavity, and a liquid flow gap is left between the impeller and the end face of the inner cavity.

[0018] Beneficial effects: This utility model has the following beneficial effects:

[0019] 1) In this device, neither the internal ceramic layer nor the external sealing end cap needs to be provided with shaft holes. Both are designed as vertical planar structures. After the impeller rotates, the water is introduced from the right side and then discharged upward from the liquid outlet. The ceramic layer and the sealing end cap are both integral vertical planes, which can effectively increase the sealing performance.

[0020] 2) This device is specifically equipped with an outer sealing end cap, a middle putty layer and an inner ceramic layer. The inner integrated ceramic layer has the characteristics of impact resistance, wear resistance and corrosion resistance. Then, it is bonded and fixed into a whole by the middle putty layer and the outer sealing end cap, and the overall structure is stable.

[0021] 3) The sealing end cap of this device is configured as a detachable left end cap and a right end cap, which combines the stability of the outer sealing end cap and the corrosion resistance of the inner ceramic layer.

[0022] 4) The liquid outlet in this device is located at the top position to facilitate liquid discharge. After being guided by the impeller, the liquid flows from right to left, but after encountering the obstruction of the ceramic layer, it flows upward and exits from the liquid outlet. In addition, the liquid outlet is also equipped with a mounting flange and mounting holes for easy connection with external pipelines. The overall structure is very reasonable.

[0023] 5) The impeller chamber in this device is configured as an inner chamber and an outer chamber, which are respectively used to install the impeller and the outer pump cover. The impeller itself is suspended, and a certain flow clearance needs to be left in the upper and lower space. The impeller blades are installed in conjunction with the pump cover. The overall structure is quite reasonable. Attached Figure Description

[0024] Figure 1 This is a structural diagram of the present utility model;

[0025] Figure 2 This is a structural diagram of the sealing end cap in this utility model;

[0026] Figure 3 This is a structural diagram of the ceramic layer in this utility model;

[0027] Figure 4 This is a diagram showing the installation of this utility model with a ceramic pump impeller.

[0028] Figure 5 Diagram of existing technology structure;

[0029] Among them, the sealing end cover 1, the putty layer 2, the ceramic layer 3, the impeller cavity 4, the impeller 5, the left end cover 101, the right end cover 102, the locking part 103, the locking bolt 104, the liquid outlet end 6, the blade 7, the mounting flange 8, the mounting hole 9, the pump cover 10, the inner cavity 401, the outer cavity 402, and the flow gap 403. Detailed Implementation

[0030] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. These embodiments are implemented under the premise of the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0031] like Figure 1 As shown, a sealing structure for a leak-free ceramic pump includes an outer sealing end cap 1, a middle putty layer 2, and an inner ceramic layer 3; the outer sealing end cap 1 and the inner ceramic layer 3 are bonded together by the middle putty layer 2, and both the sealing end cap 1 and the ceramic layer 3 are configured as U-shaped cover structures. The space inside the ceramic layer 3 is configured as an impeller cavity 4, which is used to house the impeller 5 of the ceramic pump.

[0032] like Figure 4 As shown, the left end face of the impeller 5 of the ceramic pump is set as a vertical plane, and the left end face of the corresponding ceramic layer 3 is set as a vertical plane. When the impeller 5 is installed, a rotation gap is left between it and the vertical plane of the ceramic layer 3.

[0033] like Figure 2 As shown, the sealing end cap 1 is composed of two detachable left end caps 101 and right end caps 102; both the left end cap 101 and the right end cap 102 are provided with locking parts 103, and locking bolts 104 are installed on the locking parts 103 respectively, and the left end cap 101 and the right end cap 102 are locked and fixed by the locking bolts 104.

[0034] The sealing end cap 1 is also equipped with a vertical liquid outlet 6, which extends downward and communicates with the impeller cavity 4. By setting the direction of the blades 7 of the impeller 5, the liquid inside the impeller cavity 4 is discharged from the liquid outlet 6 under the action of the impeller 5.

[0035] The liquid outlet end 6 is also provided with a mounting flange 8, which has mounting holes 9.

[0036] A pump cover 10 is also installed at the port of the ceramic layer 3, which is set close to the end face of the blade 7 on the impeller 5.

[0037] like Figure 3 As shown, the impeller cavity 4 includes an inner cavity 401 and an outer cavity 402 located at the port. The impeller 5 is placed in the inner cavity 401, and the blades 7 of the impeller 5 extend into the outer cavity 402. The pump cover 10 is disposed in the outer cavity 402.

[0038] The inner diameter of the inner cavity 401 is larger than the inner diameter of the outer cavity 402. The impeller 5 is located behind the inner cavity 401, and a liquid flow gap 403 is left between the impeller 5 and the end face of the inner cavity 401.

[0039] The specific working principle of this device is as follows: Figure 5 As shown, existing end cap designs require a shaft hole on the end cap and a sealing cover plate to seal the shaft hole, while the sealing structure of this device is as follows: Figure 1As shown, the internal ceramic layer is a one-piece structure; neither the internal ceramic layer nor the external sealing end cap requires shaft holes, and both are designed as vertical planar structures. And as... Figure 5 As shown, the impeller of the ceramic pump used in conjunction with it is designed with a vertical planar structure on the left end face. The main shaft of the ceramic pump is installed on the right end of the impeller. The main shaft is embedded in the impeller and does not protrude. The right end of the main shaft is fixed in the ceramic pump by a mechanical bearing, so that the impeller is suspended in the impeller cavity. After the impeller is installed, the planar structures on both sides are set accordingly. After the impeller rotates, water is introduced from the right side and then discharged upward from the outlet end. The ceramic layer and the sealing end cover are both integral vertical planes, which can effectively increase the sealing performance. Because there is no need to set shaft holes, etc., the ceramic layer is an integral planar structure, so there is no need to worry about liquid leakage.

[0040] In addition, the sealing structure in this device is specifically composed of an outer sealing end cap, a middle putty layer, and an inner ceramic layer. The inner integrated ceramic layer has the characteristics of impact resistance, wear resistance, and corrosion resistance. Then, it is bonded and fixed together with the middle putty layer and the outer sealing end cap, making the overall structure stable.

[0041] In this device, the outer sealing end cap is configured as a detachable left and right end cap, which facilitates the installation of the inner ceramic layer through the mat layer. Specifically, the mat is first applied to the ceramic layer, and then the left and right end caps are installed respectively. The left and right end caps are then installed using locking parts and locking bolts to lock and fix the end caps on both sides, thus completing the three-layer structure of the sealing structure of this device, which combines the stability of the outer sealing end cap with the corrosion resistance of the inner ceramic layer.

[0042] In this device, the liquid outlet is located at the top position to facilitate liquid discharge. After being guided by the impeller, the liquid flows from right to left, but after encountering the obstruction of the ceramic layer, it flows upward and exits from the liquid outlet. In addition, the liquid outlet is also equipped with a mounting flange and mounting holes for easy connection with external pipelines. The overall structure is very reasonable.

[0043] The impeller chamber in this device is configured as an inner chamber and an outer chamber, which are respectively used to install the impeller and the outer pump cover. The impeller itself is suspended, and a certain flow clearance needs to be left in the upper and lower space. The impeller blades are installed in conjunction with the pump cover. The overall structure is quite reasonable.

[0044] The above-described specific embodiments are merely preferred embodiments of this utility model and are not intended to limit the implementation of this utility model or the scope of the claims. All equivalent changes and modifications made in accordance with the scope of protection of this utility model patent application should be included within the scope of this utility model patent application.

Claims

1. A sealing structure for a leak-free ceramic pump, characterized in that: It includes an outer sealing end cap (1), a middle putty layer (2) and an inner ceramic layer (3); the outer sealing end cap (1) and the inner ceramic layer (3) are bonded together by the middle putty layer (2), and the sealing end cap (1) and the ceramic layer (3) are both set as U-shaped cover structures. The space inside the ceramic layer (3) is set as an impeller cavity (4), which is used to place the impeller (5) of the ceramic pump. The left end face of the impeller (5) of the ceramic pump is set as a vertical plane, and the left end face of the corresponding ceramic layer (3) is set as a vertical plane. When the impeller (5) is installed, a rotation gap is left between it and the vertical plane of the ceramic layer (3).

2. The sealing structure for a leak-free ceramic pump according to claim 1, characterized in that: The sealing end cap (1) consists of two detachable left end caps (101) and right end caps (102).

3. The sealing structure for a leak-free ceramic pump according to claim 2, characterized in that: Both the left end cap (101) and the right end cap (102) are provided with locking parts (103), and locking bolts (104) are installed on the locking parts (103) respectively. The left end cap (101) and the right end cap (102) are locked and fixed by the locking bolts (104).

4. The sealing structure for a leak-free ceramic pump according to claim 1, characterized in that: The sealing end cap (1) is also equipped with a vertical liquid outlet (6), which extends downward and communicates with the impeller cavity (4). By setting the direction of the blades (7) of the impeller (5), the liquid inside the impeller cavity (4) is discharged from the liquid outlet (6) under the action of the impeller (5).

5. A sealing structure for a leak-free ceramic pump according to claim 4, characterized in that: The liquid outlet end (6) is also provided with a mounting flange (8), which has mounting holes (9).

6. A sealing structure for a leak-free ceramic pump according to claim 1, characterized in that: A pump cover (10) is also installed at the port of the ceramic layer (3), which is set close to the end face of the blade (7) on the impeller (5).

7. A sealing structure for a leak-free ceramic pump according to claim 6, characterized in that: The impeller cavity (4) includes an inner cavity (401) and an outer cavity (402) located at the port. The impeller (5) is placed in the inner cavity (401), and the blades (7) of the impeller (5) extend into the outer cavity (402). The pump cover (10) is set in the outer cavity (402).

8. A sealing structure for a leak-free ceramic pump according to claim 7, characterized in that: The inner diameter of the inner cavity (401) is larger than the inner diameter of the outer cavity (402). The impeller (5) is located behind the inner cavity (401), and a liquid flow gap (403) is left between the impeller (5) and the end face of the inner cavity (401).

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