Pump shell with high sealing performance

Abstract

The utility model provides a pump shell with high sealing performance, and belongs to the technical field of pump shells. The high-sealing-performance pump shell comprises a pump shell body and a sealing mechanism, the pump shell body comprises a first shell body and a second shell body, the first shell body and the second shell body are mutually fixed, the sealing mechanism comprises a sealing seat and a sealing ring, the sealing seat is installed on the bottom side of the inner wall of the first shell body, and a sealing groove is formed in the bottom of the sealing seat; a water swelling strip is mounted on the inner ring wall of the sealing seat, the joint of the first shell and the second shell can be covered by using the sealing seat and the sealing ring, the joint of the sealing seat and the sealing ring can be shielded by using the sealing ring and the sealing groove, and finally, after water passes through the pump shell by using the water swelling strip, the water swelling strip can be used for sealing the joint of the first shell and the second shell. According to the technical scheme, when the sealing ring is aged and the elasticity of the sealing ring is invalid, the sealing performance of the pump shell can be guaranteed all the time, and the situation of liquid leakage is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of pump casings, in particular to a pump casing with high sealing performance. Background Art

[0002] A centrifugal pump works by using the rotation of the impeller to cause water to move centrifugally. Before starting the pump, the pump casing and the suction pipe must be filled with water, and then the motor is started so that the pump shaft drives the impeller and water to rotate at high speed. The water moves centrifugally and is thrown to the outer edge of the impeller, flowing into the water pressure pipeline of the pump through the flow channel of the volute pump casing.

[0003] When the centrifugal pump is working, in order to generate sufficient negative pressure, its casing needs to have good sealing performance, especially the water pipe connected at the back, there must be a good anti-leakage structure between the centrifugal pump casing, otherwise it will lead to insufficient internal negative pressure. Most pump casings are not integrated, but are formed by the combination of left pump casing and right pump casing. The left pump casing and the right pump casing are connected by screws, and the sealing between them depends on the sealing ring. However, with the passage of time, the sealing ring will age, resulting in its own elastic failure, and it can no longer guarantee the sealing, which is prone to leakage, thus affecting the normal use of the pump. Utility Model Content

[0004] In order to make up for the above deficiencies, the utility model provides a pump casing with high sealing performance.

[0005] The utility model is achieved in this way:

[0006] A pump casing with high sealing performance comprises a pump casing body and a sealing mechanism, wherein the pump casing body comprises a first shell and a second shell, the first shell and the second shell are fixed to each other, the sealing mechanism comprises a sealing seat and a sealing ring, and the sealing seat is installed on the bottom side of the inner wall of the first shell, a sealing groove is provided at the bottom of the sealing seat, a water-swelling waterstop strip is installed on the inner ring wall of the sealing seat, a connecting ring is installed on the upper side of the inner wall of the second shell, the sealing ring is installed on the top of the connecting ring, the sealing ring and the sealing groove are engaged with each other, and the water-swelling waterstop strip covers the joint between the sealing ring and the sealing groove.

[0007] The beneficial effect of adopting the above-mentioned further scheme is that, through the use of the sealing seat and the sealing ring, the joint between the first shell and the second shell can be covered, and through the use of the sealing ring and the sealing groove, the joint between the sealing seat and the sealing ring can be covered. Finally, through the use of the water-swellable waterstop strip, after water passes through the pump casing, the water-swellable waterstop strip will expand, thereby fitting tightly with the connecting ring, and ultimately preventing the water in the pump from flowing out from the joint between the sealing seat and the sealing ring. Therefore, when the sealing ring ages and causes its own elastic failure, the sealing of the pump casing can always be guaranteed to avoid leakage.

[0008] Furthermore, the water-swellable waterstop strip is annular, the bottom of the water-swellable waterstop strip exceeds the bottom of the sealing seat, and the outer side of the water-swellable waterstop strip is adhered to the inner ring wall of the sealing seat by waterproof glue.

[0009] The beneficial effect of adopting the above-mentioned further scheme is that the water-swellable waterstop strip is adhered to the inner ring wall of the sealing seat by using waterproof glue. When encountering water, the water-swellable waterstop strip will not fall off from the inner ring wall of the sealing seat. At the same time, by limiting the size of the water-swellable waterstop strip, it can fit tightly together with the connecting ring when it expands, thereby covering the joint between the sealing seat and the sealing ring.

[0010] Furthermore, rubber sealing rings are installed on the inner wall and the outer wall of the sealing ring, and the rubber sealing rings are pressed against the side walls of the sealing groove.

[0011] The beneficial effect of adopting the above further solution is that the sealing performance between the sealing ring and the sealing groove is improved by using the rubber sealing ring.

[0012] Furthermore, the width of the connecting ring is greater than the width of the sealing ring, and the distance between the outer edge of the connecting ring and the outer edge of the sealing ring, and the distance between the inner edge of the connecting ring and the inner edge of the sealing ring is 3-6 mm.

[0013] The beneficial effect of adopting the above-mentioned further scheme is that by limiting the size of the connecting ring and the sealing ring, after the sealing ring enters the sealing groove, the connecting ring can cover the joint between the sealing ring and the sealing groove, and when water flows through, it will not flow in from the joint between the sealing ring and the sealing groove. At the same time, the joint is converted into a joint between the connecting ring and the sealing seat, and then the water-swelling waterstop strip is used to complete the sealing of the joint between the connecting ring and the sealing seat, thereby completing the sealing of the entire pump casing.

[0014] Furthermore, a water inlet is provided on the top of the first shell, and a water inlet pipe is connected to the water inlet, and a first flange is installed on the top of the water inlet pipe.

[0015] Furthermore, a water outlet is provided on the side of the second shell, and a water outlet pipe is connected to the water outlet, and one end of the water outlet pipe is connected to a second flange.

[0016] Furthermore, a plurality of first protrusions and second protrusions are equidistantly installed on the sides of the first shell and the second shell, a through hole is opened at the center of each first protrusion, a threaded hole is opened at the center of each second protrusion, screws are slid inside the through holes, and the screws and the threaded holes are engaged and connected.

[0017] Furthermore, the outer sides of the first shell and the second shell are coated with an anti-rust coating.

[0018] The beneficial effect of adopting the above further scheme is that the water inlet pipe is used for water to enter, and the water outlet pipe is used for water to flow out. After the power parts are installed in the pump casing, the water flow can be pumped. At the same time, the first flange and the second flange are used to connect the pump casing to the external pipeline. At the same time, screws, through holes, and threaded holes are used to fix the first shell and the second shell together, so as to facilitate the user to disassemble the pump casing.

[0019] The beneficial effects of the utility model are as follows: the utility model obtains a highly sealed pump casing through the above-mentioned design, which can cover the joint between the first casing and the second casing by using a sealing seat and a sealing ring, and can cover the joint between the sealing seat and the sealing ring by using a sealing ring and a sealing groove, and finally, by using a water-swellable waterstop strip, after water passes through the pump casing, the water-swellable waterstop strip will expand, thereby fitting tightly with the connecting ring, and finally preventing water in the pump from flowing out from the joint between the sealing seat and the sealing ring. Therefore, when the sealing ring ages and causes its own elastic failure, the sealing of the pump casing can always be guaranteed to avoid leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the following is a brief introduction to the drawings required for use in the implementation mode. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the three-dimensional structure of a pump casing with high sealing performance provided by the utility model;

[0022] Figure 2 A schematic diagram of the explosion structure of a high-sealing pump casing provided by the utility model;

[0023] Figure 3 for Figure 2 A schematic diagram of the structure of structure A in the middle;

[0024] Figure 4 A bottom view schematic diagram of an explosion structure of a pump casing with high sealing performance provided by the utility model;

[0025] Figure 5 The utility model provides a schematic cross-sectional structure of a pump casing with high sealing performance.

[0026] In the figure: 100, pump casing body; 1001, first casing; 1002, second casing; 1003, water inlet pipe; 1004, first flange; 1005, water outlet pipe; 1006, second flange; 1007, screw; 1008, through hole; 1009, threaded hole; 200, sealing mechanism; 2001, sealing seat; 2002, water-swelling waterstop strip; 2003, connecting ring; 2004, sealing ring; 2005, rubber sealing ring; 2006, sealing groove. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0029] Embodiment 1 of a pump casing with high sealing performance according to the utility model

[0030] The utility model provides the following technical solutions: Figure 1-Figure 5, including a pump casing body 100 and a sealing mechanism 200, the pump casing body 100 includes a first shell 1001 and a second shell 1002, the first shell 1001 and the second shell 1002 are fixed to each other, the sealing mechanism 200 includes a sealing seat 2001 and a sealing ring 2004, and the sealing seat 2001 is installed on the bottom side of the inner wall of the first shell 1001, a sealing groove 2006 is opened at the bottom of the sealing seat 2001, a water-swelling waterstop strip 2002 is installed on the inner ring wall of the sealing seat 2001, a connecting ring 2003 is installed on the upper side of the inner wall of the second shell 1002, the sealing ring 2004 is installed on the top of the connecting ring 2003, the sealing ring 2004 and the sealing groove 2006 are engaged with each other, and the water-swelling waterstop strip 2002 covers the sealing ring 20 04 and the sealing groove 2006, the joint between the first shell 1001 and the second shell 1002 can be covered by using the sealing seat 2001 and the sealing ring 2004, and the joint between the sealing seat 2001 and the sealing ring 2004 can be covered by using the sealing ring 2004 and the sealing groove 2006. Finally, by using the water-swellable waterstop strip 2002, after water passes through the pump casing, the water-swellable waterstop strip 2002 will expand, thereby fitting tightly with the connecting ring 2003, and finally preventing the water in the pump from flowing out from the joint between the sealing seat 2001 and the sealing ring 2004. Therefore, when the sealing ring ages and causes its own elastic failure, the sealing of the pump casing can always be guaranteed to avoid leakage.

[0031] Embodiment 2 of a high-sealing pump casing of the utility model

[0032] Reference Figure 1-Figure 5 Specifically, the width of the connecting ring 2003 is greater than the width of the sealing ring 2004, and the distance between the outer edge of the connecting ring 2003 and the outer edge of the sealing ring 2004, and the distance between the inner edge of the connecting ring 2003 and the inner edge of the sealing ring 2004 is 3-6 mm. By limiting the sizes of the connecting ring 2003 and the sealing ring 2004, after the sealing ring 2004 enters the sealing groove 2006, the connecting ring 2003 can cover the joint between the sealing ring 2004 and the sealing groove 2006. When water flows through, it will not flow in from the joint between the sealing ring 2004 and the sealing groove 2006. At the same time, the joint is converted into the joint between the connecting ring 2003 and the sealing seat 2001, and then the water-swelling waterstop strip 2002 is used to complete the sealing of the joint between the connecting ring 2003 and the sealing seat 2001, so as to complete the sealing of the entire pump casing.

[0033] Embodiment 3 of a high-sealing pump casing of the utility model

[0034] Reference Figure 1-Figure 5Specifically, a water inlet is provided at the top of the first shell 1001, and a water inlet pipe 1003 is connected to the water inlet, a first flange 1004 is installed on the top of the water inlet pipe 1003, a water outlet is provided on the side of the second shell 1002, and a water outlet pipe 1005 is connected to the water outlet, and one end of the water outlet pipe 1005 is connected to a second flange 1006, and a plurality of first convex blocks and second convex blocks are installed at equal distances on the sides of the first shell 1001 and the second shell 1002, respectively, a through hole 1008 is provided at the center of each first convex block, a threaded hole 1009 is provided at the center of each second convex block, and the inner surface of the through hole 1008 is provided with a threaded hole 1009, and the inner surface of the through hole 1008 is provided with a threaded hole 1009, and the inner surface of the threaded hole 1009 ... There is a screw 1007, which is engaged with the threaded hole 1009. The outer sides of the first shell 1001 and the second shell 1002 are coated with an anti-rust coating. The water inlet pipe 1003 is used for water to enter, and the water outlet pipe 1005 is used for water to flow out. After the power parts are installed in the pump casing, the water flow can be pumped. At the same time, the first flange 1004 and the second flange 1006 are used to connect the pump casing to the external pipeline. At the same time, the screw 1007, the through hole 1008, and the threaded hole 1009 are used to fix the first shell 1001 and the second shell 1002 together, so as to facilitate the user to disassemble the pump casing.

[0035] Specifically, the working principle of this type of highly sealed pump casing is as follows: when in use, the first casing 1001 and the second casing 1002 are fitted together, the through hole 1008 and the threaded hole 1009 are aligned, and the screw 1007 is passed through the through hole 1008 and engaged with the threaded hole 1009 to complete the installation of the pump casing. By using the sealing seat 2001 and the sealing ring 2004, the joint between the first casing 1001 and the second casing 1002 can be covered. By using the sealing ring 2004 and the sealing groove 2006, the joint between the sealing seat 2001 and the sealing ring 2004 can be covered. Finally, by using the water-swellable waterstop strip 2002, after water passes through the pump casing, the water-swellable waterstop strip 2002 will expand, thereby fitting tightly with the connecting ring 2003, and ultimately preventing the water in the pump from flowing out from the joint between the sealing seat 2001 and the sealing ring 2004.

[0036] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A pump housing with high sealing performance, characterized in that: The invention comprises a pump casing body (100) and a sealing mechanism (200), wherein the pump casing body (100) comprises a first shell (1001) and a second shell (1002), wherein the first shell (1001) and the second shell (1002) are fixed to each other, and the sealing mechanism (200) comprises a sealing seat (2001) and a sealing ring (2004), wherein the sealing seat (2001) is installed on the bottom side of the inner wall of the first shell (1001), and the bottom of the sealing seat (2001) is provided with a sealing ring (2004). The sealing groove (2006) is provided with a water-swelling water stop strip (2002) on the inner wall of the sealing seat (2001), a connecting ring (2003) is provided on the upper side of the inner wall of the second shell (1002), the sealing ring (2004) is installed on the top of the connecting ring (2003), the sealing ring (2004) and the sealing groove (2006) are engaged with each other, and the water-swelling water stop strip (2002) covers the joint between the sealing ring (2004) and the sealing groove (2006).

2. A pump housing with high sealing performance according to claim 1, characterized in that: The water-swellable waterstop strip (2002) is annular, the bottom of the water-swellable waterstop strip (2002) exceeds the bottom of the sealing seat (2001), and the outer side of the water-swellable waterstop strip (2002) is adhered to the inner ring wall of the sealing seat (2001) by waterproof glue.

3. A pump housing with high sealing performance according to claim 1, characterized in that: The inner wall and the outer wall of the sealing ring (2004) are both installed with rubber sealing rings (2005), and the rubber sealing rings (2005) are pressed against the side walls of the sealing groove (2006).

4. A pump housing with high sealing performance according to claim 1, characterized in that: The width of the connecting ring (2003) is greater than the width of the sealing ring (2004), and the distance between the outer edge of the connecting ring (2003) and the outer edge of the sealing ring (2004), and the distance between the inner edge of the connecting ring (2003) and the inner edge of the sealing ring (2004) is 3-6 mm.

5. A pump housing with high sealing performance according to claim 1, characterized in that: A water inlet is provided at the top of the first shell (1001), and a water inlet pipe (1003) is connected to the water inlet. A first flange (1004) is installed at the top of the water inlet pipe (1003).

6. A pump housing with high sealing performance according to claim 5, characterized in that: A water outlet is provided on the side of the second shell (1002), and a water outlet pipe (1005) is connected to the water outlet, and one end of the water outlet pipe (1005) is connected to a second flange (1006).

7. A pump housing with high sealing performance according to claim 6, characterized in that: A plurality of first protrusions and second protrusions are equidistantly mounted on the sides of the first shell (1001) and the second shell (1002), a through hole (1008) is provided at the center of each first protrusion, a threaded hole (1009) is provided at the center of each second protrusion, a screw (1007) is slidably inserted into the inside of the through hole (1008), and the screw (1007) and the threaded hole (1009) are engaged and connected.

8. A pump housing with high sealing performance according to claim 7, characterized in that: The outer sides of the first shell (1001) and the second shell (1002) are both coated with an anti-rust coating.

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