Connecting and sealing structure of water outlet of water pump

Abstract

The utility model relates to the technical field of water pumps, in particular to a connecting and sealing structure of a water outlet of a water pump, which comprises an inner threaded pipe and an outer threaded pipe, the inner threaded pipe is in threaded connection with the inner side of the outer threaded pipe, and one end of the outer threaded pipe is provided with a slot; the inner sealing mechanism can automatically seal a gap between the inner threaded pipe and the outer threaded pipe after the outer threaded pipe is connected in place, so that the purpose of preventing passing water from leaking to the outside along the gap between the inner threaded pipe and the outer threaded pipe is achieved, and meanwhile the inner sealing mechanism is expanded through the pressure of the passing water. And the expansion degree of the inner sealing mechanism can be synchronously increased and decreased along with the water pressure, so that the blocking strength of the gap between the inner threaded pipe and the outer threaded pipe is further improved, and the probability that water leaks to the outside along the gap between the inner threaded pipe and the outer threaded pipe is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of water pumps, in particular to a connection sealing structure of a water pump outlet. Background Art

[0002] A water pump is a machine for conveying liquid or pressurizing liquid. The water outlet of a current water pump is generally connected to a pipeline through a fastening valve and screws. However, the existing fastening valve is not easy to install and disassemble, and the internal water flow will cause wear to the inner wall when it flows out under pressure for a long time, resulting in water leakage.

[0003] At present, a Chinese patent discloses a pipe connection mechanism for a water pump outlet (authorization announcement number is CN211599805U). The connection between the connecting pipe and the water outlet pipe is connected by an embedded thread, which can effectively reduce the wear of the connecting pipe by water flow impact, and the first protective pipe and the second protective pipe can well protect the connection between the water outlet pipe and the connecting pipe. The threaded connection between the water outlet pipe and the first threaded pipe enables the filter net on one side of the first threaded pipe to perform tighter filtering and have a better filtering function.

[0004] Since the above device only connects the water pump outlet and the pipe by means of a threaded connection, and no other sealing structure is provided, when the water pressure passing through this place is high, water can easily leak to the outside through the gap at the threaded connection, and the problem of water leakage still exists.

[0005] Therefore, a connection sealing structure of a water pump outlet is proposed to solve the above problem. Utility Model Content

[0006] The utility model achieves the above-mentioned purpose through the following technical scheme, a connection sealing structure of a water pump outlet, comprising: an internal threaded pipe and an external threaded pipe, the internal threaded pipe is threadedly connected to the inner side of the external threaded pipe, and one end of the external threaded pipe is provided with a slot; an internal sealing mechanism, the internal sealing mechanism is fixedly connected to the inside of the internal threaded pipe, and one end of the internal sealing mechanism is plugged into the slot.

[0007] Preferably, the inner sealing mechanism includes an annular sleeve fixedly connected to the inside of the internal threaded tube, one end of the annular sleeve is provided with an annular groove connected to the slot, the inside of the annular groove is fixedly connected with an annular elastic capsule, one end of the annular elastic capsule penetrates into the inside of the slot, and the annular elastic capsule is in an expanded state at this time.

[0008] Preferably, the cross-sectional shape of one end of the ring-shaped elastic capsule is an arc shape, and the thickness of the ring-shaped elastic capsule matches the thickness of the slot.

[0009] Preferably, a water guiding slope facing away from the external threaded pipe is provided on the inner side of the collar.

[0010] Preferably, water guiding ports which are uniformly distributed and communicated with the annular groove are provided on the inner side of the collar, and the water guiding ports are arranged on the inner side of the annular elastic capsule.

[0011] Preferably, a resistance increasing groove communicated with the slot is provided inside the external threaded pipe, and the annular elastic capsule is perpendicular to the resistance increasing groove.

[0012] Preferably, the inside of the annular elastic capsule is filled with hydraulic oil.

[0013] Preferably, a filter screen is embedded in the water guiding port, and the filter screen is a component made of stainless steel material.

[0014] Preferably, an external sealing mechanism contacting with the internal threaded pipe is fixedly connected to the surface of the external threaded pipe. The external sealing mechanism includes a fixing ring fixedly connected to the surface of the external threaded pipe. One end of the fixing ring is fixedly connected with a rubber sealing sleeve contacting with the internal threaded pipe. The rubber sealing sleeve is sleeved on the surface of the external threaded pipe, and the rubber sealing sleeve is in a compressed state at this time.

[0015] The beneficial effects of the present utility model are as follows:

[0016] The internal sealing mechanism can automatically seal the gap between the internal threaded pipe and the external threaded pipe after the external threaded pipe is connected in place, so as to prevent the water passing through from leaking to the outside along the gap between the internal threaded pipe and the external threaded pipe. Meanwhile, the pressure of the passing water is used to expand the internal sealing mechanism, and the expansion degree of the internal sealing mechanism can also increase or decrease synchronously with the water pressure, which further improves the sealing strength of the gap between the internal threaded pipe and the external threaded pipe and further reduces the probability of water leaking to the outside along the gap between the internal threaded pipe and the external threaded pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the water pump outlet connection sealing structure of the present utility model;

[0018] Figure 2 is a connection schematic diagram of the pipeline, the water pump and the water pump outlet connection sealing structure of the present utility model;

[0019] Figure 3 is a sectional schematic diagram of the water pump outlet connection sealing structure of the present utility model;

[0020] Figure 4 is an exploded schematic diagram of the internal sealing mechanism of the present utility model.

[0021] In the figure: 1. Internal threaded pipe; 2. External threaded pipe; 21. Slot; 22. Resistance increasing groove; 3. Internal sealing mechanism; 31. Ring sleeve; 311. Ring groove; 312. Water guiding port; 32. Ring-shaped elastic capsule; 33. Hydraulic oil; 34. Filter screen; 4. External sealing mechanism; 41. Fixed ring; 42. Rubber sealing sleeve. Specific implementation mode

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0023] During specific implementation: As Figures 1-4 shown, a connection and sealing structure for the water outlet of a water pump includes: an internal threaded pipe 1 and an external threaded pipe 2. The internal threaded pipe 1 is threadedly connected to the inner side of the external threaded pipe 2. One end of the external threaded pipe 2 is provided with a slot 21; an internal sealing mechanism 3, the internal sealing mechanism 3 is fixedly connected to the inside of the internal threaded pipe 1, and one end of the internal sealing mechanism 3 is inserted into the slot 21;

[0024] Workers need to fix and connect the internal threaded pipe 1 and the external threaded pipe 2 to the water outlet of the water pump and the water inlet of the pipeline respectively in advance. When the workers need to connect the water outlet of the water pump to the water inlet of the pipeline, the workers only need to align the external threaded pipe 2 with the internal threaded pipe 1, and then screw the external threaded pipe 2 deeply into the internal threaded pipe 1. When the external threaded pipe 2 is installed in place, at this time, the water outlet of the water pump and the water inlet of the pipeline are stably connected together through the cooperation of the internal threaded pipe 1 and the external threaded pipe 2, and the water pump can pump the sucked water into the pipeline through the internal threaded pipe 1 and the external threaded pipe 2.

[0025] As Figure 3 and Figure 4 shown, the internal sealing mechanism 3 includes a ring sleeve 31 fixedly connected to the inside of the internal threaded pipe 1. One end of the ring sleeve 31 is provided with a ring groove 311 communicating with the slot 21. The inside of the ring groove 311 is fixedly connected with a ring-shaped elastic capsule 32. One end of the ring-shaped elastic capsule 32 penetrates into the inside of the slot 21, and the ring-shaped elastic capsule 32 is in an expanded state at this time;

[0026] During the process of the external thread tube 2 spirally penetrating into the internal thread tube 1, the external thread tube 2 drives the slot 21 to penetrate into the internal thread tube 1 synchronously. At this time, the annular elastic capsule 32 moves relative to the slot 21. When the annular elastic capsule 32 penetrates into the interior of the slot 21, the gap between the internal thread tube 1 and the external thread tube 2 is blocked by the annular elastic capsule 32 until the external thread tube 2 is tightly connected to the collar 31. This can seal the gap between the internal thread tube 1 and the external thread tube 2, effectively reducing the probability of water leaking outward along the gap between the internal thread tube 1 and the external thread tube 2.

[0027] The cross-sectional shape of one end of the annular elastic capsule 32 is arc-shaped, and the thickness of the annular elastic capsule 32 matches the thickness of the slot 21. This can reduce the resistance of the annular elastic capsule 32 to penetrate into the interior of the slot 21 to ensure that the annular elastic capsule 32 can effectively block the gap between the internal thread tube 1 and the external thread tube 2; a water guiding slope facing away from the external thread tube 2 is provided on the inner side of the collar 31, which can reduce the blockage of the passing water flow, so as to reduce the resistance of the water flow passing between the internal thread tube 1 and the external thread tube 2 and reduce the probability of leakage due to excessive water pressure; a water guiding port 312 that is evenly distributed and communicates with the annular groove 311 is provided on the inner side of the collar 31. The water guiding port 312 is arranged on the inner side of the annular elastic capsule 32. During the process of the water flow passing through the inner side of the collar 31, the water can squeeze the annular elastic capsule 32 through the water guiding port 312, and the annular elastic capsule 32 expands accordingly and increases the pressure on the interior of the slot 21. This can improve the sealing strength of the gap between the collar 31 and the external thread tube 2, and this sealing strength also increases and decreases synchronously with the water pressure of the passing water; a resistance increasing groove 22 communicating with the slot 21 is provided inside the external thread tube 2, and the annular elastic capsule 32 is perpendicular to the resistance increasing groove 22. This can cause the annular elastic capsule 32 to expand into the resistance increasing groove 22, which can increase the resistance of the annular elastic capsule 32 to move outward from the slot 21, further improving the sealing effect of the gap between the collar 31 and the external thread tube 2; hydraulic oil 33 is filled inside the annular elastic capsule 32, which can make the annular elastic capsule 32 more rigid to improve the blocking effect on the passing water flow; a filter screen 34 is embedded and installed inside the water guiding port 312. The filter screen 34 is a stainless steel component, which can prevent impurities in the passing water from entering the water guiding port 312 to reduce the influence on the normal expansion and contraction of the annular elastic capsule 32.

[0028] As Figure 3 shown, an external sealing mechanism 4 in contact with the internal thread tube 1 is fixedly connected to the surface of the external thread tube 2. The external sealing mechanism 4 includes a fixing ring 41 fixedly connected to the surface of the external thread tube 2. One end of the fixing ring 41 is fixedly connected with a rubber sealing sleeve 42 in contact with the internal thread tube 1. The rubber sealing sleeve 42 is sleeved on the surface of the external thread tube 2, and the rubber sealing sleeve 42 is in a compressed state at this time;

[0029] During the process of the external thread tube 2 spirally penetrating into the internal thread tube 1, the external thread tube 2 drives the fixing ring 41 to spiral close to the internal thread tube 1, and the fixing ring 41 drives the rubber sealing sleeve 42 to spiral close to the internal thread tube 1. And before the external thread tube 2 abuts against the collar 31, the rubber sealing sleeve 42 can first abut against the internal thread tube 1, which can seal the gap between the internal thread tube 1 and the external thread tube 2, and can prevent external dust and other impurities from falling into the gap between the internal thread tube 1 and the external thread tube 2, so as to reduce the resistance for the staff to rotate the external thread tube 2, and further reduce the difficulty for the staff to connect or disassemble the water pump and the pipeline.

[0030] It should be noted that the specific model and specification of the water pump need to be selected and determined according to the actual specification of the device, etc. The specific selection calculation method adopts the existing technology in the field, so it will not be elaborated in detail. The power supply and principle of the water pump are clear to those skilled in the art, so they will not be described in detail here.

[0031] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A connection sealing structure for a water pump outlet, characterized in that: include: An internally threaded tube (1) and an externally threaded tube (2), wherein the internally threaded tube (1) is threadably connected to the inner side of the externally threaded tube (2), and a slot (21) is provided at one end of the externally threaded tube (2); An inner sealing mechanism (3), the inner sealing mechanism (3) being fixedly connected to the interior of the internally threaded tube (1), and one end of the inner sealing mechanism (3) being plugged into the slot (21); The inner sealing mechanism (3) comprises an annular sleeve (31) fixedly connected to the interior of the internal threaded tube (1); one end of the annular sleeve (31) is provided with an annular groove (311) communicating with the slot (21); an annular elastic capsule (32) is fixedly connected to the interior of the annular groove (311); one end of the annular elastic capsule (32) penetrates into the interior of the slot (21); and the annular elastic capsule (32) is in an expanded state at this time.

2. A connection sealing structure for a water pump outlet according to claim 1, characterized in that: The cross-sectional shape of one end of the ring-shaped elastic capsule (32) is an arc shape, and the thickness of the ring-shaped elastic capsule (32) matches the thickness of the slot (21).

3. The connection sealing structure of a water pump outlet according to claim 1, characterized in that: The inner side of the ring sleeve (31) is provided with a water guide slope facing away from the external threaded pipe (2).

4. The connection sealing structure of a water pump outlet according to claim 1, characterized in that: The inner side of the ring sleeve (31) is provided with water guide ports (312) which are evenly distributed and communicate with the ring groove (311); the water guide ports (312) are arranged on the inner side of the ring-shaped elastic capsule (32).

5. The connection sealing structure of a water pump outlet according to claim 1, characterized in that: A resistance increasing groove (22) communicating with the slot (21) is provided inside the externally threaded tube (2), and the annular elastic capsule (32) is perpendicular to the resistance increasing groove (22).

6. The connection sealing structure of a water pump outlet according to claim 1, characterized in that: The annular elastic capsule (32) is filled with hydraulic oil (33).

7. A connection sealing structure for a water pump outlet according to claim 4, characterized in that: A filter screen (34) is embedded and installed inside the water guide port (312); the filter screen (34) is a stainless steel material component.

8. The connection sealing structure of a water pump outlet according to claim 1, characterized in that: The surface of the externally threaded tube (2) is fixedly connected to an external sealing mechanism (4) in contact with the internally threaded tube (1); the external sealing mechanism (4) comprises a fixing ring (41) fixedly connected to the surface of the externally threaded tube (2); one end of the fixing ring (41) is fixedly connected to a rubber sealing sleeve (42) in contact with the internally threaded tube (1); the rubber sealing sleeve (42) is sleeved on the surface of the externally threaded tube (2); the rubber sealing sleeve (42) is in a compressed state at this time.

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