Pump cover with check valve

Abstract

The utility model relates to the technical field of water pumps, and discloses a pump cover with a check valve, which comprises a cover body, a water inlet pipe, a water outlet pipe, a mounting pipe and the check valve, the water inlet pipe and the water outlet pipe are respectively communicated with the inside of the cover body, the mounting pipe is connected with the front end of the water outlet pipe, the rear end of the mounting pipe is provided with an end plate, and the front end of the end plate is provided with a communication hole and a fixing groove. The check valve comprises a shell and an elastic valve clack, the shell is installed in the installation pipe in a matched mode, the front end and the rear end of the shell are open, a limiting block is arranged on the inner side of the shell, and an installation block matched with the fixing groove is arranged at the rear end of the limiting block. The valve clack is arranged in the shell and can cover the communicating hole in an opening and closing mode, a mounting through groove matched with the mounting block is formed in the side portion of the valve clack, the front end of the valve clack abuts against the rear end of the limiting block, and the rear end of the valve clack abuts against the end plate. The check valve is simple and convenient to disassemble and assemble, and can be normally opened.

Description

Technical Field

[0001] The utility model relates to the technical field of water pumps, in particular to a pump cover with a check valve. Background Art

[0002] A water pump is a device used to move liquids. It increases the pressure of the liquid through mechanical, motor, or other energy sources to achieve liquid transportation. It is widely used in various occasions such as households, industry, and agriculture. The pump cover is an important component of the water pump. Its main function is to seal the internal working chamber of the pump and ensure the normal operation of the fluid in the pump. In order to facilitate connection, the pump cover is generally provided with an inlet pipe and an outlet pipe. In some use cases, the water pump has a certain head. In order to prevent water outside the outlet pipe from flowing back, a check valve is generally installed directly in the port of the outlet pipe. However, its installation structure is relatively complex and inconvenient to disassemble and assemble. Moreover, when the diameter of the pipe connected to the port of the outlet pipe is small, it may affect the normal opening of the check valve. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a pump cover with a check valve which is easy to assemble and disassemble and ensures that the check valve can be opened normally.

[0004] In order to solve the above technical problems, the utility model provides a pump cover with a check valve, comprising a cover body, a water inlet pipe, a water outlet pipe, a mounting pipe and a check valve, the water inlet pipe and the water outlet pipe being communicated with the interior of the cover body respectively, the mounting pipe being connected to the front end of the water outlet pipe, the rear end of the mounting pipe being provided with an end plate, the front end of the end plate being provided with a communicating hole and a fixing groove, the communicating hole being communicated with the interior of the water outlet pipe, the fixing groove being located on the outside of the communicating hole, the check valve comprising a shell and a valve disc with elasticity, the shell being matched and mounted in the mounting pipe, the shell having an opening at the front end and a rear end, a limiting block being provided on the inner side of the shell, a mounting block being provided at the rear end of the limiting block being matched with the fixing groove, the valve disc being mounted on the shell and being able to be opened and closed and covering the communicating hole, a mounting through groove being provided on the side of the valve disc being matched with the mounting block, the front end of the valve disc being abutted against the rear end of the limiting block, and the rear end of the valve disc being abutted against the end plate.

[0005] As a preferred solution of the present invention, a connecting portion is provided on the side of the valve flap, the mounting groove is provided on the connecting portion, and a snap block is provided inside the shell and is buckled on the rear end of the connecting portion.

[0006] As a preferred solution of the present invention, a connecting frame is provided in the outer shell, and the connecting frame includes a first connecting rod and a second connecting rod. The first connecting rod is arranged along the axial direction of the outer shell and is fixedly connected to the inner side of the outer shell. The rear end of the first connecting rod is connected to the front end of the limit block, the front end of the first connecting rod is connected to the middle part of the second connecting rod, and the two ends of the second connecting rod are respectively connected to the inner side of the outer shell.

[0007] As a preferred solution of the present invention, a boss embedded in the communicating hole is provided at the rear end of the valve flap, and the boss blocks the communicating hole.

[0008] As a preferred solution of the present invention, a fixing block is provided at the front end of the end plate, the fixing groove is provided at the front end of the fixing block, the front end of the communicating hole is provided with a convex ring arranged around the communicating hole, and the valve flap can be opened and closed and covered on the convex ring.

[0009] As a preferred solution of the present invention, an exhaust pipe is provided on the water inlet pipe, and the exhaust pipe is connected to the water inlet pipe.

[0010] As a preferred solution of the present invention, a mounting seat is provided on one side of the cover body, and the mounting seat is provided with a fixing hole.

[0011] As a preferred solution of the present invention, threads are respectively provided on the outer side of the end of the installation pipe and the outer side of the end of the water outlet pipe.

[0012] The embodiment of the present utility model provides a pump cover with a check valve. Compared with the prior art, its beneficial effects are as follows: the mounting block of the present utility model passes through the mounting through slot and is embedded in the fixing slot, and the limit block cooperates with the end plate to clamp the valve disc, thereby realizing the installation of the check valve. When disassembling, it is only necessary to pull the outer shell out from the mounting tube, which is simple to assemble and disassemble. When working, water is transported from the water inlet pipe to the pump cover, and then transported to the connecting hole through the water outlet pipe, thereby pushing the valve disc open, so that the check valve is in an open state, and water can be transported to the mounting tube. After stopping working, the valve disc returns to the state where the cover is set on the connecting hole under the action of elastic force, and the check valve returns to a closed state, thereby preventing backflow. The check valve is installed in the mounting tube, and there is sufficient space in the mounting tube for the valve disc to open and close normally, and it will not be affected by the pipeline connected to the front end of the mounting tube, thereby ensuring the normal use of the check valve. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0014] Figure 2 It is a cross-sectional view of the utility model;

[0015] Figure 3 It is a structural diagram of the installation pipe of the utility model;

[0016] Figure 4 This is a structural diagram of the valve disc of the utility model installed on the housing;

[0017] In the figure, 1. cover body; 2. water inlet pipe; 21. exhaust pipe; 3. water outlet pipe; 4. mounting pipe; 41. end plate; 411. communicating hole; 412. convex ring; 42. fixing groove; 43. fixing block; 5. check valve; 51. outer shell; 511. limiting block; 512. mounting block; 513. snap block; 52. valve disc; 521. mounting groove; 522. connecting part; 523. boss; 53. connecting frame; 531. first connecting rod; 532. second connecting rod; 6. mounting seat; 61. fixing hole. DETAILED DESCRIPTION

[0018] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like used in the present invention to indicate the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second" and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0020] like Figure 1-4As shown, a pump cover with a check valve in a preferred embodiment of the present invention includes a cover body 1, a water inlet pipe 2, a water outlet pipe 3, a mounting pipe 4 and a check valve 5. The water inlet pipe 2 and the water outlet pipe 3 are respectively communicated with the interior of the cover body 1, the mounting pipe 4 is connected to the front end of the water outlet pipe 3, and the rear end of the mounting pipe 4 is provided with an end plate 41. The front end of the end plate 41 is provided with a communicating hole 411 and a fixing groove 42. The communicating hole 411 is communicated with the interior of the water outlet pipe 3, and the fixing groove 42 is located on the outside of the communicating hole 411. The check valve 5 includes an outer shell 51 and a valve flap 52 with elasticity. For example, the valve flap 52 is made of rubber. The outer shell 51 is matched and mounted in the mounting pipe 4. The outer shell 51 is tubular, and the front and rear ends of the outer shell 51 are open. A limit block 511 is provided on the inner side of the outer shell 51. The limit block 511 is fixedly connected to the inner side of the shell 51. Generally, the limit block 511 is located at the inner rear end of the shell 51. The rear end of the limit block 511 is provided with a mounting block 512 that cooperates with the fixing groove 42. The valve flap 52 is installed on the shell 51 and can be opened and closed to cover the communicating hole 411. It can be understood that the internal space of the mounting tube 4 is sufficient for the valve flap 52 to open and close normally. The side of the valve flap 52 is provided with a mounting groove 521 that cooperates with the mounting block 512. The front end of the valve flap 52 is abutted against the rear end of the limit block 511, and the rear end of the valve flap 52 is abutted against the end plate 41, that is, the mounting block 512 passes through the mounting groove 521 and is embedded in the fixing groove 42. The limit block 511 cooperates with the end plate 41 to clamp the fixed valve flap 52 with the side of the mounting groove 521.

[0021] The working principle of this embodiment is as follows: during assembly, first pass the mounting block 512 through the mounting slot 521, so that the front end of the valve flap 52 is connected to the rear end of the limit block 511, then insert the housing 51 into the mounting tube 4, and embed the mounting block 512 into the fixing slot 42, so that the rear end of the valve flap 52 is against the end plate 41. At this time, the limit block 511 cooperates with the end plate 41 to clamp and fix the valve flap 52, completing the installation of the check valve 5. At this time, the valve flap 52 is covered on the communicating hole 411, and the check valve 5 is in a closed state; during operation, water is transported from the water inlet pipe 2 to the pump cover, and then transported to the communicating hole 411 through the water outlet pipe 3, thereby pushing the valve flap 52 open, so that the valve flap 52 no longer blocks the communicating hole 411, and the valve flap 52 is shaped The check valve 5 is installed in the mounting tube 4, and there is sufficient space in the mounting tube 4 for the valve disc 52 to open and close normally, and it will not be affected by the pipeline connected to the front end of the mounting tube 4, thereby ensuring the normal use of the check valve 5.

[0022] The cam 522 is fixed to the rear end of the mounting block 512 so that the front end of the mounting block 512 is against the rear end of the limit block 511 and the cam 523 is fixed to the rear end of the mounting block 512 so that the mounting block 512 is fixed to the rear end of the mounting block 512.

[0023] Exemplarily, a connecting frame 53 is provided in the outer shell 51, and the connecting frame 53 includes a first connecting rod 531 and a second connecting rod 532. The first connecting rod 531 is arranged along the axial direction of the outer shell 51 and is fixedly connected to the inner side of the outer shell 51. The rear end of the first connecting rod 531 is connected to the front end of the limit block 511, and the front end of the first connecting rod 531 is connected to the middle part of the second connecting rod 532. The two ends of the second connecting rod 532 are respectively connected to the inner side of the outer shell 51. The setting of the connecting frame 53 can improve the structural strength of the outer shell 51, and the setting of the second connecting rod 532 can facilitate the pulling out of the outer shell 51 from the mounting tube 4, thereby facilitating the disassembly of the check valve 5.

[0024] Illustratively, a boss 523 embedded in the connecting hole 411 is provided at the rear end of the valve flap 52 . The boss 523 blocks the connecting hole 411 to facilitate the positioning and installation of the valve flap 52 and ensure the sealing between the valve flap 52 and the connecting hole.

[0025] Illustratively, a raised fixing block 43 is provided at the front end of the end plate 41, a fixing groove 42 is provided at the front end of the fixing block 43, a convex ring 412 is provided at the front end of the communicating hole 411 and is arranged around the communicating hole 411, and the valve flap 52 can be opened and closed and covered on the convex ring 412, which helps to ensure the sealing of the check valve 5 when it is in a closed state.

[0026] Exemplarily, an exhaust pipe 21 is provided on the water inlet pipe 2, and the exhaust pipe 21 is connected to the water inlet pipe 2. The exhaust pipe 21 can discharge the air in the pump cover to prevent poor drainage due to the presence of air.

[0027] Illustratively, a mounting seat 6 is provided on one side of the cover body 1, and the mounting seat 6 is fixedly connected to the cover body 1. The mounting seat 6 is provided with a fixing hole 61, and the fixing hole 61 is used to connect with a connecting member (such as a bolt) to fix the mounting seat 6 to achieve the fixation of the pump cover.

[0028] Exemplarily, threads are provided on the outer sides of the ends of the installation pipe 4 and the outlet pipe 3, respectively, to facilitate connection of the installation pipe 4 and the outlet pipe 3 with other pipes.

[0029] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.

Claims

1. A pump cover with a check valve, characterized in that: The closure of the water pipe is connected to the front end of the water pipe, and the rear end of the water pipe is connected to the closure of the water pipe. The closure of the water pipe is connected to the front end of the water pipe, and the rear end of the water pipe is connected to the closure of the water pipe.

2. The pump cover with a check valve according to claim 1, characterized in that: A connecting portion is provided on the side of the valve flap, the mounting through groove is provided on the connecting portion, and a buckle block is provided inside the shell and buckled on the rear end of the connecting portion.

3. The pump cover with a check valve according to claim 1, characterized in that: A connecting frame is provided in the outer shell, and the connecting frame includes a first connecting rod and a second connecting rod. The first connecting rod is arranged along the axial direction of the outer shell and is fixedly connected to the inner side of the outer shell. The rear end of the first connecting rod is connected to the front end of the limit block, the front end of the first connecting rod is connected to the middle part of the second connecting rod, and the two ends of the second connecting rod are respectively connected to the inner side of the outer shell.

4. The pump cover with a check valve according to claim 1, characterized in that: A boss is provided at the rear end of the valve flap and embedded in the communicating hole, and the boss blocks the communicating hole.

5. The pump cover with a check valve according to claim 1, characterized in that: A fixing block is provided at the front end of the end plate, the fixing groove is provided at the front end of the fixing block, a convex ring is provided at the front end of the communicating hole surrounding the communicating hole, and the valve flap is covered on the convex ring in an openable and closable manner.

6. The pump cover with a check valve according to claim 1, characterized in that: An exhaust pipe is provided on the water inlet pipe, and the exhaust pipe is communicated with the water inlet pipe.

7. The pump cover with a check valve according to claim 1, characterized in that: A mounting seat is provided on one side of the cover body, and the mounting seat is provided with a fixing hole.

8. The pump cover with a check valve according to claim 1, characterized in that: The outer side of the end of the installation pipe and the outer side of the end of the water outlet pipe are respectively provided with threads.

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