Simple check valve for preventing self-priming pump from not increasing

Abstract

The utility model relates to valve technical field, specifically disclose a prevent simple check valve of automatic control self priming pump not on quantity, include: valve body, the valve body top and bottom are all fixedly arranged with the connecting flange plate, the valve body inboard wall is fixedly arranged with the mounting seat, the mounting seat top and bottom are all respectively seted up to install the groove and inlet, the inside of install the groove is connected with the valve seat through the connecting mechanism, the valve seat outboard wall is seted up to have the water pass through the mouth, the valve seat top is equipped with the mounting plate, the mounting plate below is equipped with the open and close subassembly, the utility model discloses through the setting use of adjusting assembly, drives two -way screw rod to drive the transverse movement of moving block, utilizes the extrusion of extrusion block and connects the block to separate the connecting groove, realizes the quick separation of valve seat and mounting seat, need not to complete the disassembly by the special tool, significantly simplifies maintenance process, the cooperation design of connecting block and first spring in connecting mechanism makes valve seat when installing through arc end portion automatic card into connecting groove.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, specifically relating to a simple check valve to prevent a self-priming pump from failing to deliver a flow rate. Background Technology

[0002] A self-priming pump is a fluid transport device that is automatically controlled and has a strong self-priming capability. Its core features lie in its unique automatic control system and powerful self-priming function. No additional priming water or filling medium is required before startup; it can automatically draw in liquid and begin normal operation after a short period of operation. A check valve is a valve that automatically opens and closes its valve disc based on the flow of the medium itself to prevent backflow. Also known as a non-return valve, one-way valve, backflow valve, and back pressure valve, it is an automatic valve whose main functions are to prevent backflow of the medium, prevent the pump and drive motor from reversing, and prevent the release of medium from the container.

[0003] When a self-priming pump starts, it can automatically expel air and create negative pressure to draw water. However, if the liquid flows back after the pump stops, it may take a long time to draw water when restarting, or it may not be able to draw water at all. In this case, the function of the check valve is to prevent the liquid from flowing back and keep the pump body and the suction pipe full of liquid, thereby avoiding the need to vent air again every time the pump is started.

[0004] Existing check valves require periodic disassembly and maintenance of their internal components. Check valves (especially spring-assisted and multi-stage valves) often employ a compact design with tightly nested internal components (valve disc, spring, and sealing rings), necessitating disassembly in a specific order. Furthermore, disassembly requires specialized tools (such as spring compressors), making the process complex and impacting usability. Utility Model Content

[0005] The purpose of this utility model is to provide a simple check valve to prevent a self-priming pump from failing to deliver a flow rate, which facilitates the disassembly and assembly of internal components of the valve body, making operation more convenient and easy to maintain and use.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A simple check valve for preventing a self-priming pump from failing to deliver water includes: a valve body, with connecting flanges fixedly installed at the top and bottom of the valve body; a mounting seat fixedly installed on the inner wall of the valve body; a mounting groove and a water inlet respectively opened at the top and bottom of the mounting seat; a valve seat connected to the mounting groove through a connecting mechanism; a water outlet opened on the outer wall of the valve seat; a mounting plate provided above the valve seat; and an opening and closing assembly provided below the mounting plate.

[0008] The connecting mechanism includes two movable grooves formed on the outer wall of the valve seat, a connecting block slidably disposed on the inner wall of the movable groove, a first spring fixedly disposed between the connecting block and the inner wall of the movable groove, a plurality of connecting grooves adapted to the connecting block being formed on the inner wall of the mounting groove, the connecting block being inserted into the connecting groove, and an extrusion assembly being provided inside the mounting seat.

[0009] Preferably, the extrusion assembly includes two extrusion grooves starting inside the mounting base, the two extrusion grooves being connected to two corresponding connecting grooves respectively, extrusion blocks being slidably disposed on the inner sidewalls of the extrusion grooves, and an adjustment assembly being provided at the bottom of the mounting base.

[0010] Preferably, the adjustment assembly includes an adjustment block fixedly disposed on the outer side wall of the extrusion block, the bottom of the adjustment block passing through the mounting base and fixedly connected to a movable block, the bottom of the mounting base having a movable opening adapted to the adjustment block, and the outer side wall of the adjustment block and the inner side wall of the movable opening being slidably connected.

[0011] Preferably, a rotating block is provided on the outside of the valve body, and a bidirectional lead screw is fixedly provided on the outer wall of the rotating block. The end of the bidirectional lead screw passes through the valve body and two moving blocks and is rotatably connected to the inner wall of the valve body. The bidirectional lead screw and the two moving blocks are connected by threads.

[0012] Preferably, the outer wall of the connecting block away from the first spring is arc-shaped, a sealing gasket is provided between the mounting base and the valve seat, the sealing gasket is fixedly installed on the outer wall of the valve seat, and the outer wall of the valve body has a through-hole adapted to the bidirectional lead screw, and multiple sealing rings are provided inside the through-hole.

[0013] Preferably, the opening and closing assembly includes a fixed base fixedly disposed at the bottom of the mounting plate, the fixed base being connected to a baffle via an elastic component, the bottom of the baffle being inserted into the water inlet, and the mounting plate and the valve seat being fixedly connected by a fixing rod.

[0014] Preferably, the elastic component includes a plurality of mounting cavities starting at the bottom of the fixed base, a connecting rod slidably disposed on the inner sidewall of the mounting cavity, the bottom of the connecting rod passing through the mounting cavity and fixedly connected to the top of the baffle, and a second spring fixedly disposed between the connecting rod and the top of the mounting cavity.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] By adjusting the settings of the components, the bidirectional lead screw drives the moving block to move laterally. The squeezing block presses the connecting block to separate it from the connecting groove, achieving rapid separation of the valve seat and the mounting seat. Disassembly can be completed without the need for special tools, significantly simplifying the maintenance process. The design of the connecting block and the first spring in the connecting mechanism allows the valve seat to automatically snap into the connecting groove through the arc end during installation, making installation and operation convenient and easy to use. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present utility model;

[0018] Figure 2 This is a cross-sectional view of the valve body in this utility model;

[0019] Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle;

[0020] Figure 4 for Figure 2 Enlarged view of the structure at point B in the middle;

[0021] In the diagram: 1. Valve body; 2. Connecting flange; 3. Mounting base; 4. Valve seat; 5. Mounting plate; 6. Connecting block; 7. First spring; 8. Extrusion block; 9. Adjusting block; 10. Moving block; 11. Rotating block; 12. Double-acting screw; 13. Sealing gasket; 14. Fixed base; 15. Connecting rod; 16. Baffle; 17. Second spring; 18. Fixed rod. Detailed Implementation

[0022] 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.

[0023] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0024] Example 1:

[0025] Please see Figures 1-4 As shown, a simple check valve for preventing a self-priming pump from not pumping water includes: a valve body 1, with connecting flanges 2 fixedly installed at the top and bottom of the valve body 1, a mounting base 3 fixedly installed on the inner wall of the valve body 1, a mounting groove and a water inlet respectively opened at the top and bottom of the mounting base 3, a valve seat 4 connected to the inside of the mounting groove through a connecting mechanism, a water outlet opened on the outer wall of the valve seat 4, a mounting plate 5 above the valve seat 4, and an opening and closing assembly below the mounting plate 5;

[0026] The connecting mechanism includes two movable grooves on the outer side wall of the valve seat 4. A connecting block 6 is slidably arranged on the inner side wall of the movable groove. A first spring 7 is fixedly arranged between the connecting block 6 and the inner side wall of the movable groove. Multiple connecting grooves adapted to the connecting block 6 are opened on the inner side wall of the mounting groove. The connecting block 6 is inserted into the connecting groove. An extrusion assembly is provided inside the mounting base 3.

[0027] As can be seen from the above, the valve seat 4 is quickly fixed by the snap-fit ​​between the connecting block 6 and the mounting seat 3. When the connecting block 6 is installed, it is subjected to the elastic pressure of the first spring 7. After its arc-shaped end contacts the connecting groove, it automatically slides in and locks, ensuring that the valve seat 4 and the mounting seat 3 fit tightly. By using the extrusion component, it is easy to control the connecting block 6 to disengage from the connecting groove, thereby facilitating the direct disassembly and separation of the valve seat 4 and the mounting seat 3.

[0028] The valve body 1 is fixedly installed to the outlet end of the self-priming pump via the bottom connecting flange 2. The valve body 1 is connected and fixed to the outlet pipe via the top connecting flange 2. The valve body 1 can be automatically opened and closed by the setting of the opening and closing component.

[0029] Specifically, regarding the aforementioned extrusion components, please refer to... Figure 2 and Figure 3As shown, the extrusion assembly includes two extrusion grooves starting inside the mounting base 3. The two extrusion grooves are respectively connected to two corresponding connecting grooves. An extrusion block 8 is slidably disposed on the inner side wall of the extrusion groove. An adjustment assembly is provided at the bottom of the mounting base 3.

[0030] As can be seen from the above, by adjusting the component, the two extrusion blocks 8 can be moved in opposite or opposite directions, so that the connecting block 6 can be pushed out of the connecting groove through the extrusion block 8, which facilitates the disassembly between the valve seat 4 and the mounting seat 3.

[0031] Specifically, regarding the aforementioned adjustment components, please refer to... Figure 1 , Figure 2 and Figure 3 As shown, the adjustment assembly includes an adjustment block 9 fixedly mounted on the outer wall of the extrusion block 8. The bottom of the adjustment block 9 passes through the mounting base 3 and is fixedly connected to a moving block 10. The bottom of the mounting base 3 has a moving opening adapted to the adjustment block 9. The outer wall of the adjustment block 9 and the inner wall of the moving opening are slidably connected.

[0032] A rotating block 11 is provided on the outside of the valve body 1. A bidirectional screw 12 is fixedly provided on the outer wall of the rotating block 11. The end of the bidirectional screw 12 passes through the valve body 1 and two moving blocks 10 and is rotatably connected to the inner wall of the valve body 1. A threaded connection is provided between the bidirectional screw 12 and the two moving blocks 10.

[0033] The outer wall of the connecting block 6 away from the first spring 7 is arc-shaped. A sealing gasket 13 is provided between the mounting base 3 and the valve seat 4. The sealing gasket 13 is fixedly installed on the outer wall of the valve seat 4. The outer wall of the valve body 1 has a through-hole adapted to the bidirectional screw 12. Multiple sealing rings are provided inside the through-hole.

[0034] As can be seen from the above, when the valve seat 4 needs to be disassembled, the external rotating block 11 drives the bidirectional screw 12 to rotate, which drives the moving block 10 to move laterally, pushing the adjusting block 9 and the squeezing block 8 to press the connecting block 6 inward, so that it is separated from the connecting groove. This process does not require the use of special tools. The valve seat 4 can be quickly separated by simply rotating the bidirectional screw 12, which significantly simplifies the maintenance process.

[0035] Example 2:

[0036] refer to Figure 2 and Figure 4 As shown, the opening and closing assembly includes a fixed base 14 fixedly installed at the bottom of the mounting plate 5. The fixed base 14 is connected to a baffle 16 through an elastic component. The bottom of the baffle 16 is inserted into the water inlet. The mounting plate 5 and the valve seat 4 are fixedly connected by a fixing rod 18.

[0037] As can be seen from the above, the fixing rod 18 ensures the stable connection between the mounting plate 5 and the valve seat 4, and prevents the baffle 16 from shifting due to water flow impact. The baffle 16 achieves automatic opening and closing function through the elastic component. When the self-priming pump is running, the water flow pressure pushes the baffle 16 to move upward, the water inlet opens, and the liquid flows normally. When the pump stops, the elastic component presses down on the baffle 16 to close the water inlet, effectively preventing liquid backflow.

[0038] Preferably, the elastic component includes a plurality of mounting cavities starting at the bottom of the fixed base 14, a connecting rod 15 is slidably disposed on the inner sidewall of the mounting cavity, the bottom of the connecting rod 15 passes through the mounting cavity and is fixedly connected to the top of the baffle 16, and a second spring 17 is fixedly disposed between the connecting rod 15 and the top of the mounting cavity.

[0039] As can be seen from the above, when the self-priming pump is running, the baffle 16 moves upward and compresses the second spring 17, so that the second spring 17 is in a compressed state. This makes it easier for the elastic restoring force of the second spring 17 to drive the connecting rod 15 to press down the baffle 16 when the self-priming pump stops, so that it closes the water inlet.

[0040] 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 simple check valve to prevent a self-priming pump from failing to deliver output, characterized in that, include: A valve body (1) is provided with a connecting flange (2) fixedly installed at the top and bottom of the valve body (1). A mounting seat (3) is fixedly installed on the inner side wall of the valve body (1). A mounting groove and a water inlet are respectively opened at the top and bottom of the mounting seat (3). A valve seat (4) is connected inside the mounting groove through a connecting mechanism. A water inlet is opened on the outer side wall of the valve seat (4). A mounting plate (5) is provided above the valve seat (4). An opening and closing assembly is provided below the mounting plate (5). The connecting mechanism includes two movable grooves opened on the outer side wall of the valve seat (4), a connecting block (6) is slidably arranged on the inner side wall of the movable groove, a first spring (7) is fixedly arranged between the connecting block (6) and the inner side wall of the movable groove, a plurality of connecting grooves adapted to the connecting block (6) are opened on the inner side wall of the mounting groove, the connecting block (6) is inserted into the connecting groove, and an extrusion assembly is provided inside the mounting seat (3).

2. A simple check valve for preventing a self-priming pump from failing to deliver water according to claim 1, characterized in that: The extrusion assembly includes two extrusion grooves starting inside the mounting base (3), the two extrusion grooves being connected to two corresponding connecting grooves respectively, and an extrusion block (8) being slidably disposed on the inner sidewall of the extrusion groove. An adjustment assembly is provided at the bottom of the mounting base (3).

3. A simple check valve for preventing a self-priming pump from failing to deliver water according to claim 2, characterized in that: The adjustment assembly includes an adjustment block (9) fixedly mounted on the outer wall of the extrusion block (8). The bottom of the adjustment block (9) passes through the mounting base (3) and is fixedly connected to a moving block (10). The bottom of the mounting base (3) has a moving opening adapted to the adjustment block (9). The outer wall of the adjustment block (9) and the inner wall of the moving opening are slidably connected.

4. A simple check valve for preventing a self-priming pump from failing to deliver water according to claim 3, characterized in that: The valve body (1) is provided with a rotating block (11) on the outside. A bidirectional screw (12) is fixedly provided on the outer wall of the rotating block (11). The end of the bidirectional screw (12) passes through the valve body (1) and two moving blocks (10) and is rotatably connected to the inner wall of the valve body (1). The bidirectional screw (12) and the two moving blocks (10) are connected by threads.

5. A simple check valve for preventing a self-priming pump from failing to deliver water according to claim 4, characterized in that: The outer wall of the connecting block (6) away from the first spring (7) is arc-shaped. A sealing gasket (13) is provided between the mounting seat (3) and the valve seat (4). The sealing gasket (13) is fixedly installed on the outer wall of the valve seat (4). The outer wall of the valve body (1) is provided with a through-hole that is compatible with the bidirectional screw (12). Multiple sealing rings are provided inside the through-hole.

6. A simple check valve for preventing a self-priming pump from failing to deliver water according to claim 1, characterized in that: The opening and closing assembly includes a fixed seat (14) fixedly installed at the bottom of the mounting plate (5). The fixed seat (14) is connected to a baffle (16) through an elastic component. The bottom of the baffle (16) is inserted into the water inlet. The mounting plate (5) and the valve seat (4) are fixedly connected by a fixing rod (18).

7. A simple check valve for preventing a self-priming pump from failing to deliver water according to claim 6, characterized in that: The elastic component includes a plurality of mounting cavities starting at the bottom of the fixed base (14), a connecting rod (15) is slidably disposed on the inner sidewall of the mounting cavity, the bottom of the connecting rod (15) passes through the mounting cavity and is fixedly connected to the top of the baffle (16), and a second spring (17) is fixedly disposed between the connecting rod (15) and the top of the mounting cavity.

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