Jet flow self-absorption rapid cutting device

Abstract

The utility model relates to the technical field of self-priming pump automatic cut-off devices, in particular to a jet flow self-priming rapid cut-off device which comprises a cut-off valve body, a valve seat, a valve plate and a mechanical control module. The stop valve body is arranged at the position of a water inlet pipe of a Venturi jet device of the self-priming pump, located in an inner cavity of a self-priming tank body of the self-priming pump and used for controlling connection and disconnection of the water inlet pipe. The valve seat is fixedly arranged in the self-suction tank body, and the valve seat is matched with the stop valve body in position; the valve plate is arranged on the valve seat in a sliding mode, the valve plate is matched with the stop valve body in position, and when the valve seat cuts off the water inlet pipe, the valve plate is inserted into an inner cavity of the stop valve and used for controlling on-off of the water inlet pipe. And the mechanical control module is arranged in an inner cavity of the self-suction tank body, is connected with the valve seat, is connected with the valve plate and is used for driving the valve plate to be inserted into the stop valve body. The device overcomes the defect of high maintenance cost in the prior art, and has the characteristic of long service life.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic cut-off devices for self-priming pumps, and particularly relates to a jet self-priming rapid cut-off device. Background Art

[0002] In the prior art, there are various self-priming schemes for a self-priming pump to suck the gas at the pump inlet. One of them is to set a Venturi injector at the pump inlet and connect the Venturi injector and the pump through a jet pipe. During the operation of the pump, the Venturi injector and the jet pipe are used to suck the gas at the pump inlet.

[0003] During the implementation of the above self-priming scheme, generally, a solenoid valve or an electric control valve is used to control the on-off of the water inlet pipe of the Venturi injector. However, in a self-priming pump, the Venturi injector is generally installed in a humid working environment. For electrical components such as solenoid valves or electric control valves, they are easily damaged, resulting in high maintenance costs. Summary of the Utility Model

[0004] In view of the technical problem of high maintenance costs in the prior art, an embodiment of the utility model provides a jet self-priming rapid cut-off device, which includes: a cut-off valve body, a valve seat, a valve plate and a mechanical control module;

[0005] The cut-off valve body is arranged at the water inlet pipe of the Venturi injector of the self-priming pump. The cut-off valve body is located in the inner cavity of the self-priming tank body of the self-priming pump and is used to control the on-off of the water inlet pipe;

[0006] The valve seat is fixedly arranged inside the self-priming tank body, and the position of the valve seat matches that of the cut-off valve body;

[0007] The valve plate is slidably arranged on the valve seat, and the position of the valve plate matches that of the cut-off valve body. When the valve seat cuts off the water inlet pipe, the valve plate is inserted into the inner cavity of the cut-off valve to control the on-off of the water inlet pipe;

[0008] The mechanical control module is arranged in the inner cavity of the self-priming tank body. The mechanical control module is connected to the valve seat and the valve plate and is used to drive the valve plate to be inserted into the cut-off valve body.

[0009] Further, the mechanical control module includes: a floating ball, a fixed rod, a guide rod and a floating rod;

[0010] The floating ball is movably arranged in the inner cavity of the self-priming tank body;

[0011] The fixed rod is arranged on one side of the valve seat, and the top end of the fixed rod is fixedly connected to the valve seat;

[0012] The guide rod is arranged on the other side of the valve seat, and the guide rod is connected to the valve seat;

[0013] One end of the floating rod is hinged to the bottom end of the fixed rod, the other end of the floating rod is connected to the floating ball, the middle section of the floating rod is slidably connected to the guiding rod, and the middle section of the floating rod is connected to the tail end of the valve plate.

[0014] Furthermore, the guiding rod includes: a pair of guiding sections and a bent section; one ends of the pair of bent sections are respectively fixedly connected to both ends of the guiding section, the pair of guiding sections and the bent section are integrally formed, and the pair of guiding sections and the bent section are combined to form an n-shaped bent rod.

[0015] Furthermore, the guiding rod is vertically arranged in the inner cavity of the self-priming tank along the height direction of the self-priming tank body, the open end of the guiding rod faces the bottom of the inner cavity of the self-priming tank body, and the middle section of the floating rod passes through between the pair of guiding sections of the guiding rod.

[0016] Furthermore, the guiding rod is an elastic member, and one of the guiding sections is a wavy bent rod.

[0017] Furthermore, the bent section is a spiral bent rod.

[0018] The jet self-priming rapid cut-off device according to the embodiment of the present invention has the following beneficial effects:

[0019] 1. This device uses a mechanical control module with a pure mechanical structure to drive the valve plate to slide upward along the guide of the valve seat according to the height of the aqueous solution liquid level in the self-priming tank body, so that the valve plate is inserted into the cut-off valve body, thereby cutting off the water flow in the water inlet pipe flowing through the Venturi tube injector, so as to avoid the defect of high maintenance cost caused by using electrical components such as solenoid valves or electrically controlled valves to cut off the water flow flowing through the Venturi tube injector in the prior art, and prolong the service life of this device.

[0020] 2. This device uses a guiding rod with an n-shaped structure and certain elasticity to guide the floating rod, which can not only guide the floating rod, but also use the guiding section of the guiding rod in the shape of a wavy bent rod to limit the upward flipping of the floating rod, so as to achieve that when the buoyancy received by the floating ball reaches a certain degree, the guiding rod can be elastically deformed, and then the floating rod can flip upward along the guide of the guiding rod, without additionally setting a limiting mechanism to limit the flipping of the floating rod.

[0021] It should be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further explanation of the claimed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is an assembly schematic diagram according to an embodiment of the present invention (the cut-off valve body is in a conducting state);

[0023] Figure 2 is an assembly schematic diagram according to an embodiment of the present invention (the cut-off valve body is in a cut-off state);

[0024] Figure 3 Part drawing of the guide rod according to an embodiment of the present utility model.

[0025] Explanation of the attached drawing reference numerals:

[0026] 1 - Venturi injector, 11 - Water inlet pipe, 2 - Self - priming tank body, 3 - Cut - off valve body, 4 - Valve seat, 5 - Valve plate, 61 - Floating ball, 62 - Fixed rod, 63 - Guide rod, 631 - Guide section, 632 - Bent section, 64 - Floating rod. Detailed implementation manners

[0027] The preferred embodiments of the present utility model will be described in detail below in conjunction with the attached drawings, and the present utility model will be further elaborated.

[0028] Regarding the foregoing and other technical contents, features and effects of the present utility model, they will be clearly presented in the following detailed description of the embodiments with reference to the attached drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only with reference to the direction of the attached drawings. Therefore, the directional terms used are for illustration and not for limiting the present utility model. In addition, in all embodiments, the same reference numerals represent the same elements.

[0029] As Figure 1 , 2 shown, the jet self - priming quick - cut - off device according to an embodiment of the present utility model includes: a cut - off valve body 3, a valve seat 4, a valve plate 5 and a mechanical control module;

[0030] Specifically, as Figure 1 , 2 shown, the cut - off valve body 3 is arranged at the water inlet pipe 11 of the Venturi injector 1 of the self - priming pump. The cut - off valve body 3 is located in the inner cavity of the self - priming tank body 2 of the self - priming pump and is used to control the on - off of the water inlet pipe 11; the valve seat 4 is fixedly arranged inside the self - priming tank body 2, and the position of the valve seat 4 matches that of the cut - off valve body 3; the valve plate 5 is slidably arranged on the valve seat 4, and the position of the valve plate 5 matches that of the cut - off valve body 3. When the valve seat 4 cuts off the water inlet pipe 11, the valve plate 5 is inserted into the inner cavity of the cut - off valve to control the on - off of the water inlet pipe 11; the mechanical control module is arranged in the inner cavity of the self - priming tank body 2, the mechanical control module is connected to the valve seat 4, and the mechanical control module is connected to the valve plate 5 and is used to drive the valve plate 5 to be inserted into the cut - off valve body 3.

[0031] Furthermore, as Figure 1 , 2As shown in the figure, the mechanical control module includes: a float ball 61, a fixed rod 62, a guide rod 63 and a floating rod 64; the float ball 61 is movably arranged in the inner cavity of the self-priming tank body 2; the fixed rod 62 is arranged on one side of the valve seat 4, and the top end of the fixed rod 62 is fixedly connected to the valve seat 4; the guide rod 63 is arranged on the other side of the valve seat 4, and the guide rod 63 is connected to the valve seat 4; one end of the floating rod 64 is hinged to the bottom end of the fixed rod 62, the other end of the floating rod 64 is connected to the float ball 61, the middle section of the floating rod 64 is slidably connected to the guide rod 63, and the middle section of the floating rod 64 is connected to the tail end of the valve plate 5.

[0032] Further, as Figures 1 to 3 shown, the guide rod 63 includes: a pair of guide sections 631 and a bent section 632; one end of the pair of bent sections 632 is fixedly connected to both ends of the guide section 631 respectively, the pair of guide sections 631 and the bent section 632 are integrally formed, and the pair of guide sections 631 and the bent section 632 are combined to form an n-shaped bent rod.

[0033] Further, as Figures 1 to 3 shown, the guide rod 63 is vertically arranged in the inner cavity of the self-priming tank body 2 along the height direction of the self-priming tank body 2, the open end of the guide rod 63 faces the bottom of the inner cavity of the self-priming tank body 2, and the middle section of the floating rod 64 passes through between the pair of guide sections 631 of the guide rod 63.

[0034] Further, as Figures 1 to 3 shown, the guide rod 63 is an elastic member, and one of the guide sections 631 is a wavy bent rod. When the floating rod 64 is guided along the guide rod 63 and turns upward, when the floating rod 64 passes through between the pair of guide sections 631, the floating rod 64 is caught by the pair of guide sections 631. As the liquid level in the self-priming tank body 2 further rises, the buoyancy force on the float ball 61 also increases accordingly. When the buoyancy force on the float ball 61 increases to a certain extent, the guide rod 63 undergoes elastic deformation, and the pair of guide sections 631 of the guide rod 63 open outward, enabling the floating rod 64 to be driven by the float ball 61 to smoothly turn upward along the guide of the guide rod 63.

[0035] Further, as Figures 1 to 3 shown, the bent section 632 is a spiral bent rod.

[0036] During the operation of the double-suction pump, the aqueous solution is pumped into the inner cavity of the self-priming tank body 2 through the water inlet of the self-priming tank body 2, and the liquid level in the inner cavity of the self-priming tank body 2 rises accordingly. At the same time, the aqueous solution is input through the high-pressure water inlet of the water inlet pipe 11 of the Venturi tube injector, and after flowing through the Venturi tube injector, it flows out through the high-pressure water outlet of the water inlet pipe 11. During the process of the aqueous solution flowing through the Venturi tube injector, the air in the self-priming tank body 2 is pumped out.

[0037] As the liquid level in the self-priming tank body 2 rises, the position of the floating ball 61 also rises accordingly. During this process, the floating rod 64 rotates upward along the guide of the guide rod 63 with the hinge point between its bottom end and the bottom end of the fixed rod 62 as the axis, thereby pushing the gate plate to slide upward, inserting the gate plate into the cut-off valve body 3, and finally achieving the purpose of cutting off the aqueous solution flowing through the water inlet pipe 11.

[0038] As mentioned above, with reference to Figures 1 to 3 the jet self-priming rapid cut-off device according to the embodiment of the present invention is described, which has the following beneficial effects:

[0039] 1. The device uses a mechanical control module with a pure mechanical structure to drive the valve plate to slide upward along the guide of the valve seat according to the height of the aqueous solution level in the self-priming tank body, so that the valve plate is inserted into the cut-off valve body, thereby cutting off the water flow through the water inlet pipe of the venturi tube injector, avoiding the defect of high maintenance cost caused by using electrical components such as solenoid valves or electrically controlled valves to cut off the water flow through the venturi tube injector in the prior art, and prolonging the service life of the device.

[0040] 2. The device uses a guide rod with an n-shaped structure and certain elasticity to guide the floating rod, which can not only guide the floating rod, but also use the wave-shaped guide section of the guide rod to limit the upward rotation of the floating rod, so as to realize that when the buoyancy received by the floating ball reaches a certain degree, the guide rod can be elastically deformed, and then the floating rod can rotate upward along the guide of the guide rod without additionally setting a limit mechanism to limit the rotation of the floating rod.

[0041] It should be noted that in this specification, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, the elements defined by the statement "comprising..." do not exclude the existence of additional identical elements in the process, method, article or device including the said elements.

[0042] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be recognized that the above description should not be regarded as a limitation of the present invention. After those skilled in the art have read the above content, various modifications and substitutions to the present invention will be obvious. Therefore, the protection scope of the present invention should be defined by the appended claims.

Claims

1. A jet self-priming quick-cut device, characterized in that: Including: cut-off valve body, valve seat, valve plate and mechanical control module; The shut-off valve body is arranged at the water inlet pipe of the venturi ejector of the self-priming pump, and the shut-off valve body is located in the inner cavity of the self-priming tank body of the self-priming pump, and is used to control the on-off of the water inlet pipe; The valve seat is fixedly arranged inside the self-priming tank body, and the position of the valve seat matches that of the cut-off valve body; The valve plate is slidably arranged on the valve seat, and the position of the valve plate matches that of the valve body of the cut-off valve. When the valve seat cuts off the water inlet pipe, the valve plate is inserted into the inner cavity of the cut-off valve to control the on-off of the water inlet pipe; The mechanical control module is arranged in the inner cavity of the self-priming tank body, the mechanical control module is connected to the valve seat, and the mechanical control module is connected to the valve plate, and is used to drive the valve plate to be inserted into the shut-off valve body.

2. The jet self-priming quick-cutting device according to claim 1, characterized in that: The mechanical control module comprises: a floating ball, a fixing rod, a guide rod and a floating rod; The float ball is movably arranged in the inner cavity of the self-priming tank body; The fixing rod is arranged on one side of the valve seat, and the top end of the fixing rod is fixedly connected to the valve seat; The guide rod is arranged on the other side of the valve seat, and the guide rod is connected to the valve seat; One end of the float rod is hinged to the bottom end of the fixed rod, the other end of the float rod is connected to the float ball, the middle section of the float rod is slidably connected to the guide rod, and the middle section of the float rod is connected to the tail end of the valve plate.

3. The jet self-priming quick-cutting device according to claim 2, characterized in that: The guide rod comprises: a pair of guide sections and a bending section; one end of the pair of bending sections is fixedly connected to the two ends of the guide section respectively, the pair of guide sections and the bending section are integrally formed, and the pair of guide sections and the bending section are combined to form an N-shaped bent rod.

4. The jet self-priming quick-cutting device according to claim 3, characterized in that: The guide rod is vertically arranged in the inner cavity of the self-priming tank body along the height direction of the self-priming tank body, the open end of the guide rod faces the bottom of the inner cavity of the self-priming tank body, and the middle section of the float rod passes between the pair of guide sections of the guide rod.

5. The jet self-priming quick-cutting device according to claim 4, characterized in that: The guide rod is an elastic member, and one of the guide sections is a wave-shaped curved rod.

6. The jet self-priming quick-cutting device according to claim 3, characterized in that: The bending section is a spiral bending rod.

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