Check valve, check device and electrical equipment

Abstract

The invention belongs to the technical field of electrical equipment, and particularly relates to a check valve, a check device and electrical equipment. The check valve comprises a valve body and a valve element, the valve body is provided with a communicating opening, and a limiting part is arranged in the valve body. The valve element is movably arranged in the valve body, the valve element is provided with a sealing head capable of moving in a reciprocating mode so as to open and close the communication opening, the valve element is provided with a locking part, and under the condition that the sealing head of the valve element seals the communication opening, the locking part of the valve element can rotate to the position below the limiting part so as to lock the position of the valve element. According to the check valve, the sealing head of the valve element can be kept in the communicating opening of the valve body so that the sealing head can abut against the communicating opening, the sealing reliability and the sealing effect of the sealing head can be improved, and good practicability is achieved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of electrical equipment, and particularly relates to a check valve, a check device and an electrical equipment. BACKGROUND

[0002] Electrical equipment is currently widely used in daily life, especially in the kitchen and bathroom field, such as dishwashers, water purifiers, washing machines, water heaters and the like, which are widely used. Water flows through the above-mentioned electrical equipment, especially after being treated by the above-mentioned electrical equipment, the water needs to be discharged to the outside of the electrical equipment, and a check valve needs to be provided to prevent the discharged water from flowing back to the electrical equipment, thereby affecting the operation of the electrical equipment.

[0003] In the related art, the check valve has a problem of unreliable sealing after long-term use, which reduces the sealing performance of the check valve. SUMMARY

[0004] The present application provides a check valve, a check device and an electrical equipment, which aims to at least partly solve the technical problem of unreliable sealing of the check valve after long-term use, so as to improve the sealing performance of the check valve.

[0005] In a first aspect of the present application, a check valve is provided, comprising: a valve body provided with a communication port, a limiting portion being arranged in the valve body; a valve core movably arranged in the valve body, the valve core having a reciprocally movable sealing head to open and close the communication port, the valve core being provided with a locking portion, under the condition that the sealing head of the valve core closes the communication port, the locking portion of the valve core can be rotated to below the limiting portion to lock the position of the valve core.

[0006] The check valve provided by the present application has the following advantages: the valve body of the check valve is provided with a communication port, the valve core is arranged in the valve body, and the valve core has a reciprocally movable sealing head to open and close the communication port, so that the corresponding pipeline can be opened and closed to realize the check function; the valve body is provided with a limiting portion, and the valve core is provided with a locking portion, under the condition that the sealing head of the valve core closes the communication port, the locking portion of the valve core can be rotated to below the limiting portion to lock the position of the valve core, so that the sealing head of the valve core can be kept in the communication port of the valve body, and the sealing head can be tightly pressed against the communication port to improve the reliability and sealing effect of the sealing head, and the check valve has good practicability.

[0007] In some embodiments, the check valve further comprises: a movable member movably arranged in the valve body, a head portion of the movable member being provided with a driving portion, the driving portion being capable of abutting against the locking portion to drive the valve core to move into the valve body to close the communication port.

[0008] In some embodiments, the check valve further comprises a reset member arranged in the valve body to push the valve core to move away from the communication port. The reset member is compressed under the condition that the moving member drives the valve core to move into the valve body, and the reset member restores the deformation to separate the sealing head of the valve core from the communication port of the valve body to open the communication port of the valve body under the condition that the driving of the valve core by the moving member is released.

[0009] In some embodiments, the head of the driving part is provided with a driving groove, an opening side of the driving groove faces the communication port, the driving groove has a first guide slope inclined to the moving direction of the valve core, the locking part is movably arranged in the driving groove, the locking part is provided with a second guide slope matched with the first guide slope, and the second guide slope of the locking part is movable along the first guide slope to rotate the locking part below the limiting part. Under the condition that the sealing head of the valve core is closed to the communication port of the valve body by the driving member, the driving member continues to move into the valve body, the second guide slope of the locking part is movable along the first guide slope to rotate the locking part below the limiting part to lock the position of the sealing head of the valve core, and the sealing head of the valve core is kept in the communication port of the valve body.

[0010] In some embodiments, the driving groove further has a limiting surface, the limiting surface and at least part of the first guide slope are oppositely arranged, and the locking part is blocked by the limiting surface to limit the rotating position of the locking part.

[0011] In some embodiments, the outer circumferential surface of the moving member is provided with a first guide part, the inner side wall of the valve body is provided with a second guide part, and the first guide part and the second guide part are slidingly matched to guide the moving member to move back and forth in the valve body.

[0012] In some embodiments, the first guide part comprises a guide protrusion arranged on the outer circumferential surface of the moving member, and the second guide part comprises a guide groove arranged on the inner side wall of the valve body.

[0013] In some embodiments, the inner side wall of the valve body is provided with two rows of limiting protrusions arranged along the moving direction of the moving member in the valve body, and the two rows of limiting protrusions and the inner side wall of the valve body are configured as the guide groove.

[0014] In some embodiments, the bottom of the limiting protrusion is configured as the limiting part.

[0015] In some embodiments, the guide protrusion and the guide groove are correspondingly provided with a plurality of guide protrusions and guide grooves, and the driving groove is arranged at the bottom between adjacent guide protrusions.

[0016] In some embodiments, the locking portion has a locking part protruding from the outer circumferential surface of the driving portion, and the locking part is rotatable to below the limiting portion.

[0017] In some embodiments, the limiting portion and the locking portion are correspondingly provided with a plurality of portions.

[0018] In some embodiments, the valve core comprises a core body arranged in the valve body, a sealing head connected to a head portion of the core body, at least a portion of the sealing head having elasticity, a first guide sleeve connected to the core body, and the locking portion arranged on the outer circumferential surface of the first guide sleeve.

[0019] In some embodiments, the check valve further comprises a support washer arranged in the valve body, the support washer is arranged between the first guide sleeve and the sealing head, the support washer is provided with a through hole for the core body to move through, and the reset member is arranged between the support washer and the first guide sleeve.

[0020] In some embodiments, the movable member comprises a second guide sleeve movably sleeved on the outer circumferential surface of the first guide sleeve, the driving portion is arranged at the bottom of the second guide sleeve, and a guide rod is connected to the back of the second guide sleeve, the guide rod movably passes through the valve body and is connected with a driving member for driving the movable member to reciprocate in the valve body.

[0021] In some embodiments, the check valve further comprises a support member rotatably connected to the valve body and rotatably connected with the guide rod, and a driving member connected to the valve body, the driving member has a telescopic end, the telescopic end of the driving member is connected with the support member to drive the support member to rotate on the valve body and drive the movable member to reciprocate in the valve body.

[0022] In some embodiments, the middle portion of the support member is connected with the valve body, and the two ends of the support member are respectively connected with the second guide sleeve and the telescopic end of the driving member.

[0023] In some embodiments, the check valve further comprises a detection member and a trigger member matched with each other, the trigger member is connected with the support member to rotate synchronously with the support member, and the trigger member and the detection member are detachably contacted to confirm the position of the support member.

[0024] In some embodiments, the driving member comprises a linear reciprocating mechanism.

[0025] In some embodiments, the driving member comprises a solenoid valve and a transmission rod that cooperate with each other, so as to control the extension and retraction of the transmission rod relative to the solenoid valve under the condition that the solenoid valve is powered on, and the transmission rod is configured as the extension and retraction end of the driving member.

[0026] In the second aspect of the present application, the present application further provides a check device, which comprises: a pipeline having a water inlet end and a water outlet end; and the check valve as described above, which is arranged on the pipeline and has a communication port that can be connected to the water inlet end and the water outlet end.

[0027] The check device with the check valve as described above can keep the sealing head of the valve core of the check valve in the communication port of the valve body, so that the sealing head is tightly pressed against the communication port, thereby improving the reliability and sealing effect of the sealing head, and having good practicability.

[0028] In the third aspect of the present application, the present application further provides an electrical appliance, which comprises the check device as described above.

[0029] The electrical appliance with the check device as described above can keep the sealing head of the valve core of the check valve in the communication port of the valve body, so that the sealing head is tightly pressed against the communication port, thereby improving the reliability and sealing effect of the sealing head, and having good practicability. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative effort.

[0031] Figure 1 A structural schematic view showing that the communication port of the check device in one or more embodiments of the present application is in an open state is shown;

[0032] Figure 2 A structural schematic view showing that the communication port of the check device in one or more embodiments of the present application is in a closed state is shown; Figure 1 A structural schematic view showing that the communication port of the check device in one or more embodiments of the present application is in a closed state is shown;

[0033] Figure 3 A structural schematic view showing that the communication port of the check device in one or more embodiments of the present application is in a closed state is shown; Figure 1 A partial schematic view of the pipeline in one or more embodiments of the present application is shown;

[0034] Figure 4 A partial schematic view of the pipeline in one or more embodiments of the present application is shown; Figure 1 A cross-sectional schematic view of one or more embodiments of the present application is shown;

[0035] Figure 5 A cross-sectional schematic view of one or more embodiments of the present application is shown; Figure 4 An assembly schematic view of the moving part and part of the valve core in one or more embodiments of the present application is shown;

[0036] Figure 6 A structural schematic view of the movable member in the valve body is shown. Figure 5

[0037] Figure 7 A partial schematic view of the valve core in the valve body is shown. Figure 5

[0038] Figure 8 An internal schematic view of the valve body is shown.

[0039] Figure 9 A structural schematic view of the valve core with the seal head removed is shown.

[0040] Figure 10 A structural schematic view of the support member in the valve body is shown. Figure 1

[0041] Figure 11 A structural schematic view of the driving member is shown.

[0042] Explanation of reference signs:

[0043] Pipe-a, water inlet end-a1, water outlet end-a2;

[0044] Check valve-b;

[0045] Valve body-1, communication port-11, second guide portion (guide groove)-12, limiting portion (limiting protrusion)-13, valve seat-14, valve cover-15, cantilever-16, bracket-17, limiting portion-18;

[0046] Valve core-2, seal head-21, locking portion (locking protrusion)-22, second guide slope-221, first side surface-222, second side surface-223, locking portion-224, rib-23, valve cap-24, reinforcing portion-25, first guide sleeve-26, core body-27;

[0047] Movable member-3, driving portion-31, driving groove-32, first guide slope-321, limiting surface-322, first guide portion (guide protrusion)-33, second guide sleeve-34, guide rod-35;

[0048] Reset member-4;

[0049] Support gasket-5, through hole-501;

[0050] Support member-6, connecting portion-61, rotating portion-62, supporting portion-63, waist-shaped hole-631;

[0051] Driving member-7, solenoid valve-71, transmission member-72;

[0052] Detection member-8;

[0053] ​​​Trigger element-9, trigger protrusion-91. Detailed Implementation

[0054] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0055] In related technologies, a check device includes a pipe and a check valve. The pipe has an inlet and an outlet, and the check valve is installed on the pipe. The check valve has a connection port that can connect the inlet and outlet. When the electrical equipment drains water, the connection port of the check valve opens, and water flows through the check device to the drain pipe. After drainage is completed, the connection port of the check valve closes to prevent residual water remaining in the drain pipe from flowing back.

[0056] However, the valve core of the check valve is made of flexible rubber, which will deform after long-term use, resulting in unreliable sealing and reduced sealing performance of the check valve.

[0057] Based on the above-mentioned technical problems, this application provides a check valve, a check device, and an electrical device, which aims to at least partially solve the technical problem of unreliable sealing of check valves after long-term use, so as to improve the sealing performance of check valves.

[0058] Figure 1 This diagram illustrates a check valve with its connection port in an open state, according to one or more embodiments of this application. Figure 2 It shows Figure 1 The diagram shows the check valve with its connecting hole in a closed state. Figure 3 It shows Figure 1 A partial schematic diagram of the pipes in the diagram. (Combined with...) Figures 1-3 The check valve provided in this application also includes a pipe a and a check valve b. The pipe a has an inlet a1 and an outlet a2. The check valve b is installed on the pipe a and has a connection port 11, which can connect the inlet a1 and the outlet a2.

[0059] Figure 4 It shows Figure 1 A cross-sectional schematic diagram. Combined with... Figure 4The check valve b includes a valve body 1 and a valve core 2. The valve body 1 is provided with a communication port 11 and a limiting part 18 is provided on the inner side wall of the valve body 1. The valve core 2 is movably disposed in the valve body 1 and has a reciprocating sealing head 21 to open and close the communication port 11 to connect or block the inlet end a1 and the outlet end a2. The valve core 2 is provided with a locking part 22. When the sealing head 21 of the valve core 2 seals the communication port 11, the locking part 22 of the valve core 2 can rotate to the bottom of the limiting part 18 to lock the position of the valve core 2.

[0060] The check valve b provided in this application has a connecting port 11 in its valve body 1, and a valve core 2 is disposed inside the valve body 1. The valve core 2 has a reciprocating sealing head 21 to open and close the connecting port 11, thereby opening and closing the corresponding pipeline a to achieve the check function. Since the inner side wall of the valve body 1 is provided with a limiting part 18, and the valve core 2 is provided with a locking part 22, the locking part 22 of the valve core 2 can be rotated to the lower part of the limiting part 18 to lock the sealing head 21 of the valve core 2 to seal the connecting port 11. This allows the sealing head 21 of the valve core 2 to be kept inside the connecting port 11 of the valve body 1, so that the sealing head 21 is pressed against the connecting port 11, thereby improving the sealing reliability and sealing effect of the sealing head 21, and has good practicality.

[0061] Combination Figure 4 In some embodiments, the check valve b may also include a movable element 3 that can move back and forth within the valve body 1. Figure 5 It shows Figure 4 Assembly diagram of the moving parts and valve core. Figure 6 It shows Figure 5 A structural diagram of the moving parts in the diagram. Figure 7 It shows Figure 5 A partial schematic diagram of the valve core. (Combined with...) Figures 5-7 The head of the movable part 3 is provided with a driving part 31, which can abut against the locking part 22 on the valve core 2 to drive the valve core 2 to move into the valve body 1 so that the sealing head 21 on the valve core 2 closes the communication port 11 on the valve body 1 to cut off the pipeline a.

[0062] Combination Figure 4 In some embodiments, the check valve b may further include a reset member 4 disposed within the valve body 1 to push the valve core 2 to move away from the communication port 11 to open the communication port 11.

[0063] In some embodiments, under the condition that the driving portion 31 abuts against the locking portion 22 on the valve core 2 to drive the valve core 2 to move into the valve body 1, the sealing head 21 on the valve core 2 closes the communication port 11 on the valve body 1, and at the same time, the restoring member 4 is compressed, under the condition that it is required to open the communication port 11, the movable member 3 is released, the restoring member 4 restores the deformation to drive the valve core 2 to move away from the communication port 11 to open the communication port 11.

[0064] In other embodiments, under the condition that the driving portion 31 abuts against the locking portion 22 on the valve core 2 to drive the valve core 2 to move into the valve body 1, the sealing head 21 on the valve core 2 closes the communication port 11 on the valve body 1, and at the same time, the restoring member 4 is stretched, under the condition that it is required to open the communication port 11, the movable member 3 is released, the restoring member 4 restores the deformation to drive the valve core 2 to move away from the communication port 11 to open the communication port 11.

[0065] In combination with 5- Figure 7 In some embodiments, the head portion of the driving portion 31 can be provided with a driving groove 32, the opening side of the driving groove 32 facing the communication port 11, the driving groove 32 having a first guide slope 321 inclined to the moving direction of the valve core 2, the locking portion 22 of the valve core 2 movably arranged in the driving groove 32, the locking portion 22 being provided with a second guide slope 221 matched with the first guide slope 321, the second guide slope 221 of the locking portion 22 being movable along the first guide slope 321 to make the locking portion 22 rotate to the lower side of the limiting portion 18. Under the condition that the driving member 7 drives the sealing head 21 of the valve core 2 to close the communication port 11 of the valve body 1, the control driving member 7 continues to move into the valve body 1, the driving member 7 provides an axial downward force to the valve core 2, the restoring member 4 provides an axial upward force to the valve core 2, due to the matching of the second guide slope 221 on the locking portion 22 and the first guide slope 321, the second guide slope 221 of the locking portion 22 is movable along the first guide slope 321, and further makes the locking portion 22 rotate to the lower side of the limiting portion 18 to lock the position of the sealing head 21 of the valve core 2, so that the sealing head 21 of the valve core 2 is kept in the communication port 11 of the valve body 1.

[0066] In combination with 5- Figure 7 In some embodiments, the driving groove 32 further has a limiting face 322, the limiting face 322 and at least part of the first guide slope 321 are oppositely arranged, the locking portion 22 can be blocked by the limiting face 322 to limit the rotating position of the locking portion 22, so that the valve core 2 cannot continue to rotate and is kept in a static posture to lock the position of the sealing head 21 of the valve core 2, so that the sealing head 21 of the valve core 2 is kept in the communication port 11 of the valve body 1.

[0067] In combination with 6, in some embodiments, the driving groove 32 can be V-shaped, i.e. the driving groove 32 is jagged, one side wall of which is the first guide slope 321 and the other side wall of which is the limiting surface 322, the top of the first guide slope 321 and the limiting surface 322 intersect, and the first guide slope 321 and the limiting surface 322 can be symmetrically arranged. In other embodiments, the driving groove 32 can also be U-shaped or other shapes, except that the driving groove 32 needs to have a slope as the first guide slope 321, and the shape of the limiting surface 322 can not be limited, for example, the limiting surface 322 can be a slope, an arc surface or a curved surface, etc.

[0068] In combination with Figure 7 In some embodiments, the locking portion 22 can be block-shaped, the first guide slope 321 can be arranged at the top of the locking portion 22, the locking portion 22 is provided with a first side surface 222 and a second side surface 223 on both sides thereof, the first side surface 222 is connected to the higher end of the first guide slope 321, and the second side surface 223 is connected to the lower end of the first guide slope 321, under the condition that the locking portion 22 rotates below the limiting portion 18, the first side surface 222 abuts against the limiting surface 322 to limit the rotating position of the locking portion 22.

[0069] In combination with Figure 7 In some embodiments, the first side surface 222 and the second side surface 223 can both be planes parallel to the axial direction of the valve core 2, or can be other shapes, for example, arc surfaces or curved surfaces, etc., which are not limited herein.

[0070] Figure 8 An internal schematic view of the valve body is shown. In combination with Figure 6 In addition Figure 8 In some embodiments, the outer peripheral surface of the movable element 3 can be provided with a first guide portion 33, and the inner side wall of the valve body 1 is provided with a second guide portion 12, the first guide portion 33 and the second guide portion 12 are in sliding fit to guide the reciprocating movement of the movable element 3 in the valve body 1.

[0071] In combination with Figure 6 In addition Figure 8 In some embodiments, the first guide portion 33 can include a guide protrusion 33 arranged on the outer peripheral surface of the movable element 3, and the second guide portion 12 can include a guide groove 12 arranged on the inner side wall of the valve body 1. When the movable element 3 reciprocates in the valve body 1, the guide protrusion 33 slides in the guide groove 12 to guide the reciprocating movement of the movable element 3 in the valve body 1.

[0072] In combination with Figure 8In some embodiments, the inner side wall of the valve body 1 is provided with two rows of limiting protrusions 13, which can be arranged along the moving direction of the movable member 3 in the valve body 1, and the two rows of limiting protrusions 13 and the inner side wall of the valve body 1 can be configured as the above-mentioned guide groove 12.

[0073] In combination Figure 4 In some embodiments, the driving part 31 is arranged on the bottom of the guide protrusion 33, and the locking part 22 can also reciprocate in the guide groove 12. Under the condition that the communication port 11 of the valve body 1 is in the open state, under the action of the elastic force of the reset member 4, the locking part 22 and the guide protrusion 33 on the driving member 7 move in the guide groove 12 away from the communication port 11 until they move to the highest position of the guide groove 12, so that the sealing head 21 on the valve core 2 is separated from the communication port 11, and the pipe body is in the conducting state. Under the condition that the communication port 11 of the valve body 1 is switched to the closed state, the control movable member 3 moves towards the communication port 11 and overcomes the elastic force of the reset member 4, so that the locking part 22 and the guide protrusion 33 on the driving member 7 move in the guide groove 12 towards the communication port 11 and are pushed out from the lowest position of the guide groove 12. When the locking part 22 is pushed out from the lowest position of the guide groove 12, the second guide slope 221 of the locking part 22 moves along the first guide slope 321 on the driving part 31 of the movable member 3, so that the locking part 22 is rotated to below the limiting part 18, to lock the position of the sealing head 21 of the valve core 2, so that the sealing head 21 of the valve core 2 is kept in the communication port 11 of the valve body 1. At this time, the movable member 3 can be released to keep the movable member 3 in a free state. Under the condition that it is required to switch the communication port 11 of the valve body 1 to the open state, the movable member 3 is controlled to move towards the communication port 11 and overcome the elastic force of the reset member 4, so that the second guide slope 221 of the locking part 22 moves along the first guide slope 321 on the driving part 31 of the movable member 3, so that the locking part 22 is rotated to below the guide protrusion 33 of the movable member 3, and then the movable member 3 is released. Under the action of the elastic force of the reset member 4, the locking part 22 and the guide protrusion 33 on the driving member 7 are pushed into the guide groove 12 from the lowest position of the guide groove 12 and move away from the communication port 11. When the locking part 22 and the guide protrusion 33 on the driving member 7 are in the guide groove 32 to the highest position of the guide groove 12, the sealing head 21 on the valve core 2 is separated from the communication port 11, so that the pipe body is in the conducting state.

[0074] In combination Figure 8 In some embodiments, the bottom of the limiting protrusion 13 can be configured as the above-mentioned limiting part 18. In other embodiments, the limiting part 18 can also be a protruding part arranged on the inner side wall of the valve body 1 and protruding from the inner side wall of the valve body 1, which is not limited herein.

[0075] In some embodiments, a plurality of guiding protrusions 33 are arranged on the circumferential surface of the valve core 2 at intervals around the circumference of the valve core 2, and a plurality of guiding grooves 12 are arranged on the inner side wall of the valve body 1 at intervals around the circumference of the valve body 1. The sliding of the plurality of guiding protrusions 33 in the corresponding guiding grooves 12 can improve the balance of the force on the guiding protrusions 33.

[0076] In some embodiments, the driving grooves 32 are arranged at the bottom between the adjacent guiding protrusions 33 and are arranged continuously, so that the bottom of the driving member 7 is sawtooth-shaped.

[0077] In combination Figure 5 In some embodiments, the locking portion 22 has a locking part 224 protruding from the outer circumferential surface of the driving portion 31. When the second guiding slope 221 of the locking portion 22 moves along the first guiding slope 321 on the driving portion 31 of the movable member 3, the locking part 224 of the locking portion 22 can rotate to the lower side of the limiting portion 18 to lock the position of the sealing head 21 of the valve core 2, so that the sealing head 21 of the valve core 2 is kept in the communication port 11 of the valve body 1.

[0078] In some embodiments, a plurality of limiting portions 18 are arranged on the inner wall of the valve body 1 around the circumference of the valve body 1, and a plurality of locking portions 22 are arranged on the outer circumferential surface of the valve core 2 at intervals around the circumference of the valve core 2, so as to improve the reliability of the sealing head 21 when locked.

[0079] In combination Figure 4 In some embodiments, the valve body 1 can be provided with a valve seat 14 and a valve cover 15. The communication port 11 is arranged at one end of the valve seat 14, and the valve cover 15 is arranged at the other end of the valve seat 14 to seal the valve seat 14.

[0080] In some embodiments, the valve core 2 is arranged in the valve seat 14. Figure 9 A structural schematic diagram of the valve core with the sealing head removed is shown, in combination Figure 9 The valve core 2 includes a core body 27 and the above-mentioned sealing head 21. The core body 27 is arranged in the valve seat 14, and the sealing head 21 is connected to the head portion of the core body 27. At least part of the sealing head 21 is elastic to abut against the communication hole 51 when the sealing head 21 closes the communication port 11, so as to be pressed by the side wall of the communication port 11, thereby improving the closing effect on the communication port 11 and the sealing performance of the check valve b.

[0081] In some embodiments, the sealing head 21 can be inserted on the head of the core 27; or, the sealing head 21 can also be adhered on the head of the core 27; or, the sealing head 21 is inserted on the head of the core 27, and the reliability of the connection and assembly of the sealing head 21 on the core 27 is improved by the way of adhesion, which is not limited.

[0082] In combination Figure 9 In some embodiments, a plurality of ribs 23 can be arranged on the circumference of the valve core 2, and the plurality of ribs 23 can be arranged along the axial direction of the valve core 2 to improve the strength of the valve core 2.

[0083] In combination Figure 9 In some embodiments, the valve core 2 further comprises a valve cap 24 and a reinforcing portion 25, wherein the valve cap 24 is connected to the tail of the valve body 1, and the reinforcing portion 25 is connected to the middle part of the circumference of the valve core 2, and the reinforcing portion 25 can be an annular protrusion arranged on the circumference of the valve core 2, and the plurality of ribs 23 are connected between the valve cap 24 and the reinforcing portion 25.

[0084] In combination Figure 9 In some embodiments, the valve core 2 further comprises a first guide sleeve 26 connected to the core 27, and the above-mentioned locking portion 22 is arranged on the outer circumferential surface of the first guide sleeve 26.

[0085] In combination Figure 9 In some embodiments, the first guide sleeve can be connected to the circumferential surface of the plurality of ribs 23, and the radius size thereof can be slightly smaller than the radius size of the valve seat 14, so that the first guide sleeve can move or / and rotate in the valve seat 14.

[0086] In combination Figure 9 In some embodiments, the above-mentioned locking portion 22 can be a locking protrusion arranged on the outer circumferential surface of the first guide sleeve 26, which can be integrally formed on the outer circumferential surface of the first guide sleeve 26, the top of the locking protrusion is provided with the above-mentioned second guide inclined surface 221, and the bottom of the locking protrusion can be a plane perpendicular to the circumferential direction of the valve core 2, and the two sides of the locking portion 22 around the circumferential surface of the first guide sleeve (i.e. the above-mentioned first side and the second side) can be planes parallel to the axis of the valve core 2, wherein the first side of the locking portion 22 with a longer length can be blocked by the limiting surface 322 of the driving groove 32.

[0087] In combination Figure 4In some embodiments, the check valve b can further include a supporting washer 5 arranged in the valve body 1, the supporting washer 5 is arranged between the first guide sleeve and the sealing head 21, the supporting washer 5 is provided with a through hole 51 through which the core 27 moves, the supporting washer 5 and the first guide sleeve are provided with the reset member 4, the top end of the reset member 4 can be connected in the first guide sleeve, the bottom end of the reset member 4 can be connected on the supporting washer 5, and the reset member 4 can be sleeved on the core 27, so that the compression deformation of the reset member 4 can be guided.

[0088] In combination Figure 6 In some embodiments, the movable member 3 can include a second guide sleeve 34 and a guide rod 35, the second guide sleeve 34 is sleeved on the outer circumferential surface of the first guide sleeve 26, the driving part 31 is arranged at the bottom of the second guide sleeve 34, and the guide rod 35 is connected at the back of the second guide sleeve 34 and moves through the valve cover 15 of the valve body 1 to be connected with the driving member 7 for driving the movable member 3 to move reciprocatingly in the valve body 1.

[0089] In some embodiments, the radius of the second guide sleeve 34 can be slightly larger than the radius of the first guide sleeve 26, so that the second guide sleeve 34 can be sleeved on the first guide sleeve 26 with a gap, and the radius of the second guide sleeve 34 can be smaller than the radius of the valve seat 14, so that the second sleeve can move reciprocatingly in the valve seat 14.

[0090] In combination Figure 6 In some embodiments, the outer circumferential surface of the second guide sleeve 34 can be provided with the guide protrusions 33, and the guide protrusions 33 can be integrally formed on the outer circumferential surface of the second guide sleeve 34.

[0091] In combination Figure 1 And Figure 2In some embodiments, the check valve b can further include a support 6 rotatably connected to the valve body 1 and rotatably connected to the guide rod 35, and a driving member 7 connected to the valve body 1, the driving member 7 having a retractable telescopic end, the telescopic end of the driving member 7 being connected to the support 6 to drive the support 6 to rotate on the valve body 1 to drive the movable member 3 to reciprocate in the valve body 1. When it is required to close the communication port 11 of the valve body 1, the telescopic end of the driving member 7 is controlled to extend to drive the support 6 to rotate on the valve body 1, the rotating support 6 drives the movable member 3 to move towards the communication port 11 through the guide rod 35, and the locking portion 22 and the guide protrusion 33 on the driving member 7 are moved towards the communication port 11 in the guide groove 12 against the elastic force of the return member 4, and are pushed out of the lowest position of the guide groove 12, when the locking portion 22 is pushed out of the lowest position of the guide groove 12, the second guide slope 221 of the locking portion 22 moves along the first guide slope 321 on the driving portion 31 of the movable member 3 to rotate the locking portion 22 below the limiting portion 18 to lock the position of the sealing head 21 of the valve core 2, so that the sealing head 21 of the valve core 2 is kept in the communication port 11 of the valve body 1, at this time, the telescopic end of the driving member 7 is controlled to stop extending to release the movable member 3 to keep the movable member 3 in a free state. When it is required to switch the communication port 11 of the valve body 1 to an open state, the telescopic end of the driving member 7 is controlled to extend again to drive the support 6 to rotate on the valve body 1, the rotating support 6 drives the movable member 3 to move towards the communication port 11 through the guide rod 35, and the second guide slope 221 of the locking portion 22 moves along the first guide slope 321 on the driving portion 31 of the movable member 3 to rotate the locking portion 22 below the guide protrusion 33 of the movable member 3, then, the telescopic end of the driving member 7 is controlled to stop extending to release the movable member 3, under the action of the elastic force of the return member 4, the locking portion 22 and the guide protrusion 33 on the driving member 7 are pushed into the guide groove 12 from the lowest position of the guide groove 12 and move away from the communication port 11, when the locking portion 22 and the guide protrusion 33 on the driving member 7 are in the guide groove 12 at the highest position of the guide groove 12, the sealing head 21 on the valve core 2 is separated from the communication port 11 to make the pipe body in a conductive state.

[0092] The check valve b provided in the present application only needs to control the driving member 7 to perform two triggering actions to realize the opening and closing of the communication port 11 on the valve body 1, and in the condition that the communication port 11 of the valve body 1 is closed, the driving member 7 is in a stop working state in the condition that the communication port 11 of the valve body 1 is kept in a closed state or an open state, which can save energy consumption and correspondingly improve the service life of the equipment, and has good practicability.

[0093] In some embodiments, the middle part of the support member 6 is connected to the valve body 1, and the two ends of the support member 6 are respectively connected to the second guide sleeve 34 and the telescopic end of the drive member 7, so that the drive member 7, the support member 6 and the guide rod 35 form a lever structure that rotates around the middle part of the support member 6, and can reduce the space occupied by the check valve b.

[0094] Figure 10 It shows Figure 1 A structural schematic diagram of the support components. (Combined with...) Figure 10 In specific implementation, the support member 6 can be a block structure, which has a connecting part 61, a rotating part 62 and a supporting part 63. The supporting part 63 and the connecting part 61 of the support member 6 are respectively disposed at both ends of the support member 6, and the rotating part 62 of the support member 6 is disposed in the middle of the support member 6. The supporting part 63 of the support member 6 is connected to the guide rod 35, and the connecting part 61 of the support member 6 is connected to the telescopic end of the drive member 7, so that the support member 6 rotates around its rotating part 62 under the drive of the telescopic end of the support member 6, so that the supporting part 63 of the drive member 7 drives the movable part 3 with the rod body to move in the valve body 1.

[0095] Combination Figure 10 In some embodiments, the support member 6 can be a generally block-shaped structure. The support portion 63 of the support member 6 can be provided with an oblong hole 631, through which the rod passes to connect the rod to the support portion 63 of the support member 6. Figure 1 , Figure 2 as well as Figure 10 A cantilever 16 may be provided on the valve body 1. The cantilever 16 moves through the rotating part 62 of the support member 6 and is connected by a pin or other connecting member to realize the rotatable connection between the support member 6 and the valve body 1. The drive member 7 can be connected to the outside of the valve body 1 by a bracket 17. The telescopic end of the drive member 7 passes through the connecting part 61 of the support member 6 and is connected by a pin or other connecting member to realize the connection between the support member 6 and the telescopic end of the drive member 7.

[0096] It should be noted that in other embodiments, the connecting part 61 of the driving member 7 can also be disposed between its supporting part 63 and rotating part 62, which can also achieve the purpose of driving the movable member 3 with the rod to move within the valve body 1.

[0097] Combination Figure 1 , Figure 2 as well as Figure 10 In some embodiments, the check valve b may further include a cooperating detection element 8 and a trigger element 9, the trigger element 9 being connected to the support element 6 to rotate synchronously with the support element 6, and the trigger element 9 and the detection element 8 being separably contacted to confirm the position of the support element 6.

[0098] In a specific implementation, a trigger protrusion 91 can be provided on the side of the support member 6 facing the valve body 1. The trigger protrusion 91 can be configured as a trigger member 9. The trigger protrusion 91 rotates synchronously with the support member 6. The detection member 8 can be a micro switch or a position sensor, etc., which can be connected to the valve body 1. During the rotation of the trigger protrusion 91 and the valve body 1, the trigger protrusion 91 can contact the detection part of the detection member 8 to confirm the position of the support member 6, and thus confirm the opening and closing state of the check valve b.

[0099] Figure 11 A schematic diagram of the drive component is shown. (Combined with...) Figure 11 In some embodiments, the driving element 7 may include a solenoid valve 71 and a transmission element 72 that cooperate with each other. When the solenoid valve 71 is energized, the transmission rod is controlled to extend or retract relative to the solenoid valve 71. This transmission rod is configured as the extension or retraction end of the driving element 7. Using the solenoid valve 71 as the driving element 7 only requires energizing the solenoid valve 71 to achieve the extension or retraction switching of the extension or retraction end of the driving element 7, which is simple, practical, and energy-saving.

[0100] In other embodiments, the drive unit 7 may also be a linear reciprocating motion mechanism such as a wax motor or a linear motor, and there is no limitation on this.

[0101] In a second aspect of this application, a check valve is also provided, which includes a pipe a and the aforementioned check valve b. The pipe a has an inlet a1 and an outlet a2. The check valve b is disposed on the pipe a, and the connecting port 11 of the check valve b can connect the inlet a1 and the outlet a2.

[0102] The check device with the aforementioned check valve b can keep the sealing head 21 of the valve core 2 of the check valve b inside the communication port 11 of the valve body 1, so that the sealing head 21 is pressed against the communication port 11, thereby improving the sealing reliability and sealing effect of the sealing head 21, and has good practicality.

[0103] In a third aspect, this application also provides an electrical device that includes the aforementioned check device.

[0104] Electrical equipment equipped with the above-mentioned check valve device can keep the sealing head 21 of the valve core 2 of the check valve b inside the communication port 11 of the valve body 1, so that the sealing head 21 is pressed against the communication port 11, thereby improving the sealing reliability and sealing effect of the sealing head 21, and has good practicality.

[0105] In some embodiments, the electrical device may be a dishwasher, a water purifier, a washing machine, a water heater, etc., and there is no limitation thereto. Taking a dishwasher as an example, the electrical device equipped with the aforementioned check device will be further described.

[0106] In some embodiments, the check valve can be assembled at the drain outlet of the dishwasher, when the dishwasher is draining, the drain pump will pump the water in the dishwasher into the pipe a of the check valve, and control the communication port 11 to open, the water flows through the check valve to the drain pipe a, after the drainage is completed, the communication port 11 of the check valve is closed to prevent the residual water remaining in the drain pipe a from flowing back to the container, which has good practicability.

[0107] In the present application, unless specifically defined and limited otherwise, the first feature is "on" or "under" the second feature, which can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "over" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0108] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0109] In the present application, unless specifically defined and limited otherwise, the terms "connection", "fixing" and the like should be understood broadly, for example, "fixing" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through intermediate medium; can be internal connection of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0110] In addition, in the present application, the description such as "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless specifically defined and limited otherwise.

[0111] While the embodiments of the present application have been shown and described, it is to be understood that the embodiments can be varied, modified, substituted and changed by those skilled in the art without departing from the principles and spirit of the present application, the scope of which is defined by the claims and their equivalents.

Claims

1. A check valve, characterized in that, The check valve includes: The valve body is provided with a communication port, and a limiting part is provided inside the valve body; A valve core is movably disposed within the valve body. The valve core has a reciprocating sealing head to open and close the communication port. The valve core is provided with a locking part. When the sealing head of the valve core seals the communication port, the locking part of the valve core can rotate to below the limiting part to lock the position of the valve core.

2. The check valve according to claim 1, characterized in that, The check valve also includes: The movable part can move back and forth within the valve body. The head of the movable part is provided with a driving part, which can abut against the locking part to drive the valve core to move into the valve body to close the communication port.

3. The check valve according to claim 2, characterized in that, The check valve also includes: A reset element is disposed within the valve body to push the valve core to move away from the communication port.

4. The check valve according to claim 3, characterized in that, The head of the drive unit is provided with a drive groove, the opening side of the drive groove faces the communication port, the drive groove has a first guide slope inclined to the moving direction of the valve core, the locking part is movably disposed in the drive groove, the locking part is provided with a second guide slope that cooperates with the first guide slope, the second guide slope of the locking part can move along the first guide slope so that the locking part rotates to below the limiting part.

5. The check valve according to claim 4, characterized in that, The driving groove also has a limiting surface, at least a portion of which is disposed opposite to the first guide slope, and the locking part can be blocked by the limiting surface.

6. The check valve according to claim 4, characterized in that, The outer peripheral surface of the movable component is provided with a first guide portion, and the inner sidewall of the valve body is provided with a second guide portion. The first guide portion and the second guide portion slide in cooperation to provide guidance for the reciprocating movement of the movable component within the valve body.

7. The check valve according to claim 6, characterized in that, The first guide portion includes a guide protrusion disposed on the outer peripheral surface of the movable member, and the second guide portion includes a guide groove disposed on the inner sidewall of the valve body.

8. The check valve according to claim 7, characterized in that, The inner wall of the valve body is provided with two rows of limiting protrusions. The limiting protrusions are arranged along the moving direction of the movable member in the valve body. The two rows of limiting protrusions and the inner wall of the valve body constitute the guide groove.

9. The check valve according to claim 8, characterized in that, The bottom of the limiting protrusion is configured as the limiting portion.

10. The check valve according to any one of claims 6-9, characterized in that, Multiple guide protrusions and guide grooves are provided correspondingly, and the drive groove is provided at the bottom between adjacent guide protrusions.

11. The check valve according to any one of claims 2-9, characterized in that, The locking part has a locking portion that protrudes from the outer peripheral surface of the driving part, and the locking portion can be rotated to be below the limiting part.

12. The check valve according to any one of claims 1-9, characterized in that, The limiting part and the locking part are provided in multiple ways.

13. The check valve according to any one of claims 3-9, characterized in that, The valve core includes: A core body is disposed within the valve body, and a sealing head is connected to the head of the core body, at least a portion of the sealing head being elastic; The first guide sleeve is connected to the core, and the locking part is disposed on the outer peripheral surface of the first guide sleeve.

14. The check valve according to claim 13, characterized in that, The check valve also includes: A support gasket is disposed within the valve body, between the first guide sleeve and the sealing head, and has a through hole for the core to move through. A reset member is disposed between the support gasket and the first guide sleeve.

15. The check valve according to claim 13, characterized in that, The movable component includes: The second guide sleeve is movably fitted onto the outer circumferential surface of the first guide sleeve, and the driving part is disposed at the bottom of the second guide sleeve; A guide rod is attached to the back of the second guide sleeve and moves through the valve body to connect with a drive element that drives the movable element to reciprocate within the valve body.

16. The check valve according to claim 15, characterized in that, The check valve also includes: A support member is rotatably connected to the valve body and rotatably connected to the guide rod; A drive component is connected to the valve body. The drive component has a retractable telescopic end, which is connected to the support component to drive the support component to rotate on the valve body, thereby causing the movable component to reciprocate within the valve body.

17. The check valve according to claim 16, characterized in that, The middle part of the support member is connected to the valve body, and the two ends of the support member are respectively connected to the second guide sleeve and the telescopic end of the drive member.

18. The check valve according to claim 16 or 17, characterized in that, The check valve also includes a detection element and a trigger element that cooperate with each other. The trigger element is connected to the support element to rotate synchronously with the support element. The trigger element and the detection element can be detachably contacted to confirm the position of the support element.

19. The check valve according to claim 16 or 17, characterized in that, The driving component includes a linear reciprocating motion mechanism.

20. The check valve according to claim 19, characterized in that, The drive unit includes a cooperating solenoid valve and a transmission rod to control the extension and retraction of the transmission rod relative to the solenoid valve when the solenoid valve is energized. The transmission rod is configured as the extension and retraction end of the drive unit.

21. A check valve, characterized in that, The check device includes: A pipe, having an inlet and an outlet; The check valve according to any one of claims 1-20 is installed on the pipeline, and the connection port of the check valve can connect the inlet end and the outlet end.

22. An electrical appliance, characterized in that, The electrical equipment includes the check device as described in claim 21.

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