A pilot valve

Abstract

The present invention discloses a pilot valve, comprising a main body, wherein a water inlet and a water outlet are arranged in the main body, a movable water blocking member is arranged between the water inlet and the water outlet, an elastic member, a first water through hole and a second water through hole are arranged on the water blocking member, a water storage chamber is arranged between the first water through hole and the second water through hole, the water blocking member is also cooperated with and connected to a sealing member, a third water through hole which can communicate with the second water through hole is arranged on the sealing member, the third water through hole is also communicated with the water outlet, the sealing member is also cooperated with and connected to a control member, a first spring is arranged between the control member and the sealing member, a high step surface and a low step surface are arranged on the control member, the control member is also cooperated with and connected to a knob, the knob is provided with ribs which can cooperate with the high step surface or the low step surface, and the present invention reduces the force applied by the user when switching the knob through the design of the above structure.

Description

Technical Field

[0001] The invention relates to a pilot valve. Background Art

[0002] The rotary switches currently on the market use a valve core structure to control the water flow, which feels heavy and is not labor-saving enough. Summary of the invention

[0003] In order to solve the above technical problems, an object of the present invention is to provide a pilot valve, specifically, when a user switches a knob, the switch can be easily achieved without a large force.

[0004] The present invention is achieved through the following technical solutions:

[0005] A pilot valve comprises a main body, wherein a water inlet and a water outlet are arranged in the main body, a movable water blocking member is arranged between the water inlet and the water outlet, an elastic member, a first water through hole and a second water through hole are arranged on the water blocking member, a water storage chamber is arranged between the first water through hole and the second water through hole, the water blocking member is also cooperated with and connected to a sealing member, a third water through hole which can communicate with the second water through hole is arranged on the sealing member, the third water through hole is also communicated with the water outlet, the sealing member is also cooperated with and connected to a control member, a first spring is arranged between the control member and the sealing member, a high step surface and a low step surface are arranged on the control member, the control member is also cooperated with and connected to a knob, and a rib which can cooperate with the high step surface or the low step surface is arranged on the knob.

[0006] In an embodiment of the present invention, the main body is formed by a water-passing body and a fixing member, and the fixing member includes a fixing seat and a guide body. The fixing seat and the guide body are fixed by screws. More specifically, the screws are arranged at the four corners of the fixing member.

[0007] In an embodiment of the present invention, a slot for the knob to cooperate with is provided on the guide body, a plug-in unit for cooperating with the slot is provided on the knob, and a snap ring is provided between the plug-in unit and the slot.

[0008] In an embodiment of the present invention, the water blocking component includes a valve needle cover and a sealing block, the first water hole is arranged on the sealing block, the second water hole is arranged on the valve needle cover, a water storage chamber is formed between the valve needle cover and the sealing block, the elastic component is arranged between the valve needle cover and the sealing block, and the elastic component is provided with a first matching portion that matches the valve needle cover, and a second matching portion that matches the sealing block.

[0009] In the embodiment of the present invention, a flow guide member is further provided between the water blocking member and the body, a fifth sealing ring is provided between the flow guide member and the body, and the flow guide member is also matched and connected with the first matching portion.

[0010] In an embodiment of the present invention, the high step surface and the low step surface on the control member are in a "cross" shape, that is, the high step surface constitutes a "one", and the low step surface constitutes another "one". More specifically, a curved surface is arranged between the high step surface and the low step surface, and transition surfaces are also arranged between the high step surface, the low step surface and the curved surface, that is, a sink groove is formed between the transition surface and the high step surface and the low step surface.

[0011] In an embodiment of the present invention, a groove is provided on the control member, and the groove allows the sealing member to move inside the groove.

[0012] In an embodiment of the present invention, a first sealing ring capable of contacting the inner wall of the groove is arranged on the sealing member, and a second sealing ring is arranged between the control member and the body.

[0013] In an embodiment of the present invention, a fourth water hole is further provided on the water blocking member, and the water outlet of the fourth water hole is provided at the side end of the water blocking member, specifically the side end of the valve needle cover, one end of the fourth water hole is communicated with the third water hole, and the other end of the fourth water hole is communicated with the water outlet.

[0014] In the embodiment of the present invention, there is a gap between the sealing member and the body, the gap constitutes a first water passage, one end of the first water passage is communicated with the second water hole, and the other end of the first water passage is communicated with the third water hole.

[0015] In the embodiment of the present invention, a third sealing ring is provided between the sealing member and the water blocking member, and the third sealing ring prevents the water flowing into the fourth water passing hole from leaking.

[0016] In an embodiment of the present invention, a fourth sealing ring is arranged between the water blocking member and the body, and the arrangement of the fourth sealing ring and the third sealing ring prevents leakage of water flowing out of the second water outlet.

[0017] In the embodiment of the present invention, a second water passage is provided on the guide member, one end of the second water passage is communicated with the fourth water hole, and the other end of the second water passage is communicated with the water outlet.

[0018] In the embodiment of the present invention, a second spring is arranged in the water storage chamber.

[0019] A pilot valve of the present invention has the following beneficial effects:

[0020] 1. It is equipped with water blocking parts, sealing parts and control parts, avoiding the valve core structure and greatly reducing the production cost.

[0021] 2. A knob is provided, and a high step surface and a low step surface are provided on the knob. A cambered surface is provided between the high step surface and the low step surface. The setting of the cambered surface reduces the force when switching the knob.

[0022] 3. A first spring and a water blocking member are provided, and the provision of the first spring and the water blocking member also reduces the force applied when the knob is switched. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is an exploded view of the present invention.

[0025] Figure 2 It is a perspective view of the present invention.

[0026] Figure 3 It is a cross-sectional view of the present invention.

[0027] Figure 4 Schematic diagram of the knob of the present invention.

[0028] Figure 5 It is a schematic diagram of the control element of the present invention.

[0029] Figure 6 Schematic diagram of the seal of the present invention.

[0030] Figure 7 Schematic diagram of the valve needle cover of the present invention.

[0031] Figure 8 It is a cross-sectional view of the valve needle cover of the present invention.

[0032] Fig. 9 Schematic diagram of the flow guide of the present invention.

[0033] Fig.10 It is a schematic diagram of the waterway opening of the present invention.

[0034] Fig.11 It is a schematic diagram of a waterway obstruction of the present invention.

[0035] In the figure: 10-body; 11-water inlet; 12-water outlet; 13-water body; 14-fixing member; 15-fixing seat; 16-guide body; 16a-slot; 17-screw; 18-connecting channel; 20-water blocking member; 21-first water hole; 22-second water hole; 23-elastic member; 23a-first matching part; 23b-second matching part; 24-fourth water hole; 25-water storage chamber; 26-valve needle cover; 26a-fixing needle; 27-sealing block; 30-sealing Seal; 33-third water hole; 40-control part; 41-high step surface; 42-low step surface; 43-radian surface; 44-transition surface; 45-groove; 51-first spring; 52-second spring; 60-knob; 60a-plug-in; 61-rib; 70-clamp ring; 80-flow guide; 82-second water channel; 91-first sealing ring; 92-second sealing ring; 93-third sealing ring; 94-fourth sealing ring; 95-fifth sealing ring; 101-first water channel; DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0037] Referring to the drawings of the specification, a pilot valve comprises a body (10), wherein a water inlet (11) and a water outlet (12) are arranged in the body (10), a movable water blocking member (20) is arranged between the water inlet (11) and the water outlet (12), the water blocking member (20) is provided with an elastic member (23), a first water through hole (21) and a second water through hole (22), a water storage chamber (25) is arranged between the first water through hole (21) and the second water through hole (22), the water blocking member (20) is also connected with a sealing member (30), the sealing member (30) is provided with a third water through hole (33) which can communicate with the second water through hole (22), the third water through hole (33) is also connected with the outlet (22). The water channel (12) is communicated with each other, the sealing member (30) is also connected to a control member (40), a first spring (51) is arranged between the control member (40) and the sealing member (30), a high step surface (41) and a low step surface (42) are arranged on the control member (40), the control member (40) is also connected to a knob (60), and a rib (61) that can cooperate with the high step surface (41) or the low step surface (42) is arranged on the knob (60). The present invention realizes the open and closed states of the water channel through the above structure. When the rib (61) contacts the high step surface (41), the water channel is in an open state; when the rib (61) contacts the low step surface (42), the water channel is in a closed state.

[0038] Furthermore, the main body (10) is formed by a water-passing body (13) and a fixing member (14) being connected in cooperation, and the fixing member (14) further comprises a fixing seat (15) and a guide body (16), and the fixing seat (15) and the guide body (16) are fixed by screws (17), and more specifically, the screws (17) are arranged at four corners of the fixing member (14). The fixing seat (15) realizes radial position limiting of the water blocking member (20), and the guide body (16) realizes radial position limiting of the sealing member (30).

[0039] Furthermore, the guide body (16) is provided with a slot (16a) for the knob (60) to cooperate with, the knob (60) is provided with a plug-in (60a) that cooperates with the slot (16a), and a retaining ring (70) is provided between the plug-in (60a) and the slot (16a), and the retaining ring (70) realizes radial fixation of the knob (60).

[0040] Furthermore, the water blocking member (20) comprises a valve needle cover (26) and a sealing block (27), the first water passage hole (21) being arranged on the sealing block (27), the second water passage hole (22) being arranged on the valve needle cover (26), a water storage chamber (25) being formed between the valve needle cover (26) and the sealing block (27), the elastic member (23) being arranged between the valve needle cover (26) and the sealing block (27), the elastic member (23) being provided with a first matching portion (23a) matching with the valve needle cover (26), and a second matching portion (23b) matching with the sealing block (27). The purpose of setting the elastic member (23) is that when the third water passage hole (33) does not pass water, the water flow that originally passes through the water storage chamber (25) to enter the third water passage hole (33) will flow back, thereby applying a downward pressure to the sealing block (27). The setting of the elastic member (23) enables the sealing block (27) to achieve a displacement in the same direction as the pressure when it is subjected to pressure, so that the sealing block (27) closes the connecting channel (18) between the water inlet (11) and the water outlet (12).

[0041] Furthermore, the valve needle cover (26) is also provided with a fixing needle (26a) that matches the first water passage hole (21).

[0042] Furthermore, a flow guide (80) is provided between the water blocking member (20) and the main body (10), a fifth sealing ring (95) is provided between the flow guide (80) and the main body (10), and the flow guide (80) is also connected in a matching manner with the first matching portion (23a).

[0043] Furthermore, the high step surface (41) and the low step surface (42) on the control member (40) are in a "cross" shape, that is, the high step surface (41) forms a "one", and the low step surface (42) forms another "one". More specifically, a camber surface (43) is provided between the high step surface (41) and the low step surface (42), and a transition surface (44) is also provided between the high step surface (41), the low step surface (42) and the camber surface (43), that is, a sink groove is formed between the transition surface (44) and the high step surface (41) and the low step surface (42).

[0044] Furthermore, the control member (40) is provided with a groove (45), and the groove (45) allows the sealing member (30) to move inside the groove. More specifically, when the rib (61) contacts the high step surface (41), the sealing member (30) and the groove (45) are completely fitted together, and the third water passage hole (33) does not pass water. When the rib (61) contacts the low step surface (42), the sealing member (30) and the groove (45) are not completely fitted together, and the third water passage hole (33) passes water, and the water path is opened.

[0045] Furthermore, the sealing member (30) is provided with a first sealing ring (91) capable of contacting the inner wall of the groove (45). When the first sealing ring (91) contacts the inner wall of the groove (45), water cannot flow through the third water hole (33); when the first sealing ring (91) does not contact the inner wall of the groove (45), water can flow through the third water hole (33). A second sealing ring (92) is provided between the control member (40) and the body (10). More specifically, the second sealing ring (92) is provided between the control member (40) and the guide body (16).

[0046] Furthermore, a fourth water hole (24) is provided on the water blocking member (20), and a water outlet of the fourth water hole (24) is provided at a side end of the water blocking member (20), specifically, at a side end of the valve needle cover (26), and one end of the fourth water hole (24) is communicated with the third water hole (33), and the other end of the fourth water hole (24) is communicated with the water outlet (12).

[0047] Furthermore, there is a gap between the sealing member (30) and the body (10), and the gap constitutes a first water passage (101), one end of the first water passage (101) is communicated with the second water passage hole (22), and the other end of the first water passage (101) is communicated with the third water passage hole (33).

[0048] Furthermore, a third sealing ring (93) is provided between the sealing member (30) and the water blocking member (20), and the third sealing ring (93) prevents water flowing into the fourth water passage hole (24) from leaking.

[0049] Furthermore, a fourth sealing ring (94) is provided between the water blocking member (20) and the body (10), and the fourth sealing ring (94) and the third sealing ring (93) are provided to prevent water flowing out of the second water outlet (22) from leaking.

[0050] Furthermore, the guide member (80) is provided with a second water passage (82), one end of the second water passage (82) is communicated with the fourth water hole (24), and the other end of the second water passage (82) is communicated with the water outlet (12).

[0051] Furthermore, a second spring (52) is provided in the water storage chamber (25), and more specifically, the second spring (52) is sleeved on the fixed needle (26a) of the valve needle cover (26). The provision of the second spring (52) better realizes the control of the water blocking member (20) on the opening and closing of the connecting channel (18).

[0052] During use, the user controls whether the water channel is open by rotating the knob (60). When the ribs (61) on the knob (60) are in contact with the high step surface (41) on the control member (40), the water channel is in a closed state. Fig.11 As shown. At this time, the first sealing ring (91) on the sealing member (30) is in contact with the inner wall of the groove (45), and the water flow cannot enter the third water hole (33). The specific flow direction of the water flow is as follows: the water flow from the water inlet (11) into the water body (13) first flows in from the first water hole (21), then enters the water storage chamber (25), then passes through the second water hole (22), and then passes through the first water passage (101). At this time, under the influence of the first sealing ring (91), the water flow cannot enter the third water hole (33), and thus flows back to the water storage chamber (25). The reverse flow of water gives the sealing block (27) a downward pressure, thereby deforming the elastic member (23) and stretching the second spring (52), thereby causing the sealing block (27) to move downward, thereby closing the connecting channel (18). Since the area of ​​the water storage chamber (25) that impacts the sealing block (27) in the reverse direction is larger than the positive area of ​​the sealing block (27), as shown in the attached manual Fig.11 As shown, S1 is greater than S2, so the water flow pressure of the reverse impact is greater than the water flow pressure of the forward impact, so that the sealing block (27) can achieve stable sealing of the connecting channel (18).

[0053] When the user wants to switch to the water flow state, he only needs to rotate the knob (60), and the ribs (61) on the high step surface (41) will move along the transition surface (44) and the curved surface (43) to the low step surface (42). Fig.10As shown. At this time, the control member (40) moves upward under the action of the first spring (51), so that the first sealing ring (91) on the sealing member (30) does not contact the inner wall of the groove (45), so that the water flow can enter the third water hole (33), and the water flow after entering the third water hole (33) flows to the fourth water hole (24) on the valve needle cover (26), and then flows to the second water channel (82), and finally flows out from the outlet (12). Because the water flow can enter the third water hole (33), the backflow phenomenon will not occur in the water storage chamber (25). Under the action of the first spring (51), the second spring (52), and the elastic member (23), the water flow entering the water body (13) can easily push the sealing block (27) upward, thereby opening the connecting channel (18), thereby achieving the water flow effect.

[0054] The above description shows and describes the preferred embodiments of the present invention. As mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A pilot valve, comprising a body, wherein a water inlet and a water outlet are arranged in the body, and a movable water blocking member is arranged between the water inlet and the water outlet. Features: The water blocking member is provided with an elastic member, a first water through hole and a second water through hole, a water storage chamber is provided between the first water through hole and the second water through hole, the water blocking member is also connected with a sealing member, a third water through hole which can communicate with the second water through hole is provided on the sealing member, the third water through hole is also connected with the water outlet, the sealing member is also connected with a control member, a first spring is provided between the control member and the sealing member, a high step surface and a low step surface are provided on the control member, the control member is also connected with a knob, a rib which can cooperate with the high step surface or the low step surface is provided on the knob; an arc surface is provided between the high step surface and the low step surface; a groove is provided on the control member, the groove allows the seal to move inside it; the seal A first sealing ring capable of contacting the inner wall of the groove is provided, and a second sealing ring is provided between the control member and the main body; a fourth water hole is also provided on the water blocking member, and the water outlet of the fourth water hole is provided at the side end of the water blocking member, one end of the fourth water hole is communicated with the third water hole, and the other end of the fourth water hole is communicated with the water outlet; there is a gap between the sealing member and the main body, and the gap constitutes a first water channel, one end of the first water channel is communicated with the second water hole, and the other end of the first water channel is communicated with the third water hole; a flow guide member is also provided between the water blocking member and the main body, and a second water channel is provided on the flow guide member, one end of the second water channel is communicated with the fourth water hole, and the other end of the second water channel is communicated with the water outlet.

2. A pilot valve according to claim 1, Features: A third sealing ring is provided between the sealing member and the water blocking member, and the third sealing ring prevents water flowing into the fourth water passage hole from leaking.

3. A pilot valve according to claim 2, Features: A fourth sealing ring is arranged between the water blocking member and the body, and the arrangement of the fourth sealing ring and the third sealing ring prevents leakage of water flowing out of the second water hole.

4. A pilot valve according to any one of claims 1 to 3, Features: A second spring is arranged in the water storage chamber.

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