CN217130394U - Water hammer-proof valve core and water hammer-proof switch valve - Google Patents

Abstract

The utility model belongs to the technical field of the case technique and specifically relates to a waterproof hammer case and waterproof hammer ooff valve are related to. The utility model provides a waterproof hammer case, it includes: the valve base is provided with a water outlet channel; the switch part comprises a guide part and an elastic deformation part; the guide part is configured to be capable of moving along the axial direction of the water outlet channel so as to adjust the water passing area of the water outlet channel; the elastic deformation portion is connected with the pilot portion, and the elastic deformation portion includes sealed boss and the sealed terminal surface portion that integrated into one piece set up, and sealed boss is configured to can contact and can be extruded deformation with the inner wall of delivery channel under the drive of pilot portion, and sealed terminal surface portion is configured to can with delivery channel's delivery port terminal surface looks butt under the drive of pilot portion. The water hammer prevention switch valve comprises the water hammer prevention valve core. The utility model discloses can prolong and close the water time, can weaken or avoid closing the water hammer phenomenon that the water produced in the twinkling of an eye.

Description

Water hammer-proof valve core and water hammer-proof switch valve

Technical Field

The utility model belongs to the technical field of the case technique and specifically relates to a waterproof hammer case and waterproof hammer ooff valve are related to.

Background

The water hammer refers to a phenomenon that large pressure fluctuation is caused and vibration is caused due to rapid change of fluid flow in a closed pipeline system. Various water hammer preventing structures are provided for weakening or preventing the water hammer phenomenon, and the inventor finds that the adopted water hammer preventing structure has a fast changing speed when the water passing area of the water is reduced, and the effect of the water hammer preventing structure is not ideal.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a waterproof hammer case and waterproof hammer ooff valve to alleviate the crossing water area that exists among the prior art when reducing the play water, the very fast technical problem of speed of change.

The utility model provides a waterproof hammer case, it includes:

a valve base having a water outlet passage; and

the switch part comprises a guide part and an elastic deformation part, and the guide part is configured to move along the axial direction of the water outlet channel so as to adjust the water passing area of the water outlet channel; the elastic deformation portion is connected with the pilot portion, the elastic deformation portion comprises a sealing boss and a sealing end face portion, the sealing boss and the sealing end face portion are integrally formed, the sealing boss is configured to be capable of being in contact with the inner wall of the water outlet channel under the driving of the pilot portion and capable of being extruded and deformed, and the sealing end face portion is configured to be capable of being abutted to the water outlet end face of the water outlet channel under the driving of the pilot portion.

In any one of the above technical solutions, the elastic deformation portion is connected to the pilot portion through a concave-convex structure.

In any of the above aspects, the pilot portion comprises an insertion tube configured to be insertable into the outlet passage; the sealing boss is sleeved on the insertion pipe, and a radial gap is formed between the sealing boss and the insertion pipe, so that the radial gap can be reduced when the sealing boss is extruded and deformed.

In any one of the above technical solutions, the elastic deformation portion further includes an axial portion, the axial portion is connected with the sealing end face portion, a convex rib is arranged on the inner side wall of the axial portion, the guide portion further includes a side wall structure, the side wall structure is connected with the insertion tube, a clamping groove matched with the convex rib is arranged on the outer surface of the side wall structure, and the clamping groove and the convex rib are used for forming the concave-convex structure.

In any one of the above technical solutions, the valve core of the waterproof hammer further includes a driving mechanism, the valve base has a water inlet channel, and the driving mechanism is configured to enable the switch portion to have an open state in which the water inlet channel is communicated with the water outlet of the water outlet channel, and a closed state in which the water inlet channel is disconnected from the water outlet of the water outlet channel.

In any one of the above technical solutions, the valve core of the waterproof hammer further includes an intermediate seat, the pilot portion and the intermediate seat define a pressure relief cavity, the pilot portion has a pressure relief hole and a water inlet hole, the water inlet hole is communicated with the water inlet channel, a descaling element is disposed in the water inlet hole, and the descaling element is configured to be capable of moving in an axial direction of the water inlet hole relative to the water inlet hole; the driving mechanism is also configured to be capable of blocking the opening of the pressure relief hole in the closed state.

In any one of the above technical solutions, the pressure release chamber is provided with a first spring, the descaling part is of a cylindrical structure, the cylindrical structure is connected with the first spring, and when the first spring deforms, the descaling part can move relative to the water inlet.

In any one of the above technical solutions, the driving mechanism includes a pressing handle, a ratchet mechanism, a lifting assembly, a second spring and a third spring, the ratchet mechanism is matched with the second spring to enable the pressing handle to have a rebound state and a limit state, one end of the third spring is abutted against the pressing handle, and the other end of the third spring is limited on the lifting assembly; the lifting assembly is configured to be capable of plugging the orifice of the pressure relief hole and driving the guide portion to move towards the direction of the water outlet end face of the water outlet channel under the action of the third spring when the pressing handle is switched from the rebound state to the limiting state.

In any one of the above technical solutions, the pressing handle has a hanging groove structure, the lifting assembly includes a lifting rod and a movable shaft, the lifting rod has a supporting step, and the other end of the third spring abuts against the supporting step; one end of the lifting rod is connected with one end of the movable shaft, and the other end of the movable shaft is provided with a sealing sleeve which can plug the orifice of the pressure relief hole; the other end of the lifting rod is provided with a hanging platform structure, and the hanging platform structure is limited in the hanging groove structure, so that the lifting rod and the pressing handle are circumferentially fixed.

The utility model also provides a waterproof hammer ooff valve, it includes waterproof hammer case.

The beneficial effects of the utility model mainly lie in:

the utility model provides a waterproof hammer case, it includes: the valve comprises a valve base and a switching part, wherein the switching part comprises a guide part and an elastic deformation part; the valve base is provided with a water outlet channel; the switch portion includes: the guide part is configured to be capable of moving along the axial direction of the water outlet channel so as to adjust the water passing area of the water outlet channel; the elastic deformation portion is connected with the pilot portion, and the elastic deformation portion includes sealed boss and the sealed terminal surface portion that integrated into one piece set up, sealed boss is configured to can with under the drive of pilot portion the inner wall of outlet channel contacts and can by extrusion deformation, sealed terminal surface portion is configured to can with under the drive of pilot portion the delivery port terminal surface looks butt of outlet channel. By adopting the elastic deformation part, on one hand, the sealing performance between the pilot part and the water outlet of the water outlet channel can be improved when the water is shut off, and on the other hand, when the pilot part moves to the water outlet of the water outlet channel, the elastic deformation part is driven to move, so that the sealing boss is gradually contacted with the inner wall of the water outlet channel and is extruded and deformed, thus the slow water shut-off can be realized, and the water passing area is gradually reduced; finally, after the sealing end face part is abutted to the water outlet end face of the water outlet channel, the water outlet end face can also enable the elastic deformation part to deform, so that water outlet closing is realized, the inner wall (namely the side face) sealing of the water outlet channel is realized firstly, the slow water closing of the sealing of the water outlet end face of the water outlet channel is realized finally, the water closing time is prolonged, the buffer effect is good, and the water hammer phenomenon caused by instantaneous water closing can be weakened or avoided.

The utility model also provides a waterproof hammer ooff valve can prolong and close the water time, can weaken or avoid closing the water hammer phenomenon that the water produced in the twinkling of an eye.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a valve core of a waterproof hammer in an embodiment of the present invention;

fig. 2 is a sectional view of the valve core of the water hammer in the embodiment of the present invention;

fig. 3 is an exploded view of a portion of the valve cartridge of the water hammer in an embodiment of the present invention;

fig. 4 is an exploded view of another portion of the valve cartridge of the water hammer in an embodiment of the present invention;

fig. 5 is a schematic structural view of the pressing handle in the embodiment of the present invention;

fig. 6 is a schematic structural view of a rotary ratchet according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a lifting rod in an embodiment of the present invention;

FIG. 8 is a schematic structural view of the embodiment of the present invention in which the water outlet channel, the pilot portion and the elastic deformation portion are engaged with each other;

fig. 9 is a schematic view of the valve core of the water hammer in the embodiment of the present invention in the water-boiling state;

fig. 10 is a process diagram of switching the pressing handle from the high position to the low position when the switch portion is switched from the open state to the closed state according to the embodiment of the present invention;

fig. 11 is a schematic diagram of a water shutoff process of the valve core of the water hammer according to the embodiment of the present invention;

fig. 12 is a schematic view of the valve core of the water hammer in the water-off state according to the embodiment of the present invention;

fig. 13 is a process diagram of the embodiment of the present invention, in which the pressing handle is switched from the low position to the high position when the switch portion is switched from the closed state to the open state.

Icon: 100-a valve base; 101-a water outlet channel; 102-a water outlet; 103-inner wall; 104-water outlet end face; 105-a water inlet channel; 106-a filter screen; 107-first O-ring; 108-a second O-ring; 109-sealing bosses; 110-sealing end face portions; 111-an insertion tube; 112-radial clearance; 113-inclined plane; 114-an axial portion; 115-convex ribs; 116-side wall structures; 117-card slot; 118-panel section; 119-a curved portion; 120-a snap-fit portion; 121-a middle seat; 122-a pressure relief cavity; 123-pressure relief holes; 124-water inlet hole; 125-a descaling part; 126-large diameter section; 127-small diameter part; 128-a first spring; 129-pressing the handle; 130-a second spring; 131-a third spring; 132-a hollow lumen; 133-convex rib hook; 134-first ratchet ramp; 136-a rotating ratchet; 137-second ratchet ramp; 138-third ratchet ramp; 139-sliding groove; 140-an extension; 141-hanging groove structure; 142-a lifting rod; 143-a movable shaft; 144-support step; 145-sealing sleeve; 146-a hanging platform structure; 147-buckling; 148-a third O-ring; 149-clamp hole; 150-clamping table; 151-outer boss; 152-an inner chute; 153-upper cover; 154-a pilot section; 155-elastic deformation portion; 156-gland screw.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

In the description of the present invention, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description of the present invention, reference to the terms "one embodiment," "some embodiments," "specific embodiments," or the like, as used herein, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Referring to fig. 1 to 13, the present embodiment provides a valve core of a water hammer, including: a valve base 100 and a switch part, the valve base having a water outlet passage 101; the switch portion includes a pilot portion 154 and an elastic deformation portion 155; the pilot part 154 is configured to be movable in the axial direction of the outlet passage 101 to adjust the water passing area of the outlet 102 of the outlet passage 101; the elastic deformation portion is connected with the pilot portion, and the elastic deformation portion includes sealing boss 109 and sealing end face portion 110 that integrated into one piece set up, and sealing boss 109 is configured to can contact with the inner wall of water outlet channel 101 and can be by extrusion deformation under the drive of pilot portion 154, and sealing end face portion 110 is configured to can with the delivery port end face looks butt of water outlet channel 101 under the drive of pilot portion 154. The sealing boss 109 gradually contacts with the radial inner wall 103 of the water outlet channel 101, and thus is gradually closed along the radial direction of the water outlet 102 of the water outlet channel 101, so that the radial water accumulation area is reduced, the sealing end surface part 110 can seal the axial direction of the water outlet channel 101, and water shutoff, namely the disconnection between the water inlet channel 105 and the water outlet channel 101, is realized.

In some embodiments, the valve base further has a water inlet channel 105, a filter screen 106 is sleeved on the valve base, the water outlet channel 101 is formed by a tubular structure, the water inlet channel 105 is located outside the tubular structure, and thus the water flows from the water inlet channel 105 to the water outlet 102 of the water outlet channel 101. The cover is equipped with filter screen 106 on the valve base, can advance to strain water, and this kind of water filters through filter screen 106 earlier, flows to outlet channel 101 through inhalant canal 105 again, can reduce like this and produce the incrustation scale or get into debris in inhalant canal 105 and the outlet channel 101, influences the work of switch portion. A first O-shaped ring 107 and a second O-shaped ring 108 are further sleeved on the valve base; the first O-ring 107 is positioned above the second O-ring 108, and the filter screen 106 is positioned between the first O-ring 107 and the second O-ring 108, so that when the waterproof hammer valve core is installed in the valve housing of the waterproof hammer switch valve, water leakage can be avoided. The elastic deformation part is sleeved on the pilot part, so that the elastic deformation part can move along with the pilot part.

In one embodiment, the elastic deformation part is arranged in a leather cup form, so that the deformation can be better realized; the elastic deformation portion may be provided with another elastic structure to seal the water outlet 102 and the water outlet end surface 104 of the water outlet passage 101.

In at least one embodiment, the waterproof hammer valve core adopts the elastic deformation part, so that when water is shut off, the sealing performance between the pilot part and the water outlet 102 of the water outlet channel 101 can be improved, and when the pilot part moves towards the water outlet 102 of the water outlet channel 101, the elastic deformation part is driven to move, so that the elastic deformation part is gradually contacted with the inner wall 103 of the water outlet channel 101 and is extruded and deformed, and thus, slow water shut-off can be realized, and the water passing area is gradually reduced; finally, after the elastic deformation part abuts against the water outlet end face 104 of the water outlet channel 101, the water outlet end face 104 can also enable the elastic deformation part to deform, so that water outlet closing is realized, sealing on the inner wall 103 (namely the side face) of the water outlet channel 101 is realized firstly, and slow water closing for sealing the water outlet end face 104 of the water outlet channel 101 is realized finally, so that the water closing time is prolonged, and therefore the buffer effect is good, and the water hammer phenomenon caused by instant water closing can be weakened or avoided.

In some embodiments, the elastic deformation part and the pilot part are connected through a concave-convex structure; the stability that elastic deformation portion and guide portion are connected after establishing is realized through concave-convex structure.

In one embodiment, the sealing boss 109 is annular, and the sealing boss 109 is connected to the underside of the sealing end face portion 110. The sealing boss 109 and the sealing end surface portion 110 are of an integral structure, so that the service life is ensured, and the radial water passing area can be well reduced. It should be noted that the sealing boss 109 may also be provided in the form of a circular truncated cone having an axial through hole.

In one embodiment, the pilot portion includes an insertion tube 111, the insertion tube 111 being configured to be insertable into the outlet passage 101; the sealing boss 109 is sleeved on the insertion tube 111, and a radial gap 112 is formed between the sealing boss 109 and the insertion tube 111, so that the radial gap 112 can be reduced when the sealing boss 109 is pressed and deformed. Therefore, the radial water passing area can be gradually reduced, the water closing time is prolonged, and a better water hammer preventing effect is achieved.

In one embodiment, the nozzle of the end of the insertion tube 111 has a chamfer, i.e. has an inclined surface 113, so that the end of the insertion tube 111 is in a truncated cone shape, thus when the insertion tube 111 is inserted into the water outlet channel 101, the radial water passing area can be gradually reduced. The lower edge of the sealing boss 109 is not lower than the upper edge of the inclined surface 113, so that the radial water passing area can be reduced gradually.

Referring to fig. 8, in some embodiments, the elastic deformation portion further includes an axial portion 114, the axial portion 114 is connected to the sealing end surface portion 110, a rib 115 is disposed on an inner side wall of the axial portion 114, the pilot portion further includes a side wall structure 116, the side wall structure 116 is connected to the insertion tube 111, a locking groove 117 is disposed on an outer surface of the side wall structure 116, and the locking groove 117 and the rib are configured to form a concave-convex structure. The stability of connection between the elastic deformation part and the pilot part can be better realized through the matching of the convex rib and the clamping groove 117.

In one embodiment, the axial portion 114 and the seal boss 109 are located on opposite sides of the seal end face portion 110. The pilot section further includes a panel portion 118, and the side gusset structures 116 and the insert tube 111 are located on opposite sides of the panel portion 118. The side gusset structure 116 is connected to the insert tube 111 by a panel portion 118.

In some embodiments, the elastically deformable portion further includes a curved portion 119 connected to one side of the axial portion 114 and an engaging portion 120 connected to the other side of the curved portion 119, the curved portion 119 being deformable to follow the movement of the pilot portion when the pilot portion moves. Illustratively, the bend 119 is U-shaped.

In some embodiments, the valve core of the waterproof hammer further includes an intermediate seat 121, the intermediate seat 121 and the valve base are both provided with a limiting half groove, and the engaging portion 120 is limited in a limiting clamping groove formed by splicing the limiting half groove of the intermediate seat 121 and the limiting half groove of the valve base, so that when the pilot portion moves, the bending portion 119 of the elastic deformation portion is driven to move and deform, and the engaging portion 120 does not move along with the pilot portion and plays a role in sealing.

In some embodiments, the water hammer resistant cartridge further comprises a drive mechanism configured to cause the switch portion to have an open state in which the inlet channel 105 is in communication with the outlet 102 of the outlet channel 101, and a closed state in which the inlet channel 105 is disconnected from the outlet 102 of the outlet channel 101. The driving mechanism is convenient to operate by the switch part, so that the switch part is switched between an opening state and a closing state, and the functions of boiling water and shutting off water are realized.

In some embodiments, the pilot part and the middle seat 121 define a pressure relief cavity 122, the pilot part has a pressure relief hole 123 and a water inlet hole 124, the water inlet hole 124 is communicated with the water inlet channel 105, a descaling part 125 is arranged in the water inlet hole 124, and the descaling part 125 is configured to move relative to the water inlet hole 124 along the axial direction of the water inlet hole 124; the drive mechanism is also configured to be able to block the orifice of the pressure relief hole 123 when in the closed state. The bend 119 also acts as a seal to prevent water entering through the water inlet channel 105 from flowing from the upper edge of the guide's side gusset 116 into the pressure relief cavity 122. The pressure relief hole 123 facilitates pressure relief, and the water inlet hole 124 enables water flowing out of the water inlet channel 105 to enter the pressure relief cavity 122 through the water inlet hole 124.

In one embodiment, the pressure relief vent 123 is located in the middle of the panel portion 118 and the water inlet vent 124 is located in a non-central location of the panel portion 118. The descaling part 125 can clean the water inlet 124 to prevent the water inlet 124 from being blocked. In use, the inlet opening 124 moves relative to the scale removing element 125 because the pilot portion is driven by the driving mechanism to move along the axial direction of the outlet passage 101. The pressure release hole 123 has at least a large diameter portion 126 and a small diameter portion 127, and the large diameter portion 126 and the small diameter portion 127 are communicated with each other through a tapered portion, so that the water in the pressure release chamber 122 passes through the small diameter portion 127 and the large diameter portion 126 in sequence and flows into the water outlet passage 101. The diameter of the large diameter portion 126 is larger than that of the small diameter portion 127.

In one embodiment, the first spring 128 is installed in the pressure release chamber 122, the scale removing member 125 is a cylindrical structure, one end of the cylindrical structure is fixedly connected to the first spring 128, and when the first spring 128 deforms, the scale removing member 125 can move relative to the water inlet 124, so as to prevent the water inlet 124 from being blocked.

In some other embodiments, one end of the first spring 128 is fixedly connected to the intermediate seat 121, and the other end of the first spring 128 is fixedly connected to the pilot portion, so that when the driving mechanism does not apply a force to the pilot portion, the first spring 128 can pull back the pilot portion, and the water inlet passage 105 and the water outlet passage 101 can be communicated with each other by engaging with the elastic deformation portion.

In some embodiments, the diameter of the columnar structure is smaller than the diameter of the inlet opening 124, which facilitates water flow into the pressure relief cavity 122.

In some embodiments, the driving mechanism comprises a pressing handle 129, a ratchet mechanism, a pulling assembly, a second spring 130 and a third spring 131, the ratchet mechanism cooperates with the second spring 130 to make the pressing handle 129 have a rebound state and a limit state, one end of the third spring 131 abuts against the pressing handle 129, and the other end of the third spring 131 is limited on the pulling assembly; the lifting assembly is configured to be capable of plugging the opening of the pressure relief hole 123 and driving the guide portion to move toward the direction of the water outlet end face 104 of the water outlet channel 101 under the action of the third spring 131 when the pressing handle 129 is switched from the rebound state to the limit state. The pulling assembly can be lifted or dropped by pressing through the ratchet mechanism in cooperation with the pressing handle 129 to achieve communication or disconnection between the water inlet passage 105 and the water outlet passage 101. The second spring 130 provides an elastic force for switching the high position and the low position of the pressing handle 129. The third spring 131 provides the force for the pulling assembly to close off the pressure relief vent 123.

Referring to fig. 5 and 6, in one embodiment, the pressing handle 129 includes a hollow inner cavity 132, a plurality of rib hooks 133 having an inclined surface are disposed on an inner wall of the hollow inner cavity 132, and the plurality of rib hooks 133 are disposed along a circumferential direction of the hollow inner cavity 132; a first ratchet inclined plane 134 is arranged above the rib hook 133, and a hanging groove structure 141 is arranged above the first ratchet inclined plane 134, so that the pressing handle 129 has the hanging groove structure 141; the ratchet mechanism comprises a rotating ratchet wheel 136, the rotating ratchet wheel 136 has a second ratchet wheel slope 137 and a third ratchet wheel slope 138, the second ratchet wheel slope 137 is located above the third ratchet wheel slope 138; the rotating ratchet 136 has an axial cavity; the circumferential surface of the rotating ratchet wheel 136 is provided with a plurality of sliding grooves 139, the sliding grooves 139 are arranged at equal central angles, the sliding grooves 139 provide a vertical moving space for the rib hook 133, so that the rib hook 133 can move along the sliding grooves 139 to switch the pressing handle 129 between a high position and a low position, and when the pressing handle 129 is at the low position, the pressing handle 129 is in a limiting state; when the push knob 129 is in the high position, the push knob 129 is in a rebound state. The ratchet mechanism further includes a rib hook 133 and a first ratchet ramp 134. The middle seat 121 is provided with a protruding portion 140, the protruding portion 140 is provided with a shoulder, the rotating ratchet 136 is sleeved on the protruding portion 140, and the rotating ratchet 136 is limited above the shoulder, so that the rotating ratchet 136 can rotate relative to the axis of the protruding portion 140. The extension 140 has a threaded bore in which a gland screw 156 is mounted to retain the rotational ratchet 136 on the extension 140.

Referring to fig. 2 and 7, in some embodiments, the lifting assembly includes a lifting rod 142 and a movable shaft 143, the lifting rod 142 has a supporting step 144, and the other end of the third spring 131 abuts against the supporting step 144; one end of the lifting rod 142 is connected with one end of the movable shaft 143, the other end of the movable shaft 143 is provided with a sealing sleeve 145, and the sealing sleeve 145 can seal the orifice of the pressure relief hole 123; the other end of the lifting rod 142 is provided with a hanging platform structure 146, the hanging platform structure 146 is limited in the hanging groove structure 141, so that the lifting rod 142 and the pressing handle 129 are circumferentially fixed, when the closed state is converted into the open state, the pressing handle 129 rebounds to switch from a low position to a high position, and the hanging groove structure 141 of the pressing handle 129 is contacted with the hanging platform structure 146, so that the lifting rod 142 can move upwards.

When the water is boiled, that is, when the switch part is turned on, the second spring 130 pushes the pressing handle 129 to move upwards, the hanging groove structure 141 on the pressing handle 129 is contacted with the hanging platform structure 146, the lifting rod 142 is pulled to move upwards, the pressure relief hole 123 is opened, and the water path is opened. When water is shut off, namely when the switch part is closed, the pressing handle 129 overcomes the force of the second spring 130 to move downwards under the action of manual pressing force or other non-manual pressing force, the pressing handle 129 is limited on the rotating ratchet wheel 136 at a low position, at the moment, the hanging platform structure 146 of the lifting rod 142 is separated from the hanging groove structure 141 on the pressing handle 129, the third spring 131 abuts against the supporting step 144 of the lifting rod 142, so that the movable shaft 143 is pushed to move downwards, the pressure relief hole 123 is closed, and the valve core of the waterproof hammer is closed.

In one embodiment, the lifting rod 142 is inserted into the movable shaft 143 and fixed by a snap 147. The bottom of the threaded bore of the extension 140 has a stepped bore in which is mounted a third O-ring 148. The gland screw is sleeved on the movable shaft 143 in a hollow way. A third O-ring 148 is provided on the movable shaft 143. The upper end of the second spring 130 abuts against the pressing handle 129, and the lower end of the second spring 130 abuts against the cover screw.

It should be noted that the lifting rod 142 and the movable shaft 143 may also be fixedly connected by a threaded connection.

In some embodiments, the water hammer prevention valve core further comprises an upper cover 153, the upper cover is connected with the valve base in a clamping mode, in one embodiment, a clamping hole 149 is formed in the circumferential direction of the upper cover, a clamping table 150 is formed in the circumferential direction of the valve base, and the clamping table 150 is limited in the clamping hole 149, so that the upper cover is connected with the valve base in a clamping mode. After the upper cover is connected with the valve base in a clamping manner, the switch part, the middle seat 121, the guide part and the elastic deformation part are limited in an installation cavity formed by the upper cover and the valve base. The middle seat 121 is limited and fixed in the installation cavity through the upper cover and the valve base, an upper cavity is formed between the middle seat 121 and the upper cover, and the rotary ratchet wheel 136 and the pressing handle 129 are positioned in the upper cavity. The pressing handle 129 is switched between a high position and a low position through the ratchet mechanism, when the pressing handle 129 is positioned at the low position, the pressing handle 129 is limited on the rotating ratchet 136, and at the moment, the convex rib hook 133 is abutted against the third ratchet inclined plane 138; when the push handle 129 is at the high position, the push handle 129 is restricted by the upper cover. The upper cover has an inner slide groove 152, the pressing handle has an outer boss 151, and the outer boss of the pressing handle is engaged with the inner slide groove 152 to prevent the pressing handle from rotating when moving up and down.

The utility model discloses at least one embodiment provides a waterproof hammer case, can realize waterproof hammer case and close the water in-process, the area of crossing water reduces gradually, earlier realize sealing up the inner wall 103 (the side promptly) of exhalant canal 101, realize closing water slowly to exhalant canal 101's delivery port terminal surface 104 is sealed at last again, avoid elastic deformation portion and exhalant canal 101's delivery port terminal surface 104 closed closing in the twinkling of an eye, effectively reduce the emergence of water hammer phenomenon, reduce the noise that waterproof hammer case produced because of the water hammer, and increase the life of waterproof hammer case and the product of using this waterproof hammer case. In the water closing process, the sealing boss 109 descends to gradually reduce the water passing gap between the sealing boss 109 and the water outlet 102 of the water outlet channel, so that the water passing area of the water outlet channel is gradually reduced, when the sealing boss 109 on the elastic deformation part enters the water outlet channel, the side edge of the sealing boss 109 can seal the water outlet channel and is extruded and deformed inwards, as the deformation gap (namely the radial gap 112) is arranged between the sealing boss 109 and the pilot part, the sealing boss 109 is easy to deform inwards, the pilot part can continuously descend, and finally the sealing end face part 110 is attached to the water outlet end face 104 of the water outlet channel, so that complete sealing is achieved, water outlet is firstly reduced and then closed, the buffering effect of firstly sealing the side face and then sealing the end face is achieved, and the water hammer phenomenon generated by instant water closing is avoided.

The utility model discloses the theory of operation of the waterproof hammer case that at least one embodiment provided does:

first, as shown in fig. 9 and 10, when water is turned off from boiling water, the switch unit is switched from the on state to the off state:

1. the pressing handle 129 is pressed down, and the convex rib hook 133 of the pressing handle 129 descends along the sliding groove 139 on the rotating ratchet wheel 136 until the convex rib hook 133 is separated from the sliding groove 139;

2. continuing to press the handle 129, the first ratchet wheel inclined plane 134 of the pressing handle 129 pushes the second ratchet wheel inclined plane 137 of the rotating ratchet wheel 136, so that the rotating ratchet wheel 136 rotates for a certain angle; at this time, the convex rib hook 133 on the pressing handle 129 is staggered with the groove of the rotating ratchet wheel 136 by a set angle;

3. when the pressing force is removed, the pressing handle 129 moves upward under the action of the restoring force of the second spring 130, and at this time, the rib hook 133 on the pressing handle 129 is hooked by the third ratchet inclined surface 138 of the rotating ratchet 136, and the pressing handle 129 stops at the low position. At this time, the hanging platform structure 146 of the lifting rod 142 is separated from the hanging groove structure 141 on the pressing handle 129, the lifting rod 142 does not receive the upward pulling force of the pressing handle 129, the movable shaft 143 is pushed to move downwards by the action of the third spring 131, the pressure relief hole 123 on the pilot part is blocked, and the water outlet is closed.

4. At this time, the pressing handle 129 is hung on the rotating ratchet 136, supported by the second spring 130, and is not in a suspended state, so that the pressing handle is not easy to shake.

Referring to fig. 11, 12 and 13, when water is turned off to be boiled, the switch unit is switched from the off state to the on state:

1. the pressing handle 129 is pressed again, and the convex rib hook 133 of the pressing handle 129 is disengaged from the third ratchet inclined surface 138 of the rotating ratchet 136;

2. continuing to press the handle 129, the first ratchet wheel inclined plane 134 on the pressing handle 129 pushes the second ratchet wheel inclined plane 137 of the rotating ratchet wheel 136, so that the rotating ratchet wheel 136 rotates by a certain angle; at this time, the convex rib hook 133 on the pressing handle 129 is staggered with the sliding groove 139 of the rotating ratchet wheel 136 by a set angle;

3. when the pressing force is removed, the pressing handle 129 moves upwards under the action of the reset force of the second spring 130, and the convex rib hook 133 on the pressing handle 129 moves upwards along the sliding groove 139 of the rotating ratchet wheel 136 until the pressing handle 129 is abutted by the upper cover, and the pressing handle 129 stops at a high position. At this time, the hanging platform structure 146 on the lifting rod 142 contacts the hanging groove structure 141 on the pressing handle 129, and under the acting force of the second spring 130, the lifting rod 142 moves upwards along with the pressing handle 129 to drive the movable shaft 143 to move upwards, so that the pressure relief hole 123 on the pilot valve leather cup is opened, and water is discharged.

4. At this time, the pressing handle 129 is supported by the second spring 130 and is not in a suspended state, so that the cover is not easy to shake.

The embodiment also provides a waterproof hammer switch valve, and it includes the valve casing and the waterproof hammer case that this embodiment provided, and the valve base of waterproof hammer case is installed in the valve casing.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. A water hammer resistant cartridge, comprising:

a valve base having a water outlet passage; and

the switch part comprises a guide part and an elastic deformation part, and the guide part is configured to move along the axial direction of the water outlet channel so as to adjust the water passing area of the water outlet channel; the elastic deformation portion is connected with the pilot portion, the elastic deformation portion comprises a sealing boss and a sealing end face portion, the sealing boss and the sealing end face portion are integrally formed, the sealing boss is configured to be capable of being in contact with the inner wall of the water outlet channel under the driving of the pilot portion and capable of being extruded and deformed, and the sealing end face portion is configured to be capable of being abutted to the water outlet end face of the water outlet channel under the driving of the pilot portion.

2. The waterproof hammer valve cartridge of claim 1, wherein the resilient deformation portion and the pilot portion are connected by a concavo-convex structure.

3. The waterproof hammer cartridge of claim 2, wherein the pilot portion includes an insert tube configured to be insertable into the outlet passage; the sealing boss is sleeved on the insertion pipe, and a radial gap is formed between the sealing boss and the insertion pipe, so that the radial gap can be reduced when the sealing boss is extruded and deformed.

4. The waterproof hammer valve element according to claim 3, wherein the elastic deformation portion further comprises an axial portion, the axial portion is connected with the sealing end face portion, a convex rib is arranged on an inner side wall of the axial portion, the pilot portion further comprises a side wall structure, the side wall structure is connected with the insertion tube, a clamping groove matched with the convex rib is formed in an outer surface of the side wall structure, and the clamping groove and the convex rib are used for forming the concave-convex structure.

5. The water hammer resistant cartridge of any one of claims 1-4, further comprising a drive mechanism, the valve base having a water inlet passage, the drive mechanism configured to cause the switch portion to have an open state in which the water inlet passage is in communication with a water outlet of the water outlet passage, and a closed state in which the water inlet passage is disconnected from the water outlet of the water outlet passage.

6. The waterproof hammer cartridge according to claim 5, further comprising an intermediate seat, the pilot portion and the intermediate seat defining a pressure relief chamber, the pilot portion having a pressure relief bore and a water inlet bore, the water inlet bore being in communication with the water inlet passage, the water inlet bore having a scale removal member disposed therein, the scale removal member being configured to be movable relative to the water inlet bore in an axial direction of the water inlet bore; the driving mechanism is also configured to be capable of blocking the opening of the pressure relief hole in the closed state.

7. The valve core of the water hammer according to claim 6, wherein a first spring is installed in the pressure relief cavity, the descaling part is of a cylindrical structure, the cylindrical structure is connected with the first spring, and when the first spring deforms, the descaling part can move relative to the water inlet hole.

8. The water hammer resistant cartridge of claim 6, wherein the driving mechanism includes a pressing handle, a ratchet mechanism, a lifting assembly, a second spring, and a third spring, the ratchet mechanism cooperates with the second spring to cause the pressing handle to have a rebound state and a limit state, one end of the third spring abuts against the pressing handle, and the other end of the third spring is limited on the lifting assembly; the lifting assembly is configured to be capable of plugging the orifice of the pressure relief hole and driving the guide portion to move towards the direction of the water outlet end face of the water outlet channel under the action of the third spring when the pressing handle is switched from the rebound state to the limiting state.

9. The waterproof hammer valve cartridge of claim 8, wherein the pressing handle has a hanging groove structure, the lifting assembly comprises a lifting rod and a movable shaft, the lifting rod is provided with a supporting step, and the other end of the third spring abuts against the supporting step; one end of the lifting rod is connected with one end of the movable shaft, and the other end of the movable shaft is provided with a sealing sleeve which can plug the orifice of the pressure relief hole; the other end of the lifting rod is provided with a hanging platform structure, and the hanging platform structure is limited in the hanging groove structure, so that the lifting rod and the pressing handle are circumferentially fixed.

10. A water hammer resistant on-off valve comprising the water hammer resistant cartridge of any one of claims 1-9.

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