Deflation control device for dredger and dredger

Abstract

The utility model belongs to the technical field of dredgers, and particularly relates to a deflation control device for a dredger and the dredger. A dredger comprises a main mounting base with an air inlet cavity and an air bleeding control device, and the air bleeding control device comprises an air bleeding mounting base arranged on the main mounting base and provided with an air bleeding cavity communicated with the air inlet cavity; the deflation valve is mounted in the deflation cavity and used for controlling the piston in the air inlet cavity to move; and the shell is used for being installed on the main installation base and provided with a fixing part for limiting the position of the deflation valve, and after the shell is fixed to the main installation base, the fixing part is used for fixing the deflation valve and preventing the deflation valve from being separated from the deflation cavity. The fixing part is arranged on the inner wall of the shell, the deflation valve can be fixed and prevented from being separated from the deflation cavity through the fixing part, and the fixing structure has the advantages of being low in cost, convenient to install and the like.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of dredger, especially a deflation control device for dredger and dredger. BACKGROUND

[0002] People often appear in daily life sewage pipes, toilet and so on jammed phenomenon, and dredger can help people solve this problem. The existing dredger is usually as in prior art CN218881073U proposed air pressure toilet dredger, the inflator is inflated to the gas storage device through the check valve to form high pressure gas, the deflation control device is used for controlling high pressure gas to release from the plug device of the gas outlet end of the gas storage device, under the impact of powerful high pressure gas, realize the dredging of the sewer or toilet.

[0003] In the above-mentioned disclosed air pressure toilet dredger, the deflation valve of the deflation control device is often installed on the deflation cavity of the main mounting seat by interference fit, the deflation cavity is connected with the air inlet cavity of the main piston and the gas storage cavity of the gas storage device, under the high pressure of the air inlet cavity and the gas storage cavity, the interference fit deflation valve body is prone to loosen or even fall off, thereby causing the air inlet cavity and the gas storage cavity to leak, and high pressure gas cannot be formed in the gas storage device, which seriously affects the service life of the product and increases the cost of after-sales maintenance. SUMMARY

[0004] The utility model aims at providing a deflation control device for dredger and dredger that is stable in installation and reliable in performance.

[0005] The utility model aims at realizing the following:

[0006] The utility model discloses a deflation control device for dredger has such characteristics, include: the deflation mounting seat is set up on the main mounting seat and has the deflation cavity that communicates with the air inlet cavity, the deflation valve is installed in the deflation cavity and is used for controlling the piston movement in the air inlet cavity, and the shell is used for installing on the main mounting seat, and it has the fixed part that limits the position of the deflation valve, when the shell is fixed on the main mounting seat, the fixed part is used for fixing the deflation valve and prevents it from separating from the deflation cavity.

[0007] In the deflation control device for dredger provided by the utility model, the deflation valve body can also have the following characteristics: the deflation valve body has a valve cavity and is arranged in the deflation cavity, and the deflation valve core has a deflation guide rod part extending into the valve cavity and a deflation sealing part arranged in the deflation cavity, and the outer periphery of the deflation guide rod part or the inner wall of the valve cavity is provided with at least one air passage groove for gas to pass through, and the fixed part is used for fixing the deflation valve body and preventing it from separating from the deflation cavity.

[0008] The utility model discloses a defroster is with the device of deflation control, and the device of deflation control comprises the fixed part, the deflation valve body, the deflation cavity, the deflation sealing part and the deflation guide rod part.

[0009] The utility model discloses a defroster is with the device of deflation control, and the device of deflation control comprises the fixed part, the deflation valve body, the deflation cavity, the deflation sealing part and the deflation guide rod part.

[0010] The utility model discloses a defroster is with the device of deflation control, and the device of deflation control comprises the fixed part, the deflation valve body, the deflation cavity, the deflation sealing part and the deflation guide rod part.

[0011] The utility model discloses a defroster is with the device of deflation control, and the device of deflation control comprises the fixed part, the deflation valve body, the deflation cavity, the deflation sealing part and the deflation guide rod part.

[0012] The utility model discloses a defroster is with the device of deflation control, and the device of deflation control comprises the fixed part, the deflation valve body, the deflation cavity, the deflation sealing part and the deflation guide rod part.

[0013] The utility model discloses a defroster is with the device of deflation control, and the device of deflation control comprises the fixed part, the deflation valve body, the deflation cavity, the deflation sealing part and the deflation guide rod part.

[0014] The utility model discloses a defroster is with the device of deflation control, and the device of deflation control comprises the fixed part, the deflation valve body, the deflation cavity, the deflation sealing part and the deflation guide rod part.

[0015] A defroster, comprising a main mounting seat, having an air inlet cavity; a pumping device, arranged on one side of the main mounting seat, having a pumping cavity communicated with the air inlet cavity; a gas storage device, arranged on the other side of the main mounting seat, having a gas storage cavity communicated with the air inlet cavity, a main piston, installed in the air inlet cavity, and used for sealing an air outlet pipe of the gas storage device; and a deflation control device, installed on the main mounting seat; wherein the deflation control device is the deflation control device described above; the deflation mounting seat and the main mounting seat are integrally formed.

[0016] The dredging device provided by the utility model also has the following features: the inflator device comprises:

[0017] The inflator is integrally formed on the main mounting base; the inflating rod is movably arranged in the inflating cavity; and the end cover is arranged at the end of the inflator away from the main mounting base, wherein the shell is sleeved on the outer periphery of the inflator and is fixed between the main mounting base and the end cover.

[0018] The utility model has the following prominent and beneficial technical effects compared with the prior art:

[0019] 1. The fixed part is arranged on the inner wall of the shell, the deflation valve can be fixed by the fixed part and prevented from being separated from the deflation cavity, and the fixed structure has the advantages of low cost and convenient installation.

[0020] 2. The outer wall of the inflator is provided with a guide protrusion, and the inner side of the deflation connecting rod is provided with a guide groove matched with the guide protrusion, so that the deflation connecting rod can move along the length direction of the guide protrusion and offset in the height direction of the guide protrusion, thereby facilitating the inclined movement of the valve core. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structure schematic view of the dredging device of the utility model.

[0022] Figure 2 It is a sectional view of the dredging device of the utility model.

[0023] Figure 3 It is a sectional view of the inflator device of the utility model.

[0024] Figure 4 It is a structure exploded view of the inflator device of the utility model.

[0025] Figure 5 It is a structure schematic view of the inflator device of the utility model.

[0026] Figure 6 It is a sectional view of the inflator device of the utility model.

[0027] Figure 7 It is a structure schematic view of the inflator device of the utility model.

[0028] Meaning represented by the reference signs in the drawing:

[0029] Inflator device 1, gas storage device 2, pressure display device 3, deflation control device 4, inflow one-way valve 5,

[0030] Main piston 10, pump 11, pumping chamber 111, pumping rod 12, rod body 121, pumping piston 122, limit block 123, pumping sealing ring 124, hand holding part 13, fixed seat 131, handle 132, limit hole 133, insertion hole 134, main mounting seat 14, air inlet chamber 141, inner ring wall 142, outer ring wall 143, connecting chamber 144, one-way valve mounting hole 145, positioning protrusion 146, air outlet mounting seat 15, air outlet chamber 151, air outlet 152, end cover 17, inner ring part 171, outer ring part 172, through hole 173, shell 18, fixed part 180, abutting part 181, accommodating groove 182, accommodating hole 1821, pressure scale line 183, positioning groove 184,

[0031] Air cylinder 21, air storage mounting end 211, air outlet 212, air outlet pipe 22, air outlet mounting seat 221, air outlet chamber 23, air storage chamber 24, air outlet nozzle 25, rubber ring 26, air outlet pipe support frame 27, air storage sealing ring 28,

[0032] Pressure mounting seat 31, pressure chamber 311, pressure air port 312, pressure valve core 32, pressure sealing part 321, pressure valve rod part 322, pressure sealing ring 323, pressure valve cover 33, annular pressure cover body 331, outward turned edge 332, pressure reset member 34, air release button 41, air release valve 42, air release connecting rod 43, guide groove 431, guide protrusion 432, insertion end 433, air groove 434, air release valve body 44, air release sealing ring 441, air release valve chamber 442, inner stop edge 444, outer stop edge 445, air release valve core 45, air release guide rod part 451, air release sealing part 452, air passage groove 453, air release sealing member 46, air release elastic member 47. DETAILED DESCRIPTION

[0033] The utility model will be further described in connection with the specific implementation examples as follows:

[0034] It should be understood that the structure, proportion, size and the like shown in the drawings of the embodiments of the present application are only used to cooperate with the content disclosed in the specification, so as to be understood and read by those skilled in the art, and do not have technical substantial significance, and any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application. Meanwhile, the terms such as "inner" and "outer" used in the embodiments of the present application are only for clear description, and do not limit the scope of the present application, and the change or adjustment of the relative relationship, without substantial change of the technical content, is also considered as the scope of the present application.

[0035] When an element is referred to as being "connected", "disposed", "mounted", or "coupled" to another element, it can be directly connected, disposed, mounted, or coupled to the other element or can be indirectly connected, disposed, mounted, or coupled to the other element through an intervening element.

[0036] In addition, the technical solutions among various embodiments can be combined with each other, but it must be based on that a person skilled in the art can realize, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0037] The unclogging device of the embodiment is used for unclogging a toilet or a sewer pipe.

[0038] As shown in Figure 1 and Figure 2 , the unclogging device at least comprises a main mounting base 14, a pumping device 1, a gas storage device 2, an air inlet one-way valve 5, a pressure display device 3, and a gas release control device 4.

[0039] The main mounting base 14 is provided with a one-way valve mounting hole 145, in which the air inlet one-way valve 5 is mounted, the pumping device 1 is provided with a pumping cavity 111, which is communicated with an air inlet end of the air inlet one-way valve 5, the gas storage device 2 is provided with a gas storage cavity 24, which is communicated with an air outlet end of the air inlet one-way valve 5, and the pumping device 1 enters high-pressure gas in the pumping cavity 111 into the gas storage cavity 24 of the gas storage device 2 through the air inlet one-way valve 5. The main mounting base 14 is further provided with a gas release mounting base 15 and a pressure mounting base 31, and is respectively provided with the pressure display device 3 for detecting the pressure of the gas storage cavity 24 and the gas release control device 4 for controlling the gas release of the gas storage cylinder 21.

[0040] As shown in Figure 3 , 4 , the pumping device 1 comprises a pumping cylinder 11 made of plastic, a pumping rod 12, an end cap 17, a shell 18, and a main piston 10.

[0041] The pumping cylinder 11 and the main mounting base 14 can be provided in a split manner or in an integrated manner. In the embodiment, the pumping cylinder 11, the main mounting base 14, the gas release mounting base 15, and the pressure mounting base 31 are provided in an integrated manner. Compared with the manner of being provided in a split manner on the base 14 through a sealing ring, the corresponding sealing structure is reduced, the sealing performance of the product is improved, and the gas leakage risk of the pumping device, the pressure display device 3, and the gas release control device 4 is reduced.

[0042] The inflator 11 is hollow and contains an inflation chamber 111. The inflation rod 12 is movably arranged in the inflation chamber 111 at one end and extends out of the inflator 11 to form a hand holding portion 13 at the other end. A main mounting base 14 is arranged at the bottom of the inflator 11 and is used to mount the gas cylinder 21. The main mounting base 14 is hollow and contains an air inlet chamber 141. The main piston 10 is movably arranged in the air inlet chamber 141. In this embodiment, the axis of the inflation chamber 111 is coaxial with the axis of the air inlet chamber 141.

[0043] The main mounting base 14 is provided with an inner ring wall 142 and an outer ring wall 143. The inner side of the inner ring wall 142 is surrounded to form the air inlet chamber 141. A one-way valve mounting hole 145 is arranged between the air inlet chamber 141 and the inflation chamber 111. The air inlet one-way valve 5 is mounted in the one-way valve mounting hole 145. The gas in the inflation chamber 141 pushes the air inlet one-way valve 5 open to enter the air inlet chamber 141 and the gas storage chamber 24. The inner side of the outer ring wall 143 is provided with a mounting portion for mounting the gas cylinder 21. In this embodiment, the mounting portion is an internal thread. The gas cylinder 21 is provided with an external thread matched with the internal thread. The gas cylinder 21 is connected with the main mounting base 14 through the thread connection. The inner ring wall 142 and the outer ring wall 143 form a connecting chamber 144 connected with the inside of the gas cylinder 21. The air inlet chamber 141 is communicated with the connecting chamber 144. In the working process, the gas from the inflation chamber 111 enters the air inlet chamber 141 through the air inlet one-way valve 5 when the air inlet one-way valve 5 is opened. Then, the gas enters the connecting chamber 144 (i.e. enters the gas storage chamber of the gas cylinder 21) through the gap between the air inlet chamber 141 and the main piston 10. In this process, the main piston 10 moves under the action of high-pressure gas until it blocks the gas outlet pipe 22 in the gas cylinder 21.

[0044] In this embodiment, the air inlet chamber 141 and the gas storage chamber 24 are always communicated through the gap between the air inlet chamber 141 and the main piston 10. Therefore, the gas entering the inflation chamber 141 through the air inlet one-way valve 5 will enter the air inlet chamber 141 and the gas storage chamber 24 at the same time, and the storage of high-pressure gas is realized. In other words, the air inlet chamber 141 can also be considered as a "gas storage chamber" for gas storage function.

[0045] The side wall of the inflator 11 near the end of the air inlet chamber is inwardly recessed and surrounded to form a cylindrical gas discharge mounting base 15. The gas discharge mounting base 15 forms a gas discharge chamber 151 communicated with the air inlet chamber 141. The gas discharge valve is arranged on the gas discharge mounting base 15. The gas discharge chamber 151 and the air inlet chamber 141 are communicated to form a gas discharge port 152. When the gas discharge valve is opened, the air inlet chamber 141 is communicated with the outside atmosphere. The gas in the air inlet chamber 141 can enter the gas discharge chamber 151 through the gas discharge port 152 and be discharged to the outside through the gas discharge control device 4 to form a low-pressure environment. Then, the main piston 10 is pushed open by the high-pressure gas in the gas storage chamber, the gas outlet pipe 22 is opened, and the high-pressure gas in the gas storage chamber 24 is instantaneously discharged from the gas outlet pipe 22 to realize high-pressure clearing.

[0046] In the embodiment, since the axis of the inflating cavity 111 is coaxial with the axis of the air inlet cavity 141, the pressure mounting seat 31 and the deflation mounting seat 15 are respectively formed on both sides of the inflator 11, i.e. the deflation control device 4 and the pressure display device 3 can be respectively arranged on both sides of the inflator 11.

[0047] The end cover 17 is mounted on the end of the inflator 11 away from the main mounting seat 14, and the end cover 17 has an inner ring part 171 and an outer ring part 172. The inner side of the inner ring part 171 is surrounded by a through hole 173 for the inflating rod 12 to pass through, and there is a gap between the inner wall of the through hole 173 and the inflating rod 12 for gas to enter. During inflating, the gas from the outside enters the inflating cavity 111 through the gap. The inner wall of the outer ring part 172 is formed with a connecting part connected to the inflator 11. In the embodiment, the connecting part is an internal thread part, and the top of the inflator 11 is formed with an external thread part corresponding to the internal thread part. The inflator 11 and the end cover 17 are connected by screwing. In actual cases, the mounting part can also be connected by buckling.

[0048] The shell 18 is sleeved on the outer periphery of the inflator 11, and one end of the shell 18 abuts against the outer ring wall 143 of the main mounting seat 14, and the other end abuts against the outer ring part 172 of the end cover 17. That is, the main mounting seat 14 and the end cover 17 clamp the shell 18 therebetween. Compared with the way of fixing the left and right shells by screws in the prior art, the installation structure is greatly simplified, and the installation efficiency is improved.

[0049] The inflating rod 12 has a rod body 121 and an inflating piston 122. One end of the rod body 121 extends into the inflating cavity 111 and is formed with the inflating piston 122. The diameter of the inflating piston 122 is greater than the diameter of the rod body 121 and also greater than the inner diameter of the through hole 173 on the end cover 17, so that the end cover 17 can restrict the inflating piston 122 in the inflator 11 to prevent it from falling out. A sealing ring 124 is further arranged between the outer circle of the inflating piston 122 and the inner wall of the inflating cavity 111.

[0050] The other end of the rod body 121 extends out of the inflator 11 and is provided with a hand holding part 13. For example, Figure 4As shown, the handheld part 13 includes a handle 132 for a person to hold and a fixing seat 131 for fixing with the rod body 121, the handle 132 is arranged perpendicularly to the rod body 121 in a cylindrical shape, the fixing seat 131 is provided with a insertion hole 134 in the middle for inserting the end of the rod body 121 away from the inflating piston 122, the fixing seat 131 is provided with a limiting hole 133 on the side, the rod body 121 is provided with a limiting block 123 matched with the limiting hole 133, the limiting block 123 is clamped into the limiting hole 133.

[0051] As shown, Figure 3 The deflation control device 4 is installed on the main mounting seat 14 and has a deflation button 41, a deflation valve 42 and a deflation connecting rod 43, the deflation button 41 is exposed and movably arranged on the shell 18 for controlling the deflation valve 42 to open, the deflation valve 42 is installed on the deflation mounting seat 15 which is integrally formed on the main mounting seat 14, the deflation connecting rod 43 is installed between the deflation button 41 and the deflation valve 42 for linking the deflation button 41 and the deflation valve 42, that is, by sliding the deflation button 41, the deflation connecting rod 43 opens the deflation valve 42 for deflation.

[0052] As shown, Figure 5 , 7 The deflation valve 42 contains a deflation valve body 44, a deflation valve core 45, a deflation sealing element 46 and a deflation elastic element 47.

[0053] The deflation valve body 44 is provided with a deflation sealing ring 441 between the deflation valve body 44 and the deflation cavity 151, the outer end of the deflation valve body 44 is extended to be provided with an outer stop edge 445 which can be blocked on the outer end edge of the deflation mounting seat 15, the inner end of the deflation valve body 44 is extended inwardly to be provided with an inner stop edge 444 and a valve core mounting port for mounting the deflation valve core, the rotating outer stop edge 445 can realize the clamping installation of the deflation valve body 44. The deflation valve core 45 is movably arranged on the deflation valve body 44, one end of the deflation connecting rod 43 is connected with the deflation valve core 45, the deflation connecting rod 43 can drive the deflation valve core 45 to move along the deflation valve body 44.

[0054] The shell 18 has a fixing part 180 for limiting the position of the deflation valve, the fixing part 180 is at least one fixing protrusion extended on the inner wall of the shell, when the shell 18 is fixed on the main mounting seat, the fixing part 180 is used for fixing the deflation valve and preventing it from being separated from the deflation cavity. In this embodiment, the fixing part 180 is two fixing protrusions which abut against the left and right sides of the deflation valve body 44, the fixing protrusions are provided with an avoiding gap for avoiding the deflation valve core or the deflation connecting rod.

[0055] The air release valve body 44 is provided with an air release valve cavity 442. The end of the air release connecting rod 43 is bent to form an extending end 433 which extends into the air release valve cavity 442. The outer periphery of the extending end 433 is provided with a plurality of protrusions. The air slots 434 are formed between the adjacent protrusions. The protrusions not only serve as guides, but the air slots 434 formed between the protrusions are also beneficial for air release.

[0056] The air release valve core 45 is provided with an air release guide rod portion 451 and an air release sealing portion 452. One end of the air release guide rod portion 451 extends into the air release valve cavity 442 and is embedded into the extending end 433 (i.e. the extending end 433 of the air release connecting rod 43 is sleeved on the air release guide rod portion 451). The other end of the air release guide rod portion 451 extends out of the air release valve cavity 442 and is provided with the valve core air release sealing portion 452. The valve core air release sealing portion 452 is provided with the air release sealing member 46 on the side facing the air release guide rod portion 451, for forming a face seal with the end face of the air release valve body 44. The air release elastic member 47 is a spring which is installed between the air release connecting rod 43 and the inner wall of the air release valve body 44, for acting on the air release connecting rod 43. When the air release valve 42 is closed, the air release valve core 45 is pushed into the air release valve cavity 442 under the action of the gas, and the air release elastic member 47 can assist in pushing the air release connecting rod 43 and the air release button 41 to reset. The outer diameter of the air release guide rod portion 451 is smaller than the inner diameter of the valve core mounting port. The outer periphery of the air release guide rod portion 451 is provided with a plurality of protrusions. The air passage slots 453 are formed between the adjacent protrusions for the gas to pass through. The air release valve core 45 can form a seal with the end face of the air release valve body 44 during movement to close the air passage slots 453. In actual situations, the air release elastic member 47 can also be cancelled, and the air release button 41 can be manually reset by manual sliding.

[0057] In this embodiment, the outer diameter of the protrusions is substantially the same as the inner diameter of the valve core mounting port. When the air release valve core 45 moves, the protrusions not only serve as guides, but the air passage slots 453 formed between the protrusions are also beneficial for air release. In another embodiment, the outer diameter of the protrusions can also be smaller than the inner diameter of the valve core mounting port.

[0058] When the pressure of the gas discharge cavity 151 connected with the air inlet cavity is high, the valve core gas discharge sealing part 452 forms a surface seal with the end surface of the gas discharge valve body 44 through the gas discharge sealing part 46, so as to close the air passage groove 453; when gas discharge is needed, the gas discharge valve core 45 is pushed inward under the action of external force, the surface seal between the valve core gas discharge sealing part 452 and the end surface of the gas discharge valve body 44 is released, and then the gas in the gas discharge cavity 151 can be discharged through the air passage groove 453. Alternatively, the gas discharge sealing part 46 is directly installed on the end surface of the valve body, and the air passage groove is formed in the inner wall of the gas discharge valve cavity 442, which can also achieve the above sealing and gas discharge effects. In order to enable the gas to enter the air passage groove 453 from one end of the gas discharge sealing part 452, the outer diameter of the sealing part 26 and the valve core gas discharge sealing part 452 is smaller than the inner diameter of the gas discharge cavity 151, that is, a gap is formed between the outer periphery of the sealing part 26 and the valve core gas discharge sealing part 452 and the inner wall of the gas discharge cavity 141; at the same time, the outer diameter of the sealing part 26 and the valve core gas discharge sealing part 452 is larger than the inner diameter of the valve core mounting port of the gas discharge valve core, so as to seal the end surface of the gas discharge valve body 44.

[0059] In the embodiment, the axis of the gas discharge cavity 151 is inclined to the axis of the air inlet cavity 141 (the gas storage cavity 24) or the gas charging cavity 111 (i.e. the gas discharge mounting seat 15 is arranged obliquely on one side of the gas charging cylinder 11), and the gas discharge connecting rod 43 is arranged vertically (parallel to the axis of the gas charging cavity 111), so that the gas discharge connecting rod 43 not only moves downward, but also moves horizontally during the movement of the gas discharge connecting rod 43. Therefore, the outer wall of the gas charging cylinder is provided with a guide protrusion 432, and the inner side of the gas discharge connecting rod 43 is provided with a guide groove 431 matched with the guide protrusion, so that the gas discharge connecting rod 43 can move along the length direction of the guide protrusion 432 and also can offset in the height direction of the guide protrusion 432.

[0060] When the pressure of the gas in the gas storage cavity 24 reaches a predetermined value, the gas discharge button 41 can be slid downward, the gas discharge connecting rod 43 slides downward and pushes the gas discharge valve core 45 to move, at this time, the gas discharge sealing part 46 leaves the end surface of the gas discharge valve body 44 to form a gap, the gas in the air inlet cavity 141 can enter the gas discharge cavity 151 through the gas discharge port 152, then enter the space between the outer shell 18 and the gas charging cylinder 11 along the gap between the gas discharge sealing part 46 and the gas discharge valve body 44, the gap between the gas discharge valve core 45 and the gas discharge valve body 44 (the air passage groove 453), and the gap between the gas discharge connecting rod 43 and the gas discharge valve body 44 (the air groove 434), and then is discharged to the outside along the gap between the gas discharge button 41 and the outer shell 18, finally the main piston 10 moves upward and leaves the rubber ring 26, the high-pressure gas in the gas storage cavity 24 is released from the gas outlet pipe instantaneously, and the high-pressure clearing is realized.

[0061] As Figure 2As shown, the gas storage device 2 is installed below the main mounting seat 14, has a gas storage cylinder 21 in a hollow cylindrical structure, one end of which is formed into a gas storage mounting end 211 mounted to the main mounting seat 14, the other end is provided with a gas outlet 212, and the middle of the inside of the gas storage cylinder 21 is provided with a gas outlet pipe 22, in which a gas outlet cavity 23 is formed to communicate with the outside, and the gas outlet pipe 22 and the inner wall of the gas storage cylinder 21 form a gas storage cavity 24. In this embodiment, the gas storage cylinder 21 is a steel structure, and the gas storage cylinder 21 and the gas outlet pipe 22 are separately arranged, the bottom of the gas outlet pipe 22 is mounted at the gas outlet 212 through a gas outlet mounting seat 221 and a sealing gasket, and the middle is positioned in the gas storage cylinder 21 through a gas outlet pipe support 27, and a gas outlet nozzle 25 is fixedly installed at the gas outlet 212, the outer end of the gas outlet nozzle is provided with a threaded structure or a quick mounting structure for connecting with a plug device.

[0062] The outer periphery of the gas storage mounting end 211 is provided with external threads matched with the internal threads in the inner side of the outer ring wall 143 of the main mounting seat 14, the gas storage mounting end 211 is connected on the outer ring wall 143 through threads, and the top of the connecting cavity 144 formed between the outer ring wall 143 and the inner ring wall 142 is provided with a gas storage sealing ring 28, and the top of the gas storage mounting end 211 is arranged on the gas storage sealing ring 28, so that the main mounting seat 14 and the gas storage mounting end 211 are sealingly connected. The gas outlet pipe 22 is a through pipe with both ends open, and a rubber ring 26 is sleeved on the end of the gas outlet pipe 22 away from the gas outlet 212 (i.e. the gas inlet end of the gas outlet pipe 22), which is used to cooperate with the main piston 10. When inflating, the main piston 10 is pushed downward (i.e. moves toward the rubber ring 26) by the gas from the inflation cavity 111 and directly moves to a position where the bottom surface of the main piston 10 is in contact with the top of the rubber ring 26. Under the action of high-pressure gas, the main piston 10 is tightly arranged on the rubber ring 26, thereby closing the gas inlet end of the gas outlet pipe 22 and isolating the communication between the gas outlet cavity 23 and the gas storage cavity 24, so that the gas from the inflation cavity 111 can only enter the connecting cavity 144 and the gas storage cavity 24 through the gas inlet cavity 141, thereby realizing the gas storage in the gas storage cavity 24.

[0063] In addition, the diameter of the side of the main piston 10 facing the rubber ring 26 (i.e. the acting surface in contact with the rubber ring 26) is greater than the outer diameter of the rubber ring 26, so that in the deflation process, the main piston 10 can be pushed back into the gas inlet cavity 141 by the gas accumulated in the gas storage cavity 24, and once the main piston 10 leaves the rubber ring 26, the gas accumulated in the gas storage cavity 24 can be quickly released from the gas outlet nozzle 25 along the gas outlet pipe 22, thereby realizing high-pressure dredging.

[0064] As shown in Figure 5 , 6 The pressure display device includes a pressure mounting seat 31, a pressure valve core 32, a pressure reset member 34, and a pressure valve cover 33.

[0065] The pressure mounting base 31 is integrally formed on the main mounting base 14 and is provided with a pressure cavity 311 and a pressure gas port 312 connecting the pressure cavity 311 and the gas storage cavity 24 (the connecting cavity 144), and the gas in the gas storage cavity 24 can enter the pressure cavity 311 through the pressure gas port 312.

[0066] The pressure valve core 32 has a pressure sealing part 321 for sealing the pressure cavity 311 and a pressure valve rod part 322, which are integrally formed, and the pressure sealing part 321 is provided with a pressure sealing ring 323 movably arranged in the pressure cavity 311 and sealing the pressure cavity 311;

[0067] The outer end of the pressure cavity 311 is provided with a pressure valve cover 33 having an annular pressure cover body 331 matched with the pressure cavity 311 and an outward flange 332 arranged at the outer end of the annular pressure cover body 331, and the annular pressure cover body 331 is transitionally fitted or interference fitted with the pressure mounting base 31. A pressure return member 34 is arranged between the pressure valve core 32 and the pressure valve cover 33, and the pressure return member 34 is preferably a spring, and the pressure valve rod part 322 extends out of the pressure cavity 311 after sequentially passing through the pressure return member 34 and the pressure valve cover 33.

[0068] In the embodiment, the housing 18 is provided with a containing groove 182, and the side wall of the containing groove 182 is provided with a containing hole 1821 through which the pressure valve rod part 322 of the pressure valve core 32 passes, and the containing groove 182 or the extending end of the pressure valve rod part 322 is provided with a pressure scale line 183, and the pressure scale line 183 is marked with the numbers 2, 4, 6 and the like corresponding to the pressure.

[0069] Since the pressure cavity 311 and the gas storage cavity 24 (the connecting cavity 144) are connected with each other, the pressure valve core 32 can move according to the pressure of the gas storage cavity 24, when the pressure of the gas storage cavity 24 is relatively low, the pressure sealing part 321 of the pressure valve core 32 is pressed to the position close to the pressure gas port 312 under the action of the pressure return member 34, and the pressure valve rod part 322 extends out of the containing groove 182 with a relatively short distance; when the pressure of the gas storage cavity 24 increases, the pressure of the pressure cavity 311 also increases, which can overcome the force of the pressure return member 34 and push the pressure sealing part 321 of the pressure valve core 32 to move towards the position of the pressure valve cover 33, so that the distance of the pressure valve rod part 322 extending out of the containing groove 182 increases, thereby displaying the pressure value of the gas storage cavity 24 through the extending distance of the pressure valve rod part 322, so that the user can view and know the gas pressure in the gas storage cavity 24 in real time, and when the preset gas pressure is reached, the gas control device can be started to work.

[0070] In addition, the integral design of the pressure mounting base 31 enables the pressure valve core 32 to be directly movably arranged in the pressure cavity 311, and compared with the split design of the pressure display table, the installation sealing structure between the pressure mounting base and the main mounting base is reduced, which is equivalent to reducing one air leakage risk, and further ensures the reliability of the dredger.

[0071] In order to prevent the pressure valve cover 33 from loosening or falling off under the high pressure of the pressure reset member 34 or the pressure cavity 311, the inner wall of the shell 18 is provided with an abutting portion 181, as shown in the drawings. Figure 7 The abutting portion 181 of the embodiment is two tabs extending on the inner wall of the accommodating groove 182 and the inner wall of the shell, and is located on both sides of the accommodating hole 1821. When the shell 18 is fixed on the main mounting base 14, the abutting portion 181 is used to fix the pressure valve cover 33 on the pressure mounting base 31 and prevent it from being separated from the pressure cavity 311.

[0072] In order to facilitate the circumferential positioning of the shell on the main mounting base 14, the end face of the main mounting base 14 close to the inflator is provided with at least one positioning protrusion 146, and the inner wall of the shell 18 is provided with at least one positioning groove 184 matched with the positioning protrusion 146. In the embodiment, the positioning protrusion 146 is provided with two and is symmetrically arranged on the main mounting base 14 on one side of the inflator 11, and the inner wall of the shell 18 is correspondingly provided with two positioning protrusions, and the positioning groove 184 is formed between the two positioning protrusions. When the shell 18 is installed on the main mounting base 14, the positioning protrusion 146 is clamped into the corresponding positioning groove 184, so as to realize the circumferential fixation of the two.

[0073] The above embodiment is only a preferred embodiment of the present application, and is not limited to the protection scope of the present application, so that: any equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A venting control device for a drain cleaner, used to control an air inlet chamber disposed on and connected to the main mounting base of the drain cleaner, characterized in that, The application relates to a deflation control device for a ball pump. The application relates to a deflation control device for a ball pump. The application relates to a deflation control device for a ball pump. The application relates to a deflation control device for a ball pump. The application relates to a deflation control device for a ball pump. The application relates to a deflation control device for a ball pump.

2. A deflation control device for a drain cleaner according to claim 1, wherein: The application relates to a deflation control device for a ball pump. The application relates to a deflation control device for a ball pump. The application relates to a deflation control device for a ball pump. The application relates to a deflation control device for a ball pump. The application relates to a deflation control device for a ball pump.

3. A deflation control device for a drain cleaner as defined in claim 2, wherein: The application relates to a deflation control device for a ball pump.

4. A deflation control device for a drain cleaner according to claim 3, wherein: The application relates to a deflation control device for a ball pump. The application relates to a deflation control device for a ball pump.

5. A deflation control device for a drain cleaner as defined in claim 4, wherein: The application relates to a deflation control device for a ball pump. The application relates to a deflation control device for a ball pump.

6. A deflation control device for a drain cleaner according to any one of claims 2-5, wherein: The application relates to a deflation control device for a ball pump. The application relates to a deflation control device for a ball pump. The application relates to a deflation control device for a ball pump. The application relates to a deflation control device for a ball pump. The application relates to a deflation control device for a ball pump. The application relates to a deflation control device for a ball pump.

7. A deflation control device for a drain cleaner as defined in claim 6, wherein: The application relates to a deflation control device for a ball pump.

8. A deflation control device for a drain cleaner according to claim 7, wherein: The application relates to a deflation control device for a ball pump.

9. A drain opener comprising: The application relates to a deflation control device for a ball pump. The application relates to a deflation control device for a ball pump. The application relates to a deflation control device for a ball pump. The application relates to a deflation control device for a ball pump. The application relates to a deflation control device for a ball pump. The application relates to a deflation control device for a ball pump. The application relates to a deflation control device for a ball pump. The application relates to a deflation control device for a ball pump.

10. A drain cleaner as defined in claim 9 wherein: The application relates to a deflation control device for a ball pump. The application relates to a deflation control device for a ball pump. The application relates to a deflation control device for a ball pump. The application relates to a deflation control device for a ball pump. The application relates to a deflation control device for a ball pump. The application relates to a deflation control device for a ball pump. The application relates to a deflation control device for a ball pump. The application relates to a deflation control device for a ball pump. The application relates to a deflation control device for a ball pump. The application relates to a deflation control device for a ball pump. The application relates to a deflation control device for a ball pump. The application relates to a deflation control device for a ball pump. The application relates to a deflation control device for a ball pump. 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