Inflating device for dredger and dredger

Abstract

The utility model belongs to the technical field of dredgers, and particularly relates to an inflating device for a dredger and the dredger. The device is used for being connected with an air storage device of the dredger and injecting air into an air storage cylinder of the air storage device, and comprises a base, an inflator, an inflating cavity and an inflating rod, one end of the inflating rod is movably arranged in the inflating cavity, and the other end of the inflating rod extends out of the inflator and is provided with a handheld part; the base and the inflator are integrally formed. Due to the fact that the base and the inflator are integrally formed, the air storage device is simple in structure, better in sealing performance and stability and more convenient to install, and the air storage device can be directly installed on the inflating device.

Description

Technical Field

[0001] The utility model belongs to the technical field of dredges, in particular to an air pumping device for dredges and the dredge. Background Art

[0002] Clogged drains and toilets are common problems in daily life, and plumbers can help solve this problem. Existing plumbers, such as the pneumatic toilet dredge proposed in prior patent CN218881073U, typically use a gas storage device to pump air to accumulate energy. The gas is then released from a plug installed at the outlet end. This powerful gas flow unclogs the clogged drain or toilet.

[0003] In the aforementioned prior patent, the pumping device and the gas storage device are connected and fixed via a separate mounting base. This separate mounting base must be fixed to both the pump body with the device and the gas storage device. To ensure sealing, corresponding seals must be provided between the various components. The use of a separate mounting base is not only structurally complex and inconvenient to install, but the more seals are used, the greater the likelihood of failure. Furthermore, the housing of the pumping device is divided into left and right housings, connected by screws, resulting in cumbersome assembly and low assembly efficiency. Summary of the Invention

[0004] The purpose of the utility model is to provide an air pump device for a dredge and a dredge with a simple and stable structure.

[0005] The purpose of this utility model is achieved in this way:

[0006] The utility model proposes an air pumping device for a pipe cleaner, which is used to connect to the air storage device of the pipe cleaner and inject gas into the air cylinder of the air storage device. It has the following characteristics: a base for installing the air storage cylinder, an air pump, which contains an air pumping cavity, and an air pumping rod, one end of which is movably arranged in the air pumping cavity, and the other end of which extends out of the air pump and is provided with a hand-held part; the base and the air pump are integrally formed.

[0007] The air pumping device proposed in the present invention may also have such a feature, wherein the axis of the air pumping chamber is coaxially arranged with the axis of the base or the air storage cylinder or is parallel to each other.

[0008] The air pumping device proposed in the present invention may also have such a feature, wherein the base is provided with an inner ring wall and an outer ring wall, the inner side of the inner ring wall is surrounded to form an air intake cavity, a partition is provided between the air intake cavity and the air pumping cavity, and an air intake one-way valve is installed on the partition; the inner side of the outer ring wall is provided with a mounting portion for installing an air cylinder, and a connecting cavity connected to the interior of the air cylinder is formed between the inner ring wall and the outer ring wall.

[0009] The inflation device proposed in the present invention may also have such a feature, wherein the inflation device also includes an air release mounting seat for installing the air release control device of the clearing device, an air release cavity is formed in the air release mounting seat, and an air release port connecting the air release cavity with the connecting cavity is provided on the air release mounting seat, and the air release mounting seat and the air pump are integrally formed.

[0010] The air pump device proposed in the present invention may also have such a feature, wherein the air pump device also includes a pressure mounting seat for installing the pressure display device of the clearing machine, a pressure chamber is formed in the pressure mounting seat, and a pressure air port connecting the pressure chamber with the connecting chamber is opened on the pressure mounting seat, and the pressure mounting seat and the air pump are integrally formed.

[0011] The inflation device proposed in the present invention may also have such a feature, wherein, when the axis of the inflation chamber is coaxially arranged with the axis of the air inlet chamber, the pressure mounting seat and the deflation mounting seat are respectively formed on both sides of the air pump; when the axis of the inflation chamber and the axis of the air inlet chamber are parallel to each other, the pressure mounting seat and the deflation mounting seat are formed on the same side of the air pump.

[0012] The air pump device proposed in the present invention may also have such features, including: an end cover, installed at the end of the air pump away from the base, an outer shell, sleeved on the outer circumference of the air pump, the end cover having an inner ring portion and an outer ring portion, the inner side of the inner ring portion is surrounded by a through hole for the air pump rod to pass through, the inner wall of the outer ring portion is formed with a connecting portion connected to the air pump, one end of the outer shell rests on the base, and the other end rests on the outer ring portion.

[0013] The inflation device proposed in the present invention may also have such a feature, wherein the inflation rod comprises: a rod body, one end of which extends into the inflation cavity, and the other end of which extends out of the air pump and is provided with a hand-held part; an inflation piston, which is formed at one end of the rod body located in the inflation cavity, and a sealing ring is provided between the rod body and the inside of the inflation cavity.

[0014] The inflation device proposed in the present invention may also have such a feature, wherein a fixing seat fixed to the rod body is provided on the hand-held part, a socket is provided in the middle of the fixing seat for inserting the end of the rod body away from the inflation piston, a limiting hole is provided on the peripheral side of the fixing seat, a limiting block cooperating with the limiting hole is provided on the rod body, a slot leading to the limiting hole is formed on the peripheral wall of the socket, and the limiting block is inserted along the slot and clamped into the limiting hole.

[0015] The air pumping device proposed in the present invention may also have the following feature: an annular nest is provided on the inner wall of the air inlet chamber, and a main piston is movably provided on the nest.

[0016] The present invention also proposes a pipe cleaner having the following characteristics: an air pumping device, an air storage device installed on the air pumping device, and an air storage cylinder for storing gas from the air pumping device, wherein the air pumping device is the air pumping device for the pipe cleaner as described above.

[0017] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects:

[0018] According to the air pump device for a pipe cleaner and the pipe cleaner proposed by the utility model, since the base and the air pump are integrally formed, not only is the structure simple, but the sealing and stability are also better, and the installation is also more convenient, and the air storage device can be directly installed on the air pump device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model dredge.

[0020] Figure 2 It is a cross-sectional view of the dredge of Example 1 of the utility model.

[0021] Figure 3 It is a cross-sectional view of the inflation device of Example 1 of the present utility model.

[0022] Figure 4 It is a structural exploded view of the inflation device of Example 1 of the present utility model.

[0023] Figure 5 It is a structural schematic diagram of an air pump according to embodiment 1 of the present invention.

[0024] Figure 6 It is a structural schematic diagram of the handheld part of the utility model.

[0025] Figure 7 It is a structural schematic diagram of the inflation device of Example 2 of the present utility model.

[0026] Figure 8 This is an installation diagram of the air pump, pressure display device, and air release control device according to embodiment 2 of the present invention.

[0027] Figure 9 It is a cross-sectional view of the inflation device of Example 2 of the present utility model.

[0028] Figure 10 It is a cross-sectional schematic diagram of the main piston installation structure of Example 3 of the present utility model.

[0029] Figure 11 This is an exploded view of the main piston installation structure of Example 3 of the present utility model.

[0030] 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 50, 51, 49, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90 DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with specific embodiments:

[0032] It should be noted that the structures, proportions, sizes, etc. depicted in the drawings of the embodiments of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions for the implementation of this application. Therefore, they have no substantial technical significance. Any structural modification, change in proportional relationship or adjustment of size, without affecting the efficacy and purpose that can be achieved by this application, should still fall within the scope of the technical content disclosed in this application. At the same time, the terms such as "inside" and "outside" quoted in the embodiments of this specification are only for the convenience of description and are not used to limit the scope of the implementation of this application. Changes or adjustments in their relative relationships, without substantially changing the technical content, should also be regarded as the scope of the implementation of this application.

[0033] When an element is referred to as being “connected,” “disposed,” or “mounted” to another element, it may be directly connected to the other element or indirectly connected, disposed, or mounted to the other element via an intervening element.

[0034] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0035] <Example 1>

[0036] This embodiment provides a dredge, in particular a dredge for dredging toilets or sewer pipes, such as Figure 1 and Figure 2As shown, the drain cleaner at least includes an air pumping device 1, an air storage device 2, a pressure display device 3 and an air release control device 4. The air pumping device 1 is an air pumping device for the drain cleaner. The air storage device 2 is installed on the air pumping device 1 and has an air storage cylinder 21 for storing gas from the air pumping device 1.

[0037] Specifically, the pumping device 1 is used to pump gas into the gas cylinder 21. Figure 3 As shown, the air pump 1 includes an air pump 11 made of plastic, an air pump rod 12, a base 14, an air release mounting seat 15, a pressure mounting seat 16, an end cover 17, a housing 18 and a main piston 10. The air release mounting seat 15 and the pressure mounting seat 16 are used to mount the air release control device 4 and the pressure display device 3 respectively. Figure 5 As shown, the pump 11, base 14, deflation mount 15, and pressure mount 16 are all integrally formed from plastic. Compared to the prior art method in which the pump 11 is separately mounted on the base 14 via a sealing ring, this embodiment eliminates this sealing structure, improving the product's sealing performance and reducing the risk of air leakage during inflation.

[0038] like Figure 3-Figure 4 As shown, the pump 11 is hollow and contains an air chamber 111. One end of a pump rod 12 is movably disposed within the chamber 111, while the other end extends out of the pump 11 and is provided with a handle 13. The base 14 is located at the bottom of the pump 11 and is used to mount the air reservoir 21. The base 14 is hollow and contains an air inlet chamber 141, within which the main piston 10 is movably disposed. In this embodiment, the axis of the air chamber 111 is coaxial with the axis of the air inlet chamber 141.

[0039] The base 14 is provided with an inner annular wall 142 and an outer annular wall 143. The inner side of the inner annular wall 142 surrounds and forms an air inlet cavity 141. A partition 112 is provided between the air inlet cavity 141 and the air inlet cavity 111. The air inlet check valve 61 is mounted on the partition 112. The inner side of the outer annular wall 143 is provided with a mounting portion for mounting the air reservoir 21. In this embodiment, the mounting portion is internally threaded, and the air reservoir 21 is provided with a matching external thread. The air reservoir 21 and the base 14 are connected by a thread. In actual situations, the mounting portion can also be a snap-fit ​​structure, and a snap-fit ​​connection is adopted accordingly. A connecting chamber 144 is formed between the inner annular wall 142 and the outer annular wall 143, which communicates with the interior of the air reservoir 21. The air inlet chamber 141 is in communication with the connecting chamber 144. During operation, gas from the pumping chamber 111 enters the air inlet chamber 141 through the air inlet one-way valve 61 when the air inlet one-way valve 61 is opened, and then enters the connecting chamber 144 (i.e., enters the air reservoir 21) through the gap between the air inlet chamber 141 and the main piston 10. An air storage chamber is formed inside the air reservoir 21, and a vertical air outlet pipe is provided in the middle. The interior of the air outlet pipe leads to the outside to form an air outlet chamber (the structure of the air reservoir 21 can be referred to in the prior patent CN218881073U). During this process, the main piston 10 moves under the action of the high-pressure gas and seals against the upper end of the air outlet pipe in the middle of the air reservoir 21. At this time, the air inlet chamber 141 and the air storage chamber are at the same high pressure.

[0040] A deflation chamber 151 is formed within the deflation mounting base 15. The distal end of the deflation control device 4 is mounted on the deflation mounting base 15. The deflation mounting base 15 also includes a deflation port 152 connecting the deflation chamber 151 with the intake chamber 141. When the deflation control device 4 is opened, the intake chamber 141 is connected to the outside atmosphere. Gas in the intake chamber 141 can enter the deflation chamber 151 through the deflation port 152 and be discharged to the outside through the deflation control device 4, creating a low pressure. At this point, the main piston 10 moves under the high pressure of the air storage chamber, opening the outlet pipe. The high-pressure gas in the air storage chamber is instantly released through the outlet pipe, achieving high-pressure dredging.

[0041] A pressure chamber 161 is formed in the pressure mounting seat 16, and the end of the pressure display device 3 is set on the pressure mounting seat 16. A pressure air port 162 is opened on the pressure mounting seat 16 to connect the pressure chamber 161 with the connecting chamber 144. The gas in the connecting chamber 144 (gas cylinder 21) can enter the pressure chamber 161 through the pressure air port 162, thereby facilitating the pressure display device 3 to detect the gas pressure in the gas cylinder 21 and display the current air pressure value.

[0042] In this embodiment, since the axis of the inflation chamber 111 is coaxially arranged with the axis of the air inlet chamber 141, the pressure mounting seat 16 and the deflation mounting seat 15 are respectively formed on both sides of the air pump 11, that is, the deflation control device 4 and the pressure display device 3 can be respectively placed on both sides of the air pump 11.

[0043] The end cap 17 is mounted on the end of the air pump 11 away from the base 14. The end cap 17 has an inner ring portion 171 and an outer ring portion 172. The inner side of the inner ring portion 171 is surrounded by a through hole 173 for the air rod 12 to pass through, and a gap is provided between the inner wall of the through hole 173 and the air rod 12 for gas to enter. When air is pumped, the external gas enters the pumping cavity 111 through the gap. The inner wall of the outer ring portion 172 is formed with a connecting portion connected to the air pump 11. In this embodiment, the connecting portion is an internal thread. Correspondingly, an external thread is formed on the top of the air pump 11. The air pump 11 and the end cap 17 are connected by a thread. In actual situations, the connecting portion can also be a structure such as a snap-on connection, which can be connected by a snap-on connection, or directly glued.

[0044] The outer shell 18 is sleeved on the outer circumference of the air pump 11, and one end of the outer shell 18 rests on the outer ring wall 143 of the base 14, and the other end rests on the outer ring portion 172 of the end cover 17. That is to say, the base 14 and the end cover 17 clamp the outer shell 18 between the two. Compared with the existing technology in which the left and right shells are fixed by screws, the installation structure is greatly simplified and the installation efficiency is improved.

[0045] The pumping rod 12 has a rod body 121 and a pumping piston 122. One end of the rod body 121 extends into the pumping cavity 111 to form the pumping piston 122. The diameter of the pumping piston 122 is larger than the diameter of the rod body 121, and is also larger than the inner diameter of the through hole 173 on the end cover 17, so that the end cover 17 can restrict the pumping piston 122 in the air pump 11 to prevent it from falling out; a sealing ring 124 is also provided between the outer ring of the pumping piston 122 and the inner wall of the pumping cavity 111.

[0046] The other end of the rod body 121 extends out of the air pump 11 and is provided with a hand-held portion 13. Figure 6 As shown, the hand-held portion 13 includes a handle 132 for holding and a fixing base 131 for fixing to the rod body 121. The two are formed in one piece. The handle 132 is cylindrical and arranged perpendicular to the rod body 121. A socket 135 is provided in the middle of the fixing base 131 for inserting the end of the rod body 121 away from the pumping piston 122. A limiting hole 133 is provided on the peripheral side of the fixing base 131. A limiting block 123 that cooperates with the limiting hole 133 is provided on the rod body 121. A slot 134 leading to the limiting hole 133 is formed on the peripheral wall of the socket 135. The limiting block 123 is inserted along the slot 134 and is clamped into the limiting hole 133.

[0047] <Example 2>

[0048] like Figure 7-Figure 9As shown, this embodiment differs from the aforementioned embodiment 1 in that the axis L1 of the pumping chamber 111 and the axis L2 of the air inlet chamber 141 are not collinear, but are arranged parallel to each other, i.e., L1 and L2 are eccentrically arranged. In this case, the air inlet check valve 61 is also offset a certain distance, creating a relatively ample space on one side of the pump 11 (the left side in the figure). The pressure mounting seat 16 and the deflation mounting seat 15 can be formed on the same side of the pump 11, allowing the deflation control device 4 and the pressure display device 3 to be placed on the same side of the pumping chamber 111. This improves the space utilization between the housing 18 and the pump 11. Conversely, the diameters of the housing 18, base 14, and air reservoir can be designed to be smaller, achieving product miniaturization.

[0049] <Example 3>

[0050] like Figure 10-11 As shown, this embodiment, based on the above-mentioned embodiment 1, further includes a nest 145 on the inner wall of the intake chamber 141. The main piston 10 is movably mounted within this nest 145. When the intake chamber 141 and the inflation chamber 111 are coaxially arranged, the size of the intake chamber 141 can be expanded to provide sufficient installation space for the deflation control device 4 and the pressure display device 3. However, due to the limitations of the one-piece molding process, the precision of the inner surface of the intake chamber 141 will decrease. To address this issue, an annular nest 145 can be provided on the inner wall of the intake chamber 141. The nest 145 has an interference fit with the intake chamber 141 and is provided with a rib. During assembly, the nest 145 can be directly pressed into place for securement. Because the nest 145 is a separately injection-molded component, its inner wall is highly precise, which helps to increase the sliding stability and life of the main piston 10.

[0051] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. An air pumping device for a pipe cleaner, used for connecting to a gas storage device (2) of the pipe cleaner and pumping gas into a gas cylinder (21) of the gas storage device (2), characterized in that: include: A base (14) for mounting the gas cylinder (21); An air pump (11) comprising an air pump chamber (111); as well as A pumping rod (12), one end of which is movably disposed in the pumping cavity (111), and the other end of which extends out of the pump (11) and is provided with a hand-held portion (13); The base (14) and the air pump (11) are integrally formed.

2. The air pump device for a pipe cleaner according to claim 1, characterized in that: in, The axis of the pumping chamber (111) is coaxial with or parallel to the axis of the base (14) or the air storage cylinder (21).

3. The air pump device for a pipe cleaner according to claim 1, characterized in that: in, The base (14) is provided with an inner annular wall (142) and an outer annular wall (143); the inner side of the inner annular wall (142) is surrounded to form an air intake cavity (141); a partition (112) is provided between the air intake cavity (141) and the pumping cavity (111); an air intake check valve (61) is installed on the partition (112); A mounting portion for mounting the gas cylinder (21) is provided on the inner side of the outer annular wall (143), and a connecting cavity (144) communicating with the interior of the gas cylinder (21) is formed between the inner annular wall (142) and the outer annular wall (143).

4. The air pump device for a pipe cleaner according to claim 3, characterized in that: The device further comprises a deflation mounting seat (15) for mounting the deflation control device (4) of the dredge, wherein a deflation cavity (151) is formed in the deflation mounting seat (15), and a deflation port (152) is provided on the deflation mounting seat (15) for connecting the deflation cavity (151) with the connecting cavity (144), and the deflation mounting seat (15) and the air pump (11) are integrally formed.

5. The air pump device for a pipe cleaner according to claim 4, characterized in that: The device further comprises a pressure mounting seat (16) for mounting the pressure display device (3) of the dredge, wherein a pressure chamber (161) is formed in the pressure mounting seat (16), and a pressure air port (162) is provided on the pressure mounting seat (16) for connecting the pressure chamber (161) with the connecting chamber (144), and the pressure mounting seat (16) and the air pump (11) are integrally formed.

6. The air pump device for a pipe cleaner according to claim 5, characterized in that: in, When the axis of the pumping chamber (111) and the axis of the air inlet chamber (141) are coaxially arranged, the pressure mounting seat (16) and the air release mounting seat (15) are respectively formed on both sides of the air pump (11); when the axis of the pumping chamber (111) and the axis of the air inlet chamber (141) are parallel to each other, the pressure mounting seat (16) and the air release mounting seat (15) are formed on the same side of the air pump (11).

7. An air pump for a pipe cleaner according to any one of claims 1 to 6, characterized in that: Also includes: An end cap (17) is mounted on the end of the air pump (11) away from the base (14). The outer shell (18) is sleeved on the outer periphery of the air pump (11). The end cover (17) comprises an inner ring portion (171) and an outer ring portion (172). A through hole (173) is formed on the inner side of the inner ring portion (171) for the pumping rod (12) to pass through. A connecting portion connected to the pump (11) is formed on the inner wall of the outer ring portion (172). One end of the housing (18) abuts against the base (14), and the other end abuts against the outer ring portion (172).

8. The air pump device for a pipe cleaner according to claim 7, characterized in that: in, The pumping rod (12) has: The rod body (121) has one end extending into the pumping cavity (111) and the other end extending out of the pump (11) and is provided with the hand-held portion (13). An air pumping piston (122) is formed at one end of the rod body (121) located in the air pumping cavity (111), and a sealing ring is provided between the rod body (121) and the interior of the air pumping cavity (111); The handheld portion (13) is provided with a fixing seat (131) fixed to the rod body (121), a socket (132) is provided in the middle of the fixing seat (131) for inserting the end of the rod body (121) away from the pumping piston (122), a limiting hole (133) is provided on the peripheral side of the fixing seat (131), and a limiting block (123) is provided on the rod body (121) to cooperate with the limiting hole (133). A slot (134) leading to the limiting hole (133) is formed on the peripheral wall of the insertion hole (132), and the limiting block (123) is inserted along the slot (134) and is clamped into the limiting hole (133).

9. The air pump device for a pipe cleaner according to any one of claims 3 to 6, characterized in that: The inner wall of the air inlet chamber (141) is provided with an annular nest (145), and the nest (145) is movably provided with a main piston (10).

10. A dredge, characterized in that: include: Inflating device (1), A gas storage device (2) is installed on the gas pumping device (1) and has a gas storage cylinder (21) for storing gas from the gas pumping device (1). Wherein, the aerating device (1) is an aerating device for a drain cleaner as described in any one of claims 1 to 9.

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