Steam cleaning lance with easily removable steam valve

Abstract

A steam cleaning lance with a steam valve convenient to disassemble, comprising a shell, a nozzle, a steam valve and a steam button; the steam button is swingably connected to the shell, and the steam valve is opened or closed by pressing the steam button to swing; the steam valve is composed of an upper valve body, a lower valve body and a valve rod; the upper valve body is provided with an upper chamber, which comprises an opening on the lower side of the upper valve body; the lower valve body is provided with a lower chamber, which comprises an opening on the upper side of the lower valve body; the upper valve body and the lower valve body are vertically combined to make the upper chamber and the lower chamber butt joint to form a valve chamber, and the valve rod is movably arranged in the valve chamber; the valve body is divided into two parts, which can not only reduce the production difficulty, but also reduce the assembly difficulty of the steam valve itself, and the lower valve body can be disassembled from the lower valve body when subsequent maintenance is required, effectively reducing the maintenance difficulty of the steam valve in the later period.

Description

Technical Field

[0001] This utility model relates to the field of steam cleaning equipment, specifically to a steam cleaning spray gun with a steam valve that is easy to disassemble and assemble. Background Technology

[0002] Steam cleaners are devices used for sterilization, dust removal, stain removal, oil removal, and odor removal. These devices utilize high-temperature, high-pressure steam to clean floors, doors and windows, clothing, range hoods, air conditioners, microwave ovens, and sanitary ware, sterilizing surfaces and removing micro-dust and bacteria in an environmentally friendly and hygienic manner. They can prevent allergies and remove stubborn stains and grease; require no chemical reagents and cause virtually no damage to the items being cleaned.

[0003] Steam cleaners currently on the market generally consist of two parts: a main body and a spray gun. The main body contains a boiler to generate steam, while the spray gun is connected to the main body through a pipe to spray out the steam. The spray gun also contains a steam valve, which controls the steam output by opening and closing the valve.

[0004] For example, Chinese patent application number ZL202223586194.7 discloses: "A steam valve for a steam spray gun, relating to a steam spray gun, belonging to the technical field of steam cleaning equipment, comprising a valve body, a receiving space provided inside the valve body, an air inlet and an air outlet staggered vertically on the outer side of the valve body, the air inlet and the air outlet communicating with the receiving space, and a sealing seat provided in the receiving space, the sealing seat providing a valve core for controlling the opening and closing of the air inlet and the air outlet, an elastic element provided between the upper end of the valve core and the receiving space, the lower end of which extends out of the sealing seat, the sealing seat providing an air inlet end and an air outlet end, the sealing part of the valve core constantly pressing against the air outlet end of the sealing seat by means of the elasticity of the elastic element, the air outlet end providing a sealing slope, the sealing part of the valve core providing an inclined surface for cooperating with the sealing slope, the purpose of this utility model is to provide a steam valve with a reasonable structure and good sealing effect."

[0005] However, including the solutions in the aforementioned patents, the steam valves in existing steam cleaning spray guns all have a problem: the valve body is a single piece, which makes the installation of the valve stem inside the valve body and the installation of the steam valve inside the spray gun quite complicated. Furthermore, when the steam valve needs maintenance and cleaning after a period of use, disassembling the steam valve is also very inconvenient. Summary of the Invention

[0006] In order to overcome the shortcomings of the steam cleaning spray gun in the prior art, where the valve body of the steam valve is set as an integral part, making it inconvenient to disassemble and assemble, this utility model provides a steam cleaning spray gun with a steam valve that is easy to disassemble and assemble.

[0007] The technical solution of this utility model to solve its technical problem is: a steam cleaning spray gun with an easy-to-disassemble steam valve, comprising:

[0008] shell;

[0009] A nozzle is disposed inside the housing, with one end of the nozzle extending from the front end of the housing;

[0010] A steam valve is installed inside the housing. The steam inlet of the steam valve is connected to the main body of the steam cleaner through a steam inlet pipe, and the steam outlet of the steam valve is connected to the nozzle through a steam outlet pipe.

[0011] The steam injection button is oscillatingly connected to the housing. Pressing the steam injection button causes it to oscillate, which can open or close the steam valve.

[0012] The steam valve consists of an upper valve body, a lower valve body, and a valve stem;

[0013] The upper valve body has an upper chamber, which includes an opening on the lower side of the upper valve body. The lower valve body has a lower chamber, which includes an opening on the upper side of the lower valve body. The upper valve body and the lower valve body are joined together so that the upper chamber and the lower chamber are connected to form a valve cavity. The valve stem is movably inserted into the valve cavity.

[0014] The steam inlet is located on the upper valve body and connects to the upper chamber, and the steam outlet is located on the lower valve body and connects to the lower chamber; the valve stem can be moved to connect or isolate the upper chamber from the lower chamber.

[0015] Furthermore, a groove is formed on the lower side of the upper valve body at the opening of the lower chamber, and a rib is formed on the upper side of the lower valve body at the opening of the upper chamber. The rib is inserted into the groove, and a sealing step is formed at the top of the rib in the valve cavity. A sealing rib is formed at the top of the valve stem. The sealing rib can form a sealing fit with the sealing step and block the opening of the lower chamber.

[0016] Furthermore, a sealing spring is also installed in the upper cavity. One end of the sealing spring abuts against the inner wall of the upper cavity, and the other end abuts against the top of the valve stem, so that the sealing spring acts on the valve stem, and the sealing rib on the valve stem always has a tendency to maintain a sealing fit with the sealing step.

[0017] Furthermore, a first sealing ring is also embedded on the periphery of the insertion rib. When the insertion rib and the insertion groove form an insertion fit, the first sealing ring can seal the fit between the insertion groove and the insertion rib.

[0018] Furthermore, the valve stem includes a sealing end and a mating end; the lower chamber also includes an opening located on the lower side of the lower valve body, through which the mating end of the valve stem extends to the valve body, and a second sealing ring is also embedded on the periphery of the mating end of the valve stem, the second sealing ring being sealed and mated between the valve stem and the lower chamber; the sealing rib protrudes from the sealing end of the valve stem.

[0019] Furthermore, the lower side of the upper valve body is provided with several connecting posts, and the upper side of the lower valve body is provided with several connecting ears. The connecting posts are provided with threaded holes, and the connecting ears are provided with through holes. By passing a bolt through the through hole on the connecting ear and tightening it into the threaded hole on the connecting post, the connection between the upper valve body and the lower valve body can be realized.

[0020] Furthermore, a mounting seat is protruding on the inner wall of the outer shell, and a mounting groove is recessed on the mounting seat, in which the steam valve is embedded; both the upper valve body and the lower valve body have protruding snap fasteners on their sides, and the mounting seat has protruding snap claws. The steam valve is connected to the mounting seat by the snap-fitting action of the snap claws and the snap fasteners.

[0021] Furthermore, one end of the steam injection button is hinged to the outer casing, the lower side of the steam injection button protrudes outside the outer casing, the upper side of the steam injection button is located inside the outer casing, and a driving rib is protruding from the upper side of the steam injection button. The driving rib abuts against the valve stem of the steam valve, thereby enabling the valve stem to move when the steam injection button is pressed.

[0022] Furthermore, the upper valve body is provided with an upper connecting pipe post protruding from it, and the lower valve body is provided with a lower connecting pipe post protruding from it; the steam inlet is opened inside the upper connecting pipe post, the steam outlet is opened inside the lower connecting pipe post, the steam inlet pipe is sleeved on the upper connecting pipe post, and the steam outlet pipe is sleeved on the lower connecting pipe post.

[0023] The beneficial effects of this utility model are as follows:

[0024] 1. The steam valve is composed of an upper valve body and a lower valve body assembled together. Dividing the valve body into two parts not only reduces the difficulty of production, but also reduces the assembly difficulty of the steam valve itself. Furthermore, the lower valve body can be disassembled when maintenance is required, which effectively reduces the difficulty of later maintenance of the steam valve.

[0025] 2. The valve stem of the steam valve is clamped between the upper valve body and the lower valve body, so that the valve stem can be assembled between the two during the assembly of the upper and lower valve bodies. The sealing rib at the top of the valve stem forms a sealing fit with the sealing step on the lower valve body, and can also isolate the upper chamber from the lower chamber. This allows the valve stem to not only perform its function, but also makes the installation in the steam valve very simple.

[0026] 3. A mounting base is provided on the outer casing for installing the steam valve. The steam valve is fixed by the snap-fit ​​between the snap-fit ​​claws on the mounting base and the snap-fit ​​buckles on the steam valve, making the installation of the steam valve inside the outer casing of this steam cleaning spray gun easier.

[0027] 4. The steam injection button is equipped with a drive rib for triggering the steam valve, making the transmission between the steam injection button and the steam valve more accurate and effective. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of this utility model.

[0029] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0030] Figure 3 This is a cross-sectional view of the steam valve in this utility model.

[0031] Figure 4 This is an exploded view of the steam valve in this utility model.

[0032] Figure 5 This is a schematic diagram showing the disassembly of the steam valve relative to the outer casing in this utility model.

[0033] Figure 6 This is a schematic diagram of the steam injection button in this utility model.

[0034] Figure 7 This is a schematic diagram illustrating the state changes of the steam valve controlled by pressing the steam injection button in Embodiment 2 of this utility model.

[0035] Figure 8 This is a schematic diagram showing the state changes of the valve stem movement inside the steam valve in Embodiment 2 of this utility model.

[0036] The diagram labels are as follows: 1. Outer shell; 2. Nozzle; 3. Steam valve; 4. Steam inlet; 5. Steam inlet pipe; 6. Steam outlet; 7. Steam outlet pipe; 8. Steam injection button; 9. Upper valve body; 10. Lower valve body; 11. Valve stem; 12. Upper chamber; 13. Lower chamber; 14. Valve cavity; 15. Insertion groove; 16. Insertion rib; 17. Sealing step; 18. Sealing rib; 19. Sealing spring; 20. First sealing ring; 21. Sealing end; 22. Mating end; 23. Second sealing ring; 24. Connecting post; 25. Connecting lug; 26. Threaded hole; 27. Through hole; 28. Mounting base; 29. ​​Mounting groove; 30. Snap-fit ​​buckle; 31. Snap-fit ​​claw; 32. Drive rib; 33. Upper pipe post; 34. Lower pipe post. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] It should be understood that although the terms upper, middle, lower, top, one end, etc., appear in this document to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish the elements from each other for ease of understanding, and are not used to define any directional or sequential restrictions.

[0039] Example 1

[0040] Reference Figures 1 to 6 As shown, a steam cleaning spray gun with an easily detachable steam valve includes a housing 1, a nozzle 2, a steam valve 3, and a steam injection button 8. The nozzle 2 is installed inside the housing 1, with one end extending from the front end of the housing 1. The steam valve 3 is located inside the housing 1, with its steam inlet 4 connected to the main body of the steam cleaner via a steam inlet pipe 5, and its steam outlet 6 connected to the nozzle 2 via a steam outlet pipe 7. The steam injection button 8 is pivotally connected to the housing 1; pressing the button causes it to pivot, which opens or closes the steam valve 3. The steam valve 3 consists of an upper valve body 9, a lower valve body 10, and a valve stem 11. The upper valve body 9 has an upper chamber 12, which includes an opening on the lower side of the upper valve body 9. The lower valve body 10 has a lower chamber 13, which includes an opening on the upper side of the lower valve body 10. The upper valve body 9 and the lower valve body 10 are joined together so that the upper chamber 12 and the lower chamber 13 are connected to form a valve cavity 14. The valve stem 11 is movably inserted into the valve cavity 14. The steam inlet 4 is opened on the upper valve body 9 and communicates with the upper chamber 12. The steam outlet 6 is opened on the lower valve body 10 and communicates with the lower chamber 13. The valve stem 11 can be moved to connect or disconnect the upper chamber 12 and the lower chamber 13.

[0041] Combination Figure 3 and Figure 4 As shown, in this embodiment, a ring of insertion groove 15 is provided on the lower side of the upper valve body 9 at the opening of the lower chamber 13, and a ring of insertion rib 16 is provided on the upper side of the lower valve body 10 at the opening of the upper chamber 12. The insertion rib 16 is inserted into the insertion groove 15, and a sealing step 17 is formed on the top of the insertion rib 16 in the valve cavity 14. A sealing rib 18 is provided on the top of the valve stem 11. The sealing rib 18 can form a sealing fit with the sealing step 17 and block the opening of the lower chamber 13.

[0042] Combination Figure 3 and Figure 4 As shown, in this embodiment, a sealing spring 19 is also installed in the upper chamber 12. One end of the sealing spring 19 abuts against the inner wall of the upper chamber 12, and the other end abuts against the top of the valve stem 11, so that the sealing spring 19 acts on the valve stem 11, so that the sealing rib 18 on the valve stem 11 always has a tendency to maintain a sealing fit with the sealing step 17.

[0043] Combination Figure 3 and Figure 4 As shown, in this embodiment, a first sealing ring 20 is also embedded on the periphery of the insertion rib 16. When the insertion rib 16 and the insertion groove 15 form an insertion fit, the first sealing ring 20 can seal the fit between the insertion groove 15 and the insertion rib 16.

[0044] Combination Figure 3 and Figure 4 As shown, in this embodiment, the valve stem 11 includes a sealing end 21 and a mating end 22; the lower chamber 13 also includes an opening located on the lower side of the lower valve body 10, through which the mating end 22 of the valve stem 11 extends to the valve body, and a second sealing ring 23 is also embedded on the periphery of the mating end 22 of the valve stem 11, the second sealing ring 23 sealingly fitting between the valve stem 11 and the lower chamber 13; the sealing rib 18 protrudes from the sealing end 21 of the valve stem 11.

[0045] Among them, such as Figure 4 As shown in the figure, in this embodiment, a plurality of connecting posts 24 protrude around the lower side of the upper valve body 9, and a plurality of connecting ears 25 protrude around the upper side of the lower valve body 10. The connecting posts 24 are provided with threaded holes 26, and the connecting ears 25 are provided with through holes 27. By relying on bolts passing through the through holes 27 on the connecting ears 25 and tightening them into the threaded holes 26 on the connecting posts 24, the connection between the upper valve body 9 and the lower valve body 10 can be realized.

[0046] Among them, such as Figure 5 As shown in the figure, in this embodiment, a mounting base 28 is also provided on the inner wall of the outer shell 1, and a mounting groove 29 is provided on the mounting base 28. The steam valve 3 is embedded in the mounting groove 29. The upper valve body 9 and the lower valve body 10 are both provided with snap fasteners 30 on their sides. The mounting base 28 is provided with snap claws 31. The steam valve 3 is connected to the mounting base 28 by snapping the snap claws 31 with the snap fasteners 30.

[0047] Combination Figure 2 and Figure 6As shown, in this embodiment, one end of the steam injection button 8 is hinged to the outer shell 1. The lower side of the steam injection button 8 is exposed outside the outer shell 1, and the upper side of the steam injection button 8 is located inside the outer shell 1. The upper side of the steam injection button 8 is provided with a driving rib 32, which abuts against the valve stem 11 of the steam valve 3, thereby enabling the valve stem 11 to move when the steam injection button 8 is pressed.

[0048] Combination Figures 2 to 4 As shown, in this embodiment, the upper valve body 9 is provided with an upper pipe post 33, and the lower valve body 10 is provided with a lower pipe post 34; the steam inlet 4 is opened inside the upper pipe post 33, the steam outlet 6 is opened inside the lower pipe post 34, the steam inlet pipe 5 is sleeved on the upper pipe post 33, and the steam outlet pipe 7 is sleeved on the lower pipe post 34.

[0049] The installation process of the steam valve 3 inside the housing 1 in this embodiment is as follows:

[0050] First, the steam valve 3 itself needs to be assembled. During assembly, first align the mating end 22 on the valve stem 11 with the opening on the upper side of the lower valve body 10, and insert the valve stem 11 into the lower chamber 13 until the sealing rib 18 at the top of the valve stem 11 abuts against the insertion rib 16 on the upper side of the upper valve body 9. Then, cover the lower valve body 10 with the upper valve body 9, so that the insertion rib 16 on the lower valve body 10 is inserted and mated in the insertion groove 15. At the same time, the connecting lug 25 on the lower valve body 10 needs to be aligned with the connecting post 24 on the upper valve body 9. Then, pass the bolt through the connecting lug 25. Tighten the screw 27 into the threaded hole 26 on the connecting column 24, thus completing the assembly of the steam valve 3. Next, align the steam valve 3 with the mounting base 28 on the housing 1 and insert the steam valve 3 into the mounting groove 29 of the mounting base 28, so that the locking claw 31 on the mounting base 28 can engage with the locking buckle 30 of the steam valve 3. Thus, the installation of the steam valve 3 on the housing 1 is completed. When the steam valve 3 needs to be maintained in the future, it can be removed from the housing 1, and the upper valve body 9 and the lower valve body 10 can be disassembled for maintenance and cleaning.

[0051] The advantages of this embodiment are: the steam valve is composed of an upper valve body and a lower valve body, which makes the assembly of the steam valve itself simpler, and the assembly of the steam valve on the outer shell is also simpler. Furthermore, when the steam valve needs to be maintained in the future, the upper valve body and the lower valve body can be disassembled for maintenance or cleaning, making the subsequent maintenance simpler.

[0052] Example 2

[0053] Reference Figure 7 and Figure 8 As shown, this embodiment is the specific process of operating the steam cleaning spray gun in the first embodiment above;

[0054] The operation process of this embodiment is as follows: First, this steam cleaning spray gun needs to be connected to the steam cleaner body for use. When using it, first turn on the steam cleaner body to generate steam in its internal boiler. The steam will enter the steam cleaning spray gun through the pipe. The steam entering the steam cleaning spray gun will first enter the valve chamber 14 of the steam valve 3 through the steam inlet pipe 5 and the steam inlet 4. Under normal conditions, the valve stem 11 inside the steam valve 3 is under the action of the sealing spring 19, which keeps the sealing rib 18 in a sealing fit with the sealing step 17, thereby blocking the steam in the upper part of the valve chamber 14. Inside chamber 12, the lower chamber 13 cannot be accessed. When the operator presses the steam injection button 8 on the spray gun, the drive rib 32 on the steam injection button 8 can push the valve stem 11 back into the steam valve 3. At this time, the valve stem 11 overcomes the action of the sealing spring 19 and moves upward in the valve cavity 14, so that the sealing rib 18 of the valve stem 11 moves away from the sealing step 17 and releases the sealing fit. At this time, the steam in the upper chamber 12 of the valve cavity 14 can enter the lower chamber 13 and be output to the nozzle 2 through the steam outlet 6 and the steam outlet pipe 7, and finally sprayed out through the nozzle 2.

[0055] The remaining structures and advantages of this embodiment are consistent with those of Embodiment 1 above, and will not be repeated here.

[0056] The above specific embodiments are merely explanations of the present utility model and are not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to the embodiments without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A steam cleaning spray gun with an easily detachable steam valve, comprising: Outer shell (1); A nozzle (2) is inserted inside the housing (1), and one end of the nozzle (2) extends out from the front end of the housing (1); A steam valve (3) is installed inside the housing (1). The steam inlet (4) of the steam valve (3) is connected to the main body of the steam cleaner through the steam inlet pipe (5). The steam outlet (6) of the steam valve (3) is connected to the nozzle (2) through the steam outlet pipe (7). The steam injection button (8) is oscillatingly connected to the housing (1). By pressing the steam injection button (8) to make it oscillate, the steam valve (3) can be opened or closed. Its features are: The steam valve (3) consists of an upper valve body (9), a lower valve body (10), and a valve stem (11); The upper valve body (9) has an upper chamber (12) inside, and the upper chamber (12) includes an opening located on the lower side of the upper valve body (9). The lower valve body (10) has a lower chamber (13) inside, and the lower chamber (13) includes an opening located on the upper side of the lower valve body (10). The upper valve body (9) and the lower valve body (10) are joined together so that the upper chamber (12) and the lower chamber (13) are connected to form a valve cavity (14). The valve stem (11) is movably inserted into the valve cavity (14). The steam inlet (4) is located on the upper valve body (9) and connects to the upper chamber (12), and the steam outlet (6) is located on the lower valve body (10) and connects to the lower chamber (13); the valve stem (11) can be moved to connect or isolate the upper chamber (12) and the lower chamber (13).

2. The steam cleaning spray gun with an easily detachable steam valve according to claim 1, characterized in that: The upper valve body (9) has a ring of insertion groove (15) at the opening of the lower chamber (13) on its lower side. The lower valve body (10) has a ring of insertion rib (16) protruding at the opening of the upper chamber (12) on its upper side. The insertion rib (16) is inserted into the insertion groove (15). The top of the insertion rib (16) forms a sealing step (17) in the valve cavity (14). The top of the valve stem (11) has a sealing rib (18) protruding. The sealing rib (18) can form a sealing fit with the sealing step (17) and block the opening of the lower chamber (13).

3. A steam cleaning spray gun with an easily detachable steam valve according to claim 2, characterized in that: A sealing spring (19) is also installed inside the upper chamber (12). One end of the sealing spring (19) abuts against the inner wall of the upper chamber (12), and the other end abuts against the top of the valve stem (11), so that the sealing spring (19) acts on the valve stem (11), so that the sealing rib (18) on the valve stem (11) always has a tendency to maintain a sealing fit with the sealing step (17).

4. A steam cleaning spray gun with an easily detachable steam valve according to claim 2, characterized in that: The periphery of the insertion rib (16) is also provided with a first sealing ring (20). When the insertion rib (16) and the insertion groove (15) form an insertion fit, the first sealing ring (20) can seal between the insertion groove (15) and the insertion rib (16).

5. A steam cleaning spray gun with an easily detachable steam valve according to claim 2, characterized in that: The valve stem (11) includes a sealing end (21) and a mating end (22); the lower chamber (13) also includes an opening located on the lower side of the lower valve body (10), through which the mating end (22) of the valve stem (11) extends to the valve body, and a second sealing ring (23) is also embedded on the periphery of the mating end (22) of the valve stem (11), the second sealing ring (23) being sealed between the valve stem (11) and the lower chamber (13); the sealing rib (18) protrudes from the sealing end (21) of the valve stem (11).

6. A steam cleaning spray gun with an easily detachable steam valve according to claim 1, characterized in that: The upper valve body (9) has several connecting posts (24) protruding around its lower side, and the lower valve body (10) has several connecting ears (25) protruding around its upper side. The connecting posts (24) have threaded holes (26), and the connecting ears (25) have through holes (27). By passing a bolt through the through hole (27) on the connecting ear (25) and tightening it into the threaded hole (26) on the connecting post (24), the connection between the upper valve body (9) and the lower valve body (10) can be achieved.

7. A steam cleaning spray gun with an easily detachable steam valve according to claim 1, characterized in that: The inner wall of the outer shell (1) is also provided with a mounting seat (28), and the mounting seat (28) is provided with a mounting groove (29), and the steam valve (3) is embedded in the mounting groove (29); the sides of the upper valve body (9) and the lower valve body (10) are provided with snap fasteners (30), and the mounting seat (28) is provided with snap claws (31). The steam valve (3) is connected to the mounting seat (28) by snapping the snap claws (31) and snap fasteners (30).

8. A steam cleaning spray gun with an easily detachable steam valve according to claim 1, characterized in that: One end of the steam injection button (8) is hinged to the outer shell (1). The lower side of the steam injection button (8) is exposed outside the outer shell (1). The upper side of the steam injection button (8) is located inside the outer shell (1). A driving rib (32) is protruding from the upper side of the steam injection button (8). The driving rib (32) abuts against the valve stem (11) of the steam valve (3), thereby enabling the valve stem (11) to move when the steam injection button (8) is pressed.

9. A steam cleaning spray gun with an easily detachable steam valve according to claim 1, characterized in that: The upper valve body (9) is provided with an upper pipe post (33), and the lower valve body (10) is provided with a lower pipe post (34); the steam inlet (4) is opened inside the upper pipe post (33), the steam outlet (6) is opened inside the lower pipe post (34), the steam inlet pipe (5) is sleeved on the upper pipe post (33), and the steam outlet pipe (7) is sleeved on the lower pipe post (34).

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