Pressure-adjustable quick-connection combined joint structure of high-pressure cleaning machine

Abstract

The utility model discloses a pressure-adjustable quick-connection combined joint structure of a high-pressure cleaning machine, and belongs to the field of high-pressure cleaning machines. The pressure-adjustable quick-connection combined connector structure of the high-pressure cleaning machine comprises a conveying pipe end connector, an engine end connector and a connector connecting pipe. The joint connecting pipe is provided with a connecting pipe first section and a connecting pipe second section, the first end of the connecting pipe first section is connected with the conveying pipe end joint, the second end of the connecting pipe first section is connected with the first end of the connecting pipe second section, and the second end of the connecting pipe second section is connected with the engine end joint. A fixed plug and a movable valve element are arranged in the second end of the first section of the connecting pipe. The utility model has the beneficial effects that the fixed plug and the movable valve core are added, and the size of a gap between the head part of the valve core and the plug valve port is changed by screwing in or out the movable valve core, so that the flow / pressure is adjusted.

Description

Technical Field

[0001] This utility model relates to a high-pressure cleaner, and more particularly, to a structure of an adjustable pressure quick-connect combination connector for a high-pressure cleaner. Background Technology

[0002] High-pressure washers are used to output high-pressure water jets to clean object surfaces. The quick-connect couplings of high-pressure washers are used to connect the delivery pipe and the engine. Currently, these quick-connect couplings only provide connection functionality (quick plug-and-play) but lack flow / pressure adjustment capabilities. If a specific flow / pressure is required, an external flow / pressure adjustment device must be connected. The disadvantages of this technical solution are: time-consuming and labor-intensive, low operating efficiency, and high maintenance costs. Therefore, there is an urgent need to design a convenient and reliable adjustable quick-connect coupling structure for high-pressure washers to meet specific flow / pressure adjustment requirements. Summary of the Invention

[0003] The technical problem to be solved by this utility model is that the quick-connect combination structure of the existing high-pressure cleaner does not have the function of flow / pressure adjustment.

[0004] To solve the above technical problems, the technical solution is as follows: A pressure-adjustable quick-connect combination joint structure for a high-pressure cleaner, comprising: a delivery pipe end joint, an engine end joint, and a joint connecting pipe; the joint connecting pipe has a first connecting pipe section and a second connecting pipe section, the first end of the first connecting pipe section is connected to the delivery pipe end joint, the second end of the first connecting pipe section is connected to the first end of the second connecting pipe section, and the connection between the second end of the first connecting pipe section and the first end of the second connecting pipe section is detachable, and the second end of the second connecting pipe section is connected to the engine end joint; the second end of the first connecting pipe section has a fixed plug and a movable valve core inside, the fixed plug is located inside, the movable valve core is located outside, the fixed plug has a plug valve port, the movable valve core has a valve core head and a valve core tail, the valve core head is relative to the plug valve port, the gap formed by the valve core head and the plug valve port determines the flow rate, and the valve core tail is threadedly connected to the first connecting pipe section. The beneficial effects are at least as follows: by adding the fixed plug and the movable valve core, the gap between the valve core head and the plug valve port can be changed by screwing the movable valve core in or out, thereby adjusting the flow rate / pressure.

[0005] As a preferred embodiment of the adjustable quick-connect coupling structure for a high-pressure washer, the first section of the connecting pipe further includes a compression spring. This compression spring is positioned between the fixed plug and the tail of the valve core, and is in a compressed state, meaning it applies pre-pressure to the tail of the valve core. The beneficial effect is at least that the external thread of the valve core tail fits tightly against the internal thread of the first section of the connecting pipe, making it less prone to displacement under fluid impact and vibration.

[0006] As a preferred embodiment of the adjustable quick-connect coupling structure for high-pressure cleaners, the tail end face of the valve core has a rotating groove. The rotating groove is either straight or cross-shaped. The advantage is at least that it facilitates the rotation of the movable valve core.

[0007] As a preferred embodiment of the adjustable quick-connect coupling structure for high-pressure cleaners, the valve core head has an outwardly convex conical surface structure, while the plug valve port has an inwardly concave conical surface structure.

[0008] As a preferred embodiment of the adjustable pressure quick-connect combination joint structure for high-pressure cleaners, the connection between the first end of the first section of the connecting pipe and the end connector of the delivery pipe is either an integral connection or a detachable connection.

[0009] As a preferred embodiment of the adjustable pressure quick-connect combination joint structure for high-pressure cleaners, the connection between the second end of the second section of the connecting pipe and the engine end connector is either an integral connection or a detachable connection. Attached Figure Description

[0010] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0011] Figure 2 This is a schematic diagram of the connector connecting pipe in an embodiment of this utility model.

[0012] Figure 3 This is a schematic diagram of the structure of the delivery pipe end connector and the delivery pipe in an embodiment of this utility model.

[0013] Figure 4 This is a schematic diagram of the engine end connector and engine structure according to an embodiment of this utility model. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings. It should be noted that these descriptions are intended to aid in understanding the present invention but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0015] See Figure 1The figure shows an adjustable pressure quick-connect coupling structure for a high-pressure washer. The adjustable pressure quick-connect coupling structure includes: a delivery pipe end connector 1, an engine end connector 2, and a connector connecting pipe 3 for connecting the delivery pipe end connector 1 and the engine end connector 2.

[0016] The delivery pipe end connector 1 is used to connect to the delivery pipe of the high-pressure cleaner.

[0017] In this embodiment, the delivery pipe end connector 1 is a female connector. In other embodiments, the delivery pipe end connector 1 is a male connector.

[0018] The engine end connector 2 is used to connect to the engine of the high-pressure washer.

[0019] In this embodiment, the engine end connector 2 is a male connector. In other embodiments, the engine end connector 2 is a female connector.

[0020] The connector connecting pipe 3 is designed as a two-section pipe, comprising a first connecting pipe section 31 and a second connecting pipe section 32. The first end of the first connecting pipe section 31 is connected to the delivery pipe end connector 1. The second end of the first connecting pipe section 31 is connected to the first end of the second connecting pipe section 32. Furthermore, the connection between the second end of the first connecting pipe section 31 and the first end of the second connecting pipe section 32 is a detachable connection (e.g., a threaded connection). The second end of the second connecting pipe section 32 is connected to the engine end connector 2.

[0021] In this embodiment, the first end of the first segment 31 of the connecting pipe is integrally connected to the end connector 1 of the delivery pipe. In other embodiments, the first end of the first segment 31 of the connecting pipe is detachably connected to the end connector 1 of the delivery pipe (e.g., threaded connection).

[0022] In this embodiment, the second end of the second segment 32 of the connecting pipe is integrally connected to the engine end connector 2. In other embodiments, the second end of the second segment 32 of the connecting pipe is detachably connected to the engine end connector 2 (e.g., threaded connection).

[0023] See Figure 2The second end of the first section 31 of the connecting pipe contains a fixed plug 4 and a movable valve core 5. The fixed plug 4 is located internally, while the movable valve core 5 is located externally. The fixed plug 4 is fixed. The fixed plug 4 has a plugging valve port 40. The movable valve core 5 has a valve core head 51 and a valve core tail 52. The valve core head 51 is formed on the head end face of the valve core tail 52. The valve core head 51 is positioned relative to the plugging valve port 40. The gap formed between the valve core head 51 and the plugging valve port 40 determines the flow rate. The valve core tail 52 is threadedly connected to the first section 31 of the connecting pipe. Using this threaded connection, the movable valve core 5 can be screwed in or out.

[0024] In this embodiment, the valve core head 51 has an outwardly convex conical surface structure, while the blocking valve port 40 has an inwardly concave conical surface structure.

[0025] Preferably, a compression spring 6 is further provided inside the first section 31 of the connecting pipe. The compression spring 6 surrounds the valve core head 51. The first end of the compression spring 6 abuts against the fixed plug 4. The second end of the compression spring 6 abuts against the valve core tail 52. The compression spring 6 is in a compressed state. That is, the compression spring 6 applies a preload to the valve core tail 52, so that the external thread of the valve core tail 52 is tightly attached to the internal thread of the first section 31 of the connecting pipe, making it less prone to displacement under fluid impact and vibration.

[0026] Preferably, the tail end face of the valve core 52 has a turning groove 520. The turning groove 520 is, for example, a straight groove or a cross groove. The adjustment process of the gap formed between the valve core head 51 and the blocking valve port 40 is as follows: First, separate the first section 31 and the second section 32 of the connecting pipe. At this time, the turning groove 520 is exposed. By using a screwdriver or other special tools in conjunction with the turning groove 520, the valve core tail 52 can be screwed in or out of the first section 31 of the connecting pipe, thereby changing the absolute position of the movable valve core 5, and thus adjusting the size of the gap between the valve core head 51 and the blocking valve port 40. To increase the flow rate, screw out the movable valve core 5; to decrease the flow rate, screw in the movable valve core 5. After adjustment, reassemble the first section 31 and the second section 32 of the connecting pipe.

[0027] See Figure 3 The figure shows the delivery pipe end connector 1 and the delivery pipe 100. In use, the two are connected together.

[0028] See Figure 4 The figure shows the engine end connector 2 and the engine 200. In use, the two are connected together.

[0029] The above description merely illustrates the embodiments of this utility model, and while the description is relatively specific and detailed, it should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A pressure-adjustable quick-connect coupling structure for a high-pressure washer, characterized in that, include: The device includes a delivery pipe end connector, an engine end connector, and a connector connecting pipe. The connector connecting pipe has a first connecting pipe section and a second connecting pipe section. The first end of the first connecting pipe section is connected to the delivery pipe end connector, and the second end of the first connecting pipe section is connected to the first end of the second connecting pipe section. The connection between the second end of the first connecting pipe section and the first end of the second connecting pipe section is detachable. The second end of the second connecting pipe section is connected to the engine end connector. The second end of the first connecting pipe section has a fixed plug and a movable valve core inside. The fixed plug is located inside, and the movable valve core is located outside. The fixed plug has a plugging valve port, and the movable valve core has a valve core head and a valve core tail. The valve core head is relative to the plugging valve port, and the gap formed between the valve core head and the plugging valve port determines the flow rate. The valve core tail is threadedly connected to the first connecting pipe section.

2. The adjustable pressure quick-connect coupling structure for a high-pressure washer according to claim 1, characterized in that, The first section of the connecting pipe further contains a compression spring. The compression spring is located between the fixed plug and the tail of the valve core. The compression spring is in a compressed state, that is, the compression spring applies pre-pressure to the tail of the valve core.

3. The adjustable pressure quick-connect coupling structure for a high-pressure washer according to claim 1 or 2, characterized in that, The tail end face of the valve core has a turning groove.

4. The adjustable pressure quick-connect coupling structure for a high-pressure washer according to claim 3, characterized in that, The screw groove is either straight or cross-shaped.

5. The adjustable pressure quick-connect coupling structure for a high-pressure washer according to claim 1, characterized in that, The valve core head has an outwardly convex conical surface structure, while the plug valve port has an inwardly concave conical surface structure.

6. The adjustable pressure quick-connect coupling structure for a high-pressure washer according to claim 1, characterized in that, The connection between the first end of the first section of the connecting pipe and the end connector of the delivery pipe can be either an integral connection or a detachable connection.

7. The adjustable pressure quick-connect coupling structure for a high-pressure washer according to claim 1, characterized in that, The connection between the second end of the second section of the connecting pipe and the engine end connector can be either an integral connection or a detachable connection.

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