High-pressure cleaning equipment

Abstract

The invention belongs to the technical field of high-pressure cleaning water pumps, and particularly relates to high-pressure cleaning equipment which comprises a water pump shell composed of a transmission shell, a piston sheath, a water conveying shell and an end sealing plate. The transmission shell and the piston sheath are fixedly connected through a bolt; through the arrangement that a first sealing plate, a second sealing plate, a hanging rod and a clamping rod are matched with a first spring and a second spring, in the initial state, it is guaranteed that the second sealing plate is located at the relatively fixed position, after the second spring loses efficacy, the first sealing plate cannot rapidly block the water inlet side, and at the moment, backflow relatively high-pressure water can be used for extruding the first sealing plate; the first sealing plate and the second sealing plate are combined, the relative fixing state of the second sealing plate is synchronously broken, and then the first sealing plate and the second sealing plate which are combined can quickly block the water inlet side under the action of the first spring, so that the service life of the high-pressure water pump and the high-pressure cleaning equipment is prolonged; and meanwhile, it can be guaranteed that the current high-pressure cleaning action is not greatly influenced.

Description

Technical Field

[0001] The present invention belongs to the technical field of high-pressure cleaning water pumps, and specifically relates to a high-pressure cleaning device. Background Art

[0002] A high-pressure cleaning device is a cleaning device that relies on a high-pressure water pump. It is commonly found in the field of car beauty and is also relatively common in other fields.

[0003] A Chinese patent with the publication number CN119594009A discloses a high-pressure cleaning pump, which relates to the field of high-pressure cleaning pumps. It includes a pump body. A compensation connecting member is arranged inside the annular chamber, and a sealing ring located outside the ball plug is connected to the top of the annular chamber through the compensation connecting member. In the present invention, by setting the compensation connecting member, when the first telescopic spring undergoes elastic fatigue, it will cause the ball plug and the sealing ring to be unable to contact, and at the same time, the ball plug cannot block the top of the second sleeve. At this time, when the plunger moves, part of the water flow will enter the second sleeve under the impact of the plunger. In this way, the ejector rod can drive the annular sleeve to move upward. As the sealing ring moves upward, the ball plug will block the inner wall of the sealing ring again, and at the same time, the bottom of the ball plug will also contact the top of the second sleeve, so that the water flow stops entering the second sleeve, and at the same time, the third telescopic spring returns to its original state. Thus, the gap between the ball plug and the sealing ring is blocked by the movement of the sealing ring, thereby extending the service life of the device.

[0004] In the above-mentioned prior art, the mechanical structure is driven by the return water to make up for the problems caused by the spring failure, which is not reliable. It can be understood that when using this high-pressure cleaning device, it mainly relies on the high-pressure water pump. Since the output of high-pressure water by the high-pressure water pump, especially the plunger type high-pressure water pump, mainly depends on the inlet and outlet valve body, and the inlet and outlet valve body is mainly affected by the spring. Therefore, after the spring fails, relatively large problems will occur. For example, when the spring at the position of the inlet valve body fails, the water inlet will not be greatly affected. However, when high-pressure water is output, since the inlet valve body cannot respond and close, the internal pressure balance is disrupted, and the high-pressure condition for outputting high-pressure water cannot be achieved. Therefore, high-pressure water cannot be output, affecting the task being carried out at present.

[0005] Therefore, the present invention provides a high-pressure cleaning device. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: A high-pressure cleaning device described in the present invention includes: A water pump housing composed of a transmission housing, a piston sheath, a water delivery housing, and an end sealing plate; The transmission housing and the piston sheath are fixedly connected by bolts. The piston sheath and the water delivery housing are fixedly connected by bolts. The water delivery housing and the end sealing plate are fixedly connected by bolts. A piston rod is movably connected inside the piston sheath, and the piston rod is used to adjust the pressure inside the water delivery housing. A water storage cavity is arranged inside the water delivery housing. An inlet valve body, arranged at the bottom of the water delivery housing, for controlling water inlet. An outlet valve body, arranged at the top of the water delivery housing, for controlling water outlet. The inlet valve body includes a first sealing plate, a second sealing plate and a first limiting rod. Both the first sealing plate and the second sealing plate are slidably connected to the first limiting rod. The bottom of the first limiting rod is fixedly connected to the center of the bottom surface of the water inlet cavity inside the water delivery housing. The first limiting rod is arranged collinearly with the center line of the water inlet cavity. A second spring is also fixedly connected between the first sealing plate and the second sealing plate, and the second spring is sleeved on the first limiting rod. The water inlet cavity communicates with the water storage cavity. The inlet valve body further includes a first spring and a clamping rod. Two ends of the first spring are respectively fixedly connected to the bottom surface of the water inlet cavity and the side wall of the second sealing plate. The clamping rod is hinged inside the second sealing plate. Under the cooperation of the first spring and the clamping rod, the position of the second sealing plate is relatively fixed.

[0008] Preferably, it further includes: A water supply and drainage module composed of a transmission shaft, a crankshaft and a connecting arm; The transmission shaft penetrates through the transmission housing, and the crankshaft is fixedly connected to the transmission shaft. The crankshaft is arranged inside the transmission housing, and the connecting arm is hinged to the crankshaft. One end of the connecting arm is hinged to the crankshaft, and the other end is hinged to the piston rod. A piston moving cavity is arranged inside the piston sheath, and the connecting arm and the piston rod are movably connected inside the piston moving cavity. A blocking part is arranged in the middle of the piston moving cavity for restricting the displacement of the piston rod.

[0009] Preferably, a moving groove is opened on the side wall of the water inlet cavity corresponding to the second sealing plate, and a hanging rod is hinged inside the moving groove.

[0010] Preferably, a second bottom plate is arranged on one side of the water inlet cavity, and the second bottom plate is in plug-in fit with the water inlet cavity and locked by screws. A through hole collinear with the center line of the water inlet cavity is opened at the center of the second bottom plate.

[0011] Preferably, a water outlet cavity is arranged in the water delivery housing corresponding to the outlet valve body, and a first bottom plate is fixedly connected to the bottom of the water outlet cavity by screws. A through hole collinear with the center line of the water outlet cavity is opened at the center of the first bottom plate.

[0012] Preferably, the water outlet valve body includes a valve sleeve and a fourth spring; the valve sleeve is arranged in the water outlet cavity and can move in the water outlet cavity; two ends of the fourth spring are respectively fixedly connected between the top of the valve sleeve and the top inside the water outlet cavity.

[0013] Preferably, the water outlet valve body further includes a second limiting rod and a third limiting rod; the third limiting rod is clamped on the first bottom plate, and the bottom of the second limiting rod is penetrated and limited by the third limiting rod; through holes are formed in the top and bottom of the valve sleeve, and the top of the second limiting rod penetrates and extends into the valve sleeve; spheres are arranged at the top and bottom of the second limiting rod.

[0014] Preferably, a sliding plate is fixedly connected to the side wall of the valve sleeve, and the sliding plate is slidably matched with the inner wall of the water inlet cavity; a drainage groove is formed in the top surface of the valve sleeve for accelerating the pouring of the return water into the valve sleeve.

[0015] Preferably, chutes are formed at two ends of the third limiting rod, and a sliding rod parallel to the third limiting rod is fixedly connected in the chutes; a clamping block is slidably connected to the sliding rod, and a vertical dial rod is fixedly connected to the bottom of the clamping block; a third spring is sleeved on the sliding rod, and two ends of the third spring are fixedly connected to the bottom surface of the chute and the clamping block. A clamping groove is correspondingly formed on the first bottom plate, and the clamping block is clamped and matched with the clamping groove.

[0016] Preferably, a water outlet pipe is arranged at the top of the water delivery outer shell, and a water inlet pipe is arranged on the side wall of the end sealing plate; the water outlet pipe communicates with the water outlet cavity, and the water inlet pipe communicates with the water inlet cavity.

[0017] The beneficial effects of the present invention are as follows: 1. For a high-pressure cleaning device described in the present invention, through the arrangement of the first sealing plate, the second sealing plate, the hanging rod and the clamping rod in cooperation with the first spring and the second spring, in the initial state, the second sealing plate is ensured to be in a relatively fixed position. When the second spring fails, the first sealing plate cannot quickly block the water inlet side. At this time, the relatively high-pressure return water can be used to squeeze the first sealing plate, so that the first sealing plate and the second sealing plate are combined, and the relatively fixed state of the second sealing plate is synchronously broken. Subsequently, the combined first sealing plate and the second sealing plate can quickly block the water inlet side under the action of the first spring, thereby prolonging the service life of the high-pressure water pump and the high-pressure cleaning device, and at the same time ensuring that the current high-pressure cleaning operation is not greatly affected.

[0018] 2. For a high-pressure cleaning device described in the present invention, through the arrangement of the valve sleeve and the second limiting rod, when the fourth spring fails, resulting in insufficient water outlet pressure, by using the through hole at the top of the valve sleeve in cooperation with the second limiting rod, the self-gravity of the valve sleeve can be lifted when the high-pressure side returns water, thereby making up for the problem of insufficient water pressure caused by the failure of the fourth spring. Description of the Drawings

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 is a perspective view of the present invention; Figure 2 is a first partial perspective view of the present invention; Figure 3 is a left view of the present invention; Figure 4 is Figure 3 a cross-sectional view taken along line A-A in Figure 5 is Figure 4 an enlarged view of part I in Figure 6 is Figure 4 an enlarged view of part II in Figure 7 is a second partial perspective view of the present invention; Figure 8 is a perspective view of the water inlet valve body in the present invention; Figure 9 is a perspective view of the water outlet valve body in the present invention; In the figure: 10, transmission housing; 101, transmission shaft; 102, crankshaft; 103, connecting arm; 104, piston rod; 11, piston sheath; 111, piston moving cavity; 112, blocking portion; 12, water delivery housing; 121, water outlet pipe; 122, water storage cavity; 123, water inlet cavity; 124, water outlet cavity; 125, first bottom plate; 126, hanging rod; 127, second bottom plate; 13, end sealing plate; 131, water inlet pipe; 2, water inlet valve body; 21, first limiting rod; 22, first sealing plate; 23, second sealing plate; 231, clamping rod; 24, first spring; 25, second spring; 3, water outlet valve body; 31, valve sleeve; 311, drainage groove; 312, sliding plate; 313, through hole; 32, second limiting rod; 33, third limiting rod; 331, clamping block; 332, third spring; 333, shifting rod; 34, fourth spring. Specific Embodiments

[0021] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0022] As Figures 1 to 9 shown, a high-pressure cleaning device according to an embodiment of the present invention includes: a water pump housing composed of a transmission housing 10, a piston sheath 11, a water delivery housing 12 and an end sealing plate 13; The transmission housing 10 and the piston sheath 11 are fixedly connected by bolts. The piston sheath 11 and the water delivery housing 12 are fixedly connected by bolts. The water delivery housing 12 and the end sealing plate 13 are fixedly connected by bolts. A piston rod 104 is movably connected in the piston sheath 11, and the piston rod 104 is used to adjust the pressure in the water delivery housing 12. A water storage cavity 122 is arranged in the water delivery housing 12. The water inlet valve body 2 is arranged at the bottom of the water delivery housing 12 and is used to control water inlet. The water outlet valve body 3 is arranged at the top of the water delivery housing 12 and is used to control water outlet. The water inlet valve body 2 includes a first sealing plate 22, a second sealing plate 23 and a first limiting rod 21. The first sealing plate 22 and the second sealing plate 23 are both slidably connected to the first limiting rod 21. The bottom of the first limiting rod 21 is fixedly connected to the center of the bottom surface of the water inlet cavity 123 in the water delivery housing 12. The first limiting rod 21 is arranged collinearly with the center line of the water inlet cavity 123. A second spring 25 is also fixedly connected between the first sealing plate 22 and the second sealing plate 23, and the second spring 25 is sleeved on the first limiting rod 21. The water inlet cavity 123 is communicated with the water storage cavity 122. The water inlet valve body 2 further includes a first spring 24 and a clamping rod 231. The two ends of the first spring 24 are respectively fixedly connected to the bottom surface of the water inlet cavity 123 and the side wall of the second sealing plate 23. The clamping rod 231 is hinged in the second sealing plate 23. Under the cooperation of the first spring 24 and the clamping rod 231, the position of the second sealing plate 23 is relatively fixed.

[0023] When using this high-pressure cleaning device, it mainly relies on the high-pressure water pump. Due to the output of high-pressure water by the high-pressure water pump, especially the plunger type high-pressure water pump, it mainly depends on the inlet and outlet valve bodies 3, and the inlet and outlet valve bodies 3 are mainly affected by springs. Therefore, after the springs fail, relatively large problems will occur. For example, when the spring at the position of the water inlet valve body 2 fails, water inlet will not be greatly affected, but when outputting high-pressure water, since the water inlet valve body 2 cannot respond to closing, the internal pressure will be unbalanced, and the high-pressure condition for outputting high-pressure water cannot be achieved, so high-pressure water cannot be output, affecting the task being carried out at present.

[0024] In an embodiment of the present invention, when performing high-pressure cleaning work based on the high-pressure water pump, the reciprocating movement of the piston rod 104 causes the pressure in the water delivery housing 12 to change regularly. The following is an explanation based on specific water inlet and water outlet: During the water inlet process, the piston rod 104 contracts, the volume of the water storage cavity 122 in the water delivery housing 12 increases, and the pressure decreases. At this time, the pressure on the water inlet side is higher than the pressure inside the water delivery housing 12, so that the water inlet valve body 2 can be pushed open. Specifically, the pressure causes the first sealing plate 22 to displace towards the relatively fixed second sealing plate 23, so that the water inlet cavity 123 can communicate with the water storage cavity 122 inside the water delivery housing 12. It can be understood that a through hole is provided between the water storage cavity 122 and the water inlet cavity 123. In the initial state, under the action of the second spring 25, the first sealing plate 22 will move away from the second sealing plate 23, and the first sealing plate 22 is located on one side of the through hole between the water storage cavity 122 and the water inlet cavity 123. Affected by the internal pressure of the water storage cavity 122 and the water inlet side pressure, the first sealing plate 22 maintains its relative position unchanged. At this time, the water flow on the water inlet side cannot break through the first sealing plate 22 and enter the water inlet cavity 123, and then enter the water storage cavity 122 through the water inlet cavity 123 and the through hole. When the piston rod 104 contracts, the internal pressure of the water storage cavity 122 decreases, and the water inlet side pressure is higher than the internal pressure of the water storage cavity 122. At this time, the pressure can push open the first sealing plate 22, so that the water flow can enter the water storage cavity 122 through the water inlet cavity 123 and the through hole. The above is the water inlet behavior generated by the contraction of the piston rod 104. When the piston rod 104 immediately resets after contraction, since the water storage cavity 122 is filled with the just-inhaled water flow, when the piston rod 104 immediately resets, the internal pressure of the water storage cavity 122 quickly becomes higher. Under the action of the pressure and the assistance of the second spring 25, the first sealing plate 22 will quickly reset to block the water flow on the water inlet side. As the pressure in the water storage cavity 122 continues to increase, the water outlet valve body 3 will be pushed open. At this time, the water in the water storage cavity 122 will be output from the water outlet valve body 3 under the action of high pressure, thus completing the output of high-pressure water. The above is the water outlet behavior generated by the reset of the piston rod 104;However, when the second spring 25 in the water inlet valve body 2 fails, the first sealing plate 22 cannot be reset immediately. When the piston rod 104 is reset, high-pressure water may flow back into the water inlet side, resulting in the internal pressure of the water storage cavity 122 being insufficient to push open the water outlet valve body 3. In one embodiment, to address the above problem, an inclined protrusion is provided on the side wall of the first sealing plate 22 facing the water inlet side. Correspondingly, in one embodiment, a symmetrically arranged second sealing plate 23 is also provided, and an inclined protrusion is also provided on the side of the second sealing plate 23 facing away from the first sealing plate 22. When the second spring 25 fails, since the first sealing plate 22 cannot be reset, under high-pressure action, the water flow will quickly pass through the first sealing plate 22 and act on the inclined protrusion of the first sealing plate 22, applying an inclined pressure to the first sealing plate 22, thereby causing the first sealing plate 22 to approach the relatively fixed second sealing plate 23 until the first sealing plate 22 and the second sealing plate 23 merge. When the first sealing plate 22 and the second sealing plate 23 merge, the limiting effect of the first spring 24 and the latch 231 on the second sealing plate 23 in the initial state is broken. Under the action of the first spring 24, it will drive the merged first sealing plate 22 and second sealing plate 23 to displace towards the water inlet side, thereby closing the water inlet side. When the merged first sealing plate 22 and second sealing plate 23 close the water inlet side, the internal pressure of the water storage cavity 122 will gradually increase under the action of the reset of the piston rod 104, and finally push open the water outlet valve body 3 to complete high-pressure water outlet; It should be noted that the second sealing plate is limited by the first spring 24 and the latch 231, so that the second sealing plate remains in a state of relative position unchanged in the initial state or when the second spring 25 has not failed. When the first sealing plate 22 and the second sealing plate 23 merge, this state is broken, and the first spring 24 releases elastic potential energy to assist the merged body of the first sealing plate 22 and the second sealing plate 23 to displace towards the water inlet side, thereby closing the water inlet side. Among them, a ring-shaped protrusion is provided on the side of the first sealing plate 22 facing the second sealing plate 23, and a ring-shaped recess is provided on the corresponding side of the second sealing plate 23. When the first sealing plate 22 and the second sealing plate 23 merge, that is, after the ring-shaped protrusion and the ring-shaped recess are inserted and matched, they can also be adsorbed based on the magnets filled inside to keep the merged body of the first sealing plate 22 and the second sealing plate 23 stable.

[0025] As Figures 1 to 4 shown, it further includes: A water supply and drainage module composed of a transmission shaft 101, a crankshaft 102, and a connecting arm 103; The transmission shaft 101 passes through the transmission housing 10, and the crankshaft 102 is fixedly connected to the transmission shaft 101. The crankshaft 102 is arranged in the transmission housing 10, and the connecting arm 103 is hinged to the crankshaft 102; one end of the connecting arm 103 is hinged to the crankshaft 102, and the other end is hinged to the piston rod 104; a piston movable chamber 111 is provided in the piston sleeve 11, and the connecting arm 103 and the piston rod 104 are movably connected in the piston movable chamber 111; A blocking portion 112 is provided in the middle of the piston movable chamber 111 for limiting the displacement of the piston rod 104 .

[0026] In one embodiment, the power source of the plunger high-pressure water pump is a servo motor or a motor, based on the transmission shaft 101 driving the crankshaft 102, and the crankshaft 102 drives the connecting arm 103 to perform telescopic movement, thereby realizing the reciprocating movement of the piston rod 104 in the piston active chamber 111. The reciprocating movement of the piston rod 104 realizes the adjustment of the pressure of the water storage chamber 122 and realizes the water inlet and outlet action.

[0027] like Figures 1 to 6 As shown, a movable groove is provided on the side wall of the water inlet chamber 123 corresponding to the second sealing plate 23, and a hanging rod 126 is hinged in the movable groove.

[0028] As mentioned above, since the first sealing plate 22 does not need to be started in the initial state, or when the second spring 25 has not failed, it is controlled to maintain a fixed relative position, and the failure of the first spring 24 over time can also be avoided. In one embodiment, in the initial state, the second sealing plate 23 can be limited by the cooperation of the hanging rod 126 and the clamping rod 231, and the elastic potential energy of the first spring 24 that is about to be released can be kept stable in the clamping cooperation between the hanging rod 126 and the clamping rod 231, thereby ensuring that the position of the second sealing plate 23 in the initial state is relatively fixed. When the first sealing plate 22 and the second sealing plate 23 are clamped together, the annular protrusion on one side of the first sealing plate 22 will be inserted into the annular recess on one side of the second sealing plate 23, and during the insertion process, the annular protrusion will squeeze the clamping rod 231 in the annular recess, causing the clamping rod 231 to rotate clockwise (such as Figure 6 In the direction shown), after the locking rod 231 rotates clockwise, it can squeeze the hanging rod 126, so that the hanging rod 126 is separated from the locking rod 231. When the hanging rod 126 is separated from the locking rod 231, the first spring 24 will quickly release its elastic potential energy, so that the combination of the first sealing plate 22 and the second sealing plate 23 can move toward the water inlet side. Combined with the high-pressure environment inside the water storage chamber 122 caused by the reset of the piston rod 104, the combination of the first sealing plate 22 and the second sealing plate 23 can close the water inlet side, thereby outputting high-pressure water; It is worth noting that at the initial moment, that is, when the second spring 25 has not failed, since the position of the second sealing plate 23 is relatively fixed and is located on one side of the through hole between the water inlet chamber 123 and the water storage chamber 122, even if the second spring 25 fails at this time, the position of the second sealing plate 23 remains unchanged. At this time, the piston rod 104 is reset, and the water flows in the opposite direction through the through hole into the water inlet chamber 123, which will only apply pressure to the side of the second sealing plate 23 facing the first sealing plate 22, and will not directly act on the clamping rod 231, nor will it break the fixed state of the second sealing plate 23. Only after the high-pressure water acts on the oblique protrusion on the first sealing plate 22, prompting the first sealing plate 22 to move toward the second sealing plate 23 and merge with the second sealing plate 23, can the fixed state of the second sealing plate 23 be broken, so that the first sealing plate 22 and the second sealing plate 23 are merged.

[0029] like Figures 1 to 6 As shown, a second bottom plate 127 is provided on one side of the water inlet chamber 123, and the second bottom plate 127 is plugged into the water inlet chamber 123 and fastened by screws; a through hole is opened in the center of the second bottom plate 127 and is collinear with the center line of the water inlet chamber 123.

[0030] like Figures 1 to 5 As shown, a water outlet cavity 124 is provided in the water supply housing 12 corresponding to the water outlet valve body 3, and a first bottom plate 125 is fixed to the bottom of the water outlet cavity 124 by screws, and a through hole is opened in the center of the first bottom plate 125 which is collinear with the center line of the water outlet cavity 124.

[0031] like Figures 1 to 5 、 Figures 7 to 9 As shown, the water outlet valve body 3 includes a valve sleeve 31 and a fourth spring 34; the valve sleeve 31 is arranged in the water outlet chamber 124 and can move in the water outlet chamber 124; the two ends of the fourth spring 34 are respectively fixed between the top of the valve sleeve 31 and the top of the water outlet chamber 124.

[0032] In one embodiment, when the piston rod 104 is reset, if there is no abnormality in the water inlet valve body 2, that is, when the second spring 25 has not failed, when the piston rod 104 is reset, the high pressure inside the water storage chamber 122 cooperates with the second spring 25 to prompt the water inlet valve body 2 to close the water inlet side. At this time, the internal pressure of the water storage chamber 122 gradually increases, which can overcome the elastic force of the fourth spring 34 and the gravity of the valve sleeve 31, thereby separating the valve sleeve 31 from the first bottom plate 125. At this time, high-pressure water will flow into the water outlet side through the through hole, completing the output of high-pressure water; it is worth noting that in the initial state, under the action of the elastic force of the fourth spring 34 and the gravity of the valve sleeve 31 itself, the valve sleeve 31 will be close to the surface of the first bottom plate 125, thereby blocking the water outlet side.

[0033] like Figures 1 to 5 、 Figures 7 to 9As shown, the water outlet valve body 3 further includes a second limiting rod 32 and a third limiting rod 33; the third limiting rod 33 is clamped on the first bottom plate 125, and the bottom of the second limiting rod 32 is penetrated and limited by the third limiting rod 33; through holes 313 are provided at both the top and bottom of the valve sleeve 31, and the top of the second limiting rod 32 extends through to the inside of the valve sleeve 31; spheres are provided at both the top and bottom of the second limiting rod 32.

[0034] In one embodiment, in the normal state of the water outlet valve body 3, the valve body will closely adhere to the surface of the first bottom plate 125 to complete the sealing of the water outlet side. However, when the fourth spring 34 fails, it may not be possible to ensure the output of high-pressure water. Based on this, in one embodiment of the present invention, when the fourth spring 34 fails, when the valve sleeve 31 is pushed open by the high pressure inside the water storage cavity 122, a relative sliding action occurs between the second limiting rod 32 and the valve sleeve 31. At this time, the spheres at the top and bottom of the second limiting rod 32 are separated from the valve sleeve 31, so that the through holes 313 on the valve sleeve 31 are no longer blocked. At this time, part of the water will fill the inside of the valve sleeve 31, causing the overall gravity of the valve sleeve 31 to increase, thereby offsetting the problem of the inability to output high-pressure water caused by the failure of the fourth spring 34. It should be noted that in the initial state, that is, when the fourth spring 34 has not failed, it is necessary to rely on the fourth spring 34 and the self-gravity of the valve sleeve 31 to enhance the pressure inside the water storage cavity 122. That is, only when the pressure inside the water storage cavity 122 is greater than the sum of the self-gravity of the valve sleeve 31 and the elastic force of the fourth spring 34, and when the pressure of the water storage cavity 122 is recorded as A at this time, can high-pressure water be output. When the fourth spring 34 fails, the pressure in the water storage cavity 122 is much lower than A and can still push open the valve sleeve 31, so high-pressure water cannot be output. In this case, through the cooperation of the valve sleeve 31 and the second limiting rod 32, the problem of insufficient self-gravity of the valve sleeve 31 caused by the failure of the fourth spring 34 can be compensated. In addition, it should also be noted that since the water inlet efficiency at the top of the valve sleeve 31 is much greater than that at the bottom (as Figure 5 shown), the through hole 313 at the bottom of the valve sleeve 31 is always connected to the second limiting rod 32, and after the through hole 313 at the top of the valve sleeve 31 is separated from the sphere at the top of the second limiting rod 32, it will be completely open. The purpose of this approach is that when the fourth spring 34 on the valve sleeve 31 fails, the valve sleeve 31 may not be closely attached to the first bottom plate 125. When the piston rod 104 contracts, high-pressure side water may flow back, and then pour into the valve sleeve 31, causing the self-gravity of the valve sleeve 31 to rise rapidly.

[0035] As Figure 9 shown, a slide plate 312 is fixedly connected to the side wall of the valve sleeve 31, and the slide plate 312 is slidably matched with the inner wall of the water inlet cavity 123; a drainage groove 311 is provided on the top surface of the valve sleeve 31 for accelerating the pouring of the backflow water into the inside of the valve sleeve 31.

[0036] In one embodiment, the slide plate 312 provided on the side wall of the valve sleeve 31 can ensure that the valve sleeve 31 slides stably in the water outlet cavity 124 under the action of the water pressure in the water storage cavity 122. The drainage groove 311 opened at the top of the valve sleeve 31 can, when the piston rod 104 retracts, cause the high-pressure water on the water outlet side to flow back if the bottom of the valve sleeve 31 does not tightly adhere to the surface of the first bottom plate 125 at this time. At this time, the drainage groove 311 can guide the backflow water into the interior of the valve sleeve 31, and when the piston rod 104 is reset subsequently, the valve sleeve 31 lifted by its own gravity is used to increase the pressure inside the water storage cavity 122, thereby outputting high-pressure water.

[0037] As Figures 1 to 5 , Figure 9 shown, sliding grooves are opened at both ends of the third limiting rod 33, and a slide rod parallel to the third limiting rod 33 is fixedly connected in the sliding grooves; a clamping block 331 is slidably connected to the slide rod, and a vertical toggle rod 333 is fixedly connected to the bottom of the clamping block 331. A third spring 332 is sleeved on the slide rod, and both ends of the third spring 332 are fixedly connected to the bottom surface of the sliding groove and the clamping block 331; A clamping groove is correspondingly opened on the first bottom plate 125, and the clamping block 331 is in clamping fit with the clamping groove.

[0038] As Figures 1 to 4 shown, a water outlet pipe 121 is provided at the top of the water delivery outer shell 12, and a water inlet pipe 131 is provided on the side wall of the end sealing plate 13. The water outlet pipe 121 communicates with the water outlet cavity 124, and the water inlet pipe 131 communicates with the water inlet cavity 123.

[0039] Working principle: When performing high-pressure cleaning work based on a high-pressure water pump, the reciprocating movement of the piston rod 104 causes the pressure inside the water delivery outer shell 12 to change regularly. The following is an explanation based on specific water inlet and outlet: During the water inlet process, the piston rod 104 contracts, the volume of the water storage cavity 122 in the water delivery housing 12 increases, and the pressure decreases. At this time, the pressure on the water inlet side is higher than the pressure inside the water delivery housing 12, so that the water inlet valve body 2 can be pushed open. Specifically, the pressure causes the first sealing plate 22 to displace towards the relatively fixed second sealing plate 23, so that the water inlet cavity 123 can communicate with the water storage cavity 122 inside the water delivery housing 12. It can be understood that a through hole is provided between the water storage cavity 122 and the water inlet cavity 123. In the initial state, under the action of the second spring 25, the first sealing plate 22 will move away from the second sealing plate 23, and the first sealing plate 22 is located on one side of the through hole between the water storage cavity 122 and the water inlet cavity 123. Affected by the internal pressure of the water storage cavity 122 and the water inlet side pressure, the first sealing plate 22 remains in a relative position unchanged. At this time, the water flow on the water inlet side cannot break through the first sealing plate 22 and enter the water inlet cavity 123, and then enter the water storage cavity 122 through the water inlet cavity 123 and the through hole. When the piston rod 104 contracts, the internal pressure of the water storage cavity 122 decreases, and the pressure on the water inlet side is higher than the internal pressure of the water storage cavity 122. At this time, the pressure can push open the first sealing plate 22, so that the water flow can enter the water storage cavity 122 through the water inlet cavity 123 and the through hole. The above is the water inlet behavior generated by the contraction of the piston rod 104. When the piston rod 104 immediately returns to its original position after contraction, since the water storage cavity 122 is filled with the just-inhaled water flow, when the piston rod 104 immediately returns to its original position, the internal pressure of the water storage cavity 122 quickly becomes higher. Under the action of the pressure and with the assistance of the second spring 25, the first sealing plate 22 will quickly return to its original position to block the water flow on the water inlet side. As the pressure in the water storage cavity 122 continues to increase, the water outlet valve body 3 will be pushed open. At this time, the water in the water storage cavity 122 will be output from the water outlet valve body 3 under the high pressure, thus completing the output of high-pressure water. The above is the water outlet behavior generated by the return of the piston rod 104;However, when the second spring 25 in the water inlet valve body 2 fails, the first sealing plate 22 cannot be reset immediately. When the piston rod 104 is reset, high-pressure water may flow back into the water inlet side again, resulting in the internal pressure of the water storage cavity 122 being insufficient to push open the water outlet valve body 3. In one embodiment, to address the above problem, an inclined protrusion is provided on the side wall of the first sealing plate 22 facing the water inlet side. Correspondingly, in one embodiment, a symmetrically arranged second sealing plate 23 is also provided, and an inclined protrusion is also provided on the side of the second sealing plate 23 facing away from the first sealing plate 22. When the second spring 25 fails, since the first sealing plate 22 cannot be reset, under the action of high pressure, the water flow will quickly pass through the first sealing plate 22 and act on the inclined protrusion of the first sealing plate 22, applying an inclined pressure to the first sealing plate 22, thereby causing the first sealing plate 22 to approach the relatively fixed second sealing plate 23 until the first sealing plate 22 and the second sealing plate 23 are combined. When the first sealing plate 22 and the second sealing plate 23 are combined, the limiting effect of the first spring 24 and the latch 231 on the second sealing plate 23 in its initial state is broken. Under the action of the first spring 24, it will drive the combined first sealing plate 22 and second sealing plate 23 to displace towards the water inlet side, thereby playing a role in closing the water inlet side. When the combined first sealing plate 22 and second sealing plate 23 close the water inlet side, the internal pressure of the water storage cavity 122 will gradually increase under the action of the reset of the piston rod 104, and finally push open the water outlet valve body 3 to complete high-pressure water output; It should be noted that the first spring 24 and the latch 231 are used to limit the second sealing plate 23, so that the second sealing plate 23 remains in a state of relative position unchanged in its initial state or when the second spring 25 has not failed. When the first sealing plate 22 and the second sealing plate 23 are combined, this state is broken, and the first spring 24 releases its elastic potential energy to assist the combined body of the first sealing plate 22 and the second sealing plate 23 to displace towards the water inlet side, thereby closing the water inlet side. Among them, a ring-shaped protrusion is provided on the side of the first sealing plate 22 facing the second sealing plate 23, and a ring-shaped depression is provided on the corresponding side of the second sealing plate 23. When the first sealing plate 22 and the second sealing plate 23 are combined, that is, after the ring-shaped protrusion and the ring-shaped depression are inserted and matched, they can also be adsorbed based on the magnets filled inside to keep the combined body of the first sealing plate 22 and the second sealing plate 23 stable.

[0040] In the normal state of the water outlet valve body 3, the valve body will closely adhere to the surface of the first bottom plate 125 to complete the sealing of the water outlet side. However, when the fourth spring 34 fails, it may not be possible to ensure the output of high-pressure water. Based on this, in an embodiment of the present invention, when the fourth spring 34 fails, when the high pressure inside the water storage cavity 122 jacks up the valve sleeve 31, a relative sliding action occurs between the second limiting rod 32 and the valve sleeve 31. At this time, the spheres at the top and bottom of the second limiting rod 32 are separated from the valve sleeve 31, so that the through hole 313 on the valve sleeve 31 is no longer blocked. At this time, part of the water will fill the inside of the valve sleeve 31, increasing the overall gravity of the valve sleeve 31, thus offsetting the problem of the inability to output high-pressure water caused by the failure of the fourth spring 34. It should be noted that in the initial state, that is, when the fourth spring 34 has not failed, it is necessary to rely on the fourth spring 34 and the self-gravity of the valve sleeve 31 to enhance the pressure inside the water storage cavity 122. That is, only when the pressure inside the water storage cavity 122 is greater than the sum of the self-gravity of the valve sleeve 31 and the elastic force of the fourth spring 34, and when the pressure of the water storage cavity 122 is recorded as A at this time, can high-pressure water be output. When the fourth spring 34 fails, the pressure in the water storage cavity 122 is much lower than A, and the valve sleeve 31 can be jacked up, so high-pressure water cannot be output. In this case, through the cooperation of the valve sleeve 31 and the second limiting rod 32, the problem of insufficient self-gravity of the valve sleeve 31 caused by the failure of the fourth spring 34 can be compensated. In addition, it should also be noted that since the water inlet efficiency at the top of the valve sleeve 31 is much higher than that at the bottom, the through hole 313 at the bottom of the valve sleeve 31 is always connected to the second limiting rod 32, and after the through hole 313 at the top of the valve sleeve 31 is separated from the sphere at the top of the second limiting rod 32, it will be completely open. The purpose of this approach is that when the fourth spring 34 on the valve sleeve 31 fails, the valve sleeve 31 may not be closely attached to the first bottom plate 125. When the piston rod 104 contracts, it may cause the water on the high-pressure side to flow back and then pour into the valve sleeve 31, thereby rapidly increasing the self-gravity of the valve sleeve 31.

[0041] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-pressure cleaning device, characterized in that: Comprising: A water pump housing composed of a transmission housing (10), a piston sheath (11), a water delivery housing (12) and an end sealing plate (13); The transmission housing (10) and the piston sheath (11) are fixedly connected by bolts, the piston sheath (11) and the water delivery housing (12) are fixedly connected by bolts, and the water delivery housing (12) and the end sealing plate (13) are fixedly connected by bolts; A piston rod (104) is movably connected in the piston sheath (11), and the piston rod (104) is used to adjust the pressure in the water delivery housing (12); A water storage cavity (122) is arranged in the water delivery housing (12); An inlet valve body (2), arranged at the bottom of the water delivery housing (12), for controlling water inlet; An outlet valve body (3), arranged at the top of the water delivery housing (12), for controlling water outlet; The inlet valve body (2) includes a first sealing plate (22), a second sealing plate (23) and a first limiting rod (21); The first sealing plate (22) and the second sealing plate (23) are both slidably connected to the first limiting rod (21), and the bottom of the first limiting rod (21) is fixedly connected to the center of the bottom surface of the water inlet cavity (123) in the water delivery housing (12); The first limiting rod (21) is arranged collinearly with the center line of the water inlet cavity (123); A second spring (25) is also fixedly connected between the first sealing plate (22) and the second sealing plate (23), and the second spring (25) is sleeved on the first limiting rod (21); The water inlet cavity (123) communicates with the water storage cavity (122); The inlet valve body (2) further includes a first spring (24) and a latch (231), the two ends of the first spring (24) are respectively fixedly connected to the bottom surface of the water inlet cavity (123) and the side wall of the second sealing plate (23); The latch (231) is hinged in the second sealing plate (23), and the second sealing plate (23) is relatively fixed in position under the cooperation of the first spring (24) and the latch (231).

2. The high-pressure cleaning device according to claim 1, characterized in that: Further comprising: A water supply and drainage module composed of a transmission shaft (101), a crankshaft (102) and a connecting arm (103); The transmission shaft (101) penetrates the transmission housing (10), and the crankshaft (102) is fixedly connected to the transmission shaft (101), the crankshaft (102) is arranged in the transmission housing (10), and the connecting arm (103) is hinged to the crankshaft (102); One end of the connecting arm (103) is hinged to the crankshaft (102), and the other end is hinged to the piston rod (104); A piston moving cavity (111) is arranged in the piston sheath (11), and the connecting arm (103) and the piston rod (104) are movably connected in the piston moving cavity (111); A blocking portion (112) is arranged in the middle of the piston moving cavity (111) for restricting the displacement of the piston rod (104).

3. A high-pressure cleaning device according to claim 2, characterized in that: A movable groove is provided on the side wall of the water inlet cavity (123) corresponding to the second sealing plate (23), and a hanging rod (126) is hinged in the movable groove.

4. A high-pressure cleaning device according to claim 3, characterized in that: On one side of the water inlet chamber (123), a second bottom plate (127) is provided, and the second bottom plate (127) is inserted and matched with the water inlet chamber (123) and locked by screws; a through hole collinear with the central line of the water inlet chamber (123) is opened at the center of the second bottom plate (127).

5. A high-pressure cleaning device according to claim 4, characterized in that: In the water delivery housing (12), a water outlet chamber (124) is provided corresponding to the water outlet valve body (3), and a first bottom plate (125) is fixedly connected to the bottom of the water outlet chamber (124) by screws, and a through hole collinear with the central line of the water outlet chamber (124) is opened at the center of the first bottom plate (125).

6. The high-pressure cleaning device according to claim 5, wherein: The water outlet valve body (3) includes a valve sleeve (31) and a fourth spring (34); the valve sleeve (31) is arranged in the water outlet chamber (124) and can move in the water outlet chamber (124); both ends of the fourth spring (34) are fixedly connected between the top of the valve sleeve (31) and the inner top of the water outlet chamber (124).

7. A high-pressure cleaning device according to claim 6, characterized in that: The water outlet valve body (3) further includes a second limiting rod (32) and a third limiting rod (33); the third limiting rod (33) is clamped on the first bottom plate (125), and the bottom of the second limiting rod (32) is penetrated and limited by the third limiting rod (33); through holes (313) are opened at the top and bottom of the valve sleeve (31), and the top of the second limiting rod (32) penetrates and extends into the valve sleeve (31); spheres are arranged at the top and bottom of the second limiting rod (32).

8. A high-pressure cleaning device according to claim 7, characterized in that: A sliding plate (312) is fixedly connected to the side wall of the valve sleeve (31), and the sliding plate (312) is slidably matched with the inner wall of the water inlet chamber (123); a drainage groove (311) is opened on the top surface of the valve sleeve (31) for accelerating the backflow of water into the valve sleeve (31).

9. The high-pressure cleaning device according to claim 8, characterized in that: Chute grooves are opened at both ends of the third limiting rod (33), and a sliding rod parallel to the third limiting rod (33) is fixedly connected in the chute grooves; a clamping block (331) is slidably connected to the sliding rod, and a vertical lever (333) is fixedly connected to the bottom of the clamping block (331); a third spring (332) is sleeved on the sliding rod, and both ends of the third spring (332) are fixedly connected to the bottom surface of the chute groove and the clamping block (331). Corresponding clamping grooves are opened on the first bottom plate (125), and the clamping block (331) is clamped and matched with the clamping grooves.

10. A high-pressure cleaning device according to claim 9, characterized in that: A water outlet pipe (121) is arranged at the top of the water delivery housing (12), and a water inlet pipe (131) is arranged on the side wall of the end sealing plate (13). The water outlet pipe (121) communicates with the water outlet chamber (124), and the water inlet pipe (131) communicates with the water inlet chamber (123).

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