A high-pressure spray device with quick nozzle switching

Abstract

The present invention relates to the field of spraying devices, and in particular to a high-pressure spraying device with a quick nozzle switching function, comprising a middle frame, one end of the middle frame being rotatably connected to a rotary seat, a side of the rotary seat away from the middle frame being provided with short tubes in an annular array, and the short tubes being vertically movably plugged with the rotary seat, one end of the short tube away from the middle frame being connected to a spray head, and the other end of the middle frame being connected to a shell, a spray pipe being arranged in the shell, and the spray pipe being docked with one of the short tubes; a first annular groove is provided on the end face of the short tube docking the spray pipe, a second annular groove is provided on the end face of the spray pipe corresponding to the first annular groove, and a guide ring is buckled between the first annular groove and the second annular groove. The device can achieve different high-quality spray effects with a single high-pressure spraying device by quickly switching to use spray heads with different spray effects, and effectively solves the problem that ordinary adjustable spray head spray guns are difficult to meet the multi-mode high-quality high-pressure spraying requirements in industrial environments.

Description

Technical Field

[0001] The invention relates to the field of injection devices, in particular to a high-pressure injection device with quick nozzle switching. Background Art

[0002] The spray gun of high-pressure jet washing equipment is generally equipped with a single adjustable nozzle. This type of nozzle can be adjusted between columnar spray and conical scattering. The columnar jet washing pressure is high and it can more effectively clean the surface of the washed object, such as removing dirt and other attachments, while the conical scattering is more suitable for rapid and large-area washing, such as washing foam, washing sewage residues, etc.

[0003] Although the functions of the above-mentioned ordinary flushing nozzles can meet different flushing requirements, they are mostly used in conventional usage scenarios, such as car washers that do not have strict requirements on the nozzle spray effect. The concept is completely different in the industrial field. The high-pressure jet flushing equipment used in the industrial field has higher water pressure and very high requirements on the spray effect. For example, high-pressure flushing requires that the sprayed water column needs to be stably maintained for a certain distance. When sweeping a large area, fan-shaped spraying is often used to save water and be more efficient. During atomization spraying, the atomized particles must be uniform and the particle size must be stable within the required range. Therefore, the conventional practice in the industry is that different spray modes need to be completed through corresponding special nozzles. The spray guns currently on the market are difficult to meet the multi-mode high-pressure spraying requirements in industrial environments. Therefore, in order to solve the above problems, a high-pressure spray device with quick switching nozzles is proposed. Summary of the invention

[0004] In view of the problem that ordinary adjustable nozzle spray guns in the above or prior art are difficult to meet the requirements of multi-mode high-quality and high-pressure spraying in industrial environments, the present invention is proposed.

[0005] Therefore, an object of the present invention is to provide a high-pressure injection device with a quick nozzle switching function.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a high-pressure spray device for quickly switching nozzles, comprising a middle frame, one end of the middle frame is rotatably connected to a rotary seat, short tubes are distributed in an annular array on the side of the rotary seat away from the middle frame, and the short tubes are vertically movably plugged into the rotary seat, one end of the short tube away from the middle frame is connected to a nozzle, and the other end of the middle frame is connected to a shell, a nozzle is arranged in the shell, and the nozzle is docked with one of the short tubes; a first annular groove is provided on the end face of the short tube docking with the nozzle, a second annular groove is provided on the end face of the nozzle corresponding to the first annular groove, and a guide ring is buckled between the first annular groove and the second annular groove, a Tesla valve structure is formed between the first annular groove, the second annular groove and the guide ring, and the conduction direction of this Tesla valve structure is from outside the tube to inside the tube.

[0007] As a preferred solution of the high-pressure injection device for quickly switching nozzles of the present invention, the short tube is threadedly connected to the nozzle, and a limiting edge strip is fixedly provided on one side of the rotating seat of the short tube, and a first retaining spring and a second retaining spring are clamped on the other side of the rotating seat of the short tube, a chamfer is provided on the outer edge of the side of the second retaining spring away from the nozzle, and a first spring is sleeved on the short tube between the limiting edge strip and the rotating seat.

[0008] As a preferred solution of the high-pressure injection device for quickly switching nozzles of the present invention, the nozzle is fixedly sleeved with a mounting seat, and the outer wall of the mounting seat is in the shape of a quadrangular prism, spring plates are arranged on the four sides of the mounting seat, and one end of the spring plate is fixedly connected to the mounting seat, and the other end of the spring plate is fixedly connected to a clamping block, the four edges of the mounting seat are all provided with a first sliding groove inwardly, and the first sliding groove is located at one end of the mounting seat away from the clamping block and is closed, and the other end is open.

[0009] As a preferred solution of the high-pressure injection device for quickly switching nozzles of the present invention, a sliding sleeve is sleeved between the mounting seat and the clamping block, and the mounting seat and the clamping block are both slidably sleeved in the sliding sleeve, the inner walls of the four corners of the sliding sleeve at one end of the clamping block are provided with protrusions, and the protrusions are slidably connected between adjacent edges of the clamping block, and the protrusions are matched and slidably connected with the first sliding groove, and the first sliding groove is located between the sliding sleeve, the mounting seat and the clamping block and is sleeved with a spring.

[0010] As a preferred solution of the high-pressure spray device for quickly switching nozzles of the present invention, a handle is connected to the outer wall of the sliding sleeve, and the two ends of the handle are symmetrically connected to the two sides of the sliding sleeve, a second sliding groove is opened on both sides of the shell parallel to the nozzle, and the two ends of the handle are slidably connected to the second sliding groove, and the handle is wrapped around the bottom of the shell.

[0011] As a preferred solution of the high-pressure injection device for quickly switching nozzles of the present invention, the four clamping blocks are spliced ​​in a circular ring shape, and a slot is opened on the inner arc wall of the clamping block, the slot matches and clamps the second retaining spring, and the inner wall of the slot and the edge chamfer of the second retaining spring are slidably extruded.

[0012] As a preferred solution of the high-pressure injection device for quickly switching nozzles of the present invention, the guide ring is not in direct contact with the short tube and the nozzle, and the guide ring is provided with short pins parallel to the axial direction of the nozzle, the short pins are distributed in a ring array with respect to the guide ring, and the short pins are fixedly plugged with the nozzle.

[0013] As a preferred solution of the high-pressure injection device with quick nozzle switching of the present invention, the end face of the nozzle is located at the outer edge and inner edge of the second annular groove and is provided with sealing rings, and the sealing rings are in extrusion contact with the end face of the short tube.

[0014] As a preferred solution of the high-pressure spray device with quick nozzle switching of the present invention, wherein: a liquid storage chamber is sealed at the top in the shell, and the peripheral wall of the nozzle is connected to a manifold, one end of the manifold passes through the liquid storage chamber to the top of the shell, and a groove is opened at the bottom of the manifold in the liquid storage chamber, a piston is sealed and sleeved at the groove in the manifold, the top of the piston is connected to a joystick, and the top of the joystick is threadedly connected to the top of the manifold.

[0015] As a preferred solution of the high-pressure spray device with quick nozzle switching of the present invention, a spout is arranged at the top of the shell at the liquid storage chamber.

[0016] The beneficial effects of the high-pressure spraying device with quick-switching nozzles of the present invention are as follows: the device can achieve different high-quality spraying effects with a single high-pressure spraying device by quickly switching nozzles with different spraying effects, effectively solving the problem that ordinary adjustable nozzle spray guns are difficult to meet the multi-mode high-quality high-pressure spraying requirements in industrial environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A schematic diagram of the structure of a high-pressure injection device for quick nozzle switching.

[0019] Figure 2 A structural cross-sectional view of a high-pressure injection device for quick nozzle switching.

[0020] Figure 3 Schematic diagram of the nozzle group structure of a high-pressure injection device for quick nozzle switching.

[0021] Figure 4 Schematic diagram of the nozzle structure of a high-pressure injection device for quick nozzle switching.

[0022] Figure 5 A cross-sectional view of the nozzle structure of a high-pressure injection device for quick nozzle switching.

[0023] Figure 6 High-pressure jetting device for quick nozzle switching Figure 5 A is an enlarged view of the structure.

[0024] Figure 7 A cross-sectional view of the nozzle assembly structure of a high-pressure injection device for quick nozzle switching.

[0025] Figure 8 High-pressure jetting device for quick nozzle switching Figure 7 A magnified view of the structure of B.

[0026] Fig. 9 High-pressure jetting device for quick nozzle switching Figure 7 Structural breakdown diagram.

[0027] Fig.10 High-pressure jetting device for quick nozzle switching Fig. 9 A magnified view of the structure of C in the middle.

[0028] In the figure: 100, middle frame; 101, rotating seat; 102, shell; 103, short tube; 104, nozzle; 105, guide ring; 106, mounting seat; 107, spring; 108, clamping block; 109, sliding sleeve; 110, first spring; 111, sealing ring; 112, second spring; 102a, liquid storage chamber; 102b, spout; 102c, second slide groove; 103a, first annular groove; 103b, limiting edge strip; 103c, first retaining spring; 103d, second retaining spring; 104a, second annular groove; 104b, manifold; 104c, notch; 104d, piston; 104e, joystick; 105a, short pin; 106a, first slide groove; 108a, slot; 109a, protrusion; 109b, handle; 200, nozzle. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described below in conjunction with the accompanying drawings.

[0030] Explain in detail.

[0031] Example 1, reference Figure 1 to Figure 10, is the first embodiment of the present invention, which provides a high-pressure spraying device with a quick nozzle switching function. By quickly switching the nozzles 200 with different spraying effects, a single high-pressure spraying device can obtain different high-quality spraying effects. The device comprises a middle frame 100, one end of the middle frame 100 is rotatably connected to a rotary seat 101, and a side of the rotary seat 101 away from the middle frame 100 is provided with short tubes 103 in a circular array, and the short tubes 103 are vertically movably plugged with the rotary seat 101, one end of the short tube 103 away from the middle frame 100 is connected to the nozzle 200, and the other end of the middle frame 100 is connected to a shell The shell 102 has a nozzle 104 disposed therein, and the nozzle 104 is connected to one of the short tubes 103; a first annular groove 103a is provided on the end surface of the short tube 103 connected to the nozzle 104, a second annular groove 104a is provided on the end surface of the nozzle 104 corresponding to the first annular groove 103a, and a guide ring 105 is buckled between the first annular groove 103a and the second annular groove 104a, and a Tesla valve structure is formed between the first annular groove 103a, the second annular groove 104a and the guide ring 105, and the conduction direction of the Tesla valve structure is from the outside of the tube to the inside of the tube.

[0032] Specifically, the guide ring 105 does not directly contact the short tube 103 and the nozzle 104, and the guide ring 105 is provided with short pins 105a parallel to the axial direction of the nozzle 104, and the short pins 105a are distributed in a ring array with respect to the guide ring 105, and the short pins 105a are fixedly plugged with the nozzle 104. The end face of the nozzle 104 is located at the outer edge and the inner edge of the second annular groove 104a. The sealing ring 111 is provided at the end face of the short tube 103, and the sealing ring 111 is in extrusion contact with the end face of the short tube 103.

[0033] The working principle and advantages of the device are further explained in combination with the prior art: a single existing variable nozzle can adjust the liquid between columnar injection and dispersed injection effects, but in different injection modes, there is a large gap with the nozzle 200 dedicated to the corresponding effect. Therefore, industrial production and processing generally selects special high-pressure nozzles 200. The present invention integrates multiple special nozzles 200 on a single injection device, mainly providing the function of stable operation after rapid switching between multiple nozzles 200.

[0034] To realize the function of switching the above-mentioned multiple nozzles 200, first, the device has a rotating seat 101 that can rotate relative to the middle frame 100, and multiple short tubes 103 are preset on the rotating seat 101. Each short tube 103 provides an installation position for a nozzle 200, and the device needs to install at least one nozzle 200. By rotating the rotating seat 101, the nozzles 200 with different spray modes are switched to the nozzle 104 for docking. The nozzle 200 can be used after docking with the nozzle 104 through the short tube 103.

[0035] To achieve the docking of the short tube 103 and the nozzle 104, the device first constructs a leak-proof structure between the short tube 103 and the nozzle 104 using the Tesla valve as a prototype. Figure 7 and Figure 8 The first annular groove 103a butts with the second annular groove 104a and cooperates with the guide ring 105, so that the gap between the butt surfaces of the short tube 103 and the nozzle 104 along any radial cross-sectional contour of the pipeline has the structural characteristics of the Tesla valve, and its conduction direction is from the outside of the tube to the inside of the tube. Therefore, in addition to improving the fit between the butt surfaces of the short tube 103 and the nozzle 104, a butt structure with Tesla valve characteristics is also provided. When high-pressure water flows between the short tube 103 and the nozzle 104, it can effectively prevent high-pressure water from being ejected from the butt gap between the short tube 103 and the nozzle 104. The sealing structure only requires the short tube 103 and the nozzle 104 to be axially aligned and tightly attached. In addition, since the reverse direction of the conduction direction of the Tesla valve is not completely non-returnable, a very small flow rate will still pass through, and this part of the flow rate is further sealed by the sealing ring 111 between the short tube 103 and the nozzle 104.

[0036] In order for the above-mentioned docking structure with Tesla valve characteristics to achieve its target function, it is necessary to make the docking surface of the short tube 103 close to the nozzle 104. Therefore, the device is also provided with a structure for locking the docking position between the short tube 103 and the nozzle 104. Please refer to Example 2 for details. The device also provides a function of adding a medicine, providing additives to the nozzle 104 through the liquid storage chamber 102a in the shell 102 and the manifold 104b. Please refer to Example 3 for details.

[0037] It should be noted that the maximum radius length of the outer wall of the short tube 103 from the rotation axis of the rotating seat 101 should be smaller than the radius length of the rotation axis of the rotating seat 101 from the inner wall of the vertical middle frame 100 to avoid scratches between the short tube 103 and the inner wall of the middle frame 100 during the rotation of the rotating seat.

[0038] In summary, the device can achieve different high-quality spray effects with a single high-pressure spray device by quickly switching between nozzles 200 with different spray effects, effectively solving the problem that ordinary adjustable nozzle 200 spray guns are difficult to meet the multi-mode high-quality high-pressure spraying requirements in industrial environments.

[0039] Example 2, reference Figure 1 to Figure 6 , Fig. 9 and Fig.10, which is the second embodiment of the present invention. Different from the previous embodiment, this embodiment provides a locking structure for the short tube 103 of the high-pressure injection device for quickly switching the nozzle to connect the nozzle 104, through which the short tube 103 and the nozzle 104 are pressed and fitted together, which includes: the short tube 103 is threadedly connected to the nozzle 200, and the short tube 103 is located on one side of the rotary seat 101 and is fixedly provided with a limiting edge strip 103b, and the short tube 103 is located on the other side of the rotary seat 101 and is clamped with a first retaining spring 103c and a second retaining spring 103d, and the outer edge of the second retaining spring 103d away from the nozzle 104 is provided with Chamfered, the short tube 103 is located between the limiting edge strip 103b and the rotating seat 101 and is sleeved with a first spring 110. The nozzle 104 is fixedly sleeved with a mounting seat 106, and the outer wall of the mounting seat 106 is in the shape of a quadrangular prism, and the four sides of the mounting seat 106 are provided with spring plates 107, and one end of the spring plate 107 is fixedly connected to the mounting seat 106, and the other end of the spring plate 107 is fixedly connected to a clamping block 108, and the four edges of the mounting seat 106 are all provided with a first sliding groove 106a inwardly, and the first sliding groove 106a is located at one end of the mounting seat 106 away from the clamping block 108 and is closed, and the other end is open.

[0040] Specifically, a sliding sleeve 109 is sleeved between the mounting seat 106 and the clamping block 108, and the mounting seat 106 and the clamping block 108 are both slidably sleeved in the sliding sleeve 109, and the inner walls of the four corners of the sliding sleeve 109 located at one end of the clamping block 108 are all provided with protrusions 109a, and the protrusions 109a are slidably connected between the edges of adjacent clamping blocks 108, and the protrusions 109a are matched and slidably connected with the first sliding groove 106a, and the first sliding groove 106a is sleeved with a spring between the sliding sleeve 109, the mounting seat 106 and the clamping block 108, and the outer wall of the sliding sleeve 109 is connected to the handle 10 9b, and the two ends of the handle 109b are symmetrically connected to the two sides of the sliding sleeve 109, the two sides of the shell 102 are parallel to the nozzle 104 and a second slide groove 102c is provided, and the two ends of the handle 109b are slidably connected with the second slide groove 102c, the handle 109b is wrapped around the bottom of the shell 102, the four clamping blocks 108 are spliced ​​into a circular ring, and the inner arc wall of the clamping block 108 is provided with a slot 108a, the slot 108a matches and clamps the second retaining spring 103d, and the inner wall of the slot 108a and the edge chamfer of the second retaining spring 103d are slidably extruded.

[0041] The sliding sleeve 109 is pulled away from the short tube 103 by the handle 109b, so that one end of the sliding sleeve 109 is separated from the clamping block 108. The clamping block 108 is slightly tilted relative to the short tube 103 under the action of the spring 107. At this time, the nozzle 200 and the short tube 103 are ejected from the clamping range of the clamping block 108 under the action of the first spring 110. The rotating seat 101 is rotated to select the nozzle 200 to be used, and the nozzle 200 is pressed to insert the short tube 103 connected to it between the pressing sheet and the nozzle 104. The nozzle 200 is pressed against the handle 109b, and the handle 109b is reset under the action of the second spring 112 to re-slide and sleeve the clamp block 108, and the clamp block 108 is brought together. During the process of the clamps being brought together, the groove 108a on the inner arc wall is squeezed by the chamfered edge of the second retaining spring 103d on the short tube 103, and the second retaining spring 103d is pushed and squeezed to make the short tube 103 close to the nozzle 104, and at the same time, the short tube 103 and the nozzle 104 press the sealing ring 111.

[0042] The rest of the structure is the same as that of Example 1.

[0043] In summary, the structure effectively realizes stable and reliable docking between the short tube 103 and the nozzle 104, so that the designed Tesla valve structure and the sealing ring 111 achieve a preset sealing effect.

[0044] Example 3, reference Figure 1 , Figure 2 , Figure 4 and Figure 5 , which is the third embodiment of the present invention. Different from the previous embodiment, this embodiment provides an auxiliary function of a high-pressure injection device for quickly switching nozzles, including: a liquid storage chamber 102a is sealed at the top in the shell 102, and a manifold 104b is connected to the peripheral wall of the nozzle 104, one end of the manifold 104b passes through the liquid storage chamber 102a to the top of the shell 102, and a notch 104c is opened at the bottom of the manifold 104b located in the liquid storage chamber 102a, a piston 104d is sealed and sleeved at the notch 104c in the manifold 104b, a joystick 104e is connected to the top of the piston 104d, and the top of the joystick 104e is threadedly connected to the top of the manifold 104b, and a spout 102b is provided at the top of the shell 102 at the liquid storage chamber 102a.

[0045] Additives, such as paint dissolving agent, metal brightener, grinding liquid, etc., are added to the liquid storage chamber 102a through the spout 102b. By twisting the joystick 104e outside the shell 102, the piston 104d in the manifold 104b moves upward, so that the liquid storage chamber 102a is connected with the nozzle 104 through the slot 104c. The exposed area of ​​the slot 104c is adjusted to control the mixing ratio of the additive and the water flow in the nozzle 104. The cover of the spout 102b is slightly loosened to balance the pressure between the liquid storage chamber 102a and the atmosphere during the consumption of the additive, and the water flows through the nozzle 104 at a high speed. Since the pressure of the fluid is relatively low when it is still, the additive in the liquid storage chamber 102a can be actively drawn into the nozzle 104 and sprayed out together. A nozzle 200 with an atomization effect can be used to increase the uniformity of the spray coverage.

[0046] The rest of the structure is the same as that of Example 2.

[0047] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A high-pressure spraying device with quick nozzle switching, characterized in that: The invention comprises a middle frame (100), one end of the middle frame (100) is rotatably connected to a rotating seat (101), short tubes (103) are distributed in a ring array on a side of the rotating seat (101) away from the middle frame (100), and the short tubes (103) are vertically movably plugged with the rotating seat (101), one end of the short tube (103) away from the middle frame (100) is connected to a nozzle (200), and the other end of the middle frame (100) is connected to a shell (102), a nozzle (104) is arranged in the shell (102), and the nozzle (104) is connected to one of the short tubes (103); The short tube (103) is provided with a first annular groove (103a) on the end surface of the nozzle (104), and the end surface of the nozzle (104) is provided with a second annular groove (104a) corresponding to the first annular groove (103a), and a guide ring (105) is buckled between the first annular groove (103a) and the second annular groove (104a), and a Tesla valve structure is formed between the first annular groove (103a), the second annular groove (104a) and the guide ring (105), and the conduction direction of the Tesla valve structure is from the outside of the tube to the inside of the tube; The short tube (103) is threadedly connected to the nozzle (200), and a limiting edge strip (103b) is fixedly provided on one side of the rotating seat (101) of the short tube (103), and a first retaining spring (103c) and a second retaining spring (103d) are clamped on the other side of the rotating seat (101) of the short tube (103), and a chamfer is provided on the outer edge of the side of the second retaining spring (103d) away from the nozzle (104), and a first spring (110) is sleeved on the short tube (103) between the limiting edge strip (103b) and the rotating seat (101); The nozzle (104) is fixedly sleeved with a mounting seat (106), and the outer wall of the mounting seat (106) is in the shape of a quadrangular prism, four sides of the mounting seat (106) are provided with spring plates (107), and one end of the spring plate (107) is fixedly connected to the mounting seat (106), and the other end of the spring plate (107) is fixedly connected to a clamping block (108), and four edges of the mounting seat (106) are inwardly provided with first sliding grooves (106a), and the first sliding groove (106a) is located at one end of the mounting seat (106) away from the clamping block (108) and is closed, and the other end is open; A sliding sleeve (109) is sleeved between the mounting seat (106) and the clamping block (108), and the mounting seat (106) and the clamping block (108) are both slidably sleeved in the sliding sleeve (109), and the inner walls of the sliding sleeve (109) at four corners of one end of the clamping block (108) are all provided with protrusions (109a), and the protrusions (109a) are slidably connected between the edges of adjacent clamping blocks (108), and the protrusions (109a) are matched and slidably connected with the first sliding groove (106a), and the first sliding groove (106a) is sleeved with a second spring (112) between the sliding sleeve (109), the mounting seat (106) and the clamping block (108); The outer wall of the sliding sleeve (109) is connected to a handle (109b), and the two ends of the handle (109b) are symmetrically connected to the two sides of the sliding sleeve (109), and the two sides of the shell (102) are parallel to the nozzle (104) and are provided with a second sliding groove (102c), and the two ends of the handle (109b) are slidably connected to the second sliding groove (102c), and the handle (109b) is connected around the bottom of the shell (102); Four clamping blocks (108) are spliced ​​together to form a circular ring shape, and a clamping groove (108a) is provided on the inner arc wall of the clamping block (108), the clamping groove (108a) matches and clamps the second clamping spring (103d), and the inner wall of the clamping groove (108a) and the chamfered edge of the second clamping spring (103d) are slidably pressed; The guide ring (105) does not directly contact the short tube (103) and the nozzle (104), and the guide ring (105) is provided with short pins (105a) parallel to the axial direction of the nozzle (104), the short pins (105a) are distributed in a ring array with respect to the guide ring (105), and the short pins (105a) are fixedly plugged with the nozzle (104); The end surface of the nozzle (104) is located at the outer edge and the inner edge of the second annular groove (104a) and is provided with a sealing ring (111), and the sealing ring (111) is in compression contact with the end surface of the short tube (103); The sliding sleeve (109) is pulled away from the short tube (103) by the handle (109b), so that one end of the sliding sleeve (109) is separated from the clamping block (108), and the clamping block (108) is slightly tilted relative to the short tube (103) under the action of the spring (107). At this time, the nozzle (200) and the short tube (103) are ejected from the clamping range of the clamping block (108) under the action of the first spring (110). The rotating seat (101) is rotated to select the nozzle (200) to be used, and the nozzle (200) is pressed so that the short tube (103) connected to it is inserted between the pressing sheet and the nozzle (103). 4) resistance, keep pressing the nozzle (200) and release the handle (109b), the handle (109b) is reset under the action of the second spring (112) and re-slides to fit the clamp block (108), and the clamp block (108) is brought together. During the process of the clamps being brought together, the groove (108a) on the inner arc wall is squeezed with the chamfered edge of the second retaining spring (103d) on the short tube (103), and the second retaining spring (103d) is pushed and squeezed to make the short tube (103) close to the nozzle (104), and at the same time, the short tube (103) and the nozzle (104) are pressed against the sealing ring (111).

2. The high-pressure spraying device with quick nozzle switching according to claim 1, characterized in that: A liquid storage chamber (102a) is sealed at the top of the shell (102), and a manifold (104b) is connected to the peripheral wall of the nozzle (104), one end of the manifold (104b) passes through the liquid storage chamber (102a) to the top of the shell (102), and a notch (104c) is provided at the bottom of the manifold (104b) located in the liquid storage chamber (102a), a piston (104d) is sealed and sleeved at the notch (104c) in the manifold (104b), the top of the piston (104d) is connected to a joystick (104e), and the top of the joystick (104e) is threadedly connected to the top of the manifold (104b).

3. The high-pressure spraying device with quick nozzle switching as claimed in claim 2, characterized in that: A spout (102b) is provided at the top of the shell (102) located in the liquid storage cavity (102a).

Images