Small external double-spring sprayer

Abstract

A small external double-spring sprayer, comprising a head cap outer cover (1). A head cap (3) is provided in the head cap outer cover; a spraying piece (2) is provided at the front end of the head cap; the head cap is connected to a valve stem (4); the valve stem is sleeved at the upper portion of a valve needle (11); the valve needle passes through a bushing (7) and a piston (10); an inner spring (6) is further sleeved on the valve needle; the upper portion of the inner spring is located in the valve stem; the lower end of the inner spring is in contact with the piston; an outer spring (5) is provided on the outer side of the inner spring; the upper portion of the outer spring is located in a middle sleeve (8); the lower portion of the outer spring is located in the bushing; the middle sleeve is sleeved on the outer side of the bushing; the middle sleeve is connected to an air cylinder (12); a gasket (9) is provided inside the middle sleeve; the gasket is sleeved on the outer side of the air cylinder; a suction tube (14) is connected to the bottom of the air cylinder; and a steel ball (13) is provided inside the air cylinder. According to the sprayer, inclination of the valve stem during mounting is avoided and adverse chemical reaction caused by the contact between a content object and a metal spring is avoided.

Description

Short external double spring sprayer Technical Field

[0001] The invention relates to the technical field of spray pumps, in particular to a short and small external double-spring sprayer. Background Art

[0002] A pump is a machine used to increase the pressure of a liquid or gas to cause it to flow. It is a device used to move liquids, gases, or special fluid media, and in other words, a machine that performs work on the fluid. Pumps are primarily used to transport liquids including water, oil, acids and alkalis, emulsions, suspensoids, and liquid metals. They can also transport mixtures of liquids and gases, as well as liquids containing suspended solids.

[0003] Currently, most spray pumps for daily chemical products, cleaning products, and cosmetics on the market use metal springs. However, metal springs easily come into contact with the contents, causing adverse chemical reactions and contamination of the contents.

[0004] Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides a short external double-spring sprayer, including a head cap outer cover, a head cap is arranged inside the head cap outer cover, a spray piece is arranged at the front end of the head cap, the head cap is connected to the valve stem, the valve stem is sleeved on the upper part of the valve needle, the valve needle passes through the bushing and the piston, the valve needle is also sleeved with an inner spring, the upper part of the inner spring is located in the valve stem, the lower end of the inner spring is in contact with the piston, an outer spring is arranged on the outside of the inner spring, the upper part of the outer spring is located in the middle sleeve, the lower part of the outer spring is located in the bushing, the middle sleeve is sleeved on the outside of the bushing, the middle sleeve is connected to the cylinder, a gasket is arranged inside the middle sleeve, the gasket is sleeved on the outside of the cylinder, the bottom of the cylinder is connected to the straw, and a steel ball is arranged inside the cylinder.

[0006] Preferably: a socket is provided inside the head cap, and an annular slot is provided on the inner wall of the socket.

[0007] Preferably: the valve stem includes an upper fixing part and a lower supporting part, the outer diameter of the fixing part is smaller than the outer diameter of the supporting part, the outer wall of the fixing part is provided with ribs, a clamping sleeve is provided inside the fixing part, an annular outer spring upper receiving groove is provided inside the supporting part, and the valve stem is located inside the outer spring upper receiving groove and is provided with an inner spring upper support area.

[0008] Preferably, a raised portion is provided on the upper portion of the bushing, a first convex ring is provided in the middle portion of the bushing, an inserting portion is provided on the bottom portion of the bushing, a second convex ring is further provided in the middle portion of the bushing, and an outer spring lower accommodating groove is provided on the inner wall of the bushing.

[0009] Preferably, the middle sleeve includes an upper sleeve and a lower sleeve, the top wall of the upper sleeve is provided with a first sealing groove, a support protrusion is further provided inside the upper sleeve, and the top wall of the lower sleeve is provided with a second sealing groove, and the second sealing groove is used to install a gasket.

[0010] Preferably, the inner wall of the bottom of the lower sleeve is provided with middle sleeve protrusions arranged in a ring shape, and the bottom of the lower sleeve is also provided with a plurality of grooves.

[0011] Preferably: the upper end of the piston is provided with an inner spring lower support area, the upper end of the piston is provided with an annular upper groove, the lower end of the piston is provided with a lower groove, the inner wall of the lower groove is provided with a bevel, the piston is installed inside the cylinder, and the piston and the cylinder form a cavity structure for accommodating liquid.

[0012] Preferably, the valve needle comprises a needle body and a sealing ring, the upper end surface of the sealing ring is inclined, a liquid outlet is provided inside the needle body, a liquid inlet is provided at the bottom of the needle body, and an annular groove is provided on the outer wall of the upper portion of the needle body.

[0013] Preferably, an air pressure balance hole is provided on the outer wall of the cylinder, a pipe interface is provided at the bottom of the cylinder, and an accommodating cavity is provided above the pipe interface. The accommodating cavity is used to place steel balls, and a plurality of inclined ribs are provided in a ring shape on the upper part of the accommodating cavity.

[0014] Preferably, the upper outer wall of the cylinder is provided with a second outer rib, the upper outer wall of the cylinder is provided with a first outer rib below the second outer rib, and the upper interior of the cylinder is further provided with an inner groove for clamping the second convex ring.

[0015] Technical effects and advantages of the present invention:

[0016] 1. In the present invention, the valve stem is located on the inner side of the receiving groove of the outer spring and is provided with an inner spring upper support area. When the valve stem is installed, it is inserted into the bushing to prevent the valve stem from being skewed.

[0017] 2. In the present invention, a first convex ring is provided in the middle of the bushing. The outer diameter of the first convex ring is larger than the outer diameter of the raised portion. The first convex ring is fitted on the top surface of the middle sleeve to improve the sealing performance.

[0018] 3. In the present invention, the needle body and the valve stem are connected together, and the inclination angle of the sealing ring bevel is the same as the inclination angle of the hypotenuse, so that the sealing ring can be tightly attached to the hypotenuse to achieve a sealing effect.

[0019] 4. In the present invention, a plurality of inclined ribs are provided in a ring shape on the upper part of the accommodating cavity to prevent the steel balls from falling out of the accommodating cavity.

[0020] 5. This sprayer is designed to be short and beautiful, and has a double spring structure. The metal spring is placed outside the valve needle to avoid adverse chemical reactions caused by contact between the contents and the metal spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG1 is an exploded view of a short external double-spring sprayer provided in an embodiment of the present application;

[0022] FIG2 is a schematic structural diagram of a short external double-spring sprayer provided in an embodiment of the present application;

[0023] FIG3 is a cross-sectional view of a short external double-spring sprayer provided in an embodiment of the present application;

[0024] FIG4 is a schematic structural diagram of a head cap in a short external double-spring sprayer provided in an embodiment of the present application;

[0025] FIG5 is a schematic structural diagram of a valve stem in a short external double-spring sprayer provided in an embodiment of the present application;

[0026] FIG6 is a cross-sectional view of a valve stem in a short external dual-spring sprayer provided in an embodiment of the present application;

[0027] FIG7 is a schematic structural diagram of a bushing in a short external double-spring sprayer provided in an embodiment of the present application;

[0028] FIG8 is a cross-sectional view of a bushing in a short external double-spring sprayer provided in an embodiment of the present application;

[0029] FIG9 is a schematic structural diagram of a middle sleeve in a short external double-spring sprayer provided in an embodiment of the present application;

[0030] FIG10 is a cross-sectional view of the middle sleeve of the short external double-spring sprayer provided in an embodiment of the present application;

[0031] FIG11 is a schematic structural diagram of a piston in a short external double-spring sprayer provided in an embodiment of the present application;

[0032] FIG12 is a cross-sectional view of a piston in a short external dual-spring sprayer according to an embodiment of the present application;

[0033] FIG13 is a schematic diagram of the structure of a valve needle in a short external double-spring sprayer provided in an embodiment of the present application;

[0034] FIG14 is a cross-sectional view of a valve needle in a short external dual-spring sprayer according to an embodiment of the present application;

[0035] FIG15 is a schematic diagram of the structure of the cylinder of the short external double-spring sprayer provided in an embodiment of the present application;

[0036] FIG16 is a cross-sectional view of the cylinder of the short external double-spring sprayer provided in an embodiment of the present application.

[0037] In the figure: 1, head cap outer cover; 2, spray plate; 3, head cap; 31, socket; 32, slot; 4, valve stem; 41, fixing portion; 42, supporting portion; 43, rib; 44, sleeve; 45, outer spring upper receiving groove; 46, inner spring upper supporting area; 5, outer spring; 6, inner spring; 7, bushing; 71, raised portion; 72, first raised ring; 73, inserting portion; 74, second raised ring; 75, outer spring lower receiving groove; 8, middle sleeve; 81, upper sleeve; 82, lower sleeve; 83, first sealing groove; 84, supporting protrusion; 85, second sealing groove; 86, middle sleeve protrusion; 87, groove; 9, Gasket; 10. Piston; 101. Upper groove; 102. Lower support area of ​​inner spring; 103. Lower groove; 104. Bevel; 11. Valve needle; 111. Needle body; 112. Sealing ring; 113. Liquid outlet; 114. Liquid inlet; 115. Annular groove; 12. Cylinder; 121. Air pressure balance hole; 122. Pipe interface; 123. First outer rib; 124. Inner groove; 125. Accommodating chamber; 126. Inclined rib; 127. Second outer rib; 13. Steel ball; 14. Straw. DETAILED DESCRIPTION

[0038] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described to better illustrate the principles of the invention and its practical application, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for specific applications.

[0039] Please refer to Figures 1 to 3. In this embodiment, a short external double-spring sprayer is provided, including a head cap outer cover 1, a head cap 3 is arranged inside the head cap outer cover 1, and a spray piece 2 is arranged at the front end of the head cap 3. The spray piece 2 is used to spray the liquid in a mist form. A through hole is opened in the head cap outer cover 1 corresponding to the spray piece 2. The head cap 3 is connected to the valve stem 4, and the valve stem 4 is sleeved on the upper part of the valve needle 11. The valve needle 11 passes through the bushing 7 and the piston 10. The valve needle 11 is also sleeved with an inner spring 6. The upper part of the inner spring 6 is located in the valve stem 4, and the lower end of the inner spring 6 is in contact with the piston 10. , an outer spring 5 is provided on the outside of the inner spring 6, the upper part of the outer spring 5 is located in the middle sleeve 8, and the lower part of the outer spring 5 is located in the bushing 7. The middle sleeve 8 is sleeved on the outside of the bushing 7, and the middle sleeve 8 is connected to the cylinder 12. A gasket 9 is provided inside the middle sleeve 8, and the gasket 9 is sleeved on the outside of the cylinder 12. When the middle sleeve 8 is connected to the bottle body, the gasket 9 plays a sealing role. The bottom of the cylinder 12 is connected to the straw 14, and a steel ball 13 is provided inside the cylinder 12. In this sprayer, a double spring structure is provided, and the metal spring is placed outside the valve needle 11 to avoid adverse chemical reactions caused by contact between the content and the metal spring.

[0040] Furthermore, in this embodiment, as shown in Figure 4, a socket 31 is provided inside the head cap 3, and an annular groove 32 is provided on the inner wall of the socket 31. The socket 31 is connected to the spray plate 2 and is used to insert the valve stem 4. The groove 32 cooperates with the valve stem 4 to connect the valve stem 4 to the socket 31.

[0041] Furthermore, in this embodiment, referring to Figures 5 and 6, the valve stem 4 is hollow, and the valve stem 4 includes an upper fixing portion 41 and a lower supporting portion 42. The outer diameter of the fixing portion 41 is smaller than the outer diameter of the supporting portion 42. The outer wall of the fixing portion 41 is provided with a convex rib 43. When the valve stem 4 is inserted into the socket 31, the convex rib 43 is embedded in the card groove 32 to fix the valve stem 4 to the socket 31. A clamping sleeve 44 is provided inside the fixing portion 41. The valve needle 11 passes through the clamping sleeve 44 from bottom to top along the valve stem 4, and the valve needle 11 is fixed to the valve stem 4 through the clamping sleeve 44. An annular outer spring upper accommodating groove 45 is provided inside the supporting portion 42. The upper part of the outer spring 5 is embedded in the outer spring upper accommodating groove 45. The valve stem 4 is located inside the outer spring upper accommodating groove 45 and is provided with an inner spring upper support area 46. When the valve stem 4 is installed, it is inserted into the bushing 7 to prevent the valve stem 4 from being skewed.

[0042] Furthermore, in this embodiment, referring to Figures 7 and 8, the bushing 7 is hollow, and a protrusion 71 is provided on the upper part of the bushing 7. The outer wall of the protrusion 71 is a smooth surface. The protrusion 71 passes through the middle sleeve 8 from bottom to top, and the upper end surface of the protrusion 71 is higher than the middle sleeve 8, so that when the head cap 3 is pressed, the valve stem 4 remains vertical. A first protruding ring 72 is provided in the middle of the bushing 7. The outer diameter of the first protruding ring 72 is larger than the outer diameter of the protruding portion 71. The first protruding ring 72 is attached to the top surface of the middle sleeve 8 to improve the sealing performance of the bushing. An insertion portion 73 is provided at the bottom of 7, and the outer diameter of the insertion portion 73 is smaller than the outer diameter of the protrusion 71. The insertion portion 73 is used to be inserted into the piston 10. A second protruding ring 74 is further provided in the middle of the bushing 7, and the outer diameter of the second protruding ring 74 is smaller than the outer diameter of the first protruding ring 72. The bushing 7 is inserted into the cylinder 12, and the second protruding ring 74 contacts the inside of the cylinder 12 to play a sealing role. An outer spring lower receiving groove 75 is provided on the inner wall of the bushing 7, and the bottom of the outer spring 5 is located in the outer spring lower receiving groove 75, which supports the outer spring 5.

[0043] 9 and 10, the middle sleeve 8 is hollow and includes an upper sleeve 81 and a lower sleeve 82. The outer diameter of the lower sleeve 82 is larger than the outer diameter of the upper sleeve 81. The upper sleeve 81 is used to insert the protrusion 71. The top wall of the upper sleeve 81 is provided with a first sealing groove 83. The first sealing groove 83 is used to close the upper surface of the first protruding ring 72 to play a sealing role. The upper sleeve 81 is also provided with a supporting protrusion 84. The supporting protrusion 84 is annular. The top wall of the lower sleeve 82 is provided with a second sealing groove 85. The second sealing groove 85 is used to install the gasket 9. The inner wall of the bottom of the lower sleeve 82 is provided with a middle sleeve protrusion 86 arranged in an annular shape for connecting with the bottle mouth. The bottom of the lower sleeve 82 is also provided with a plurality of grooves 87. The lower sleeve 82 is sleeved on the bottle mouth. The grooves 87 make the bottom of the lower sleeve 82 easy to deform, making it easy to sleeve the lower sleeve 82 on the bottle mouth.

[0044] In this embodiment, referring to Figures 11 and 12, the piston 10 is hollow, and an inner spring lower support area 102 is provided at the upper end of the piston 10. An annular upper groove 101 is provided at the upper end of the piston 10, and the upper groove 101 is used to embed the insertion portion 73. A lower groove 103 is provided at the lower end of the piston 10, and a bevel 104 is provided on the inner wall of the lower groove 103. The bevel 104 is annular and is used to cooperate with the valve needle 11 to achieve a sealing effect. The piston 10 is installed inside the cylinder 12 and can slide along the cylinder 12. The piston 10 and the cylinder 12 form a cavity structure for accommodating liquid.

[0045] In this embodiment, referring to Figures 13 and 14, the valve needle 11 includes a needle body 111 and a sealing ring 112. The upper end face of the sealing ring 112 is inclined, a liquid outlet 113 is provided inside the needle body 111, and a liquid inlet 114 is provided at the bottom of the needle body 111, so that liquid can enter from the liquid inlet 114 and flow out from the liquid outlet 113. An annular groove 115 is provided on the upper outer wall of the needle body 111. When the upper part of the needle body 111 is inserted into the valve stem 4, the ferrule 44 of the valve stem 4 is embedded in the annular groove 115, connecting the needle body 111 and the valve stem 4 together. The inclination angle of the inclined surface of the sealing ring 112 is the same as the inclination angle of the inclined edge 104, so that the sealing ring 112 can be tightly attached to the inclined edge 104, thereby achieving a sealing effect.

[0046] In this embodiment, referring to Figures 15 and 16, an air pressure balance hole 121 is provided on the outer wall of the cylinder 12, a pipe interface 122 is provided at the bottom of the cylinder 12, the pipe interface 122 is connected to the straw 14, and the cylinder 12 is provided with a receiving chamber 125 above the pipe interface 122. The receiving chamber 125 is used to place the steel ball 13, and the steel ball 13 can move up and down along the receiving chamber 125. The upper part of the receiving chamber 125 is annularly provided with a plurality of inclined ribs 126 to prevent the steel ball 13 from falling off from the receiving chamber 125. When the steel ball 13 is at the bottom of the receiving chamber 125, At the same time, the pipe interface 122 is blocked, and the bottom of the cylinder 12 is in a sealed state. When the steel ball 13 is separated from the bottom of the accommodating chamber 125 under the action of atmospheric pressure, the liquid enters the accommodating chamber 125 through the suction pipe 14 and the pipe interface 122, and then flows into the interior of the cylinder 12 from the gap between the steel ball 13 and the accommodating chamber 125, and the liquid is stored in the cavity structure formed by the piston 10 and the cylinder 12, waiting for the next liquid discharge. Furthermore, the upper outer wall of the cylinder 12 is provided with a second outer rib 127, and the cylinder 12 is inserted into the middle sleeve 8 from bottom to top. The second outer rib 127 Insert the upper end of the support protrusion 84 to support the cylinder 12 through the support protrusion 84 to prevent the cylinder 12 from falling off through the middle sleeve 8. The upper outer wall of the cylinder 12 is located below the second outer rib 127 and is provided with a first outer rib 123. The first outer rib 123 is used to fit on the upper surface of the gasket 9 to seal and prevent the liquid from flowing out of the gap between the middle sleeve 8 and the cylinder 12. An inner groove 124 is also provided inside the upper part of the cylinder 12. The inner groove 124 is used to clamp the second convex ring 74. The bushing 7 is inserted into the cylinder 12, and the second convex ring 74 is inserted into the inner groove 124 to connect the bushing 7 and the cylinder 12 together to prevent the bushing 7 and the cylinder 12 from loosening.

[0047] The working principle of the present invention is:

[0048] When in use, press the head cap outer cover 1 downward, the head cap 3 and the spray piece 2 move downward, the head cap 3 squeezes the valve stem 4 and the valve needle 11 downward, the valve stem 4 squeezes the upper end of the outer spring 5 and the inner spring 6 downward, squeezes the bushing 7 at the lower end of the outer spring 5 and moves downward along the middle sleeve 8, and at the same time, the lower end of the inner spring 6 squeezes the piston 10 and moves downward along the cylinder 12 to squeeze the liquid in the cavity structure. At this time, air enters the cylinder 12 from the air pressure balance hole 121, so that the air pressure in the space above the piston 10 in the cylinder 12 is in a balanced state, and the steel ball 13 is tightly attached to the accommodating cavity 12. At the bottom of the valve body 5, the pipe interface 122 is in a sealed state, and the liquid will not flow out of the pipe interface 122. The space of the cavity structure formed by the piston 10 and the cylinder 12 gradually decreases. The liquid in the cavity structure flows upward and squeezes the piston 10 to move upward. A relative displacement occurs between the piston 10 and the valve needle 11. The upper surface of the sealing ring 112 of the valve needle 11 separates from the bevel 104 of the piston 10, exposing the liquid inlet 114. The liquid flows through the lower groove 103, enters the liquid outlet 113 from the liquid inlet 114, and then enters the head cap 3, and is sprayed out from the spray piece 2 in the form of mist.

[0049] Loosen the head cap cover 1. Under the elastic force of the outer spring 5 and the inner spring 6, the valve stem 4, the valve needle 11 and the piston 10 are gradually reset. The cavity structure space formed by the piston 10 and the cylinder 12 gradually increases, generating negative pressure. At this time, the steel ball 13 is pushed upward by the atmospheric pressure. The liquid in the straw 14 enters the cavity structure through the gap between the steel ball 13 and the accommodating chamber 125. The outer spring 5 and the inner spring 6 are reset. The valve stem 4, the valve needle 11 and the piston 10 are reset. The liquid is stored in the cavity structure and waits for the next liquid discharge.

[0050] Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without making creative efforts should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention shall be implemented in accordance with conventional means in the field unless otherwise specified or limited.

Claims

1. A short external double spring sprayer, comprising a head cap cover (1), characterized in that: A head cap (3) is arranged inside the head cap outer cover (1), a spray plate (2) is arranged at the front end of the head cap (3), the head cap (3) is connected to the valve stem (4), the valve stem (4) is sleeved on the upper part of the valve needle (11), the valve needle (11) passes through the bushing (7) and the piston (10), the valve needle (11) is also sleeved with an inner spring (6), the upper part of the inner spring (6) is located in the valve stem (4), the lower end of the inner spring (6) is in contact with the piston (10), and the inner spring (6) ) is provided on the outside of the cylinder (12), the upper part of the outer spring (5) is located in the middle sleeve (8), the lower part of the outer spring (5) is located in the bushing (7), the middle sleeve (8) is sleeved on the outside of the bushing (7), the middle sleeve (8) is connected to the cylinder (12), a gasket (9) is provided inside the middle sleeve (8), the gasket (9) is sleeved on the outside of the cylinder (12), the bottom of the cylinder (12) is connected to the suction pipe (14), and a steel ball (13) is provided inside the cylinder (12).

2. The short external double spring sprayer according to claim 1, characterized in that: The head cap (3) is provided with a socket (31) inside, and an annular slot (32) is provided on the inner wall of the socket (31).

3. The short external double spring sprayer according to claim 1, characterized in that: The valve stem (4) comprises an upper fixing portion (41) and a lower supporting portion (42); the outer diameter of the fixing portion (41) is smaller than the outer diameter of the supporting portion (42); a convex rib (43) is arranged on the outer wall of the fixing portion (41); a clamping sleeve (44) is arranged inside the fixing portion (41); an annular outer spring upper receiving groove (45) is arranged inside the supporting portion (42); and an inner spring upper supporting area (46) is arranged on the inner side of the outer spring upper receiving groove (45) of the valve stem (4).

4. The short external double spring sprayer according to claim 1, characterized in that: The bushing (7) is provided with a raised portion (71) at the top, a first raised ring (72) at the middle, an insertion portion (73) at the bottom, a second raised ring (74) at the middle, and an outer spring lower receiving groove (75) at the inner wall of the bushing (7).

5. The short external double spring sprayer according to claim 1, characterized in that: The middle sleeve (8) comprises an upper sleeve (81) and a lower sleeve (82); the upper sleeve (81) has a first sealing groove (83) on its top wall, a supporting protrusion (84) is also provided inside the upper sleeve (81), and the lower sleeve (82) has a second sealing groove (85) on its top wall, the second sealing groove (85) being used for mounting a gasket (9).

6. The short external double spring sprayer according to claim 5, characterized in that: The inner wall of the bottom of the lower sleeve (82) is provided with middle sleeve protrusions (86) arranged in a ring shape, and the bottom of the lower sleeve (82) is also provided with a plurality of grooves (87).

7. The short external double spring sprayer according to claim 1, characterized in that: The upper end of the piston (10) is provided with an inner spring lower support area (102), the upper end of the piston (10) is provided with an annular upper groove (101), the lower end of the piston (10) is provided with a lower groove (103), the inner wall of the lower groove (103) is provided with a bevel (104), the piston (10) is installed inside the cylinder (12), and the piston (10) and the cylinder (12) form a cavity structure for containing liquid.

8. The short external double spring sprayer according to claim 7, characterized in that: The valve needle (11) comprises a needle body (111) and a sealing ring (112); the upper end surface of the sealing ring (112) is an inclined surface; a liquid outlet hole (113) is provided inside the needle body (111); a liquid inlet (114) is provided at the bottom of the needle body (111); and an annular groove (115) is provided on the upper outer wall of the needle body (111).

9. The short external double spring sprayer according to claim 1, characterized in that: An air pressure balance hole (121) is provided on the outer wall of the cylinder (12); a pipe interface (122) is provided at the bottom of the cylinder (12); a receiving chamber (125) is provided above the pipe interface (122) of the cylinder (12); the receiving chamber (125) is used to place the steel ball (13); and a plurality of inclined ribs (126) are provided in an annular shape on the upper part of the receiving chamber (125).

10. The short external double spring sprayer according to claim 9, characterized in that: The upper outer wall of the cylinder (12) is provided with a second outer rib (127), the upper outer wall of the cylinder (12) is provided with a first outer rib (123) below the second outer rib (127), and the upper interior of the cylinder (12) is also provided with an inner groove (124), which is used to clamp the second convex ring (74).

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