A springless check valve for a lotion pump

Abstract

The utility model discloses a kind of springless check valves for emulsion pump, including valve body, the valve body is provided with liquid inlet end and liquid outlet end, the liquid inlet end and liquid outlet end are communicated and are formed with hole channel;Elastic tube for preventing medium backflow, the first end of the elastic tube movably sets on the hole channel outer wall corresponding with the liquid outlet end, the second end of the elastic tube sets on the hole channel outer wall corresponding with the liquid inlet end;Fixing piece, the fixing piece is fixed to the liquid outlet end of the valve body, outlet passage is set on the fixing piece and is communicated with the liquid outlet end, the utility model simplifies the structure of one-way medium transmission, simultaneously improve the anti-pollution ability of springless check valve.

Description

Technical Field

[0001] This utility model relates to the field of one-way valve technology, specifically to a springless one-way valve for emulsion pumps. Background Technology

[0002] A check valve typically consists of a valve body, a valve disc, and a spring. The valve body is the main part of the check valve, the valve disc controls the flow direction of the medium, and the spring assists in resetting the valve disc. Check valves are mainly used to prevent backflow of the medium and protect other equipment in the system from damage. When the medium flows in the forward direction, the valve disc is pushed open, allowing the medium to pass smoothly. When the medium flows in the reverse direction, the valve disc is tightly pressed against the valve body by the spring, effectively preventing backflow. This characteristic makes check valves widely used in hydraulic systems, pneumatic systems, and various fluid transmission systems.

[0003] Traditional and commonly used outlet check valves include several types such as jewel ball type, diaphragm type, and O-ring type. The objective disadvantages of existing technologies are: jewel ball check valves rely on the high-precision fit between the ball and the valve seat, have high requirements for liquid cleanliness, and the ball surface is easily contaminated, causing backflow in the check valve; diaphragm check valves are susceptible to pressure, temperature, media corrosion, and fatigue, resulting in short lifespan and delayed opening and closing; O-ring check valves have the risk of extrusion, permanent deformation, poor reverse sealing ability, are prone to wear, and have a short lifespan. Utility Model Content

[0004] The purpose of this invention is to provide a springless check valve for emulsion pumps, which simplifies the check valve structure, makes the opening and closing action more direct, prevents media backflow, and avoids backflow of the check valve due to contamination.

[0005] To overcome the above problems, this utility model provides a springless one-way valve for an emulsion pump, comprising: a valve body having an inlet end and an outlet end, the inlet end and the outlet end being interconnected and forming a channel; an elastic tube for preventing backflow of the medium, the first end of the elastic tube being movably sleeved on the outer wall of the channel corresponding to the outlet end, and the second end of the elastic tube being sleeved on the outer wall of the channel corresponding to the inlet end; and a fixing member, the fixing member being fixed to the outlet end of the valve body, the fixing member having an outlet channel communicating with the outlet end.

[0006] Preferably, the outlet end of the valve body is provided with a sleeve, the first end of the sleeve is provided with a cap, the second end of the sleeve is connected to the channel, and the circumferential sidewall of the sleeve is provided with a plurality of through holes arranged at intervals and connected to the channel.

[0007] Preferably, the sleeve includes a first pipe fitting and a second pipe fitting sleeved on the outer wall of the channel, the first end of the first pipe fitting is provided with the cap, and the second end of the first pipe fitting and the first end of the second pipe fitting are correspondingly connected.

[0008] Preferably, the diameter of the second pipe gradually increases from its first end to its second end.

[0009] Preferably, the first pipe fitting and the second pipe fitting are integrally formed.

[0010] Preferably, the first pipe fitting has a plurality of through holes arranged at intervals on its circumferential sidewall.

[0011] Preferably, the first pipe fitting is provided with multiple layers of through holes.

[0012] Preferably, a pressure ring is fixed between the fixing member and the second pipe fitting.

[0013] Preferably, the valve body and the fixing member are detachably connected to each other.

[0014] Preferably, the elastic tube is made of rubber material.

[0015] Beneficial effects: The design of using a rubber elastic tube sleeve at the liquid outlet is different from the traditional spring structure design to prevent backflow of the medium. It utilizes the elasticity of the rubber elastic tube itself to reset, thereby controlling the backflow of the medium at the liquid outlet. Meanwhile, the rubber elastic tube is a flexible material and the sealing surface is flexible. Small particles will be washed away with the fluid, making it less likely to cause permanent jamming. This greatly reduces the cleanliness of the fluid and avoids backflow of the one-way valve due to contamination. It also has good dirt resistance. 3. This type of check valve has a simple structure, which simplifies the number of parts in traditional check valves, making it easy to disassemble and assemble, and convenient for maintenance. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of this embodiment; Figure 2 This is a partial enlarged view of this embodiment.

[0017] In the figure, 1 is the valve body; 11 is the inlet end; 111 is the channel; 12 is the outlet end; 13 is the sleeve; 131 is the first fitting; 132 is the second fitting; 14 is the through hole; 2 is the fixing part; 21 is the outlet channel; 22 is the pressure ring; and 3 is the elastic tube. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0019] Combination Figures 1 to 2 This embodiment illustrates a springless one-way valve for an emulsion pump, comprising: a valve body 1, which has an inlet end 11 and an outlet end 12, the inlet end 11 and the outlet end 12 being interconnected and forming a channel 111; an elastic tube 3 for preventing backflow of the medium, the first end of the elastic tube 3 being movably sleeved on the outer wall of the channel 111 corresponding to the outlet end 12, and the second end of the elastic tube 3 being sleeved on the outer wall of the channel 111 corresponding to the inlet end 11; and a fixing member 2, which is fixed to the outlet end 12 of the valve body 1, and the fixing member 2 has an outlet channel 21 communicating with the outlet end 12.

[0020] The main feature of this embodiment that enables unidirectional flow of the medium is that the first end of the elastic tube 3 is sleeved on the outer wall of the channel 111 corresponding to the liquid outlet 12, that is, the elastic tube 3 elastically covers the liquid outlet 12, and the second end of the elastic tube 3 is sleeved on the outer wall of the channel 111 corresponding to the liquid inlet 11. The fixing member 2 is used to stabilize the elastic tube 3 sleeved on the outer wall of the channel 111. When high-pressure medium is input from the liquid inlet 11, due to the elasticity of the elastic tube 3, the high-pressure medium overcomes the elasticity of the elastic tube 3, so the medium will push open the opening of the elastic tube 3 through the liquid outlet 12, and the medium will flow out from the liquid outlet 12. Furthermore, the medium will flow into the target space from the liquid outlet channel 21 in the fixing member 2. When the medium is stopped, the raised part of the elastic tube 3 is automatically reset by the elastic contraction of the elastic tube 3 itself, forming a cut-off check and preventing the medium from flowing in reverse, thus achieving a unidirectional effect.

[0021] Preferably, the orifice 111 is circular in shape, which is convenient for processing. The orifice 111 is axially opened from one end face of the valve body 1, and the orifice 111 does not penetrate the other end face of the first valve body 1. The liquid inlet end 11 is the starting end of the medium entering the orifice 111, and the top along the medium flow is the end of the orifice 111. These through holes 14 are evenly distributed at the end of the orifice 111 to form the liquid outlet end 12. The through holes 14 are circular in shape to ensure that the medium can flow out of the orifice 111 evenly and avoid the medium from flowing out with bias or local high pressure.

[0022] The outlet end 12 of the valve body 1 is provided with a sleeve 13. The first end of the sleeve 13 is provided with a cap, and the second end of the sleeve 13 is connected to the channel 111. Multiple through holes 14, which are arranged at intervals and connected to the channel 111, are provided on the circumferential side wall of the sleeve 13.

[0023] Among them, the channels 111 on the circumferential sidewall of the sleeve 13 further optimize the outflow effect of the medium. By setting them at intervals, it not only ensures that the medium can flow out uniformly and stably from all directions, but also effectively avoids mutual interference of the medium during the outflow process, thereby improving the flow efficiency of the medium.

[0024] It should be noted that the shape, size and number of these through holes 14 can be adjusted according to actual needs to meet the requirements of different media and working conditions. Preferably, multiple through holes 14 are opened on the circumferential sidewall of the sleeve 13 and are arranged in a uniform ring. The arrangement of these through holes 14 further enhances the outflow effect of the media. They not only increase the outflow area of ​​the media, allowing the media to flow out more smoothly from the through holes 14 on the sleeve 13, but also avoid mutual obstruction of the media during the outflow process through the intermittent arrangement, thereby further improving the flow efficiency of the media.

[0025] The sleeve 13 includes a first pipe fitting 131 and a second pipe fitting 132 sleeved on the outer wall of the channel 111. The first end of the first pipe fitting 131 is provided with a cap, and the second end of the first pipe fitting 131 and the first end of the second pipe fitting 132 are connected accordingly.

[0026] The diameter of the second pipe fitting 132 gradually increases from its first end to its second end.

[0027] This gradually expanding design, on the one hand, allows the second pipe fitting 132 and the fixing member 2 to form a compression sealing structure. The fixing member 2 is provided with a liquid outlet channel 21, and the liquid inlet end of the liquid outlet channel 21 is provided with a compression mating surface, which effectively ensures that the second end of the elastic tube 3 is sealed and tightly assembled on the outer wall of the second pipe fitting 132. On the other hand, it also optimizes the flow path of the medium and improves the diffusion efficiency of the fluid. Specifically, the gradual increase in diameter allows the medium to expand naturally when flowing out of the second pipe fitting 132, avoiding turbulence or pressure loss caused by excessive local flow velocity, thereby further improving the uniformity and stability of the overall flow.

[0028] The first fitting 131 and the second fitting 132 are integrally formed.

[0029] There are many ways to achieve one-piece molding. When using plastic parts, injection molding can be used, and when using metal parts, casting can be used. This one-piece structure significantly improves the sealing performance and structural strength of the sleeve 13 by eliminating connection gaps, avoiding possible leakage or turbulence during the flow of the medium. At the same time, one-piece molding simplifies the manufacturing process, reduces assembly steps, lowers production costs, and ensures a smooth transition between the first pipe fitting 131 and the second pipe fitting 132. In conjunction with the gradually expanding diameter of the second pipe fitting 132 and the arrangement of the through hole 14, it further optimizes the diffusion path of the medium, promotes the uniform and stable efficient flow of fluid from the through hole 14, and thus enhances the overall flow performance and reliability of the one-way valve.

[0030] The first pipe fitting 131 has a plurality of through holes 14 arranged at intervals on its circumferential sidewall.

[0031] The through-hole 14 is located on the first fitting 131, providing sufficient space for the elastic tube 3 to be limited and supported. Furthermore, a sealing contact surface matching the inner wall of the elastic tube 3 is formed inside the through-hole 14. When the elastic tube 3 expands under medium pressure, its inner wall tightly fits the inner edge of the through-hole 14, forming a reliable circumferential seal. When the pressure disappears and the elastic tube 3 retracts, the pressing fit between the second fitting 132 and the valve body 1 guides it to uniformly reset, avoiding local wrinkles or displacement and ensuring the integrity of the sealing contact surface. This design ensures zero leakage of the check valve in the closed state and reduces stress concentration during repeated deformation of the elastic tube 3 through precise geometric fit, extending the service life of key sealing elements.

[0032] The first pipe fitting 131 is provided with multiple layers of through holes 14.

[0033] The multi-layer through-hole 14 includes at least two layers of hole arrays uniformly distributed along the axial direction of the first pipe fitting 131. Each layer contains multiple circumferentially spaced holes, and the hole diameter is optimized according to the medium flow requirements. For example, the diameter of the upper layer hole is slightly smaller than that of the lower layer hole to guide the medium to flow out in layers. This arrangement avoids accumulation in a single location, reduces flow resistance, ensures uniform distribution of fluid between multiple layers, and works in conjunction with the gradually expanding diameter of the second pipe fitting 132 and the through-hole 14 to form a stepped diffusion path, further improving the overall flow efficiency and stability of the medium, while reducing the risk of turbulence.

[0034] A pressure ring 22 is fixed between the fastener 2 and the second pipe fitting 132.

[0035] Preferably, the pressure ring 22 has a hollow frustum shape. The second end of the elastic tube 3 first engages with the outer wall of the second tube 132, and the pressure ring 22 is passed through the first tube 131 and engages with the elastic tube 3 on the outer wall of the second tube 132.

[0036] The valve body 1 and the fixing part 2 are detachably connected to each other.

[0037] It should be noted that the valve body 1 and the fixing part 2 are both made of plastic or metal. The valve body 1 and the fixing part 2 are detachably connected to each other. There are various ways to detachably connect them. In this embodiment, screws are used for connection. By connecting the valve body 1 and the fixing part 2 with screws, a pre-tightening force is provided to press the elastic tube 3. This not only provides sufficient fastening force, but also facilitates installation and disassembly, improves the convenience of maintenance, and effectively prevents the elastic tube 3 from loosening or falling off when the medium flows at high pressure or high speed.

[0038] The elastic tube 3 is made of rubber material.

[0039] It should be noted that the elastic tube 3 is a hollow rubber tube. The elastic tube 3 possesses excellent elasticity and sealing performance, effectively ensuring the valve's sealing effect when closed and preventing backflow of the medium. Simultaneously, the rubber material exhibits strong corrosion resistance, adapting to the transportation requirements of various media and extending the valve's service life. Furthermore, the design of the elastic tube 3 also considers ease of installation, making valve disassembly and assembly more convenient, facilitating later maintenance and replacement.

[0040] Working principle: When emulsion or other fluid media flow into the valve body 1 from the inlet end, the pressure of the media acts on the inner wall of the elastic tube 3, causing the elastic tube 3 to undergo elastic deformation and expand, thereby opening the fluid channel and allowing the media to flow smoothly to the outlet end. During this process, the pre-tightening force provided by the valve body 1 and the fixing part 2 through the screw connection ensures that the elastic tube 3 is stably pressed, and can maintain tightness even under high pressure or high speed flow conditions, preventing the elastic tube 3 from shifting or falling off. When the media supply stops or there is a reverse flow trend, the elastic tube 3 quickly returns to its initial state under the action of its own elasticity and pre-tightening force, and its rubber outer wall tightly fits the inner wall of the valve body 1 to form an efficient seal, effectively blocking the backflow of the media.

[0041] In summary, this springless design not only simplifies the valve structure and reduces potential failure points, but also improves the reliability and service life of the valve during frequent opening and closing operations.

[0042] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A springless check valve for an emulsion pump, characterized in that, include: The valve body is provided with an inlet end and an outlet end, which are interconnected and form a channel. An elastic tube for preventing backflow of medium, wherein the first end of the elastic tube is movably sleeved on the outer wall of the channel corresponding to the liquid outlet end, and the second end of the elastic tube is sleeved on the outer wall of the channel corresponding to the liquid inlet end; A fixing component is provided, which is fixed to the liquid outlet end of the valve body, and the fixing component has a liquid outlet channel communicating with the liquid outlet end.

2. The springless check valve for an emulsion pump according to claim 1, characterized in that, The valve body is provided with a sleeve at the liquid outlet end. The first end of the sleeve is provided with a cap. The second end of the sleeve is connected to the channel. The circumferential sidewall of the sleeve is provided with a plurality of through holes arranged at intervals and connected to the channel.

3. The springless check valve for an emulsion pump according to claim 2, characterized in that, The sleeve includes a first pipe fitting and a second pipe fitting sleeved on the outer wall of the channel. The first end of the first pipe fitting is provided with the cap, and the second end of the first pipe fitting and the first end of the second pipe fitting are connected accordingly.

4. The springless check valve for an emulsion pump according to claim 3, characterized in that, The diameter of the second pipe gradually increases from its first end to its second end.

5. The springless check valve for an emulsion pump according to claim 4, characterized in that, The first pipe fitting and the second pipe fitting are integrally formed.

6. The springless check valve for an emulsion pump according to claim 3, characterized in that, The first pipe fitting has a plurality of through holes arranged at intervals on its circumferential sidewall.

7. The springless check valve for an emulsion pump according to claim 6, characterized in that, The first pipe fitting has multiple layers of through holes.

8. The springless check valve for an emulsion pump according to claim 7, characterized in that, A pressure ring is fixed between the fastener and the second pipe fitting.

9. The springless check valve for an emulsion pump according to claim 1, characterized in that, The valve body and the fixing component are detachably connected to each other.

10. The springless check valve for an emulsion pump according to claim 1, characterized in that, The elastic tube is made of rubber material.

Images