Throttle valve with overflow function

Abstract

The utility model discloses a throttle valve with an overflow function, which comprises a throttle valve structure, the throttle valve structure is in threaded sealing connection with a filtering structure, a flow detector is in threaded sealing connection between the filtering structure and the throttle valve structure, the throttle valve structure comprises a throttle valve shell, a storage box is fixed on the upper side of the throttle valve shell, and the storage box is connected with the filtering structure. A storage battery is embedded in the storage box, the storage box telescopically adjusts the position of a spring shaft through a telescopic structure, a fixing rod is fixed to the lower side of the spring shaft, a double-sealing assembly is fixed to the lower side of the fixing rod, and an overflow assembly is fixed to the fixing rod. Under double sealing of the first sealing piston and the sealing ring, the sealing effect of the liquid inlet is ensured, two sets of overflow ports are formed in the first sealing piston, backflow of redundant fluid is accelerated, and impurities in the fluid are filtered under the auxiliary action of filter screens in the first liquid inlet pipe and the second liquid inlet pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of throttle valves, in particular to a throttle valve with an overflow function. Background Art

[0002] A throttle valve is a valve that controls the flow of a fluid by changing the throttle cross-section or throttle length. Connecting a throttle valve and a check valve in parallel can form a one-way throttle valve. These two valves are simple flow control valves. In a quantitative pump hydraulic system, the throttle valve and the relief valve can be combined to form three types of throttle speed control systems: an inlet throttle speed control system, a return throttle speed control system, and a bypass throttle speed control system. After using an existing throttle valve, excess fluid is stored in the fluid pipe. After the next use, the excess fluid must be pumped out before other fluids can be pumped in. This is not very practical. Furthermore, if the fluid directly enters the throttle valve, impurities in the fluid can easily clog the valve body or increase internal friction, affecting its service life. Utility Model Content

[0003] The purpose of the utility model is to provide a throttle valve with an overflow function to solve the problem in the prior art that, after use, excess liquid is stored in the fluid tube of the existing throttle valve. After the next use, the excess fluid needs to be pumped out before other fluid can be pumped in, which is not very practical. Moreover, when the fluid directly enters the throttle valve, impurities contained in the fluid enter the throttle valve, which can easily clog the valve body or increase the internal friction of the throttle valve, thereby affecting the service life.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a throttle valve with an overflow function, comprising a throttle valve structure, the throttle valve structure is threadedly sealed and connected to a filter structure, a flow detector is threadedly sealed and connected between the filter structure and the throttle valve structure, the throttle valve structure comprises a throttle valve housing, a storage box is fixed on the upper side of the throttle valve housing, a battery is embedded in the storage box, the storage box is telescopically adjusted to adjust the position of the spring shaft through a telescopic structure, a fixing rod is fixed to the lower side of the spring shaft, a double sealing assembly is fixed to the lower side of the fixing rod, and an overflow assembly is fixed on the fixing rod.

[0005] Preferably, the double sealing assembly includes a first sealing piston, which seals the lower liquid inlet. The liquid inlet is opened in the throttle valve housing, and a sealing ring is provided between the liquid inlet and the first sealing piston.

[0006] By adopting the above technical solution, the liquid inlet is sealed by arranging a double sealing component.

[0007] Preferably, the overflow assembly includes a fixed plate, which adjusts the limit plate by telescopic structure, and a second sealing piston is fixed on the lower side of the limit plate, and the second sealing piston seals the overflow port opened on the first sealing piston.

[0008] By adopting the above technical solution, the excess fluid is recovered and collected by arranging an overflow component.

[0009] Preferably, the filter structure includes a filter assembly, and a sealing cover is threadedly connected to the filter structure.

[0010] Preferably, the filter assembly includes a first liquid inlet pipe, the first liquid inlet pipe is threadedly sealed and connected to a second liquid inlet pipe, filter screens are fixed on the second liquid inlet pipe and the first liquid inlet pipe, the first liquid inlet pipe and the second liquid inlet pipe are both connected to a discharge pipe, and the lower side of the discharge pipe is connected to a waste pipe.

[0011] By adopting the above technical solution, the fluid is filtered by setting a filter component.

[0012] Compared with the prior art, the beneficial effects of the present invention are: the throttle valve with overflow function

[0013] (1) A double sealing assembly and an overflow assembly are provided. Under the double sealing of the first sealing piston and the sealing ring, the sealing effect of the liquid inlet is ensured. The setting of two sets of overflow ports on the first sealing piston speeds up the reflux of excess fluid and increases practicality.

[0014] (2) A filtering structure is provided to filter impurities in the fluid with the assistance of the filter screens in the first and second liquid inlet pipes, thereby preventing impurities from entering the throttle valve and affecting the service life of the throttle valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0016] Figure 2 This is a rear view structural diagram of the utility model;

[0017] Figure 3 This is a schematic diagram of the distribution structure of the overflow component of the utility model on the double sealing component;

[0018] Figure 4 This is a schematic diagram of the filtering structure of the utility model;

[0019] Figure 5 It is a three-dimensional schematic diagram of the throttle valve structure of the utility model.

[0020] In the figure: 1. Throttle valve structure; 11. Throttle valve housing; 12. Storage box; 13. Battery; 14. Spring shaft; 15. Fixed rod; 16. Double sealing assembly; 161. First sealing piston; 162. Sealing ring; 163. Liquid inlet; 17. Overflow assembly; 171. Fixed plate; 172. Limiting plate; 173. Second sealing piston; 174. Overflow; 2. Filter structure; 21. Filter assembly; 211. First liquid inlet pipe; 212. Second liquid inlet pipe; 213. Filter screen; 214. Discharge pipe; 215. Waste pipe; 22. Sealing cover; 3. Flow detector. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-5 The utility model provides a technical solution: a throttle valve with overflow function such as Figure 1 、 Figure 2 、 Figure 3 and Figure 5 As shown, the throttle valve structure 1 includes a throttle valve housing 11, a storage box 12 is fixed on the upper side of the throttle valve housing 11, a battery 13 is embedded in the storage box 12, the storage box 12 adjusts the position of the spring shaft 14 through a telescopic structure, a fixing rod 15 is fixed on the lower side of the spring shaft 14, a double sealing assembly 16 is fixed on the lower side of the fixing rod 15, an overflow assembly 17 is fixed on the fixing rod 15, the double sealing assembly 16 includes a first sealing piston 161, the first sealing piston 161 seals the lower liquid inlet 163, which is provided in the throttle valve housing 11. A sealing ring 162 is provided between the liquid inlet 163 and the first sealing piston 161. The overflow assembly 17 includes a fixed plate 171. The fixed plate 171 is telescopically adjusted to adjust the limit plate 172 through a telescopic structure. A second sealing piston 173 is fixed to the lower side of the limit plate 172. The second sealing piston 173 seals the overflow port 174 provided on the first sealing piston 161. The sealing cover 22;

[0023] Among them, a control device for controlling the entire device is fixed in the storage box 12. The telescopic structure in this application is a hydraulic cylinder, which is a prior art. The left side of the throttle valve housing 11 is connected to a liquid outlet pipe;

[0024] Specifically, the first sealing piston 161 is connected with two sets of overflow ports 174, and two sets of second sealing pistons 173 are provided. The two sets of second sealing pistons 173 are symmetrically arranged about the central axis of the first sealing piston 161, and the fixing plate 171 is arranged in an annular shape;

[0025] In the above scheme, the spring shaft 14 is driven downward by the auxiliary action of the hydraulic cylinder in the storage box 12. The downward movement of the spring shaft 14 seals the liquid inlet 163 through the first sealing piston 161 on the fixed rod 15. The setting of the sealing ring 162 between the first sealing piston 161 and the liquid inlet 163 plays a double sealing role. With the auxiliary action of the hydraulic cylinder on the fixed plate 171, the second sealing piston 173 on the limit plate 172 is driven by the hydraulic rod to seal the overflow port 174. A sealing ring 162 is provided between the overflow port 174 and the second sealing piston 173 to ensure the sealing effect. When the fluid needs to be overflow recovered, the second sealing piston 173 is separated from the overflow port 174, and the fluid is overflow recovered through the overflow port 174 to avoid waste of resources.

[0026] like Figure 1 、 Figure 2 and Figure 4 As shown, the throttle valve structure 1 is threadedly and sealedly connected to the filter structure 2, the filter structure 2 includes a filter assembly 21, a sealing cover 22 is threadedly connected to the filter structure 2, the filter assembly 21 includes a first liquid inlet pipe 211, the first liquid inlet pipe 211 is threadedly and sealedly connected to the second liquid inlet pipe 212, a filter screen 213 is fixed to the second liquid inlet pipe 212 and the first liquid inlet pipe 211, the first liquid inlet pipe 211 and the second liquid inlet pipe 212 are both connected to a discharge pipe 214, and the lower side of the discharge pipe 214 is connected to a waste pipe 215;

[0027] Among them, there are two groups of filter components 21, and the two groups of filter components 21 are symmetrically arranged. Two groups of filter screens 213 are set in the first liquid inlet pipe 211. The mesh density of the two groups of filter screens 213 is different. The mesh density of the filter screen 213 in the second liquid inlet pipe 212 is smaller than the filter screen 213 on the lower side of the first liquid inlet pipe 211. The filter screen 213 on the lower side of the first liquid inlet pipe 211 and the filter screen 213 in the second liquid inlet pipe 212 are inclined.

[0028] Specifically, the feed port of the waste pipe 215 is tapered to prevent excessive light impurities from being discharged from the waste pipe 215, thereby increasing the number of subsequent cleaning times.

[0029] Furthermore, the lower side of the first liquid inlet pipe 211 is connected to the liquid inlet pipe, thereby ensuring normal liquid inlet;

[0030] In the above scheme, impurities in the fluid are filtered with the assistance of the filter screen 213 in the first liquid inlet pipe 211 and the second liquid inlet pipe 212, and the filtered impurity mixed liquid is stored in the waste pipe 215 through the discharge pipe 214. The sealing cover 22 is rotated to separate the sealing cover 22 from the first liquid inlet pipe 211, and the waste pipe 215 is rotated to separate the waste pipe 215 from the discharge pipe 214, thereby cleaning the impurities in the waste pipe 215.

[0031] like Figure 1 and Figure 2 As shown, a flow detector 3 is threadedly sealed between the filter structure 2 and the throttle valve structure 1, wherein the flow detector 3 and the throttle valve structure 1 and the filter structure 2 can be disassembled and installed, and the operation is simple and convenient. A sealing ring 162 is provided between the flow detector 3 and the throttle valve structure 1 and the filter structure 2 to ensure a sealing effect;

[0032] In the above solution, the fluid flow is monitored with the assistance of the flow detector 3. When the fluid error is too large, the subsequent staff is reminded, which makes it easier for the subsequent staff to disassemble and clean the filter structure 2, thereby increasing practicality.

[0033] Working principle: When using the throttle valve with overflow function, connect the external power supply, set the throttle valve structure 1 to collect the excess fluid overflow, process the fluid impurities entering the throttle valve with the assistance of the filter structure 2, and monitor the fluid flow in real time with the assistance of the flow detector 3.

[0034] The directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the protection content of the present invention.

[0035] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A throttle valve with overflow function, comprising a throttle valve structure (1), wherein the throttle valve structure (1) is threadedly sealed with a filter structure (2), and a flow detector (3) is threadedly sealed between the filter structure (2) and the throttle valve structure (1), characterized in that: The throttle valve structure (1) comprises a throttle valve housing (11), a storage box (12) is fixed on the upper side of the throttle valve housing (11), a battery (13) is embedded in the storage box (12), the storage box (12) is telescopically adjustable to adjust the position of a spring shaft (14) through a telescopic structure, a fixing rod (15) is fixed on the lower side of the spring shaft (14), a double sealing assembly (16) is fixed on the lower side of the fixing rod (15), and an overflow assembly (17) is fixed on the fixing rod (15).

2. A throttle valve with overflow function according to claim 1, characterized in that: The double sealing assembly (16) includes a first sealing piston (161), which seals a lower liquid inlet (163). The liquid inlet (163) is provided in the throttle valve housing (11), and a sealing ring (162) is provided between the liquid inlet (163) and the first sealing piston (161).

3. A throttle valve with overflow function according to claim 2, characterized in that: The overflow assembly (17) includes a fixed plate (171), the fixed plate (171) is configured to telescopically adjust a limit plate (172) through a telescopic structure, a second sealing piston (173) is fixed to the lower side of the limit plate (172), and the second sealing piston (173) seals the overflow port (174) provided on the first sealing piston (161) to form a sealing cover (22).

4. The throttle valve with overflow function according to claim 1, characterized in that: The filter structure (2) comprises a filter assembly (21), and a sealing cover (22) is threadedly connected to the filter structure (2).

5. A throttle valve with overflow function according to claim 4, characterized in that: The filter assembly (21) comprises a first liquid inlet pipe (211), the first liquid inlet pipe (211) being threadedly and sealingly connected to a second liquid inlet pipe (212), a filter screen (213) being fixed on both the second liquid inlet pipe (212) and the first liquid inlet pipe (211), a discharge pipe (214) being connected to both the first liquid inlet pipe (211) and the second liquid inlet pipe (212), and a waste pipe (215) being connected to the lower side of the discharge pipe (214).

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