WO2019196142A1 - Clogging-proof and jamming-proof constant-temperature valve core - Google Patents

Abstract

Disclosed is a clogging-proof and jamming-proof constant-temperature valve core, comprising an upper housing (1), a lower housing (2), a plunger component (3), a guide rod (4), a spline rod (5), a paraffin wax temperature sensor (6), and a working spring (7). The plunger component comprises a sealing gland (31), a connecting sleeve (32), a plunger upper cover (33), a plunger base (34), and a protective spring (35). The sealing gland (31) and the connecting sleeve (32) can be movably sleeved on the paraffin wax temperature sensor (6). The sealing gland (31) is arranged above the connecting sleeve (32), and, the sealing gland (31) and the connecting sleeve (32) are nested in each other. The top part of the paraffin wax temperature sensor (6) protrudes the sealing gland (31). The top part of the connecting sleeve (32) is abutted against the sealing gland (31). The bottom part of the connecting sleeve (32) is abutted against the paraffin wax temperature sensor (6). The plunger upper cover (33) and the plunger base (34) are movably nested in each other. The top part of the plunger cover (33) is abutted against the sealing gland (31). The bottom part of the plunger base (34) is abutted against the connecting sleeve (32). The protective spring (35) is provided between the plunger upper cover (33) and the plunger base (34), thus allowing the plunger upper cover (33), the protective spring (35), and the plunger base (34) to be locked tightly between the sealing gland (31) and the connecting sleeve (32). The clogging-proof and jamming-proof constant-temperature valve core solves the problem of a valve core being clogged by sediment.

Description

Anti-plugging anti-locking thermostatic valve core Technical field

 The invention relates to the technical field of temperature control valve cores, in particular to an anti-plugging anti-seize thermostatic valve core.

Background technique

The current temperature control valve core is as shown in FIG. 1 , and includes an upper casing 10 , a lower casing 20 , a spline rod 30 , a guide assembly 40 , a plunger 50 , a paraffin warm pack 60 , a working spring 70 , and an upper casing 10 . The lower casing 20 is sleeved, the plunger 50 is slidably disposed in the lower casing 20, and the plunger 50 is placed on the paraffin warm pack 60. When the paraffin warm pack is inflated, the plunger 50 is moved up and guided. The assembly 40 is nested in the upper housing, and the rotating spline rod 30 moves the push guide assembly downward, and the guide assembly 40 will push the paraffin warm pack 60 and the plunger 50 downward;

The cold water and the hot water enter the top and bottom of the plunger 50 from the cold water inlet 201 and the hot water inlet 202 of the lower casing 20, respectively, and flow through the cold water inlet 203 and the column between the plunger 50 and the upper casing 10, respectively. The hot water inlet slit 204 between the plug 50 and the lower casing 20, the plunger 50 moving up or down can adjust the size of the cold water inlet slit 203 and the hot water inlet slit 204, thereby achieving the amount of cold water inflow and heat inflow. The size, cold water flows from the inside of the plunger 50 to the temperature sensing area of the paraffin wax package 60, and is mixed with the hot water, and the temperature of the plunger 50 is sensed by the paraffin temperature package 60 to drive the plunger 50 to realize the temperature self-adjustment. When the keying rod 30 is loosely flowered, the working spring 70 between the plunger 50 and the lower casing 20 drives the plunger 50 to be reset. The existing temperature-controlled spool has the following defects:

1. At present, the temperature-controlled spool plungers 50 of the market are designed as a monolithic structure. They are used in areas where the water quality contains sediment. It is often the case that the plug 50 is stuck due to the sediment problem, making the temperature-controlled spool unusable. It is often necessary to put a screen 80 on the lower casing 20 to prevent the mud from clogging the spool, but the screen is difficult to block the entry of fine sediment.

2. The protective spring of the thermostatic valve core adopting paraffin temperature package 60 to adjust the water temperature in the market is designed inside the guide rod (belonging to the screw drive assembly 30), and the thermostatic valve core cannot be assisted in discharging impurities during use.

3. The thermostatic valve core on the market mixes directly into the temperature sensing area of the paraffin wax pack 60 after mixing, so that the temperature performance is unstable.

In order to overcome the above disadvantages, the inventors have specially developed an anti-plugging and anti-jamming thermostatic valve core, and the present invention is produced.

Summary of the invention

The object of the present invention is to provide an anti-plugging and anti-locking thermostatic valve core to solve the problem of sludge jamming the valve core.

In order to achieve the above object, the technical solution of the present invention is as follows:

The utility model relates to an anti-plug blocking anti-clamping thermostatic valve core, which comprises an upper casing, a lower casing, a plunger assembly, a guiding rod, a spline rod, a paraffin warm pack and a working spring; the lower shell is provided with a cold water inlet and a hot water inlet And mixing the water outlet hole; the paraffin wax package shaft is disposed in the upper casing and the lower casing, the guiding rod is disposed above the paraffin warm pack of the upper casing, the spline rod is disposed at the upper end of the upper casing, and the spline shaft is snail Connected to a guide bar that can move up and down;

The plunger assembly includes a gland, a connecting sleeve, a plunger upper cover, a plunger base and a protection spring; the gland and the connecting sleeve can be relatively moved on the paraffin warm pack, and the gland is located above the connecting sleeve The gland and the connecting sleeve are nested with each other, the top of the paraffin warming bag protrudes from the gland, the top of the connecting sleeve abuts on the gland, and the bottom of the connecting sleeve abuts on the paraffin warm pack; A water outlet hole is formed in the middle of the water hole and the plunger base, and the plunger upper cover and the plunger base are mutually movable and nested relative to each other, and the top of the plunger upper cover abuts against the pressure cover, and the bottom of the plunger base abuts with the connection sleeve, and the column A protection spring is disposed between the upper cover and the plunger base, so that the plunger upper cover, the protection spring and the plunger base are locked between the pressure cover and the connecting sleeve; the lower end of the working spring is elastically abutted against the bottom of the lower casing, The upper end of the working spring is elastically abutted against the bottom of the plunger base;

A cold water inlet is formed between the upper cover of the plunger and the upper casing, and a hot water inlet is formed between the plunger base and the lower casing to form a hot water inlet.

Further, the protection spring is sleeved on the connecting sleeve.

Further, a water inlet ring is formed in the upper cover of the plunger, and a plurality of water inlet holes are arranged on the water inlet ring; the water outlet ring is formed in the plunger base, and the water outlet ring is provided with a plurality of equally spaced distributions. Outlet hole.

Further, a sealing ring is disposed between the upper cover of the plunger and the base of the plunger.

Further, the bottom of the guiding rod is sleeved with a pressing cap, and the upper end of the pressing cap is sleeved into the pressing cap, and the inside of the pressing cap forms a limiting flange for restricting the downward movement of the pressing cover.

Further, an impeller is further included, and the impeller is installed at a mixing water outlet of the lower casing, and a plurality of equally spaced impeller holes are formed in the impeller.

After adopting the above scheme, when the invention is used, the spline rod is rotated to push the guide rod to move downward, and when the guide rod is moved downward to resist the paraffin wax pack, the paraffin wax pack is pushed down, and the guide rod is moved down to resist the gland. The push cover will be pushed down, and the gland will push the upper cover of the plunger down, and the cold water inlet cut will increase. In the process, due to the protection spring, the upper cover of the plunger needs to be subjected to a large thrust of the gland to be able to Move, so a large cold water incision is formed between the upper cover of the plunger and the upper casing, so that larger impurities pass through and do not get caught between the end surface of the upper cover of the plunger and the end surface of the upper casing; meanwhile, paraffin The thrust received by the warm pack is buffered by the protective spring to prevent the paraffin warm pack from being damaged due to excessive force;

Rotating the spline lever in the opposite direction, pushing the guide rod and the pressure cap up, and simultaneously driving the connecting sleeve and the pressing cover to move up. At this time, since the plunger upper cover and the plunger base are restricted to be locked between the pressing cover and the connecting sleeve, The plunger upper cover and the plunger base are both moved up, and the working spring compressed by the plunger base is returned to the top, the hot water inlet cut is increased, and the cold water inlet cut is small. In the process, the column is protected by the action of the spring. The plug base requires a large thrust to move up, so a large hot water incision is also formed, and the upper cover of the plunger is buffered by the protection spring, and the cold water inlet cut can be kept large enough.

The invention has the following advantages:

1. The invention locks the plunger base, the plunger upper cover and the protection spring into a whole by a gland, so that the upper cover of the plunger can be moved downward after being subjected to a certain downward thrust, and the plunger base can withstand a certain upward thrust. Moving up, forming a large cold water inlet cut and a hot water inlet cut, allowing larger impurities to pass, avoiding the plunger assembly being jammed and blocked, eliminating the filter screen and further avoiding the thermostatic valve plug blockage.

2. Compared with the existing paraffin warm-packed thermostatic valve core, the invention optimizes and improves the mixing of hot and cold water. After the cold water passes through the plurality of inlet holes and the outlet holes, the hot water region and the hot water are re-flowed to the lower end. After mixing, and then fully mixing through the impeller hole on the lower casing, the flow finally flows to the temperature sensing region of the paraffin warm pack to improve the stability of the outlet water temperature of the spool.

3. The invention limits the gland by the pressure cap, and ensures that the plunger upper cover and the plunger base are moved within the safe telescopic range of the paraffin wax package to avoid excessive crushing and damage of the paraffin wax package.

4. The adjusted internal size of the invention can be applied to the memory alloy temperature control valve core and the paraffin temperature control temperature control valve core, and has good versatility.

DRAWINGS

Figure 1 is a cross-sectional view of a conventional thermostatic valve core;

Figure 2 is an exploded view of the present invention;

Figure 3 is an overall cross-sectional view of the present invention;

Figure 4 is a cross-sectional view showing the assembly of the plunger assembly, the guide rod and the paraffin warm pack of the present invention;

Figure 5 is a perspective view showing the assembled assembly of the plunger assembly, the guide rod and the paraffin wax of the present invention;

Figure 6 is a schematic view showing the structure of the plunger upper cover of the present invention;

Figure 7 is a schematic structural view of a plunger base of the present invention;

Figure 8 is a schematic structural view of the lower casing of the present invention;

Figure 9 is a cross-sectional view of the lower casing of the present invention.

Figure 1 is a description of the number

Upper housing 10, lower housing 20, cold water inlet 201, hot water inlet 202, cold water inlet slit 203, hot water inlet slit 204, spline rod 30, guide assembly 40, plunger 50, paraffin warm pack 60, Working spring 70, filter 80;

Figure 2-9 label description

Upper casing 1, lower casing 2, mixing water outlet 21, cold water inlet 22, hot water inlet 23, plunger assembly 3, gland 31, connecting sleeve 32, plunger upper cover 33, water inlet hole 331, cold Inlet cut 332, water inlet ring 333, plunger base 34, water outlet 341, hot water inlet slit 342, water outlet ring 343, protection spring 35, guide rod 4, pressure cap 41, spline rod 5, paraffin temperature pack 6 , working spring 7, sealing ring 8, impeller 9, impeller hole 91.

detailed description

As shown in FIG. 1 to FIG. 9 , an anti-plug anti-clamping thermostatic valve core disclosed in the present invention comprises an upper casing 1, a lower casing 2, a plunger assembly 3, a guide rod 4, a spline rod 5, and a paraffin wax temperature. The bag 6 and the working spring 7; the upper casing 1 and the lower casing 2 are sleeved, the lower casing 1 is provided with a cold water inlet 22, a hot water inlet 23 and a mixing water outlet 21, and the paraffin warm pack 6 shaft is arranged on the upper casing 1 and the lower casing 2, the guide rod 4 is disposed above the paraffin warm pack 6 of the upper casing 1, the spline rod 5 is disposed at the upper end of the upper casing 1, and the spline rod 5 is screwed to the guide rod movable up and down 4;

The plunger assembly 3 includes a gland 31, a connecting sleeve 32, a plunger upper cover 33, a plunger base 34 and a protection spring 35; the gland 31 and the connecting sleeve 32 can be relatively movably placed on the paraffin warm pack 6, and pressed The cover 31 is located above the connecting sleeve 32, and the gland 31 and the connecting sleeve 32 are nested with each other. The top of the paraffin warming bag 6 protrudes from the gland 31, and the top of the connecting sleeve 32 abuts against the gland 31, and the bottom of the connecting sleeve 32 abuts on the paraffin The plunger cover 33 and the plunger base 34 are mutually movably nested with each other, and the water inlet hole 331 is opened in the middle of the plunger upper cover 33, and the water outlet hole 341 is opened in the middle of the plunger base 34. The top of the cover 33 abuts the gland 31, the bottom of the plunger base 34 abuts the connecting sleeve 32, and a protection spring 35 is disposed between the plunger upper cover 33 and the plunger base 34 to make the plunger upper cover 33, the protection spring 35 and The plunger base 3 is locked between the gland 31 and the connecting sleeve 32; the lower end of the working spring 7 is elastically abutted against the bottom of the lower casing 2, and the upper end of the working spring 7 is elastically abutted against the bottom of the plunger base 32.

A cold water inlet slit 332 is formed between the plunger upper cover 33 and the upper casing 1 corresponding to the cold water inlet port 11, and a hot water inlet slit 342 is formed between the plunger base 34 and the lower casing 2 corresponding to the hot water inlet port 21.

In order to improve the stability of the installation of the protection spring 35, the protection spring 35 is fitted over the coupling sleeve 32.

Further, a water inlet ring 333 is formed in the upper cover 33 of the plunger, and a plurality of water inlet holes 331 are formed on the water inlet ring 333; a water ring 343 is formed in the plunger base 34, and a plurality of water outlet rings 343 are formed in the water outlet ring 343. Equally spaced water outlet holes 341.

In order to improve the sealing performance of the plunger assembly 3, a seal ring 8 is provided between the plunger upper cover 33 and the plunger base 34.

As a preferred embodiment, the bottom of the guiding rod 4 is sleeved with a pressing cap 41, and the upper end of the pressing cover 31 is sleeved into the pressing cap 41. The inside of the pressing cap 41 forms a limiting flange for restricting the downward movement of the pressing cover 31. The gland 31 is restrained by the pressure cap 41 to ensure that the plunger upper cover 33 and the plunger base 34 are moved within the safe telescopic range of the paraffin warm pack 6, thereby avoiding excessive crushing and damage of the paraffin warm pack 6.

As a preferred embodiment, the thermostatic valve core of the present invention further includes an impeller 9 mounted at the mixing water outlet 21 of the lower casing 2, and a plurality of equally spaced impeller holes 91 are defined in the impeller 9. After the cold water passes through the plurality of water inlet holes 331 and the water outlet holes 341, the hot water region flowing to the lower end is premixed with the hot water, and then fully mixed with the impeller hole 91 on the lower casing 2, and finally flows to the paraffin temperature package 6. The temperature sensing area improves the stability of the valve core water temperature.

When the invention is used, the spline rod 5 is rotated to push the guide rod 4 downward, and when the guide rod 4 is moved down to the paraffin temperature pack 6, the paraffin warm pack 6 is pushed down, and the guide rod 4 is moved down to resist the gland. At 31 o'clock, the gland 31 will be pushed down, and the gland 31 will push the plunger upper cover 33 downward, and the cold water inlet slit 331 will be enlarged. During this process, the plunger upper cover 33 needs to be pressed due to the action of the protection spring 35. The larger thrust of the cover can be moved down, so that a large cold water inlet slit 331 is formed between the plunger upper cover 33 and the upper casing 1, so that larger impurities pass through and do not get stuck in the plunger upper cover 33. Between the end surface and the end surface of the upper casing 1; at the same time, the thrust received by the paraffin warm pack 6 is buffered by the protective spring to prevent the paraffin warm pack 6 from being damaged due to excessive force;

Rotating the spline lever in the opposite direction pushes the guide rod and the pressure cap up, and simultaneously drives the connecting sleeve 32 and the pressing cover 31 to move upward. At this time, the plunger upper cover 33 and the plunger base 34 and the protection spring 35 are restricted from being locked. Between the gland 31 and the connecting sleeve 32, the plunger upper cover 33 and the plunger base 34 are both moved up, and the working spring 35 compressed by the plunger base 34 is returned to the top, and the hot water inlet slit 341 is enlarged, and the cold water inlet is increased. The slit 331 becomes smaller. In this process, due to the action of the protection spring 35, the plunger base 34 requires a large thrust to move up, so that a large hot water inlet slit is also formed, and the plunger upper cover 33 is biased by the protection spring 35. The buffered, cold water cut 331 can be kept large enough.

The above is only a specific embodiment of the present invention, and is not intended to limit the scope of the present invention. Equivalent changes made in accordance with the design ideas of this case fall within the scope of protection of this case.

Claims (6)

The utility model relates to an anti-plug blocking anti-clamping thermostatic valve core, which comprises an upper casing, a lower casing, a plunger assembly, a guiding rod, a spline rod, a paraffin warm pack and a working spring; the lower shell is provided with a cold water inlet and a hot water inlet And mixing the water outlet hole; the paraffin wax package shaft is disposed in the upper casing and the lower casing, the guiding rod is disposed above the paraffin warm pack of the upper casing, the spline rod is disposed at the upper end of the upper casing, and the spline shaft is snail Connected to a guide bar that can move up and down; The utility model is characterized in that: the plunger assembly comprises a gland, a connecting sleeve, a plunger upper cover, a plunger base and a protection spring; the gland and the connecting sleeve can be sleeved on the paraffin warm pack relatively, and the gland is pressed Located above the connecting sleeve and the gland and the connecting sleeve are nested with each other, the top of the paraffin warming bag protrudes from the gland, the top of the connecting sleeve abuts on the gland, and the bottom of the connecting sleeve abuts on the paraffin warm pack; the plunger cap A water inlet hole is opened in the middle, and a water outlet hole is opened in the middle of the plunger base, and the plunger upper cover and the plunger base are mutually movable and nested relative to each other, and the top of the plunger upper cover abuts against the pressure cover, and the bottom of the plunger base and the connection sleeve Abutting, a protection spring is disposed between the upper cover of the plunger and the base of the plunger, so that the upper cover of the plunger, the protection spring and the plunger base are locked between the pressure cover and the connecting sleeve; the lower end of the working spring is elastically abutted a bottom portion of the housing, the upper end of the working spring is elastically abutted against the bottom of the plunger base; A cold water inlet is formed between the upper cover of the plunger and the upper casing, and a hot water inlet is formed between the plunger base and the lower casing to form a hot water inlet. The anti-plug anti-clamping thermostatic valve core according to claim 1, wherein the protection spring is sleeved on the connecting sleeve. The anti-plug anti-seize thermostatic valve core according to claim 1 , wherein a water inlet ring is formed in the upper cover of the plunger, and a plurality of water inlet holes are arranged on the water inlet ring at equal intervals; A water ring is formed in the plunger base, and a plurality of equally spaced water outlet holes are formed in the water outlet ring. The anti-plug anti-seize thermostatic valve core according to claim 1, wherein a sealing ring is disposed between the upper cover of the plunger and the base of the plunger. The anti-plug anti-seize thermostatic valve core according to claim 1 , wherein a bottom of the guiding rod is sleeved with a pressure cap, and an upper end of the gland is sleeved into the pressure cap, and a pressure is formed inside the pressure cap. Cover the lower limit flange. The anti-plug anti-seize thermostatic valve core according to claim 1 further comprising an impeller, wherein the impeller is mounted at a mixing water outlet of the lower casing, and a plurality of equally spaced impeller holes are defined in the impeller. .