Active time-delay pressure reducing valve

Abstract

The utility model relates to the technical field of valves, in particular to an active delay pressure reducing valve which comprises a valve body and a top cover detachably arranged at the top of the valve body, a water passing channel is formed in an inner cavity of the valve body, a valve element is arranged on the top cover in a penetrating mode, the bottom of the valve element extends into the valve body, and the valve element can seal the water passing channel. An elastic piece detachably and fixedly connected with the middle section of the valve element is detachably arranged at the bottom of the top cover, the valve element comprises a lifting rod and a sealing block arranged at the bottom end of the lifting rod, a conductive core is arranged in the lifting rod in a penetrating mode, an electric heating block penetrating through the inner wall of the sealing block is arranged in the sealing block, and the electric heating block is electrically connected with the side wall of the bottom of the conductive core. When the sealing block is frozen, current is connected to the conductive core to enable the electric heating block to heat and melt condensed water.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to an active time-delay pressure reducing valve. Background Art

[0002] Valves are pipe fittings used to open and close pipelines, control flow direction, and regulate and control the parameters of the conveyed medium (temperature, pressure, and flow). Based on their function, they can be categorized as shutoff valves, check valves, and regulating valves. Valves are control components in fluid conveying systems, performing functions such as shutoff, regulation, diversion, backflow prevention, pressure stabilization, diversion, and overflow pressure relief. A pressure reducing valve is a type of valve that reduces inlet pressure to a desired outlet pressure through regulation and automatically maintains a stable outlet pressure by relying on the energy of the medium itself. When water flows through a pressure reducing valve, its own pressure first depresses the valve core, causing the diaphragm to deform. This counteracts the pressure of the water flow, reducing the outflow pressure and achieving the desired pressure reduction. Diaphragms with different elastic coefficients can be interchanged to achieve different pressure reduction effects, effectively reducing the water pressure and maintaining the outlet pressure within a certain range.

[0003] Although the above-mentioned existing technology can solve the corresponding technical problems, it still has certain defects: when the existing pressure reducing valve is used in cold areas, after a single use, part of the water flow will remain in the valve body of the pressure reducing valve, and then after the valve core and the valve body are closed, water flow will adhere to the contact position between the valve body and the valve core. Due to the very low external temperature, freezing will quickly occur, causing the valve core and the valve body to freeze together. When water flow is input for use, extremely high water pressure is required to flush the frozen valve core and valve body. At the moment of flushing, it is easy to cause the high-pressure water flow to excessively press down the valve core, which in turn causes the diaphragm to be excessively deformed and damaged, thereby affecting the service life. Utility Model Content

[0004] The purpose of the utility model is to provide an active time-delay pressure reducing valve which is not easy to be damaged and prevents freezing, in view of the defects and shortcomings of the prior art.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an active delayed pressure reducing valve, comprising a valve body and a top cover detachably arranged on the top of the valve body, a water flow channel being formed in the inner cavity of the valve body, a valve core having a bottom extending into the valve body and capable of closing the water flow channel being penetrated by the top cover, an elastic sheet being detachably fixedly connected to the middle section of the valve core being provided at the bottom of the top cover, the valve core comprising a lifting rod and a closing block arranged at the bottom end of the lifting rod, a conductive core being penetrated by the lifting rod, an electric heating block penetrating the inner wall of the closing block being provided in the closing block, the electric heating block being electrically connected to the bottom side wall of the conductive core, and when the closing block is frozen, current is connected to the conductive core to cause the electric heating block to generate heat and melt condensed water.

[0006] A further improvement is that: the end of the valve body is provided with a connecting flange for connecting to a pipeline.

[0007] A further improvement is that a closed heat conducting block is further provided on one end of the electric heating block close to the side wall of the closed block.

[0008] A further improvement is that a plurality of sealing rings are sleeved on the outer wall of the closing block.

[0009] A further improvement is that a plurality of rolling balls are provided on the outer wall of the lifting rod.

[0010] A further improvement is that a joint is provided at the top end of the conductive core.

[0011] A further improvement is that the outer wall of the joint is provided with two clamping plates made of conductive material.

[0012] After adopting the above technical solution, the beneficial effect of the utility model is as follows: when the utility model is used in cold areas, if freezing occurs between the valve core and the valve body, an external power supply can be connected before use, and current can be introduced through the conductive core, and the current is guided by the conductive core to the electric heating block, so that it can quickly generate heat. The electric heating block is set on the closing block and passes through the side wall of the closing block, and can generate heat at the frozen part, thereby making the condensed water in the frozen part quickly melt under the action of the heat emitted by the electric heating block, and then after the water flow is introduced, there is no need to use high-pressure water flow to flush away the valve core and valve body that are condensed together, so as to prevent the excessive deformation of the diaphragm after the valve core and valve body are flushed away due to excessive water pressure, and the service life is longer. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0014] Figure 1 This is a schematic structural diagram of a front cross-section of the pressure reducing valve of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the front cross section of the valve core of the utility model. DETAILED DESCRIPTION

[0016] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0017] See Figure 1-2As shown, the technical solution adopted in this specific embodiment is: an active delayed pressure reducing valve, comprising a valve body 1 and a top cover 2 detachably arranged on the top of the valve body 1, the inner cavity of the valve body 1 is formed with a water passage 6, the top cover 2 is penetrated by a valve core 3 whose bottom extends into the valve body 1 and can close the water passage 6, the bottom of the top cover 2 is detachably provided with an elastic sheet 4 detachably fixedly connected to the middle section of the valve core 3, the valve core 3 comprises a lifting rod 31 and a closing block 32 arranged at the bottom end of the lifting rod 31, a conductive core 33 is penetrated by the lifting rod 31, an electric heating block 34 is provided in the closing block 32 which penetrates the inner wall of the closing block 32, the electric heating block 34 is electrically connected to the bottom side wall of the conductive core 33, when the closing block 32 is frozen, current is connected to the conductive core 33 to make the electric heating block 34 generate heat to melt the condensed water, when in use, the valve body 1 is connected to the pipeline, the pipeline is opened, and water can flow into the water passage in the valve body 1. When the valve body 1 is opened, the sealing block 32 of the valve core 3 is opened, and the sealing block 32 of the valve core 3 is opened. When the valve body 1 is opened, the sealing block 32 of the valve core 3 is opened, and the sealing block 32 of the valve core 3 is opened. When the valve body 1 is opened, the sealing block 32 of the valve core 3 is opened, and the sealing block 33 of the valve core 3 is opened. When the valve body 1 is opened, the sealing block 32 of the valve core 3 is opened, and the sealing block 34 of the valve core 3 is opened. When the valve body 1 is opened, the sealing block 32 of the valve core 3 is opened, and the sealing block 34 of the valve core 3 is opened, the sealing block 3 ...

[0018] The end of the valve body 1 is provided with a connecting flange 5 for connecting to a pipeline, which is conducive to making the connection to the external water pipe more convenient and quick;

[0019] A closed heat conducting block 35 is further provided on one end of the electric heating block 34 close to the side wall of the closing block 32, which helps to prevent the electric heating block 34 from directly contacting the water flow and avoiding short circuit damage.

[0020] The outer wall of the closing block 32 is provided with a plurality of sealing rings 36. In this embodiment, two sealing rings are provided, which is beneficial to improving the sealing effect of the closing block 32 on the water passage 6.

[0021] The outer wall of the lifting rod 31 is provided with a plurality of rolling balls 37, and in this embodiment, eight are provided, which is beneficial to reduce the friction resistance of lifting and lowering, and make the pressure reduction more accurate;

[0022] The top of the conductive core 33 is provided with a connector 38, which facilitates connecting to an external power source more conveniently and quickly;

[0023] The outer wall of the connector 38 is provided with two clamping plates made of conductive material, which is conducive to making it easier to fix the external power supply when it is connected.

[0024] Working principle of the utility model: When the utility model is used, the valve body 1 is connected to the pipeline, the pipeline is opened, and water can flow into the water passage 6 in the valve body 1, and the valve core 3 is pushed up, so that the closing block 32 of the valve core 3 moves upward under the action of water pressure, and causes the elastic sheet 4 to deform. The elastic force required for the deformation of the elastic sheet 4 can offset the pressure of the water flow. When used in cold areas, if the closing block 32 of the valve core 3 and the valve body 1 are frozen, an external power supply can be connected to the conductive core 33 to make the conductive core 3 3 conducts current to the electric heating block 34, causing it to quickly generate heat. The electric heating block 34 is set on the closing block 32 and passes through the side wall of the closing block 32. When generating heat, it can conduct heat to the frozen position, thereby causing the condensed water in the frozen position to melt quickly under the action of the heat emitted by the electric heating block 34. After the water flow is introduced, there is no need to use high-pressure water flow to flush the valve core 3 and the valve body 1 that are condensed together, thereby preventing excessive deformation of the elastic sheet 4 caused by the excessive water pressure after the valve core 3 and the valve body 1 are flushed apart, and the service life is extended.

[0025] This utility model protects the product's structure; the component models are not the subject of this utility model's protection and are generally known technology. Any commercially available component that can achieve the aforementioned functions of this utility model can be used as an alternative. Therefore, component models and other parameters are not described in detail in this utility model. The contribution of this utility model lies in the scientific combination of the components.

[0026] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrative purposes. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements shall fall within the scope of the present invention as claimed. The scope of protection claimed in the present invention shall be defined by the appended claims and their equivalents. Any details not described in the present invention are well known to those skilled in the art.

Claims

1. An active time-delay pressure reducing valve, comprising a valve body (1) and a top cover (2) detachably arranged on the top of the valve body (1), wherein a water passage (6) is formed in the inner cavity of the valve body (1), a valve core (3) is penetrated and provided on the top cover (2), the bottom of which extends into the valve body (1) and can close the water passage (6), an elastic sheet (4) detachably provided on the bottom of the top cover (2) and detachably fixedly connected to the middle section of the valve core (3), the valve core (3) comprising a lifting rod (31) and a closing block (32) arranged at the bottom end of the lifting rod (31), characterized in that: A conductive core (33) is provided through the lifting rod (31), and an electric heating block (34) is provided in the closing block (32) and penetrates the inner wall of the closing block (32). The electric heating block (34) is electrically connected to the bottom side wall of the conductive core (33). When the closing block (32) is frozen, current is connected to the conductive core (33) to cause the electric heating block (34) to generate heat and melt the condensed water.

2. The active time-delay pressure reducing valve according to claim 1, characterized in that: The end of the valve body (1) is provided with a connecting flange (5) for connecting to a pipeline.

3. The active time-delay pressure reducing valve according to claim 1, characterized in that: A closed heat-conducting block (35) is also provided on one end of the electric heating block (34) close to the side wall of the closing block (32).

4. The active time-delay pressure reducing valve according to claim 1, characterized in that: A plurality of sealing rings (36) are sleeved on the outer wall of the closing block (32).

5. The active time-delay pressure reducing valve according to claim 1, characterized in that: A plurality of rolling balls (37) are provided on the outer wall of the lifting rod (31).

6. The active time-delay pressure reducing valve according to claim 1, characterized in that: A connector (38) is provided at the top end of the conductive core (33).

7. The active time-delay pressure reducing valve according to claim 6, characterized in that: The outer wall of the joint (38) is provided with two clamping plates made of conductive material.

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