Quick-closing check valve

Abstract

The utility model discloses a quick-closing check valve which comprises a valve body, a valve cover, a flow channel, a valve clack, a heat preservation cavity, an installation cavity, a communication inner channel, a medium inlet, a sealing assembly, a sealing block and an acting shaft. The check valve has the advantages that the heat preservation cavity is used for receiving heat preservation media fed from the outside, temperature rise of the valve body is achieved through heat transfer, the check valve can be continuously used in the cold environment, and the situation that the valve clack is frozen and cannot be controlled is avoided; a sealing block is arranged, so that the communicating inner channel can be sealed in a default state, a heat preservation medium in the heat preservation cavity is prevented from leaking, and the structure is more reasonable; and due to the arrangement of the acting shaft, the sealing block can be pushed away to open the communicating inner channel, and the heat preservation medium can be conveniently fed into the heat preservation cavity or discharged out of the heat preservation cavity.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, especially quick -acting check valve of a kind of. BACKGROUND

[0002] Check valve is also called one-way valve or non-return valve, its function is to prevent the medium in pipeline backflow. The bottom valve of water pump suction is also belong to check valve. The valve that opening and closing member is opened or closed by medium flow and force to prevent medium backflow is called check valve. Check valve belongs to automatic valve, mainly used on the pipeline of medium one-way flow, only allow medium to flow in one direction, to prevent accidents. The structure of quick-acting check valve can refer to the quick-acting check valve of heating system of CN202222216308.2 disclosure.

[0003] The existing quick-acting check valve is single function, without anti-freezing function, in cold environment, the water source in valve body freezes, causes valve body to be blocked, serious time can cause valve damage. INVENTION CONTENTS

[0004] The utility model aims at providing a kind of quick-acting check valve, to solve the problems raised in background art.

[0005] The above technical purpose of the utility model is realized by the following technical scheme:

[0006] A kind of quick-acting check valve, including valve body and the valve cover being set to the upper end of valve body, the flow channel is opened in the valve body, the valve body is provided with the valve flap for cutting off flow channel;The valve body is made of heat-conducting material, the lower half of the valve body is opened in the heat preservation chamber, the heat preservation chamber is used to receive the heat preservation medium sent from outside;The lower half of the valve body is also opened in the installation chamber, the installation chamber and heat preservation chamber have interval, and they are connected by communicating inner channel;The medium inlet is opened in the lower end of the valve body, the sealing assembly is arranged in the installation chamber, the sealing assembly includes the sealing block that is pressed in communicating inner channel and seals communicating inner channel in default state;

[0007] Still include an action shaft, the action shaft can be inserted into medium inlet and move vertically under the action force that operator actively exerts;The action shaft can contact with sealing block and push away sealing block, to open communicating inner channel.

[0008] Further settings are: the sealing assembly further comprises a sealing inner shell, the sealing inner shell is fixed in the mounting chamber, an inner cavity is formed in the sealing inner shell, a push ring is arranged in the inner cavity, the push ring can move horizontally in the inner cavity, a filling block is fixedly arranged at the left end of the push ring, the sealing block is fixedly arranged at the left end of the filling block, the left end of the sealing inner shell is open, and the sealing block can extend out of the left end of the sealing inner shell; a main spring is arranged in the inner cavity, the main spring is in contact with the filling block and provides power for the left movement of the sealing block, and the sealing block is pressed on the communication channel after left movement and seals the communication channel.

[0009] Further settings are: the width of the action shaft is consistent with the width of the medium inlet, an inclined action surface is arranged at the upper end of the action shaft, the lower end of the sealing block has an inclined stress surface, the slope of the action surface is consistent with the slope of the stress surface, and after the action surface and the stress surface are attached, the sealing block can be pushed to move rightwards along with the upward movement of the action shaft until the right end surface of the action shaft is in contact with the left end surface of the sealing block.

[0010] A vertical medium inlet hole is formed in the action shaft.

[0011] Further settings are: the right end surface of the action shaft is provided with a damping layer.

[0012] Further settings are: an installation limiting block is fixedly arranged at the upper end of the push ring, an installation stop block is fixedly arranged at the upper end of the inner wall on the left side of the inner cavity, the installation limiting block is in contact with the installation stop block to prevent the push ring from separating from the inner cavity.

[0013] The installation limiting block is in contact with the upper end inner wall of the inner cavity, and the lower end of the push ring is in contact with the lower end inner wall of the inner cavity, so that the push ring moves horizontally in the inner cavity.

[0014] Further settings are: a horizontal intermediate shaft is fixedly arranged at the right end of the filling block, and the main spring is sleeved outside the intermediate shaft.

[0015] The utility model has the advantages that:

[0016] 1. In the utility model, the heat preservation chamber is used for receiving heat preservation medium sent from the outside, heat transfer is realized, the valve body is heated, the check valve can continue to be used in a cold environment, and the situation that the valve disc is frozen and cannot be controlled is avoided; the communication channel is arranged, the medium inlet and the heat preservation chamber are communicated, the heat preservation medium can be continuously introduced into the heat preservation chamber through the communication channel; the sealing block is arranged, the medium inlet can be sealed in the default state, the heat preservation medium in the heat preservation chamber is prevented from leaking, the structure is more reasonable; and the action shaft is arranged, the sealing block can be pushed away to open the communication channel, and the heat preservation medium is conveniently sent into the heat preservation chamber or discharged from the heat preservation chamber.

[0017] 2、In the utility model, the push ring can move horizontally in the inner cavity, the filling block is arranged to facilitate the fixation of the push ring and the sealing block, and the active spring is arranged to enable the sealing block to seal the communication inner channel in the default state.

[0018] 3、In the utility model, the width of the action shaft is consistent with the width of the medium inlet, so that the action shaft can be prevented from shaking; the slope of the action surface is consistent with the slope of the stress surface, so that the action shaft can be moved upward and the sealing block can be moved rightward; the ingenious part of this structure is that the rightward movement of the sealing block can be controlled through the action shaft, and the action shaft can be prevented from falling downward through the contact between the right end surface of the action shaft and the left end surface of the sealing block; furthermore, the medium inlet hole is arranged in the action shaft, so that the heat preservation medium can be directly introduced without being arranged in other places.

[0019] 4、In the utility model, the damping layer of the right end surface of the action shaft is in contact with the sealing block to increase the friction force, so that the action shaft can be better prevented from falling downward.

[0020] 5、In the utility model, the installation limiting block is in contact with the installation stopper to prevent the push ring from separating from the inner cavity, so that the overall installation of the sealing assembly is facilitated; at the same time, the installation limiting block is in contact with the upper end inner wall of the inner cavity, and the lower end of the push ring is in contact with the lower end inner wall of the inner cavity, so that the push ring can move horizontally in the inner cavity.

[0021] 6、In the utility model, the intermediate shaft is sleeved with the active spring, so that the active spring can be limited. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structural schematic view of an embodiment;

[0023] Figure 2 It is Figure 1 an enlarged view of the middle A part.

[0024] In the drawing: 11, valve body; 12, valve cover; 13, flow channel; 14, valve flap; 21, heat preservation chamber; 22, communication inner channel; 31, installation chamber; 32, medium inlet; 40, sealing inner shell; 401, inner cavity; 41, sealing block; 411, stress surface; 42, push ring; 43, filling block; 44, active spring; 51, action shaft; 511, action surface; 512, medium inlet hole; 61, damping layer; 71, installation limiting block; 72, installation stopper; 81, intermediate shaft. DETAILED DESCRIPTION

[0025] The utility model will be further described in detail in combination with the drawings.

[0026] As shown in the drawingsFigure 1 and 2 as shown in the figure;

[0027] The embodiment discloses a quick closing check valve, which comprises a valve body 11 and a valve cover 12 arranged on the upper end of the valve body 11, a flow channel 13 is arranged in the valve body 11, and a valve clack 14 is arranged in the valve body 11 and used for cutting off the flow channel 13. The structure is a conventional structure of the quick closing check valve and belongs to the prior art, and will not be described here.

[0028] The valve body 11 is made of a heat-conducting material, for example, an aluminum alloy; a heat preservation chamber 21 is arranged in the lower half of the valve body 11, and the heat preservation chamber 21 is used for receiving heat preservation medium sent from outside; a mounting chamber 31 is also arranged in the lower half of the valve body 11, the mounting chamber 31 is spaced apart from the heat preservation chamber 21, and the two are connected through a communication inner channel 22; a medium inlet 32 is arranged at the lower end of the valve body 11, and a sealing assembly is arranged in the mounting chamber 31, the sealing assembly comprises a sealing block 41 which is pressed on the communication inner channel 22 and seals the communication inner channel 22 in a default state;

[0029] Further comprising an action shaft 51, the action shaft 51 can penetrate into the medium inlet 32 and vertically move under the action force actively applied by an operator; the action shaft 51 can contact and then push away the sealing block 41, so as to open the communication inner channel 22.

[0030] The sealing assembly further comprises a sealing inner shell 40, the sealing inner shell 40 is fixed in the mounting chamber 31, an inner cavity 401 is arranged in the sealing inner shell 40, a push ring 42 is arranged in the inner cavity 401, the push ring 42 can horizontally move in the inner cavity 401, a filling block 43 is fixedly arranged at the left end of the inner part of the push ring 42, the sealing block 41 is fixedly arranged at the left end of the filling block 43, the left end of the sealing inner shell 40 is in an open state, and the sealing block 41 can extend out of the left end of the sealing inner shell 40; a driving spring 44 is arranged in the inner cavity 401, the driving spring 44 is in contact with the filling block 43 and provides the sealing block 41 with a left moving power, and the sealing block 41 is pressed on the communication inner channel 22 and seals the communication inner channel 22 after moving left.

[0031] The width of the action shaft 51 is consistent with the width of the medium inlet 32, an oblique action surface 511 is arranged at the upper end of the action shaft 51, the left end of the sealing block 41 has an oblique stress surface 411, the slopes of the action surface 511 and the stress surface 411 are consistent, and after the action surface 511 and the stress surface 411 are attached, the action shaft 51 can push the sealing block 41 to move right with the upward movement of the action shaft 51, until the right end surface of the action shaft 51 is in contact with the left end surface of the sealing block 41.

[0032] A vertical medium inlet hole 512 is arranged in the inner part of the action shaft 51.

[0033] The right end surface of the action shaft 51 is provided with a damping layer 61.

[0034] The upper end of the push ring 42 is fixedly provided with a mounting limiting block 71, and the upper end inner wall of the left side of the inner cavity 401 is fixedly provided with a mounting stop block 72. The mounting limiting block 71 will be in contact with the mounting stop block 72 to prevent the push ring 42 from being separated from the inner cavity 401.

[0035] The mounting limiting block 71 is in contact with the upper end inner wall of the inner cavity 401, and the lower end of the push ring 42 is in contact with the lower end inner wall of the inner cavity 401, so as to ensure that the push ring 42 moves horizontally in the inner cavity 401.

[0036] The right end of the filling block 43 is fixedly provided with a horizontal intermediate shaft 81, and the driving spring 44 is sleeved outside the intermediate shaft 81.

[0037] It should be noted that in this embodiment, the heat preservation medium can be liquid or gas; the medium inlet hole 512 can be connected to an external pipe to lead out, and the external pipe can be connected to an external pump body (such as a booster pump, a multi-way pump, etc.) to realize the feeding and extraction of the heat preservation medium. This part of the operation belongs to the conventional operation and is known to those skilled in the art.

[0038] The working process of this embodiment is as follows:

[0039] In a cold environment, when the check valve needs to be heat preserved, the action shaft 51 is inserted upward into the medium inlet 32, the action surface 511 is attached to the stress surface 411, and then the sealing block 41 is pushed to move rightward along with the upward movement of the action shaft 51 until the right end surface of the action shaft 51 is in contact with the left end surface of the sealing block 41. At this time, the communication channel 22 is opened, and due to the presence of the driving spring 44, the sealing block 41 is pressed on the damping layer 61 of the right end surface of the action shaft 51 to prevent the action shaft 51 from falling downward without the need to additionally increase the structure for fixing the action shaft 51.

[0040] Then, the heat preservation medium is fed into the medium inlet hole 512 through the external pipe, and the heat preservation medium is continuously fed into the heat preservation chamber 21 through the communication channel 22. Since the valve body 11 is made of a heat-conducting material, the valve body 11 is heated through heat transfer, so that the check valve can continue to be used in a cold environment, and the situation that the valve disc 14 is frozen and cannot be controlled is avoided. After the heat preservation medium is fed in, the action shaft 51 can be pulled out downward by applying force, and the sealing block 41 will re-press the communication channel 22 and seal the communication channel 22.

[0041] When the heat preservation medium needs to be extracted, the action shaft 51 is inserted upward into the medium inlet 32 until the right end surface of the action shaft 51 is in contact with the left end surface of the sealing block 41. Then, the heat preservation medium can be extracted through the external pump body, and after the end, the action shaft 51 can be pulled out downward by applying force, which is very convenient.

[0042] The specific embodiments are only an explanation of the utility model, and are not a limitation of the utility model, and a person skilled in the art can make a modification without creative contribution according to the need after reading the specification, but as long as it is in the scope of the claims of the utility model, it is protected by the patent law.

Claims

1. A quick closing check valve, comprising a valve body (11) and a valve cover (12) arranged on the upper end of the valve body (11), a flow channel (13) is arranged in the valve body (11), and a valve clack (14) is arranged in the valve body (11) for cutting off the flow channel (13); characterized in that: The valve body (11) is made of heat-conducting material, a lower half of the valve body (11) is provided with a heat preservation chamber (21) for receiving heat preservation medium from outside, and a lower half of the valve body (11) is also provided with an installation chamber (31) which is spaced apart from the heat preservation chamber (21) and connected with the heat preservation chamber (21) through a communication channel (22), the valve body (11) is provided with a medium inlet (32) at a lower end, and the installation chamber (31) is provided with a sealing assembly, the sealing assembly comprises a sealing block (41) which is pressed on the communication channel (22) and seals the communication channel (22) in a default state. An action shaft (51) is further provided, the action shaft (51) can penetrate into the medium inlet (32) and vertically move under the action of an active force applied by an operator, the action shaft (51) can contact and push away the sealing block (41) to open the communication channel (22).

2. A quick-closing check valve according to claim 1, wherein: The sealing assembly further comprises a sealing inner shell (40), the sealing inner shell (40) is fixed in the installation chamber (31), the sealing inner shell (40) is provided with an inner cavity (401), the inner cavity (401) is provided with a push ring (42), the push ring (42) can horizontally move in the inner cavity (401), a left end of the inner cavity (401) is fixedly provided with a filling block (43), the sealing block (41) is fixedly arranged at the left end of the filling block (43), the left end of the sealing inner shell (40) is open, and the sealing block (41) can extend out of the left end of the sealing inner shell (40), the inner cavity (401) is provided with an active spring (44), the active spring (44) is in contact with the filling block (43) and provides a left moving force for the sealing block (41), and the sealing block (41) is pressed on the communication channel (22) and seals the communication channel (22) after moving left.

3. A quick-closing check valve according to claim 2, wherein: The action shaft (51) has a width consistent with that of the medium inlet (32), an oblique action surface (511) is arranged at an upper end of the action shaft (51), an oblique stress surface (411) is arranged at a lower end of the sealing block (41), the action surface (511) and the stress surface (411) have consistent slopes, and the action surface (511) and the stress surface (411) are in contact, and the action surface (511) can push the sealing block (41) to move right with the upward movement of the action shaft (51) until the right end surface of the action shaft (51) is in contact with the left end surface of the sealing block (41). A vertical medium inlet hole (512) is arranged in the action shaft (51).

4. A quick-closing check valve according to claim 2, wherein: A damping layer (61) is arranged at the right end surface of the action shaft (51).

5. A quick-closing check valve according to claim 2, wherein: An installation limiting block (71) is fixedly arranged at an upper end of the push ring (42), an installation stop block (72) is fixedly arranged at an upper end of an inner wall on the left side of the inner cavity (401), the installation limiting block (71) is in contact with the installation stop block (72) to prevent the push ring (42) from moving out of the inner cavity (401). The installation limiting block (71) is in contact with the upper end inner wall of the inner cavity (401), and the lower end of the push ring (42) is in contact with the lower end inner wall of the inner cavity (401), so as to ensure that the push ring (42) moves horizontally in the inner cavity (401).

6. A quick-closing check valve according to claim 2, wherein: The right end of the filling block (43) is fixedly provided with a horizontal intermediate shaft (81), and the driving spring (44) is sleeved outside the outer periphery of the intermediate shaft (81).

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