Novel negative pressure suction control device

Abstract

The utility model relates to the technical field of negative pressure suction control, and provides a novel negative pressure suction control device which comprises a control valve body, a liquid inlet pipe is arranged at the front end of the control valve body, and a liquid discharge pipe is arranged at the rear end of the control valve body. The negative pressure suction control device effectively intercepts and filters food residues, oral mucosa cells, bacterial masses and the like, the possibility that impurities enter the control valve body is greatly reduced, and therefore the probability that a series of problems such as negative pressure adjusting function damage and equipment performance reduction caused by impurity blockage are reduced, it is guaranteed that the negative pressure suction control device can stably and accurately operate, and the service life of the negative pressure suction control device is prolonged. The stop block is arranged at the bottom end of the filter screen, the inclined face of the stop block can guide impurities filtered by the filter screen and sliding down, the impurities are made to be away from the bottom of the filter screen to be accumulated, the situation that the impurities fall into the groove to affect next-time installation when the filter screen is taken out is avoided, and the effective service cycle of the whole device is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to negative pressure suction control technical field, especially in new type negative pressure suction control device. BACKGROUND

[0002] In oral treatment, it is crucial to accurately control the strength of negative pressure suction, and appropriate negative pressure strength can effectively remove liquid, debris and other substances in the oral cavity, while avoiding damage to the oral tissue, in endodontic treatment, if the negative pressure strength is too large, it may damage the pulp tissue or push the debris in the root canal to the root tip direction, resulting in treatment complications, and if the negative pressure strength is too small, it cannot remove the substances generated during the treatment in time, affecting the treatment effect and efficiency.

[0003] The impurities in saliva are diverse, including food residues, exfoliated oral mucosa cells, bacterial clumps, etc., and the size, shape and texture of these impurities are different, for example, food residues may have larger particles, such as unchewed grain particles, etc., which are easy to be stuck in the narrow channel or valve gap of the control valve.

[0004] When impurities are deposited or stuck in the control valve, it will interfere with the accurate adjustment of the valve to the negative pressure, for example, in the process of adjusting the suction strength through the valve, the impurities may make the valve unable to accurately control the air flow according to the set opening, resulting in deviation of the negative pressure size from the expectation. SUMMARY

[0005] The utility model discloses a kind of new type negative pressure suction control devices, and the device is worked, to solve the above problems.

[0006] To solve the above technical problems, the utility model provides the following technical scheme: a kind of new type negative pressure suction control device, including control valve body, the front end of control valve body is provided with liquid inlet pipe, the rear end of control valve body is provided with liquid outlet pipe, the top of liquid inlet pipe and liquid outlet pipe is provided with slot, filter screen is inserted in slot, the top of filter screen is fixed with top plate, and top plate is placed in the top of liquid inlet pipe and liquid outlet pipe.

[0007] Preferably, the bottom of the filter screen is fixed with a protrusion, and recesses are opened at the bottom of the inside of the liquid inlet pipe and the liquid outlet pipe. The position of the recess corresponds to the slot, the protrusion is inserted into the recess, and the two ends of the top of the recess are provided with a stop block, which is in contact with the side wall of the filter screen.

[0008] Preferably, the two ends of the top plate are fixed with a connecting block, the two sides of the connecting block are provided with a side slot, a spring is fixed in the inside of the side slot, and the end of the spring is fixed with a clamping block.

[0009] Preferably, the two ends of the top of the slot are fixed with a connecting frame, a connecting slot is opened in the inside of the connecting frame, and a clamping slot is opened on both sides of the inside of the connecting slot.

[0010] Preferably, the number of connecting frames is the same as the number of connecting blocks, and the size of the connecting groove matches the size of the connecting block, and the connecting block can be clamped into the connecting groove.

[0011] Compared with the prior art, the utility model has the beneficial effects as follows:

[0012] 1. The novel negative pressure suction control device provided by the utility model, through the filter screen arranged in the liquid inlet pipe and the liquid outlet pipe, can effectively intercept and filter various impurities in the saliva, such as food residues, oral mucosa cells and bacterial clumps, greatly reducing the possibility of impurities entering the control valve body, thereby reducing the probability of a series of problems such as damage to the negative pressure regulation function and decline in equipment performance caused by impurity blockage, and ensuring that the negative pressure suction control device can stably and accurately operate.

[0013] 2. The novel negative pressure suction control device provided by the utility model, by arranging the stop block at the bottom end of the filter screen, the inclined surface of the stop block can guide the impurities filtered by the filter screen and sliding down, so that the impurities are away from the bottom of the filter screen and accumulated, avoiding the impurities from falling into the groove when the filter screen is taken out, affecting the next installation, prolonging the effective use period of the device as a whole, and reducing the trouble of frequently cleaning the inside of the device due to impurity accumulation. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a control assembly structure schematic view of the utility model;

[0015] Figure 2 It is a filter screen and control assembly separation structure schematic view of the utility model;

[0016] Figure 3 It is a control assembly structure schematic view of the utility model; Figure 2 It is an enlarged structure schematic view of position A in the control assembly structure;

[0017] Figure 4 It is an enlarged structure schematic view of position B in the control assembly structure; Figure 2 It is an enlarged structure schematic view of position B in the control assembly structure;

[0018] Figure 5 It is a control assembly structure sectional view of the utility model; Figure 1

[0019] Figure 6 It is a control assembly structure sectional view of the utility model; Figure 2

[0020] Explanation of reference numerals in the drawings: 1, control valve body; 2, liquid inlet pipe; 3, liquid outlet pipe; 4, filter screen; 41, insertion slot; 42, top plate; 43, connecting block; 431, side groove; 432, spring; 433, clamping block; 44, connecting frame; 441, connecting groove; 442, clamping groove; 45, stop block; 46, protruding block; 47, groove.​​ DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.

[0022] In order to further understand the content of the utility model, the utility model will be described in detail in connection with the drawings.

[0023] In connection with Figures 1 to 6 The utility model discloses a novel negative pressure suction control device, including control valve body 1, the front end of control valve body 1 is provided with liquid inlet pipe 2, the rear end of control valve body 1 is provided with liquid outlet pipe 3, the top of liquid inlet pipe 2 and liquid outlet pipe 3 is opened with the slot 41, the filter screen 4 is inserted in the slot 41, the top of filter screen 4 is fixed with the top plate 42, and the top plate 42 is placed at the top of liquid inlet pipe 2 and liquid outlet pipe 3.

[0024] The bottom of filter screen 4 is fixed with the lug 46, the bottom end inside liquid inlet pipe 2 and liquid outlet pipe 3 is opened with the recess 47, the recess 47 is opposite with the position of slot 41, the lug 46 is inserted in the inside of recess 47, the both ends of the top of recess 47 are provided with the stopper 45, the stopper 45 is in contact with the side wall of filter screen 4, the both ends of top plate 42 are fixed with the connecting block 43, the both sides of connecting block 43 are opened with the side slot 431, the inside of side slot 431 is fixed with the spring 432, and the end of spring 432 is fixed with the clamping block 433.

[0025] The both ends of the top of slot 41 are fixed with the connecting frame 44, the inside of connecting frame 44 is opened with the connecting slot 441, the both sides of connecting slot 441 inside are opened with the clamping slot 442, the number of connecting frame 44 is same with the number of connecting block 43, the size of connecting slot 441 is matched with the size of connecting block 43, and connecting block 43 can be clamped into connecting slot 441.

[0026] Working principle:

[0027] The filter screen 4 is inserted into liquid inlet pipe 2 and liquid outlet pipe 3 from the slot 41, so that the lug 46 at the bottom of filter screen 4 is inserted into the recess 47, at this moment, the connecting block 43 at the both ends of the top plate 42 of filter screen 4 is clamped into the connecting slot 441, the clamping block 433 is first subjected to the pressure action of the side wall of connecting slot 441 and is retracted into the side slot 431, and the spring 432 is extruded and shrunk at the same time, when the clamping block 433 is opposite with the clamping slot 442, at this moment, the spring 432 pushes the clamping block 433 and clamps it into the clamping slot 442, so that the connection of the connecting block 43 and the connecting frame 44 can be completed, and the installation work of the filter screen 4 can be completed in this way.

[0028] The filter screen 4 is arranged in the liquid inlet pipe 2 and the liquid outlet pipe 3, when the saliva flows into the control valve body 1 from the liquid inlet pipe 2 and then flows out from the liquid outlet pipe 3, the filter screen 4 filters the impurities in the saliva, prevents too many impurities in the saliva from entering the control valve body 1, causing the impurities to deposit or be stuck in the control valve, and interfering with the accurate adjustment of the negative pressure by the filter screen 4;

[0029] The filter screen 4 is arranged in the liquid inlet pipe 2 and the liquid outlet pipe 3, when the saliva flows into the control valve body 1 from the liquid inlet pipe 2 and then flows out from the liquid outlet pipe 3, the filter screen 4 filters the impurities in the saliva, prevents too many impurities in the saliva from entering the control valve body 1, causing the impurities to deposit or be stuck in the control valve, and interfering with the accurate adjustment of the negative pressure by the filter screen 4;

[0030] It should be noted that the relational terms herein such as first and second, and the like are used solely to distinguish one from another entity or action, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0031] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A new type of negative pressure suction control device comprising a control valve body (1), characterized in that: The front end of the control valve body (1) is provided with a liquid inlet pipe (2), the rear end of the control valve body (1) is provided with a liquid outlet pipe (3), the top end of the liquid inlet pipe (2) and the liquid outlet pipe (3) is provided with a slot (41), the slot (41) is provided with a filter screen (4), the top of the filter screen (4) is fixed with a top plate (42), and the top plate (42) is arranged on the top of the liquid inlet pipe (2) and the liquid outlet pipe (3).

2. A novel negative pressure suction control device according to claim 1, characterized in that: The bottom of the filter screen (4) is fixed with a protruding block (46), the bottom end of the inside of the liquid inlet pipe (2) and the liquid outlet pipe (3) is provided with a groove (47), the groove (47) is opposite to the position of the slot (41), the protruding block (46) is inserted into the inside of the groove (47), and the two ends of the top of the groove (47) are provided with a stop block (45).

3. A novel negative pressure suction control device according to claim 2, characterized in that: The two ends of the top plate (42) are fixed with a connecting block (43), the two sides of the connecting block (43) are provided with a side groove (431), the inside of the side groove (431) is fixed with a spring (432), and the end of the spring (432) is fixed with a clamping block (433).

4. A novel negative pressure suction control device according to claim 3, characterized in that: The two ends of the top of the slot (41) are fixed with a connecting frame (44), the inside of the connecting frame (44) is provided with a connecting groove (441), and the two sides of the inside of the connecting groove (441) are provided with a clamping groove (442).

5. A novel negative pressure suction control device according to claim 4, characterized in that: The number of the connecting frame (44) is same as that of the connecting block (43), the size of the connecting groove (441) is matched with that of the connecting block (43), and the connecting block (43) can be clamped into the connecting groove (441).

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